AGOURON PHARMACEUTICALS INC
S-4, 1998-08-13
PHARMACEUTICAL PREPARATIONS
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        As filed with the Securities and Exchange Commission on August 13, 1998
                                   Registration No. 333-


                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549
                            -----------------------
                                    FORM S-4
                             REGISTRATION STATEMENT
                                      UNDER
                           THE SECURITIES ACT OF 1933
                          Agouron Pharmaceuticals, Inc.
             (Exact name of registrant as specified in its charter)

California                         2830                               33-0061928
(State or Other     (Primary Standard Industrial Classification  (I.R.S.Employer
Jurisdiction of               Code Number)                  Indentification No.)
incorporation or
organization)

            10350 North Torrey Pines Road, La Jolla, California 92037
                                 (619) 622-8000
    (Address, including zip code, and telephone number, including area code,
                  of Registrant's principal executive offices)

                                  Peter Johnson
                      President and Chief Executive Officer
                          AGOURON PHARMACEUTICALS, INC.
            10350 North Torrey Pines Road, La Jolla, California 92037
                                 (619) 622-8000
            (Name, address, including zip code, and telephone number,
                   including area code, of agent for service)
                             -----------------------
                                   Copies to:
                               John M. Dunn, Esq.
                          PILLSBURY MADISON & SUTRO LLP
                                101 West Broadway
                                   Suite 1800
                           San Diego, California 92101
                             -----------------------

     Approximate date of commencement of proposed sale to the public: As soon as
practicable after approval by the shareholders.
     If the  securities  being  registered  on this  Form are being  offered  in
connection  with the formation of a holding company and there is compliance with
General Instruction G, check the following box. [ ]
     If this Form is filed to  register  additional  securities  for an offering
pursuant to Rule 462(b) under the  Securities  Act,  check the following box and
list the Securities Act registration  statement number of the earlier  effective
registration statement for the same offering. [ ]
     If this Form is a  post-effective  amendment  filed pursuant to Rule 462(d)
under the  Securities  Act,  check the following box and list the Securities Act
registration  statement number of the earlier effective  registration  statement
for the same offering. [ ]

                         CALCULATION OF REGISTRATION FEE

<TABLE>
<CAPTION>
<S>                           <C>                 <C>                   <C>                    <C>

Title of each                                     Proposed maximum      Proposed maximum       Amount of
class of securities           Amount to be        offering per share    maximum aggregate      registration
to be registered              registered(1)(2)    price per share       offering price(2)(3)   fee(2)(3)
                                                  share(2)(3)

Agouron Pharmaceuticals Common      --                N/A                   N/A                  --
Stock, no par value

Rights to Purchase Series B         N/A               N/A                   N/A                  --
Participating Preferred Stock,
no par value

Agouron Oncology Division           --                N/A                   N/A                  --
Common Stock, no par value

Rights to Purchase Series C         N/A               N/A                   N/A                  --
Participating Preferred Stock,
no par value
</TABLE>
<PAGE>

(1)  If the  Divisional  Stock  Proposal  described  herein is  approved  by the
     shareholders,  each share of the Registrant's existing Common Stock, no par
     value (the "Existing Common Stock") will be converted into and reclassified
     as one  share  of  Agouron  Pharmaceuticals  Common  Stock,  no  par  value
     ("Agouron  Pharmaceuticals  Stock"),  and a number of shares (the "Oncology
     Division  Ratio") of Agouron  Oncology  Division Common Stock, no par value
     ("Oncology  Division  Stock") to be determined prior to the date of mailing
     to the Registrant's shareholders of the Proxy Statement/Prospectus included
     as  part  of  this   Registration   Statement.   The   amount  of   Agouron
     Pharmaceuticals  Stock being registered is equal to the number of shares of
     Existing Common Stock  outstanding at the  effectiveness  of the Divisional
     Stock  Proposal and the number of shares of Oncology  Division  Stock being
     registered  is equal to the  Oncology  Division  Ratio  times the number of
     shares of Existing  Common Stock  outstanding at the  effectiveness  of the
     Divisional  Stock  Proposal.  In  accordance  with  Rule  457(o)  under the
     Securities Act of 1933, as amended (the  "Securities  Act"),  the number of
     shares being registered is not included in the table.
(2)  Prior to the occurrence of certain events,  the rights to purchase Series B
     Participating  Preferred  Stock,  no par value,  and the rights to purchase
     Series C Participating  Preferred  Stock, no par value  (collectively,  the
     "Rights"),  will  not be  evidenced  separately  from the  related  Agouron
     Pharmaceuticals  Stock or Oncology  Division  Stock.  Value, if any, of the
     Rights  is  reflected   in  the  market   price  of  the  related   Agouron
     Pharmaceuticals Stock or Oncology Division Stock. Accordingly,  no separate
     fee is paid.
(3)  The shares  will be  distributed  to  shareholders  without  consideration.
     Accordingly,  pursuant to Section 6(b) of the  Securities  Act, there is no
     registration fee.
                          -----------------------

     The Registrant  hereby amends this  Registration  Statement on such date or
dates as may be necessary to delay its effective date until the Registrant shall
file a further  amendment  which  specifically  states  that  this  Registration
Statement shall  thereafter  become effective in accordance with Section 8(a) of
the  Securities  Act of 1933 or until the  Registration  Statement  shall become
effective on such date as the Commission,  acting pursuant to said Section 8(a),
may determine.




<PAGE>



                [Agouron Pharmaceuticals Letterhead appears here]


                               September ___, 1998

Dear Shareholder:

You are  cordially  invited  to attend the Annual  Meeting  of  Shareholders  of
Agouron Pharmaceuticals, Inc. which will be held on Wednesday, October 28, 1998,
at 10:00 a.m., San Diego time, at the Sheraton Grande Torrey Pines,  10950 North
Torrey Pines Road, La Jolla, California 92037.

At the Annual  Meeting,  shareholders  will be asked to  consider  and approve a
proposal (the "Divisional Stock  Proposal"),  which is being recommended by your
Board of Directors (the "Board"), to increase the number of shares of authorized
Common Stock to 150,000,000 shares and to create two series of Common Stock that
are  intended to reflect  separately  the  performances  of  Agouron's  oncology
division  (the  "Oncology   Division")  and  its  other   businesses   ("Agouron
Pharmaceuticals") and to authorize the issuance of one or more additional series
of  Common  Stock  by the  Board  from  undesignated  shares  of  Common  Stock;
75,000,000 shares will be initially designated as Agouron  Pharmaceuticals Stock
and  25,000,000  will  be  initially  designated  as  Oncology  Division  Stock.
Undesignated  shares of Common  Stock may be used to issue new  series of Common
Stock or to increase or decrease shares of an existing series of Common Stock.

If the Divisional Stock Proposal is approved by the shareholders, the Board will
have the  authorization  to  create a new  series of Common  Stock  intended  to
reflect  the  performance  of the  Oncology  Division  (the  "Oncology  Division
Stock").  Each  outstanding  share  of  Agouron's  existing  Common  Stock  (the
"Existing  Common Stock") will be converted into one share of a series of Common
Stock  intended  to  reflect  the  performance  of the  Agouron  Pharmaceuticals
Division  ("the Agouron  Pharmaceuticals  Stock"),  and ______ share of Oncology
Division Stock,  intended to reflect the  performance of the Oncology  Division.
The  transactions  contemplated by the Divisional Stock Proposal are expected to
be tax free for both the Company and its shareholders.

The Divisional  Stock Proposal is designed to separate the business,  cash flows
and reported  operating  results of the Oncology  Division  from the rest of the
Company's  business,  enable better  capital  allocation  decisions,  charge the
managers of each Division with the responsibility of maximizing the returns from
their  businesses,  and  provide  the  opportunity  to  structure  more  focused
incentives  to  management  teams and  employees.  In addition,  this new equity
structure  should  increase the  Company's  flexibility  in raising  capital and
responding to  acquisitions  and other strategic  opportunities  by enabling the
Company to issue Agouron  Pharmaceuticals  Stock or Oncology  Division  Stock as
appropriate under the particular circumstances.

By providing investors with separate classes of Common Stock intended to reflect
the  respective   performances  of  Agouron  Pharmaceuticals  and  the  Oncology
Division,  we believe the Divisional  Stock Proposal  should allow investors and
analysts to gain a better understanding of each business and enable investors to
invest in either or both securities  depending upon their individual  investment
objectives.  The Board believes that the Divisional Stock Proposal should result
in greater market recognition of the value of each of these businesses, while at
the same time  enabling the Company to preserve the  operational  and  financial
benefits it currently enjoys as a single company.

The Divisional  Stock Proposal will not result in a distribution  or spin-off to
shareholders  of any assets or liabilities of Agouron  Pharmaceuticals,  Inc. or
its  subsidiaries.  Holders of Agouron  Pharmaceuticals  Stock and the  Oncology
Division Stock will be common  shareholders of the Company and, as such, will be
subject to all risks  associated with an investment in Agouron  Pharmaceuticals,
Inc. and all of its businesses, assets and liabilities. Following implementation
of the Divisional Stock Proposal,  there can be no assurance as to whether or to
what  extent  the market  values of the  Agouron  Pharmaceuticals  Stock and the
Oncology  Division  Stock  will  reflect  the  separate  performance  of Agouron
Pharmaceuticals and the Oncology Division, or that the combined market values of
the Agouron  Pharmaceuticals Stock and the Oncology Division Stock will equal or
exceed  the  market  value  of  the   Existing   Common   Stock.   In  addition,
implementation  of the Divisional  Stock  Proposal will, to an extent,  make the
capital  structure  of the Company  more  complex and may give rise to occasions
when the  interests  of the  holders  of Agouron  Pharmaceuticals  Stock and the
holders of the Oncology Division Stock may diverge or conflict.

At the Annual Meeting,  shareholders  will also be asked to consider and approve
proposals to increase  the number of shares  available  for  issuance  under the
Company's 1996 Stock Option Plan and to increase the number of shares  available
for purchase under the Company's Employee Stock Purchase Plan. Additionally, the
shareholders will be asked to elect nine directors all of whom shall serve until
the 1999 Annual Meeting of Shareholders and until the election and qualification
of their successors and to ratify the selection of independent accountants.



<PAGE>


The Board has carefully considered the Divisional Stock Proposal and each of the
other  proposals  and believes that the approval of each of the proposals by the
shareholders  is in the best  interests  of the  Company  and the  shareholders.
Accordingly,  the Board unanimously recommends that the shareholders approve the
Divisional  Stock  Proposal  and each of the  other  proposals  set forth in the
Notice of Annual Meeting of  Shareholders  which are described in more detail in
the  attached  Proxy  Statement/Prospectus.   The  Board  also  recommends  that
shareholders  vote for the nine  nominees  for  director  listed in the attached
Proxy Statement/Prospectus.

To expedite the admissions  process for the Annual  Meeting,  please indicate if
you will be attending by marking the  appropriate box on the enclosed proxy card
and returning it to our transfer agent, ChaseMellon Shareholder Services. Please
also  detach  the  enclosed  admission  card and bring it with you to the Annual
Meeting.

Regardless of whether you plan to be present at the Annual Meeting,  your shares
should be represented and voted. Therefore, please complete, sign and return the
enclosed  Proxy Card in the  envelope  provided  at your  earliest  convenience,
whether or not you plan to attend.

                                       Sincerely,

                                       /s/ Peter Johnson

                                       Peter Johnson
                                       President and Chief Executive Officer



<PAGE>



                          AGOURON PHARMACEUTICALS, INC.
                          10350 North Torrey Pines Road
                         La Jolla, California 92037-1020

                    NOTICE OF ANNUAL MEETING OF SHAREHOLDERS
                         TO BE HELD ON OCTOBER 28, 1998

     The Annual Meeting of Shareholders  ("Meeting") of Agouron Pharmaceuticals,
Inc.,  a California  corporation  (the  "Company")  will be held at the Sheraton
Grande Torrey Pines, 10950 North Torrey Pines Road, La Jolla,  California 92037,
on Wednesday, October 28, 1998, at 10:00 a.m., San Diego time, for the following
purposes:

         1.   To elect nine  directors of the  Company,  all of whom shall serve
              until the 1999  Annual  Meeting  of  Shareholders  (and  until the
              election and qualification of their successors).

         2.   To  consider  and vote upon a  proposal  (the  "Divisional  Stock
              Proposal")  to amend and  restate  the Company's  Articles  of
              Incorporation  to increase  the number of shares of  authorized
              Common  Stock to 150,000,000  shares, of which 75,000,000  shares
              would initially be designated as Agouron  Pharmaceuticals Stock
              and 25,000,000  shares would  initially be designated as Oncology
              Division Common Stock, to provide authorization  to the  Board to
              designate  and issue any  undesignated  shares in one or more
              additional series of Common  Stock and to  determine  the  number
              of  shares,  rights,  preferences,  privileges  and
              restrictions of any such series, to increase or decrease the
              number of shares of any existing series,  and to convert each
              share of the  Company's  existing  Common Stock into one share of
              Agouron  Pharmaceuticals Stock  and  ___  share  of   Oncology
              Division   Stock  all  as   described   in  the   attached   Proxy
              Statement/Prospectus.

         3.   To  consider  and vote upon a proposal  to amend to the  Company's
              1996 Stock Option Plan to increase the number of shares  available
              for issuance under such plan by 1,000,000 shares.

         4.   To consider  and vote upon a proposal  to amend the  Company's
              Employee  Stock  Purchase  Plan to  increase  the number of shares
              available for purchase under such plan by 200,000 shares.

         5.   To ratify the selection of independent accountants.

         6.   To consider  and act upon such other  business as may  properly be
              presented  to the  Meeting or any  adjournments  or  postponements
              thereof.

     Only  shareholders  of record as of the close of business on September  14,
1998  will  be  entitled  to  notice  of  and to  vote  at  the  Meeting  or any
adjournments or postponements  thereof. A list of shareholders  entitled to vote
at the Meeting will be available  for  inspection  at the offices of the Company
for 10 days before the Meeting.

     All  shareholders  are  cordially  invited to attend the Meeting in person.
Regardless of whether you plan to attend the Meeting,  please complete, sign and
date the  enclosed  Proxy and return it promptly in the  accompanying  envelope,
postage for which has been provided if mailed in the United  States.  The prompt
return of Proxies  will  ensure a quorum  and save the  Company  the  expense of
further solicitation. Any shareholder returning the enclosed Proxy may revoke it
prior to its  exercise  by voting in person at the Meeting or by filing with the
Secretary of the Company a written revocation or a duly executed Proxy bearing a
later date.

                                     By Order of the Board of Directors

 
                                     /s/ Gary E. Friedman, Secretary
 
La Jolla, California
September __, 1998



<PAGE>


                                TABLE OF CONTENTS

                                                                            Page
Proxy Statement/Prospectus......................................................

Available Information...........................................................

Information Incorporated by Reference...........................................

Safe Harbor Statement...........................................................

Questions and Answers...........................................................

Proxy Statement Summary.........................................................
         The Annual Meeting.....................................................
         The Divisional Stock Proposal..........................................
         Comparison of Existing Common Stock with Agouron  Pharmaceuticals
               Stock and Oncology Division Stock................................
         Agouron Pharmaceuticals, Inc. - Selected Consolidated Financial Data...
         Agouron Pharmaceuticals - Selected Financial Data......................
         Agouron Oncology Division - Selected Financial Data....................
         Price Range of Common Stock and Dividend Policy........................

Risk Factors....................................................................

General.........................................................................

Proposal 1 - Election of Directors..............................................

Proposal 2 - The Divisional Stock Proposal......................................
         General................................................................
         Background of and Reasons for the Divisional Stock Proposal............
         Vote Required..........................................................
         Recommendation of the Board............................................
         Management and Allocation Policies.....................................
         Description of Capital Stock...........................................
         Oncology Division Designated Shares....................................
         Increase in Authorized Common Stock....................................
         Determinations by the Board............................................
         Dividend Policy........................................................
         Nasdaq National Market Listing.........................................
         Exchange Procedures....................................................
         Stock Transfer Agent and Registrar.....................................
         Financial Advisor......................................................
         No Dissenters' Rights..................................................
         Certain Federal Income Tax Considerations..............................
         Amendment of Stock Plans...............................................
         Restatement of Rights Agreement........................................
         Anti-Takeover Considerations...........................................




<PAGE>


                           TABLE OF CONTENTS (cont'd)

Proposal 3 - Amendment of the 1996 Stock Option Plan............................

Proposal 4 - Amendment of the Employee Stock Purchase Plan......................

Proposal 5 - Ratification of Selection of Independent Accountants...............

Security Ownership of Certain Beneficial Owners and Management..................

Executive Compensation..........................................................

Certain Transactions............................................................

Submission of Shareholder Proposals.............................................

Legal Matters...................................................................

Experts.........................................................................

Other Matters...................................................................

Annex I - Index of Defined Terms................................................

Annex II - Proposed  Restated  Articles  of  Incorporation  (To  be  filed  by
          amendment)............................................................

Annex III - Agouron Pharmaceuticals, Inc.  .....................................
         Management's Discussion and Analysis...................................
         Consolidated Financial Statements......................................

Annex IV - Agouron Pharmaceuticals .............................................
         Description of Business................................................
         Management's Discussion and Analysis...................................
         Combined Financial Statements of Agouron Pharmaceuticals...............

Annex V - Agouron Oncology Division.............................................
         Description of Business................................................
         Management's Discussion and Analysis...................................
         Combined Financial Statements of Agouron Oncology Division.............

Annex VI - - Amended and Restated 1996 Stock Option Plan........................

Annex VII - Amended and Restated Employee Stock Purchase Plan...................


<PAGE>
                  SUBJECT TO COMPLETION, DATED AUGUST 13, 1998

                          AGOURON PHARMACEUTICALS, INC.

                           PROXY STATEMENT/PROSPECTUS

                         ANNUAL MEETING OF SHAREHOLDERS
                         TO BE HELD ON OCTOBER 28, 1998

     This  Proxy  Statement/Prospectus   ("Proxy  Statement")  is  furnished  in
connection  with the  solicitation  of  Proxies by and on behalf of the Board of
Directors ("Board") of Agouron  Pharmaceuticals,  Inc., a California corporation
("Agouron"  or the  "Company"),  for  use at the  Company's  Annual  Meeting  of
Shareholders  for the fiscal year ended June 30, 1998 (the "Meeting") to be held
at the Sheraton  Grande Torrey  Pines,  10950 North Torrey Pines Road, La Jolla,
California 92037, on Wednesday,  October 28, 1998 at 10:00Ea.m., San Diego time,
and at any adjournments or postponements  thereof. At the Meeting,  shareholders
will be asked (i) to elect nine  directors  of the Company to hold office  until
the 1999 Annual Meeting of Shareholders  and until their  successors are elected
and qualified,  (ii) to increase the number of shares of authorized Common Stock
to 150,000,000  shares, of which 75,000,000 shares would initially be designated
as Agouron  Pharmaceuticals Common Stock ("Agouron  Pharmaceuticals  Stock") and
25,000,000  shares would  initially be designated as Agouron  Oncology  Division
Common Stock ("Oncology Division Stock"), to provide  authorization to the Board
to designate and issue any undesignated  shares in one or more additional series
of Common  Stock and to  determine  the number of shares,  rights,  preferences,
privileges  and  restrictions  of any such  series,  to increase or decrease the
number  of shares of any  existing  series,  and to  convert  each  share of the
Company's  existing  Common Stock  ("Existing  Common  Stock") into one share of
Agouron  Pharmaceuticals  Stock and ___ share of  Oncology  Division  Stock (the
Divisional  Stock  Proposal"),  (iii) to increase the number of shares available
for issuance  under the  Company's  1996 Stock Option Plan by 1,000,000  shares,
(iv) to increase the number of shares available for purchase under the Company's
Employee Stock Purchase Plan by 200,000  shares,  (v) to ratify the selection of
the Company's independent accountants,  and (vi) to transact such other business
as may properly be presented to the Meeting or any adjournments or postponements
thereof.  This Proxy  Statement also  constitutes  the Prospectus of the Company
with  respect  to the  shares of  Agouron  Pharmaceuticals  Stock  and  Oncology
Division Stock to be issued  pursuant to the Divisional  Stock  Proposal.  It is
anticipated that this Proxy Statement and the accompanying  Proxy will be mailed
to the  Company's  shareholders  on or about  September  __,  1998.  An Index of
Defined  Terms  showing  the pages on which  certain  terms  used in this  Proxy
Statement are defined is included as Annex I.

     See "Risk Factors" beginning on page __ for certain information that should
be considered in connection with an evaluation of the Divisional Stock Proposal.

         The Existing Common Stock is traded on the Nasdaq National Market under
the symbol AGPH. There has been no prior market for the Agouron  Pharmaceuticals
Stock or the Oncology  Division  Stock.  Application has been made to The Nasdaq
Stock  Market,  Inc.  to  redesignate  the  Existing  Common  Stock  as  Agouron
Pharmaceuticals  Stock,  to be quoted on the Nasdaq  National  Market  under the
symbol AGPH, and for the quotation of the Oncology  Division Stock on the Nasdaq
National Market under the symbol ____.

         Shareholders  should  note that if the  Divisional  Stock  Proposal  is
approved,  holders  will  not have to send in  their  certificates  representing
shares of Existing  Common Stock to be exchanged for  certificates  representing
shares of Agouron  Pharmaceuticals Stock. DO NOT MAIL YOUR EXISTING COMMON STOCK
CERTIFICATES  TO EITHER THE COMPANY OR ITS  TRANSFER  AGENT IN  CONNECTION  WITH
THESE TRANSACTIONS.

     The Board has carefully  considered the Divisional  Stock Proposal and each
of the other proposals set forth in the Notice of Annual Meeting of Shareholders
and believes that the approval of these proposals by the  shareholders is in the
best  interests  of the Company  and the  shareholders.  Accordingly,  the Board
unanimously  recommends  that the  shareholders  approve  the  Divisional  Stock
Proposal and each of the other  proposals  which are described in more detail in
this Proxy Statement.

     THESE  SECURITIES  HAVE NOT BEEN APPROVED OR  DISAPPROVED BY THE SECURITIES
AND  EXCHANGE  COMMISSION  OR  ANY  STATE  SECURITIES  COMMISSION  NOR  HAS  THE
SECURITIES AND EXCHANGE  COMMISSION OR ANY STATE  SECURITIES  COMMISSION  PASSED
UPON THE ACCURACY OR ADEQUACY OF THIS PROXY STATEMENT. ANY REPRESENTATION TO THE
CONTRARY IS A CRIMINAL OFFENSE.

Dated September ____, 1998


Information   contained  herein  is  subject  to  completion  or  amendment.   A
registration  statement  relating  to these  securities  has been filed with the
Securities  and Exchange  Commission.  These  securities may not be sold nor may
offers to buy be accepted prior to the time the registration  statement  becomes
effective. This Proxy Statement/Prospectus shall not constitute an offer to sell
or the  solicitation  of any offer to buy nor  shall  there be any sale of these
securities  in any State in which  such  offer,  solicitation  or sale  would be
unlawful prior to registration or qualification under the securities laws of any
such State.



<PAGE>




                              AVAILABLE INFORMATION

         The  Company  is  subject  to  the  informational  requirements  of the
Securities  Exchange  Act of 1934,  as amended  (the  "Exchange  Act"),  and, in
accordance therewith, files reports, proxy statements and other information with
the Securities and Exchange Commission (the "Commission").  Such reports,  proxy
statements,  and other  information  filed by the Company can be  inspected  and
copied at the public  reference  facilities  maintained by the Commission at 450
Fifth Street, N.W., Room 1024,  Washington,  D.C. 20549, and at the Commission's
Regional  Offices at Seven World Trade Center,  13th Floor,  New York,  New York
10048,  and Citicorp  Center,  500 West  Madison  Street,  Suite 1400,  Chicago,
Illinois  60661.  Copies  of such  material  can be  obtained  from  the  Public
Reference  Section  of the  Commission  at 450 Fifth  Street,  N.W.,  Room 1024,
Washington,  D.C.  20549, at prescribed  rates or by accessing the  Commission's
World Wide Web site at http://www.sec.gov.

         The Company has filed a registration statement on Form S-4 (referred to
herein,  together  with  all  amendments  and  exhibits,  as  the  "Registration
Statement")  with the  Commission  under the  Securities Act of 1933, as amended
(the "Securities Act"), covering the shares of Agouron Pharmaceuticals Stock and
Oncology  Division  Stock  issuable  in  connection  with the  Divisional  Stock
Proposal.  This Proxy  Statement,  which also  constitutes the Prospectus of the
Company filed as part of the Registration Statement, does not contain all of the
information set forth in the  Registration  Statement and the exhibits  thereto,
certain parts of which are omitted in accordance  with the rules and regulations
of the  Commission.  For further  information,  reference  is hereby made to the
Registration  Statement,  which is available for  inspection  and copying as set
forth above.  Statements contained in this Proxy Statement as to the contents of
any contract or other document which is filed as an exhibit to the  Registration
Statement  are  necessarily  summaries  thereof,  and  each  such  statement  is
qualified  in its  entirety by  reference  to the full text of such  contract or
document.

                 INCORPORATION OF CERTAIN DOCUMENTS BY REFERENCE

         The  following  document  which has been filed by the Company  with the
Commission (File No 0-15609) is incorporated herein by reference:  Annual Report
on Form 10-K for the fiscal year ended June 30, 1998. All documents filed by the
Company  pursuant  to Section  13(a),  13(c),  14 or 15(d) of the  Exchange  Act
subsequent  to the date of this  Proxy  Statement  and  prior to the date of the
Meeting  shall be  deemed  to be  incorporated  by  reference  into  this  Proxy
Statement and to be a part hereof from the date any such document is filed.  Any
statement  contained in a document  incorporated or deemed to be incorporated by
reference  herein shall be deemed to be modified or  superseded  for purposes of
this Proxy Statement to the extent that a statement  contained herein (or in any
other  subsequently filed document which also is or is deemed to be incorporated
by reference  herein) modifies or supersedes such statement.  Any such statement
so  modified  or  superseded  shall  not be  deemed,  except as so  modified  or
superseded, to constitute a part of this Proxy Statement.

         This Proxy Statement  incorporates  documents by reference that are not
presented  herein or delivered  herewith.  A copy of such  documents  (excluding
exhibits  unless such exhibits are  specifically  incorporated by reference into
the  information  incorporated  herein) will be provided  without charge to each
person,  including any beneficial owner, to whom a Proxy Statement is delivered,
upon oral or written request of any such person.  Requests should be directed to
Agouron  Corporate  Communications,  10350 North  Torrey  Pines Road,  La Jolla,
California 92037;  telephone (619) 622-8000.  In order to ensure timely delivery
of the documents, any request should be made by October 21, 1998.

                PRIVATE SECURITIES LITIGATION REFORM ACT OF 1995
                        SAFE HARBOR CAUTIONARY STATEMENT

         This  Proxy  Statement  contains   forward-looking   statements.   Such
statements, including but not limited to those regarding anticipated expenses of
the   Oncology   Division,   sales  and   revenues   attributable   to   Agouron
Pharmaceuticals,  timing and  initiation  of clinical  trials,  development  and
marketing  of future  products  and the like,  are subject to certain  risks and
uncertainties  which could cause actual results to differ  materially from those
projected. See "Important Factors Regarding Forward-Looking Statements" attached
as Exhibit 99 to the  Company's  Annual  Report on Form 10-K for the fiscal year
ended June 30, 1998 and "Risk Factors." Important factors which may affect these
projections  or  expectations  include,  but are not  limited  to: the impact of
competitive  products,  regulatory  approvals,  changes in the overall  economy,
availability of future financing,  and other unanticipated  events.  Readers are
cautioned not to place undue reliance on these forward-looking statements, which
speak only as of the date  hereof.  The  Company  undertakes  no  obligation  to
publicly release the result of any revisions to these forward-looking statements
which may be made to reflect events or circumstances after the date hereof or to
reflect the occurrence of unanticipated events.



<PAGE>




                              QUESTIONS AND ANSWERS
       RELATING TO THE DIVISIONAL STOCK PROPOSAL AND RELATED TRANSACTIONS

Q:       WHY AM I RECEIVING THIS PROXY STATEMENT?

A:       In  addition  to the  standard  Annual  Meeting  business  of  electing
         directors and ratifying  accountants,  the Board is  distributing  this
         Proxy  Statement to  shareholders  of the Company in connection  with a
         proposal  that  would,  among  other  things,  create two new series of
         Common Stock intended to separately  reflect the performance of (i) the
         Company's  Oncology Division and (ii) the Company's  antiviral business
         and all of the other  businesses of the Company that are not attributed
         to the Oncology Division. The Divisional Stock Proposal also authorizes
         the Board to establish additional series of Common Stock.

         The Board of  Directors  is seeking  your proxy to vote in favor of the
         Divisional  Stock  Proposal  at  its  annual  meeting  of  shareholders
         ("Meeting").

Q.       WHEN AND WHERE WILL THE ANNUAL MEETING BE HELD?

A.       The Meeting will be held on Wednesday, October 28, 1998, at 10:00 a.m.,
         San Diego time, at the Sheraton Grande Torrey Pines, 10950 North Torrey
         Pines Road, La Jolla, California 92037.

Q.       WHAT DO I NEED TO DO NOW?

A.       Just mail in your  completed  and  signed  proxy  card in the  enclosed
         return  envelope  as  soon  as  possible  so that  your  shares  may be
         represented at the Meeting.

Q.       WHAT DOES THE BOARD OF DIRECTORS RECOMMEND?

A.       The Board of Directors has unanimously approved each proposal, believes
         that the  adoption  of each  proposal is in the best  interests  of the
         Company and its shareholders  and unanimously  recommends that you vote
         "FOR" the  election of the nine  nominees  for  director  listed in the
         Proxy Statement and "FOR" each of proposals 2 through 5.

Q.       WHAT VOTE IS REQUIRED TO APPROVE THE DIVISIONAL STOCK PROPOSAL AND THE
         OTHER PROPOSALS?

A.       The approval of the Divisional Stock Proposal  requires the affirmative
         vote of the  holders of a  majority  of the  outstanding  shares of the
         Existing  Common  Stock.  The  approval of each of the other  proposals
         requires  the  affirmative  vote of the  holders of a  majority  of the
         shares  represented  in  person  or  by  proxy,   provided  that  those
         affirmatively  voted shares also  constitute at least a majority of the
         required quorum.

Q.       WILL THE DIVISIONAL STOCK PROPOSAL RESULT IN A CHANGE IN CONTROL OF
         AGOURON?

A.       There will be no change in control of the Company if the Divisional
         Stock Proposal is approved.

Q.       WILL THE DIVISIONAL STOCK PROPOSAL RESULT IN A SPIN-OFF?

A.       No. The Divisional  Stock Proposal will not result in a distribution or
         spin-off  of  any  assets  or   liabilities   of  the  Company  or  its
         subsidiaries.  Holders of Agouron  Pharmaceuticals  Stock and  Oncology
         Division Stock will continue to be common  shareholders  of the Company
         and,  as  such,  will  be  subject  to all  risks  associated  with  an
         investment  in  the  Company  and  all of its  businesses,  assets  and
         liabilities.



<PAGE>



Q.       SHOULD I SEND IN MY STOCK CERTIFICATES?

A.       No. If the Divisional  Stock Proposal is approved,  then upon amendment
         and  restatement of the Company's  Articles of  Incorporation,  each of
         your shares of Existing  Common Stock will be  automatically  converted
         into one  share  of  Agouron  Pharmaceuticals  Stock  and ___  share of
         Oncology Division Stock.

         In connection with this conversion,  the stock certificate representing
         your shares of Existing  Common Stock will  represent  ownership of the
         same  number of shares of Agouron  Pharmaceuticals  Stock.  The Company
         will send to you your certificates for Oncology Division Stock.

Q.       WHAT IS A DIVISIONAL STOCK?

A.       Divisional  stock,  which is also  referred to as  "tracking  stock" or
         "letter stock," represents shares of common stock of a corporation,  in
         this case the Company, which are intended to "track" the performance of
         a group of assets or a division of the Company.  The Restated  Articles
         of  Incorporation of the Company would,  among other things,  authorize
         two new  series  of  divisional  stock,  to be  designated  as  Agouron
         Pharmaceuticals Stock and Oncology Division Stock.

                  - The Oncology  Division  Stock,  when issued,  is intended to
                  reflect the separate  performance of the Oncology  Division of
                  the Company,  which is engaged in research and  development of
                  pharmaceuticals for the treatment of cancer.

                  - The Agouron  Pharmaceuticals Stock, when issued, is intended
                  to  reflect  the  separate   performance   of  the   Company's
                  anti-viral business and all of the other remaining  businesses
                  of the  Company  that  are  not  attributed  to  the  Oncology
                  Division.

Q.       WHEN WILL ALL OF THIS TAKE PLACE?

A.       If the Divisional  Stock Proposal is approved,  the Company  intends to
         file its Restated Articles of Incorporation with the Secretary of State
         of California  shortly after the Meeting.  If all of these events occur
         as  planned,  this event  (the  "Effective  Date")  would take place in
         November.  However,  the Board of Directors  could choose to effect the
         Divisional  Stock  Proposal  at a  later  time,  or not to  effect  the
         Divisional Stock Proposal, depending on the circumstances at the time.

Q.       WHAT DO I NEED TO DO TO RECEIVE MY CERTIFICATES FOR THE ONCOLOGY
         DIVISION STOCK?

A.       You do not need to do anything  to receive  your  certificates  for the
         Oncology  Division  Stock.  If all of the events take place as planned,
         certificates  representing whole shares of Oncology Division Stock (and
         cash in lieu of fractional  shares) will be mailed to all  shareholders
         after the Effective Date as directed by the Board.

Q.       WHAT ARE THE TAX CONSEQUENCES TO ME?

A.       The  implementation of the Divisional Stock Proposal for federal income
         tax  purposes is intended to be tax-free to  shareholders  (except with
         respect to any cash received in lieu of  fractional  shares) based upon
         the  facts and law at the time of this  Proxy  Statement.  For  federal
         income tax purposes,  cash received for  fractional  shares will likely
         result  in  recognition  of gain or  loss.  You  should  consult  a tax
         advisor.
 .

Q.       WHAT WILL MY EXISTING COMMON STOCK REPRESENT IF EVERYTHING TAKES PLACE
         AS PROPOSED?

A.       Upon the completion of all the events as planned,  the equity  interest
         in the Company  represented by all the Existing Common Stock will equal
         the equity interest of the total of the Agouron  Pharmaceuticals  Stock
         and the Oncology  Division  Stock.  Each share of Existing Common Stock
         will be converted into one share of Agouron  Pharmaceuticals  Stock and
         ___ share of Oncology Division Stock.



<PAGE>



Q.       WILL THE  AGOURON  PHARMACEUTICALS  STOCK AND THE  ONCOLOGY  DIVISION
         STOCK BE LISTED ON THE NASDAQ  NATIONAL MARKET?

A.       The   Company   has   filed  an   application   to  list  the   Agouron
         Pharmaceuticals  Stock and the  Oncology  Division  Stock on the Nasdaq
         National Market. The Agouron Pharmaceuticals Stock will be traded under
         the symbol AGPH and the  Oncology  Division  Stock will be traded under
         the symbol _______________.

Q.       WHAT VOTING RIGHTS WILL I HAVE?

A.       After the Effective Date, each share of Agouron  Pharmaceuticals  Stock
         would be entitled to one vote and each  share of  Oncology  Division
         Stock will have ___ vote until June 30,  2000.  The number of votes per
         share of Oncology  Division  Stock has been  determined  by the Board,
         based on advice from  PaineWebber  Incorporated ("PaineWebber")  as to
         the estimated  relative market value of the Oncology Division as of the
         Effective Date.  On July 1,  2000,  and on July 1 every two (2) years
         thereafter,  the  number  of votes to which  holders  of
         Oncology  Division Stock are entitled will be adjusted to reflect the
         relative  market value of such series as compared to the market  value
         of Agouron  Pharmaceuticals  Stock.  The Agouron  Pharmaceuticals
         Stock and the Oncology  Division Stock will vote together as a single
         class except in certain limited  circumstances,  under which the
         holders of Agouron  Pharmaceuticals  Stock or Oncology  Division Stock
         will have rights to vote as a separate class.

Q.       DOES THE COMPANY INTEND TO PAY DIVIDENDS?

A.       The  Company  has never  paid cash  dividends  on shares of its  Common
         Stock. The Board currently  intends to retain future earnings,  if any,
         for the  development of the businesses of Agouron  Pharmaceuticals  and
         the Oncology  Division and does not anticipate  paying dividends on the
         Agouron  Pharmaceuticals  Stock or the Oncology  Division  Stock in the
         foreseeable future.

Q.       WHAT DO I DO IF I HAVE ADDITIONAL QUESTIONS?

A.       If  you  have  any   questions   prior  to  the   Meeting,   please
         call   Agouron   Investor   Relations  at
         --------------------------.




<PAGE>
                             PROXY STATEMENT SUMMARY

         The following is a summary of certain  information  contained elsewhere
in this Proxy Statement and the Annexes  hereto.  Reference is made to, and this
Summary is qualified in its entirety by, the more detailed information contained
or  incorporated  by reference in this Proxy  Statement and the Annexes  hereto.
Unless otherwise defined herein, capitalized terms used in this Summary have the
respective  meanings  ascribed to them  elsewhere in this Proxy  Statement.  See
Annex I, "Index of Defined Terms." Shareholders are urged to read carefully this
Proxy   Statement   and  the   Annexes   hereto  in  their   entirety.   Agouron
Pharmaceuticals and the Oncology Division (and any additional  divisions created
by the issuance of  additional  series by the Board) are  sometimes  referred to
herein collectively as the "Divisions" and individually as a "Division."

                               THE ANNUAL MEETING

DATE, TIME AND PLACE OF MEETING                      The Annual  Meeting  will
                                                     be held on October  28,
                                                     1998,  at 10:00 a.m.,
                                                     San Diego time, at the
                                                     Sheraton  Grande Torrey
                                                     Pines,  10950  North Torrey
                                                     Pines Road, La Jolla,
                                                     California 92037.

RECORD DATE                                          September 14, 1998

PROPOSALS TO BE CONSIDERED                           The following proposals
AT THE MEETING                                       will be considered and
                                                     voted upon at the Annual
                                                     Meeting:

                                                     PROPOSAL 1 -  Election  of
                                                     Directors.  To  elect  nine
                                                     directors  of the  Company,
                                                     all  of  whom  shall  serve
                                                     until   the   1999   Annual
                                                     Meeting of Shareholders and
                                                     until  the   election   and
                                                     qualification    of   their
                                                     successors.

                                                     PROPOSAL     2    -    The
                                                     Divisional  Stock Proposal.
                                                     To  consider  and vote upon
                                                     the      amendment      and
                                                     restatement      of     the
                                                     Company's    Articles    of
                                                     Incorporation  to  increase
                                                     the  number  of  shares  of
                                                     authorized  Common Stock to
                                                     150,000,000    shares,   of
                                                     which   75,000,000   shares
                                                     would      initially     be
                                                     designated    as    Agouron
                                                     Pharmaceuticals  Stock  and
                                                     25,000,000   shares   would
                                                     initially be  designated as
                                                     Oncology   Division  Common
                                                     Stock,      to      provide
                                                     authorization  to the Board
                                                     to designate  and issue any
                                                     undesignated  shares in one
                                                     or more  additional  series
                                                     of  Common   Stock  and  to
                                                     determine   the  number  of
                                                     shares,             rights,
                                                     preferences, privileges and
                                                     restrictions  of  any  such
                                                     series,   to   increase  or
                                                     decrease   the   number  of
                                                     shares   of  any   existing
                                                     series,  including  Agouron
                                                     Pharmaceuticals  Stock  and
                                                     Oncology   Division  Stock,
                                                     and to  convert  each share
                                                     of the  Company's  Existing
                                                     Common Stock into one share
                                                     of Agouron  Pharmaceuticals
                                                     Stock   and  ___  share  of
                                                     Oncology Division Stock all
                                                     as  described in this Proxy
                                                     Statement.
<PAGE>

                                                     PROPOSAL 3 -
                                                     Amendment to the  Company's
                                                     1996 Stock Option Plan.  To
                                                     consider  and vote  upon an
                                                     amendment to the  Company's
                                                     1996 Stock  Option  Plan to
                                                     increase    by    1,000,000
                                                     shares the number of shares
                                                     available    for   issuance
                                                     under such plan.

                                                     PROPOSAL 4 -  Amendment  to
                                                     the   Company's    Employee
                                                     Stock   Purchase  Plan.  To
                                                     consider  and vote  upon an
                                                     amendment  to  increase  by
                                                     200,000  shares  the number
                                                     of  shares   available  for
                                                     purchase under such plan.

                                                     PROPOSAL 5 -  Selection  of
                                                     Independent Accountants. To
                                                     ratify  the   selection  of
                                                     PricewaterhouseCoopers  LLP
                                                     as      the       Company's
                                                     independent accountants for
                                                     the fiscal year ending June
                                                     30, 1999.


<PAGE>




IF THE  DIVISIONAL  STOCK  PROPOSAL  IS NOT  APPROVED BY THE  SHAREHOLDERS,  THE
AGOURON  PHARMACEUTICALS  STOCK  AND THE  ONCOLOGY  DIVISION  STOCK  WILL NOT BE
CREATED AND THE EXISTING  COMMON STOCK WILL NOT BE  RECLASSIFIED  AND  CONVERTED
INTO AGOURON PHARMACEUTICALS STOCK AND ONCOLOGY DIVISION STOCK.

VOTE REQUIRED                                        Holders of  Existing
                                                     Common  Stock are  entitled
                                                     to one vote per share on
                                                     all  matters  brought
                                                     before the Meeting and to
                                                     cumulate votes  for the
                                                     election  of the  nine
                                                     directors.  Therefore,  in
                                                     voting for directors,  each
                                                     outstanding  share of
                                                     Existing Common  Stock  is
                                                     entitled  to  nine  votes
                                                     which  may be  cast  for
                                                     one candidate  or
                                                     distributed  in any manner
                                                     among the  nominees for
                                                     director.  However,  the
                                                     right to  cumulate  votes
                                                     in favor of one or more
                                                     candidates  may not be
                                                     exercised  until the
                                                     candidate or candidates
                                                     have  been  nominated  and
                                                     the  shareholder  has given
                                                     notice  at  the  Meeting
                                                     of  the  intention  to
                                                     cumulate  votes.  Assuming
                                                     that a  quorum  is  present
                                                     at the  Meeting,  the  nine
                                                     persons  receiving the
                                                     highest  number of votes
                                                     will be elected to  the
                                                     Board.  The required
                                                     quorum for the Meeting
                                                     shall consist of
                                                     a majority  of the
                                                     outstanding  shares of
                                                     Existing  Common  Stock
                                                     which are entitled to vote
                                                     in person or by proxy at
                                                     the Meeting

                                                     Proposal 2. The affirmative
                                                     vote  by the  holders  of a
                                                     majority of the outstanding
                                                     shares   of  the   Existing
                                                     Common Stock.

                                                     Proposals  3, 4 and 5.  The
                                                     affirmative   vote  by  the
                                                     holders  of a  majority  of
                                                     the shares of the  Existing
                                                     Common  Stock   represented
                                                     and  voting at the  Meeting
                                                     (which shares constitute at
                                                     least  a  majority  of  the
                                                     required   quorum  for  the
                                                     Meeting).


RECOMMENDATION OF THE BOARD                          The Board has  carefully
                                                     considered  each  Proposal
                                                     and believes  that the
                                                     approval  of each of these
                                                     Proposals  by the
                                                     shareholders  is in the
                                                     best interest  of  the
                                                     Company  and the
                                                     shareholders.  Accordingly,
                                                     the Board unanimously
                                                     recommends   that   the
                                                     shareholders  vote  "FOR"
                                                     each of the  Proposals  and
                                                     "FOR" the election of the
                                                     nine nominees for director
                                                     listed herein.




<PAGE>

                                   THE COMPANY

         The  principal  executive  offices of the  Company are located at 10350
North Torrey Pines Road, La Jolla,  California 92037 and its telephone number is
(619) 622-8000.

Agouron Pharmaceuticals

         Agouron  Pharmaceuticals  encompasses  all  of  the  activities  of the
Company except for those  activities  related to the research,  development  and
commercialization of oncology products being pursued by the Oncology Division.

         Agouron   Pharmaceuticals,   through   its  own  sales  and   marketing
organization,  is  currently  marketing  in the  United  States  the first  drug
developed by the Company,  VIRACEPT (nelfinavir mesylate),  for treatment of HIV
infection. In addition,  Agouron Pharmaceuticals is expected to initiate a phase
II/III pivotal clinical trial of REMUNE,  an immune-based  therapeutic agent for
treatment   of  HIV   infection   and  AIDS   being   co-developed   by  Agouron
Pharmaceuticals   and  The  Immune  Response   Corporation.   Further,   Agouron
Pharmaceuticals   has  a  number  of  programs  in  progress  for  discovery  or
development  of other new drugs in the  fields  of viral  disease,  inflammatory
disease  and  other  serious  diseases.  Agouron  Pharmaceuticals  utilizes  the
proprietary core drug discovery technology of Alanex Corporation, a wholly-owned
subsidiary of the Company,  to accelerate the steps  necessary to discover small
molecule  drug  candidates.  Such steps  include the initial  identification  of
compounds  that exhibit  activity  against  selected  biological  targets to the
progression of these compounds to drug candidates for human clinical trials.

         Agouron  Pharmaceuticals'  long-term  goal is increasing  profitability
from the sale of drugs  generated  from its own drug  discovery and  development
efforts, and from development and commercialization of drugs licensed by Agouron
Pharmaceuticals.   To  augment  its  technical  capabilities,   to  enhance  the
likelihood of successful commercialization of its products and to offset some of
its operating  costs,  Agouron  Pharmaceuticals  has entered into  collaborative
research   and   development   arrangements   with  other   companies.   Agouron
Pharmaceuticals  has generally retained  significant  commercial rights in drugs
developed in its collaborative research and development programs funded in whole
or in part by other  companies.  Agouron  Pharmaceuticals  anticipates  that its
successfully  developed  products  will be  commercialized  both through its own
direct sales and  marketing  activities  in certain  pharmaceutical  markets and
through  manufacturing  and marketing  relationships  with other  pharmaceutical
companies.

Agouron Oncology Division

         The  Oncology  Division  will  be  organized  as a  distinct  operating
division of the Company  and will  continue  its  commitment  to the  discovery,
development  and  marketing of  small-molecule  drugs  engineered  to inactivate
proteins  which play key roles in  cancer.  Approximately  25% of the  Company's
total  anticipated  research and development  expenditures  during the Company's
1999  fiscal  year are  expected  to be  incurred  by the  Oncology  Division in
connection with four clinical development programs and four preclinical research
programs.  Included are AG3340, an inhibitor of matrix  metalloprotease  ("MMP")
currently in pivotal  phase  II/III  clinical  trials for  treatment of lung and
prostate cancer, programs that pursue other inhibitors of MMPs and inhibitors or
antagonists  of  the  following:  glycinamide  ribonucleotide  formyltransferase
("GART");  cyclin dependent  kinases  ("cdk");  gonadotropin  releasing  hormone
("GnRH");  poly (ADP ribose)  polymerase  ("PARP");  and a receptor for vascular
endothelial  growth factor ("VEGF").  The Oncology Division is presently pursing
these  programs  on an  independent  basis.  See  Annex  V -  "Agouron  Oncology
Division" for a more complete description of the programs initially allocated to
the Oncology Division.




<PAGE>




                          THE DIVISIONAL STOCK PROPOSAL
General

         If the Divisional  Stock Proposal is approved by the  shareholders  and
implemented  by the Board of  Directors,  the  Company's  existing  Articles  of
Incorporation  will be amended to increase  the number of shares of Common Stock
to  150,000,000  and to  designate  two new series of Common  Stock - 75,000,000
shares of Agouron Pharmaceuticals Common Stock ("Agouron Pharmaceuticals Stock")
and  25,000,000  shares of Agouron  Oncology  Division  Common Stock  ("Oncology
Division  Stock") and convert each share of the Company's  Existing Common Stock
into one  share of  Agouron  Pharmaceuticals  Stock  and ___  share of  Oncology
Division  Stock.  The amendment would also authorize the Board to establish from
time to time one or more  additional  series with the number of shares,  rights,
preferences,   privileges   and   restrictions   as  determined  by  the  Board.
Undesignated  shares  of  Common  Stock  could  also  be used  to  increase  the
authorized   shares  of  any  existing  series  of  Common  Stock.  The  rights,
preferences,  privileges and restrictions of the Agouron  Pharmaceuticals  Stock
and the Oncology  Division Stock are described in more detail  elsewhere in this
Proxy Statement. See "Proposal 2--The Divisional Stock  Proposal--Description of
Capital Stock" and the proposed Restated  Articles of Incorporation  included as
Annex II.

         The ratio of ___ share of  Oncology  Division  Stock for each  share of
Existing  Common  Stock  was  determined  by  the  Board  in  consultation  with
PaineWebber  Incorporated  ("PaineWebber"),  the Company's  financial advisor in
connection with the Divisional  Stock  Proposal,  and is based upon the relative
market value of the Oncology  Division,  as  determined by  PaineWebber  and the
Board, and the desired initial trading range of the Oncology Division Stock. The
market value of the  Oncology  Division  was based on  financial  and  operating
information of the Oncology Division,  prevailing market conditions,  the market
prices  of  securities  and  certain  financial  and  operating  information  of
companies engaged in activities similar to those of the Oncology Division.

         The  Divisional  Stock  Proposal is designed to separate the  Company's
research  and  development  activities  in  oncology  from  the  balance  of the
Company's  business by establishing two separate  operating  divisions,  Agouron
Pharmaceuticals  and the  Oncology  Division.  The  Oncology  Division  Stock is
intended  to  reflect  the  value  and track  the  performance  of the  Oncology
Division,  whereas the Agouron  Pharmaceuticals Stock is intended to reflect the
value  and  track  the  performance  of  the  Company's   anti-viral  and  other
businesses.  See Annex IV -  "Agouron  Pharmaceuticals"  and Annex V -  "Agouron
Oncology Division" for a more complete description of each Division.

         The Company has established  policies designed to separate the business
and operations of Agouron  Pharmaceuticals and the Oncology Division, to operate
each on a stand-alone  basis, to allocate debt,  corporate  overhead,  interest,
taxes and other charges  between the two Divisions on an objective  basis and to
ensure  that terms of  inter-division  transactions  approximate  the terms that
could be obtained from unaffiliated third parties.  In addition,  these policies
set forth certain  allocations in connection with the  commercialization  of the
Oncology Division's  potential products.  See "Proposal 2 - The Divisional Stock
Proposal - Management and Allocation Policies."

Risk Factors

         When evaluating the Divisional Stock Proposal,  shareholders  should be
aware of certain risk factors relating thereto.  Such risk factors include:  (i)
the  risks  associated  with  an  investment  in  the  Company  and  all  of its
businesses,  assets and liabilities;  (ii) limited separate  shareholder  rights
with respect to the two series of Common Stock;  (iii) limited  separate  voting
rights with  respect to the two series;  (iv) the lack of legal  precedent  with
respect to the fiduciary  duties of the board of directors of a company with two
series  of  common  stock,  the  rights of which are  defined  by  reference  to
specified  businesses  of the  company;  (v) the  ability of the Board to change
certain management and allocation  policies without shareholder  approval;  (vi)
the  potential  diverging  interests of each series of Common  Stock;  (vii) the
ability  of the  Board to  transfer  funds,  services  and  assets  between  the
Divisions;  (viii) the Company's ability to issue authorized but unissued shares
of Agouron  Pharmaceuticals  Stock,  Oncology Division Stock or other classes of
stock without shareholder approval; (ix) no assurances as to the market price of
the Agouron  Pharmaceuticals  Stock or the  Oncology  Division  Stock  following
effectiveness  of the Divisional  Stock Proposal;  (x) the risk that liquidating
distributions  to a Division's  Common Stock may not  correspond to the value of
that  Division's  assets at the time of a dissolution  of the Company;  (xi) the
utilization  of tax benefits by the  Divisions;  (xii)  limitations on potential
unsolicited  acquisitions of either Division;  and (xiii) certain  anti-takeover
considerations.

         Shareholders should also be aware of certain risks with respect to each
Division's operations, which include (i) the early stage of product development,
the uncertainty of product  development and market  acceptance and technological
uncertainty;  (ii) uncertainty associated with clinical testing; (iii) a limited
history of profitability and uncertainty of

<PAGE>



continued profitability of Agouron Pharmaceuticals;  (iv) a history of operating
losses and lack of revenues of the Oncology Division;  (v) additional  financing
requirements  and access to capital;  (vi)  dependence on others;  (vii) limited
manufacturing capability; (viii) limited sales and marketing capabilities;  (ix)
patents  and  proprietary  technology;  (x)  technological  change  and  intense
competition;  (xi)  government  regulation;  (xii)  uncertainty  of  third-party
reimbursement  and  product  pricing;   (xiii)  product  liability  and  limited
insurance  coverage;  (xiv) use of  hazardous  materials;  (xv)  attraction  and
retention of personnel;  and (xvi)  volatility of stock prices.  For  additional
information with respect to the foregoing considerations, see "Risk Factors."

Reasons for the Divisional Stock Proposal

         The Divisional  Stock  Proposal was adopted by the Board  following its
review of various  alternatives to enhance shareholder value over the long term.
Creating  separate  series of Common Stock  intended to reflect  separately  the
performance of Agouron  Pharmaceuticals  and the Oncology  Division could enable
investors  to  gain  a  better   understanding  of  the  businesses  of  Agouron
Pharmaceuticals and the Oncology Division,  while preserving for the Company the
financial,  strategic and operational  benefits it currently  enjoys as a single
company.  The  separate  reporting  of each  Division's  results  would create a
framework  for  increased  and more  focused  equity  research  coverage  by the
investment   community  and  would  separate  the  Oncology  Division's  current
operating losses from the results of operations of Agouron Pharmaceuticals.  The
Divisional Stock Proposal is intended to increase the Company's ability to focus
the management of the  respective  Divisions on maximizing the returns from such
businesses and provide the opportunity to structure  incentives for employees of
each Division  that are tied  directly to the operating  results and share price
performance of that Division.  The Divisional Stock Proposal is also intended to
provide the Company greater  flexibility  with regard to raising capital and the
choice  of stock  consideration  for  acquisitions  and  investments,  including
strategic partnering transactions. In particular,  development, clinical testing
and   commercialization   of  the  Oncology  Division's  products  will  require
substantial  funds.  A separate  equity  security for the  Oncology  Division is
expected to allow the Oncology  Division to be self funding without diluting the
interests  of  holders  of  Agouron   Pharmaceuticals  Stock.  See  "Proposal  2
Divisional  Stock Proposal - Background of and Reasons for the Divisional  Stock
Proposal."

Increase in Authorized Stock

         The Divisional Stock Proposal  increases the number of shares of Common
Stock the Company is authorized to issue from  75,000,000 to  150,000,000 in the
aggregate. If the Divisional Stock Proposal is approved,  75,000,000 shares will
be initially designated Agouron Pharmaceuticals Stock, 25,000,000 shares will be
initially   designated  Oncology  Division  Stock  and  50,000,000  shares  will
initially be undesignated  shares of Common Stock. The Board would be authorized
to designate and issue shares in one or more  additional  series of Common Stock
or to increase the number of designated shares of Agouron  Pharmaceuticals Stock
or Oncology  Division  Stock.  The  authorized  but  unissued  shares of Agouron
Pharmaceuticals  Stock and the Oncology  Division  Stock would be available  for
issuance from time to time by the Company at the discretion of the Board for any
proper corporate  purpose.  The issuance of such additional  shares would not be
subject to approval by the  shareholders of the Company unless deemed  advisable
by the Board or required by applicable  law,  regulation or stock market listing
requirements.  See  "Proposal 2 - Divisional  Stock  Proposal -  Description  of
Capital Stock."

         The Board believes that an increase in the number of authorized  shares
of the Common Stock at this time is in the best interest of the Company in order
to have  available  the  number of shares  needed to  implement  aspects  of the
Divisional  Stock  Proposal  and provide for share  dividends,  stock  splits or
acquisitions  and  other  strategic   opportunities  if  such  transactions  are
determined to be in the best interest of the Company. Other than the issuance of
shares to the holders of Existing Common Stock pursuant to the Divisional  Stock
Proposal and the issuance of shares  pursuant to the  Company's  employee  stock
option and purchase plans,  as amended in connection  with the Divisional  Stock
Proposal,  the Company has no present  intention  or  agreement  with respect to
issuance of any of the shares of Agouron  Pharmaceuticals  Stock,  the  Oncology
Division Stock or any of the undesignated shares of Common Stock.  However,  the
Board may in the future  consider  the creation of  additional  series of common
stock that track the performance of other lines of the Company's business.



<PAGE>



Certain Federal Income Tax Considerations

         The  Company  has  received an opinion  from its tax  counsel,  as more
specifically  set forth in  "Proposal  2--Divisional  Stock  Proposal  --Certain
Federal  Income Tax  Considerations,"  that for United States federal income tax
purposes (i) the Agouron  Pharmaceuticals  Stock and the Oncology Division Stock
will be treated for federal  income tax  purposes as common stock of the Company
and (ii) except with respect to cash paid in lieu of fractional shares,  holders
of the Agouron  Pharmaceuticals  Stock and the Oncology  Division Stock will not
recognize income,  gain or loss in and as a result of the  reclassification  and
conversion of the Existing Common Stock.  However,  there are no court decisions
or other authorities bearing directly on transactions  similar to the Divisional
Stock Proposal. Further, the Internal Revenue Service ("IRS") has announced that
it will not issue  advance  rulings on the federal  income tax  consequences  of
transactions  similar  to  the  Divisional  Stock  Proposal.   It  is  possible,
therefore,  that the IRS could  assert that the Oncology  Division  Stock or the
Agouron Pharmaceuticals Stock or both represent property other than stock of the
Company.  Any such  determination  could have a material  adverse  effect on the
Company and result in adverse tax  consequences for shareholders of the Company.
See  "Proposal 2 --  Divisional  Stock  Proposal -- Certain  Federal  Income Tax
Considerations."  Shareholders are urged to consult their own tax advisors as to
the particular tax  consequences  of the  classification  to them under federal,
state, local or foreign law.


Dissenters' Rights

         Under the California  Corporations Code, holders of the Existing Common
Stock  have no  dissenters'  rights  in  connection  with the  Divisional  Stock
Proposal.

Fractional Shares

         Fractional shares of Oncology Division Stock will not be issued. If the
number of  shares  of  Oncology  Division  Stock to be  issued to any  holder of
Existing Common Stock includes a fraction of a whole share, the Company will pay
to such holder,  within 60 trading days after the Effective Date, the cash value
of such  fractional  share based on the average of the daily average of the high
and low sale  prices of the  Oncology  Division  Stock  reported  on the  Nasdaq
National Market during the first ten trading days following the Effective Date.




<PAGE>


           COMPARISON OF EXISTING COMMON STOCK WITH AGOURON PHARMACEUTICALS
                       STOCK AND ONCOLOGY DIVISION STOCK

         The  following  is a comparison  of the  Existing  Common Stock and the
proposed Agouron Pharmaceuticals Stock and Oncology Division Stock. This summary
is qualified in its entirety by the more detailed information  contained in this
Proxy Statement and the Annexes hereto.  See "Risk  Factors,"  "Proposal  2--The
Divisional  Stock  Proposal--  Description  of Capital  Stock;" and the Restated
Articles of Incorporation (the "Restated Articles") included in Annex II to this
Proxy Statement.
<TABLE>
<CAPTION>

                                                                         THE DIVISIONAL STOCK PROPOSAL
<S>                           <C>                           <C>                          <C>

                              Existing Common Stock         Agouron   Pharmaceuticals    Oncology Division Stock
                                      Stock
SHAREHOLDERS
OF ONE                        Holders of  Existing  Common  Holders      of     Agouron  Holders     of     Oncology
COMPANY:                      Stock  will  continue  to be  Pharmaceuticals  Stock will  Division     Stock     will
                              subject    to   the    risks  continue  to be  subject to  continue  to be  subject to
                              associated      with      an  the risks  associated  with  the risks  associated  with
                              investment  in  the  Company  an    investment   in   the  an    investment   in   the
                              and  all of its  businesses,  Company   and  all  of  its  Company   and  all  of  its
                              assets and liabilities.       businesses,    assets   and  businesses,    assets   and
                                                            liabilities.      Financial  liabilities.      Financial
                                                            effects  arising  from  the  effects     arising    from
                                                            Oncology    Division   that  Agouron     Pharmaceuticals
                                                            effect    the     Company's  that  affect the  Company's
                                                            results  of  operations  or  results  of  operations  or
                                                            financial  condition could,  financial  condition could,
                                                            if significant,  affect the  if significant,  affect the
                                                            results  of  operations  or  results  of  operations  or
                                                            financial    condition   of  financial    condition   of
                                                            Agouron  Pharmaceuticals or  the  Oncology  Division  or
                                                            the  market  price  of  the  the  market  price  of  the
                                                            Agouron     Pharmaceuticals  Oncology Division Stock.
                                                            Stock.

                                                            Any net  losses  of  either  Any net  losses  of  either
                                                            Division,  and dividends or  Division,  and dividends or
                                                            distributions     on,    or  distributions     on,    or
                                                            repurchases    of,   either  repurchases    of,   either
                                                            series of  Common  Stock or  series of  Common  Stock or
                                                            any Preferred  Stock,  will  any Preferred  Stock,  will
                                                            reduce  the  assets  of the  reduce  the  assets  of the
                                                            Company  legally  available  Company  legally  available
                                                            for   payment   of   future  for   payment   of   future
                                                            dividends   on  the   other  dividends   on  the   other
                                                            series of Common Stock.      series of Common Stock.


NUMBER       OF       SHARES           31,053,380                    31,053,380                   _________
OUTSTANDING    (Based   upon
number    of    shares    of
Existing     Common    Stock
outstanding  as of July  28,
1998.)
</TABLE>



<PAGE>




                               THE DIVISIONAL STOCK PROPOSAL
<TABLE>
<CAPTION>
<S>                           <C>                           <C>                          <C>

                              Existing Common Stock         Agouron   Pharmaceuticals    Oncology Division Stock
                                      Stock

INCLUSION IN  NASDAQ          Nasdaq    National    Market  Application  has been  made  Application  has been  made
NATIONAL MARKET:              under the symbol AGPH.        to   The    Nasdaq    Stock  to   The    Nasdaq    Stock
                                                            Market,    Inc.   for   the  Market,    Inc.   for   the
                                                            redesignation  of  Existing  listing     of     Oncology
                                                            Common   Stock  as  Agouron  Division  Stock  under  the
                                                            Pharmaceuticals      Stock,  symbol __________.
                                                            which will trade  under the
                                                            symbol AGPH.


DIVIDENDS:                    The  Company  has never paid  The   Company   intends  to  The   Company   intends  to
                              any   cash    dividends   on  retain  earnings to finance  retain  earnings to finance
                              shares of its capital stock.  future      growth     and,  future      growth     and,
                                                            therefore,     does     not  therefore,     does     not
                                                            anticipate  paying any cash  anticipate  paying any cash
                                                            dividends  on  the  Agouron  dividends  on the  Oncology
                                                            Pharmaceuticals   Stock  in  Division   Stock   in   the
                                                            the foreseeable future.      foreseeable future.

                              Dividends  on  the  Existing  Dividends  on  the  Agouron  Dividends  on the  Oncology
                              Common  Stock are limited to  Pharmaceuticals  Stock will  Division   Stock   will  be
                              assets   of   the    Company  be paid  at the  discretion  paid at the  discretion  of
                              legally  available  for  the  of    the    Board    based  the Board  based  primarily
                              payment of  dividends  under  primarily      upon     the  upon     the      financial
                              the California  Corporations  financial        condition,  condition,    results    of
                              Code and are  payable at the  results of  operations  and  operations   and   business
                              discretion   of  the   Board  business   requirements  of  requirements     of     the
                              based   primarily  upon  the  Agouron     Pharmaceuticals  Oncology  Division  and the
                              financial         condition,  and   the   Company   as  a  Company    as   a    whole.
                              results  of  operations  and  whole.  Dividends  will  be  Dividends  will be  payable
                              business   requirements   of  payable  out of the  lesser  out  of the  lesser  of (i)
                              the Company.                  of (i)  the  assets  of the  the  assets of the  Company
                                                            Company  legally  available  legally  available  for the
                                                            for    the    payment    of  payment  of  dividends  and
                                                            dividends   and   (ii)  the  (ii) the Oncology  Division
                                                            Agouron     Pharmaceuticals  Available          Dividend
                                                            Available          Dividend  Amount.  See  "Proposal 2 -
                                                            Amount.  See  "Proposal 2 -  The    Divisional     Stock
                                                            The    Divisional     Stock  Proposal -  Description  of
                                                            Proposal -  Description  of  Capital  Stock  -  Dividend
                                                            Capital  Stock  -  Dividend  Rights."
                                                            Rights."

</TABLE>

<PAGE>




                              THE DIVISIONAL STOCK PROPOSAL
<TABLE>
<CAPTION>
<S>                           <C>                           <C>                          <C>

                              Existing Common Stock         Agouron   Pharmaceuticals    Oncology Division Stock
                                      Stock

                                                            The  Board,  subject to the  The  Board,  subject to the
                                                            limitations    set    forth  limitations    set    forth
                                                            above,  may,  in  its  sole  above,  may,  in  its  sole
                                                            discretion,   declare   and  discretion,   declare   and
                                                            pay  dividends  exclusively  pay  dividends  exclusively
                                                            on       the        Agouron  on  the  Oncology  Division
                                                            Pharmaceuticals      Stock,  Stock,  exclusively  on the
                                                            exclusively      on     the  Agouron     Pharmaceuticals
                                                            Oncology   Division  Stock,  Stock,     or    on     any
                                                            or   on   any   combination  combination   thereof,   in
                                                            thereof,    in   equal   or  equal or  unequal  amounts,
                                                            unequal            amounts,  notwithstanding  the amount
                                                            notwithstanding  the amount  of   dividends   previously
                                                            of   dividends   previously  declared on either  series,
                                                            declared on either  series,  the  respective  voting  or
                                                            the  respective  voting  or  liquidation    rights    of
                                                            liquidation    rights    of  either  series or any other
                                                            either  series or any other  factor.
                                                            factor.

VOTING RIGHTS:                One vote per share.           One vote per share.          Each   share  of   Oncology
                                                                                         Division  Stock  will  have
                                                                                         ____  vote  until  June 30,
                                                                                         2000,  and on July 1,  2000
                                                                                         and on  each  July 1  every
                                                                                         two years  thereafter,  the
                                                                                         number  of  votes  to which
                                                                                         each   share  of   Oncology
                                                                                         Division  Stock is entitled
                                                                                         will   be    adjusted    to
                                                                                         reflect  the  ratio  of the
                                                                                         weighted   average   market
                                                                                         capitalization    of    the
                                                                                         Oncology   Division   Stock
                                                                                         and       the       Agouron
                                                                                         Pharmaceuticals   Stock  on
                                                                                         such   date.   The   market
                                                                                         capitalization    of   each
                                                                                         series  of  stock  shall be
                                                                                         determined  by  multiplying
                                                                                         the  number of  outstanding
                                                                                         shares  of each  series  by
                                                                                         the  Fair  Market  Value of
                                                                                         such  shares.  Fair  Market
                                                                                         Value  means the average of
                                                                                         the daily  average  of high
                                                                                         and  low  per  share  sales
                                                                                         prices as  reported  by the
                                                                                         Nasdaq  National Market (or
                                                                                         the  appropriate   exchange
                                                                                         or  stock  market  on which
                                                                                         such   shares  are  traded)
                                                                                         for   the  20   consecutive
                                                                                         trading days  commencing on
                                                                                         the 30th  trading day prior
                                                                                         to   such   date.   In  the
                                                                                         event such  selling  prices
                                                                                         are    unavailable,    Fair
                                                                                         Market    Value   will   be
                                                                                         determined by the Board.


</TABLE>

<PAGE>




                              THE DIVISIONAL STOCK PROPOSAL
<TABLE>
<CAPTION>
<S>                           <C>                           <C>                        <C>    <C>    <C>    <C>

                              Existing Common Stock         Agouron   Pharmaceuticals    Oncology Division Stock
                                      Stock

                                                            Except     as     otherwise  Except     as     otherwise
                                                            described   herein   or  as  described   herein,  or  as
                                                            provided      under     the  provided      under     the
                                                            California     Corporations  California     Corporations
                                                            Code,    the   holders   of  Code,    the   holders   of
                                                            Agouron     Pharmaceuticals  Oncology   Division   Stock
                                                            Stock  and the  holders  of  and the  holders of Agouron
                                                            Oncology   Division   Stock  Pharmaceuticals  Stock will
                                                            will  vote  together  as  a  vote  together  as a single
                                                            single voting class.         voting class.

CONVERSION AT OPTION OF       None.                         None.                        The  Company  may,  at  any
COMPANY:                                                                                 time,  convert  each  share
                                                                                         of Oncology  Division Stock
                                                                                         into  cash or a  number  of
                                                                                         shares of Agouron Pharmaceuticals
                                                                                         Stock at its Fair Market Value
                                                                                         equal  to 125% of the  Fair
                                                                                         Market  Value of one  share
                                                                                         of    Oncology     Division
                                                                                         Stock.
 
                                                                                          The  ratio  of  the  of the
                                                                                          Fair  Market  Value  of one
                                                                                          share of Oncology  Division
                                                                                          ratio  of the  Fair  Market
                                                                                          Value   of  one   share  of
                                                                                          Oncology  Division Stock to
                                                                                          one   share   of    Agouron
                                                                                          Pharmaceuticals Stock could
                                                                                          be    affected    by   many
                                                                                          factors,    including   the
                                                                                          results of  operations  and
                                                                                          financial  condition of the
                                                                                          Company and each  Division,
                                                                                          trading    volume,    share
                                                                                          issuances  and  repurchases
                                                                                          and  general  economic  and
                                                                                          market conditions.
</TABLE>

<PAGE>

<TABLE>
<CAPTION>
<S>                           <C>                           <C>                          <C>

RIGHTS ON DISPOSITION OF      None.                         None.                        If the Company  disposes of
ASSETS OF A DIVISION:                                                                    all  or  substantially  all
                                                                                          of the   properties   and
                                                                                          assets   allocated  to  the
                                                                                          Oncology   Division  (i.e.,
                                                                                          80% or more on a fair value
                                                                                          basis),   the   Company  is
                                                                                          required to  exchange  each
                                                                                          outstanding  share  of  the
                                                                                          Oncology Division Stock for
                                                                                          any   combination  of  cash
                                                                                          and/or Agouron
                                                                                          Pharmaceuticals   Stock  at
                                                                                          its Fair Market Value equal
                                                                                          to 125% of the Fair  Market
                                                                                          Value   of  one   share  of
                                                                                          Oncology Division Stock.

</TABLE>






                               THE DIVISIONAL STOCK PROPOSAL
<TABLE>
<CAPTION>
<S>                           <C>                           <C>                          <C>

                              Existing Common Stock         Agouron   Pharmaceuticals    Oncology Division Stock
                                      Stock


 
                                                                                          The proceeds  from      any
                                                                                          disposition  of  properties
                                                                                          and  assets   that  do  not
                                                                                          comprise       all       or
                                                                                          substantially  all  of  the
                                                                                          properties    and    assets
                                                                                          allocated  to the  Oncology
                                                                                          Division  will be assets of
                                                                                          the  Oncology  Division and
                                                                                          will   be   used   for  its
                                                                                          benefit,   subject  to  the
                                                                                          policies   described  under
                                                                                          "Proposal 2 The  Divisional
                                                                                          Stock  Proposal  Management
                                                                                          and Allocation Policies."

LIQUIDATION:                  Holders of  Existing  Common  Holders      of     Agouron  Holders     of     Oncology
                              Stock   are    entitled   to  Pharmaceuticals  Stock will  Division   Stock   will  be
                              receive  the net  assets  of  be  entitled  to a  portion  entitled  to a  portion  of
                              the    Company,    if   any,  of  the  assets   remaining  the  assets  remaining  for
                              remaining  for  distribution  for     distribution     to  distribution  to holders of
                              to   holders   of   Existing  holders of Common  Stock in  Common in proportion to the 
                              Common Stock.                 proportion to the aggregate  aggregate Liquidation Units
                                                            Liquidation Units of         of Oncology Division Stock.
                                                            Agouron Pharmaceuticals      Each share of Oncology
                                                            Stock.  Each share of        Division Stock will have
                                                            Agouron Pharmaceuticals      ________ Liquidation Units.
                                                            Stock will have 100          The number of Liquidation
                                                            Liquidation Units.           Units to which the Oncology
                                                                                         Division Stock is entitled
                                                                                         is subject to adjustment if
                                                                                         shares of either series are
                                                                                         subdivided, combined or
                                                                                         distributed as a dividend
                                                                                         to the shareholders of such
                                                                                         series.
                                                                                         
                                                                                       
                                                                                        
                                                                                         


</TABLE>

<PAGE>



                          AGOURON PHARMACEUTICALS, INC.
                      SELECTED CONSOLIDATED FINANCIAL DATA

     The following table summarizes certain selected consolidated financial data
of the Company for each of the five years in the period ended June 30, 1998. The
information  presented  should  be read in  conjunction  with  the  consolidated
financial statements included in Annex III to this Proxy Statement.
<TABLE>
<CAPTION>

(In thousands, except
per share amounts)                                      1998         1997         1996         1995         1994
- ----------------------------------------------------------------------------------------------------------------
<S>                                               <C>          <C>          <C>          <C>           <C>

Statement of Income (Loss) Data:
Years ended June 30,
     Total revenues                               $  466,505   $  132,063   $   55,955   $   26,722    $  16,301
     Product sales                                   409,298       56,969            0            0            0
     Research and development expenses(1)            150,657      108,137       71,010       36,317       23,957
     Net income (loss) (1)  and (2)                   13,154      (42,806)     (19,523)     (12,939)      (9,462)
      Net income (loss) per share                 $      .40   $    (1.59)  $     (.99)  $     (.89)   $    (.66)
     Shares used in computing net income
          (loss) per share                            33,214       26,946       19,688       14,592       14,482

Balance Sheet Data:
At June 30,
     Working capital                              $  127,728   $  115,786   $   70,381   $    8,837    $  21,039
     Total assets                                    363,337      266,914      102,577       27,097       37,178
     Long-term liabilities                             6,915        7,217        1,734        1,884        2,285
     Stockholders' equity(3)                         236,169      191,282       75,583       12,591       24,852
</TABLE>

     (1) In 1998, includes in-licensing expenses of $26,000,000 ($15,600,000 net
         of tax) for  commercial  rights  to three  development  stage  anti-HIV
         products.

     (2) In 1997, includes the write-off of $57,500,000 of in-process technology
         associated with the acquisition of Alanex Corporation, partially offset
         by the  realization of  $43,800,000  of deferred tax assets  associated
         with the Company's expectation of future taxable income.

     (3) The Company has never  declared  or paid cash  dividends  on its common
         stock.





<PAGE>




                 AGOURON PHARMACEUTICALS SELECTED FINANCIAL DATA

     The following table summarizes  certain selected  financial data of Agouron
Pharmaceuticals  for each of the five years in the period  ended June 30,  1998.
The  information  presented  should be read in  conjunction  with the  financial
statements and notes thereto and related Management's Discussion and Analysis of
Financial  Condition  and Results of Operations  of Agouron  Pharmaceuticals,  a
division of Agouron  Pharmaceuticals,  Inc.,  included in Annex IV to this Proxy
Statement. <TABLE> <CAPTION>

(In thousands, except
per share amounts)                                      1998         1997         1996         1995         1994
- ----------------------------------------------------------------------------------------------------------------
<S>                                               <C>          <C>          <C>          <C>           <C>

Statement of Income (Loss) Data:
Years ended June 30,
     Total revenues                               $  451,077   $  116,793   $   37,942   $   23,679    $  12,100
     Product sales                                   409,298       56,969            0            0            0
     Research and development expenses(1)            113,132       81,293       53,763       24,394       10,681
     Net income (loss) (1)  and (2)                   29,364      (34,234)     (18,349)      (2,664)       1,241
     Tax benefit allocated from Oncology
       Division                                        8,023        4,290            0            0            0
     Net income (loss) attributable to
       Agouron Pharmaceuticals stock                  37,387      (29,944)     (18,349)      (2,664)       1,241
      Net income (loss) per share(3)              $      1.1    $   (1.11)  $     (.93)  $     (.18)   $     .08
     Equivalent shares used in computing
          net income (loss) per share(3)              33,214       26,946       19,688       14,592       14,721

Balance Sheet Data:
At June 30,
     Working capital                              $  125,933   $  114,368   $   71,607   $   10,640    $  21,543
     Total assets                                    360,654      262,246      102,577       27,097       37,178
     Long-term liabilities                             6,915        7,217        1,734        1,884        2,285
     Division equity(4)                              234,374      189,864       76,809       14,394       25,356
</TABLE>

     (1) In 1998, includes in-licensing expenses of $26,000,000 ($15,600,000 net
         of tax) for  commercial  rights  to three  development  stage  anti-HIV
         products.

     (2) In 1997, includes the write-off of $57,500,000 of in-process technology
         associated with the acquisition of Alanex Corporation, partially offset
         by the  realization of  $43,800,000  of deferred tax assets  associated
         with Agouron Pharmaceuticals' expectation of future taxable income.

     (3) Historical Agouron Pharmaceuticals per share information as of June 30,
         1998 and  earnings  (loss) per share data for the five years ended June
         30,  1998 have been  presented  in the same  capital  structure  as the
         Company  although  Agouron  Pharmaceuticals  Stock  was not part of the
         capital structure of the Company for any of these periods.

     (4) Agouron  Pharmaceuticals  has never  declared or paid cash dividends on
         its equivalent common stock.






<PAGE>



                    ONCOLOGY DIVISION SELECTED FINANCIAL DATA

     The following  table  summarizes  certain  selected  financial  data of the
Oncology  Division for each of the five years in the period ended June 30, 1998.
The  information  presented  should be read in  conjunction  with the  financial
statements and notes thereto and related Management's Discussion and Analysis of
Financial  Condition and Results of Operations of Oncology Division,  a division
of Agouron Pharmaceuticals, Inc. included in Annex V to this Proxy Statement.
<TABLE>
<CAPTION>

(In thousands, except
per share amounts)                                      1998         1997         1996         1995         1994
- ----------------------------------------------------------------------------------------------------------------
Statement of Income (Loss) Data:
Years ended June 30,
<S>                                               <C>          <C>          <C>         <C>           <C>

Revenues:
     Contract and license                         $   15,428   $   15,270   $   18,013   $    3,043    $   4,201

Operating expenses:
     Research and development                         37,525       26,844       17,247       11,923       13,276
     General and administrative                        2,136        1,288        1,940        1,394        1,628

Net income (loss)                                 $  (24,233)  $  (12,862)  $   (1,174)  $  (10,274)   $ (10,703)
Net income (loss) per share(1)                    $    (3.17)  $    (1.91)  $     (.24)  $    (2.82)   $   (2.91)
Equivalent shares used in computing
      net income (loss) per share(1)                   7,643        6,737        4,922        3,648        3,680
Balance Sheet Data:
At June 30,
     Working capital                              $    1,795   $    1,418   $   (1,226)  $   (1,803)   $    (504)
     Total assets                                      2,683        4,668            0            0            0
     Division equity(2)                                1,795        1,418       (1,226)      (1,803)        (504)

</TABLE>

     (1) Historical  Oncology Division per share information as of June 30, 1998
         and  earnings  (loss) per share data for the five years  ended June 30,
         1998  have been  presented  at  one-quarter  of the  Company's  capital
         structure  although Oncology Division Stock was not part of the capital
         structure of the Company for any of these periods.

     (2) Oncology  Division  has never  declared or paid cash  dividends  on its
         equivalent common stock.




<PAGE>





                 PRICE RANGE OF COMMON STOCK AND DIVIDEND POLICY

         The Existing  Common Stock trades on the Nasdaq  National  Market under
the symbol AGPH.  The  following  table sets forth the high and low sales prices
for the Existing  Common Stock,  as reported by Nasdaq,  for the fiscal  periods
indicated.  All  prices  have been  adjusted  to reflect a 2-for-1  stock  split
effected in the form of a 100% stock dividend in August 1997.


                                                 High              Low
Fiscal 1997

         Quarter ended September 30          $  23.125        $  14.500
         Quarter ended December 31              35.750           21.125
         Quarter ended March 31                 50.500           33.500
         Quarter ended June 30                  45.500           29.187

Fiscal 1998

         Quarter ended September 30          $  56.500        $  39.250
         Quarter ended December 31              56.500           26.750
         Quarter ended March 31                 40.000           29.250
         Quarter ended June 30                  40.250           28.750

Fiscal 1999

         Quarter ending September 30
         (through  September ____)

        On July 20, 1998, the trading day prior to the Company's announcement of
its proposal to create a separate  operating  division,  the last  reported sale
price for  Existing  Common Stock on the Nasdaq  National  Market was $29.50 per
share.  On August 12, 1998, the trading day prior to the Company's  announcement
of the  Divisional  Stock  Proposal,  the last  reported sale price for Existing
Common  Stock on the Nasdaq  National  Market was $23.50 per share.  On _______,
1998,  the last reported sale price for the Existing  Common Stock on the Nasdaq
National  Market  was  $___  per  share.  As  of  July  28,  1998,   there  were
approximately 30,000 shareholders of the Existing Common Stock.

        The Company has never  declared or paid  dividends on its capital  stock
and does not  anticipate  paying any dividends in the  foreseeable  future.  The
Company currently intends to retain its earnings, if any, for the development of
its businesses.




<PAGE>

                                  RISK FACTORS

     You  should  consider  the  following  factors,  in  addition  to the other
information  contained  elsewhere in this Proxy  Statement  and the Exhibits and
Annexes  hereto,   in  connection  with  the  Divisional  Stock  Proposal.   For
definitions of certain defined terms, see "Annex I - Index of Defined Terms."

Risks Related to the Divisional Stock Proposal

         Shareholders  of One Company;  Financial  Effects of One Division Could
Adversely Affect the Other Divisions.  Notwithstanding the attribution of assets
and liabilities  (including  contingent  liabilities) and  shareholders'  equity
among the  Divisions  for the purpose of preparing  their  respective  financial
statements,  the change in the capital structure of the Company  contemplated by
the  Divisional  Stock  Proposal  will not affect  legal title to such assets or
responsibility  for such liabilities of the Company or any of its  subsidiaries.
Financial  effects arising from a Division that affect the consolidated  results
of operations  or financial  position of the Company could affect the results of
operations or financial  position of the other  Division(s) and the market price
of the series of Common Stock related to the other  Division(s).  Moreover,  any
net  losses  of  Agouron  Pharmaceuticals  or  the  Oncology  Division  and  any
distributions on, or repurchases of, any shares of capital stock will reduce the
funds of the  Company  legally  available  for the payment of  dividends  on all
classes  and  series  of  common  stock  of the  Company.  Accordingly,  Agouron
Pharmaceuticals  and the Oncology Division financial  information should be read
in conjunction with the Company's consolidated financial information.

         The Company will continue to prepare consolidated  financial statements
and also provide such consolidated  financial  statements to the shareholders of
each of Agouron  Pharmaceuticals  and the Oncology  Division.  If the Divisional
Stock Proposal is approved,  the Company will provide to shareholders of each of
Agouron Pharmaceuticals and the Oncology Division separate financial statements,
management's  discussion  and  analysis of  financial  condition  and results of
operations,  descriptions  of businesses and other relevant  information for the
respective  Division,   together  with  the  Company's   consolidated  financial
statements.  Upon  request,  the Company  will provide to any  shareholder  of a
Division  a copy of the  separate  financial  statements  related  to the  other
Divisions.

         Limited  Separate   Shareholder  Rights.  Under  the  Divisional  Stock
Proposal,  holders of the Agouron Pharmaceuticals Stock would not have any legal
rights  specifically  related to the assets attributed to the Oncology Division,
and the  shareholders  of the Oncology  Division would not have any legal rights
specifically related to the assets attributed to Agouron Pharmaceuticals, except
(i) as set forth in the provisions  relating to dividend and liquidation  rights
and  requirements for a mandatory  exchange of the Oncology  Division Stock upon
the  disposition  of all or  substantially  all of  the  properties  and  assets
allocated  to the  Oncology  Division,  as  described  under  "Divisional  Stock
Proposal--Description  of  Capital  Stock--General   Redemption  and  Conversion
Provisions" and (ii) separate voting rights in limited circumstances as required
by the  California  Corporations  Code,  as  discussed  below  under  "--Limited
Separate  Voting Rights;  Variable  Voting  Rights."  Separate  meetings for the
holders of Agouron Pharmaceuticals Stock and Oncology Division Stock will not be
held.

         Holders of Agouron  Pharmaceuticals  Stock and Oncology  Division Stock
will be common  shareholders of the Company,  and will continue to be subject to
all the  risks  associated  with an  investment  in the  Company  and all of its
businesses and liabilities. The Company and its subsidiaries will continue to be
responsible for each of their respective liabilities.

         Limited  Separate  Voting Rights;  Variable  Voting  Rights.  Under the
Divisional Stock Proposal, holders of both the Agouron Pharmaceuticals Stock and
of the Oncology  Division  Stock will vote  together as a single  voting  group,
except  in  certain   limited   circumstances   provided  under  the  California
Corporations  Code.  Accordingly,  except in limited  circumstances,  holders of
shares of one series of Common Stock could not bring a proposal to a vote of the
holders of that series of Common Stock only,  but would be required to bring any
proposal to a vote of all common shareholders. If a separate vote on a matter by
the holders of either the Agouron Pharmaceuticals Stock or the Oncology Division
Stock is not required under the California  Corporations  Code, and if the Board
does not require a separate vote,  either class of Common Stock that is entitled
to more than the number of votes  required  to approve  such matter will be in a
position  to control  the  outcome  of such vote even if the  matter  involves a
divergence  or  conflict  of  the  interests  of  the  holders  of  the  Agouron
Pharmaceuticals   Stock  and  the  Oncology  Division  Stock.  See  "--Potential
Divergence  of  Interests;   No  Specific  Procedures  for  Resolution  and  "--
Allocation of Proceeds of Mergers or Consolidations."

         Conversely, if a separate vote on a matter by the holders of either the
Agouron  Pharmaceuticals  Stock or the Oncology Division Stock is required under
the California  Corporations  Code, by stock market rules or by the Board,  such
holders of either Agouron Pharmaceuticals Stock or Oncology Division Stock could
prevent approval of such matter,

<PAGE>



even if the holders of a majority of the total  number of votes cast or entitled
to be cast  with  respect  to both the  Agouron  Pharmaceuticals  Stock  and the
Oncology  Division Stock voting together as a group were to vote in favor of it.
See  "Proposal  2 --  The  Divisional  Stock  Proposal--Description  of  Capital
Stock--Voting Rights"."

         Each share of Agouron  Pharmaceuticals  Stock will have one vote.  Each
share of Oncology Division Stock will have ____ vote until June 30, 2000, and on
July 1, 2000 and on each July 1 every two years thereafter,  the number of votes
to which each share of Oncology  Division  Stock is entitled will be adjusted to
reflect the ratio of the weighted average market  capitalization of the Oncology
Division  Stock  and the  Agouron  Pharmaceuticals  Stock as of such  date.  The
relative  market  capitalization  of each series of Oncology  Division Stock and
Agouron  Pharmaceuticals  Stock shall be determined by multiplying the number of
outstanding  shares of each series by the Fair Market Value of one share of such
series.  The formula is intended to equate the  proportionate  per share  voting
rights of each series of Common Stock to their respective market  capitalization
from time to time.  Accordingly,  the relative voting power per share of Agouron
Pharmaceuticals  Stock and Oncology  Division Stock will fluctuate  based on the
respective  Fair Market Values of the two series of Common  Stock.  "Fair Market
Value" as of any date means the average of the daily average of high and low per
share sales prices as reported by the Nasdaq National Market (or the appropriate
exchange or stock market on which such shares are traded) for the 20 consecutive
trading days commencing on the 30th trading day prior to such date. In the event
such sales prices are  unavailable,  Fair Market Value will be determined by the
Board.  Fair  Market  Value could be affected  by many  factors,  including  the
results of operations of the Company and each of the Divisions,  trading volume,
share issuances and repurchases, and general economic and market conditions. See
"Proposal  2 -- The  Divisional  Stock  Proposal--Description  of Capital  Stock
- --Voting  Rights."  Changes in the aggregate  votes or relative  voting power of
Agouron  Pharmaceuticals  Stock or the Oncology Division Stock could result from
the market's reaction to a decision by the Company's management or Board that is
perceived to affect  differently one series of Common Stock in comparison to the
other or the issuance or repurchase of shares of Common Stock of either  series.
Upon the approval by shareholders  and the filing of the Restated  Articles with
the California Secretary of State, holders of Agouron  Pharmaceuticals Stock and
Oncology Division Stock will have  approximately __% and __%,  respectively,  of
the total voting power of the Company.  As a result,  on matters  submitted to a
vote of the common  shareholders  as a group,  the preferences of the holders of
Agouron  Pharmaceuticals  Stock are likely to dominate and determine the outcome
of such vote unless and until the relative number of shares  outstanding  and/or
the  market  value of each  series  of the  Company's  Common  Stock  materially
changes.

         Fiduciary Duties of the Board; No Definitive Precedent Under California
Law.  Under the  California  Corporations  Code,  each  member of the Board must
discharge  his or her duties in a manner he or she  believes in good faith to be
in the best interests of the  corporation  and its  shareholders  with the care,
including  reasonable  inquiry,  an ordinarily prudent person in a like position
would exercise under similar circumstances. Although the Company is not aware of
any precedent  concerning the manner in which principles of California law would
be  applied  in  the  context  of  the  capital  structure  contemplated  by the
Divisional  Stock  Proposal,  California  courts  generally  apply the statutory
standard  described above to determine if a board of directors has satisfied its
fiduciary duties.  Courts  interpreting  California law have held that directors
satisfy their fiduciary duties if they make a good faith business  determination
in an informed and deliberate manner with a careful  consideration of the action
to be taken. If the Board acts in accordance with the standards  described above
with respect to any matter having a disparate impact upon the holders of Agouron
Pharmaceuticals  Stock or the holders of Oncology Division Stock, it should have
a defense  to any  challenge  made by or on behalf of either  group of  holders.
Nevertheless,  a California  court hearing a case involving such a challenge may
decide to apply  principles of California law other than those discussed  above,
or,  because  such a case could be a case of first  impression,  may fashion new
principles  of  California   law  to  decide  such  a  case.   There  may  arise
circumstances involving a divergence or conflict of the interests of the holders
of Agouron Pharmaceuticals Stock and holders of Oncology Division Stock in which
the Board is held to have properly discharged its duty to act in accordance with
its good faith  business  judgment of the best  interests  of the Company but in
which  holders of  Agouron  Pharmaceuticals  Stock or  Oncology  Division  Stock
consider themselves to be disadvantaged  relative to the other series. In such a
case,  such holders might not have any remedy under  California law with respect
to the circumstances giving rise to the divergence or conflict of interests.

         Disproportionate ownership interests of members of the Board in Agouron
Pharmaceuticals  Stock or Oncology Division Stock or disparity in the respective
market  values of the Agouron  Pharmaceuticals  Stock and the Oncology  Division
Stock held by such directors could create  potential  conflicts of interest when
directors are faced with decisions that could have  different  implications  for
the different  series.  See  "--Potential  Divergence of Interests;  No Specific
Procedures   for   Resolution"   and   "Proposal    2--The    Divisional   Stock
Proposal--Certain  Management and Allocation  Policies--Fiduciary and Management
Responsibilities."



<PAGE>



         Management and  Allocation  Policies  Subject to Change.  The Board has
adopted certain management and allocation policies described herein with respect
to  cash   management,   the  allocation  of  corporate   expenses,   rights  to
commercialize products,  inter-Division  transactions and other matters, any and
all of  which  could  be  modified  or  rescinded  by  the  Board,  in its  sole
discretion,  without the approval of shareholders,  although there is no present
intention  to do so. The Board could also adopt  additional  policies  depending
upon the  circumstances.  The Board  could  decide to  modify  or  rescind  such
policies,  or to adopt  additional  polices,  and any such  decision  could have
disparate  effects  upon  holders of shares of any series of Common  Stock.  Any
determination  of the Board to  modify or  rescind  such  policies,  or to adopt
additional  policies,  including  any such  decision  that would have  disparate
impacts  upon holders of Agouron  Pharmaceuticals  Stock and holders of Oncology
Division Stock, would be made in accordance with the Board's good faith business
judgment of the best  interests of the Company,  taking into  consideration  the
interests  of all common  shareholders.  See  "Proposal  2 --  Divisional  Stock
Proposal--Management and Allocation Policies."

         Potential   Divergence  of  Interests;   No  Specific   Procedures  for
Resolution.  Occasions  may arise when the  interest  of the  holders of Agouron
Pharmaceuticals  Stock and the holders of Oncology Division Stock may diverge or
appear to diverge.  Examples include, among others,  determinations by the Board
to:  (i)  allocate  resources  and  financial  support  to  or  pursue  business
opportunities or operational  strategies  through one Division instead of one or
more of the other Divisions;  (ii) exchange each  outstanding  share of Oncology
Division  Stock for cash or  shares  of  Agouron  Pharmaceuticals  Stock,  (iii)
approve the disposition of all or substantially all of the properties and assets
of the Oncology Division,  (iv) allocate consideration to be received by holders
of Common  Stock in  connection  with a merger or  consolidation  involving  the
Company  among holders of different  series of Common  Stock,  (v) if and to the
extent there are Designated Shares, allocate the proceeds of future issuances of
the Oncology Division Stock either to Agouron  Pharmaceuticals as a reduction in
the  number of  Oncology  Division  Designated  Shares  or to the  equity of the
Oncology  Division,  (vi) pay or omit dividends on any series of Common Stock or
(vii)  approve  transactions  involving the transfer of funds or assets from one
Division to the other or make other  operational  or  financial  decisions  with
respect to one Division that could be considered to be  detrimental to the other
Division.

         Other  than as  described  under  "Proposal  2 - The  Divisional  Stock
Proposal - Management and Allocation Policies," no specific procedures have been
adopted for  consideration of matters  involving a divergence of interests among
the holders of the Company's  Common Stock.  The policies that have been adopted
could be modified or rescinded by the Board, in its sole discretion, without the
approval of shareholders,  although there is no present  intention to do so. The
Board could also adopt  additional  policies.  The Board intends to exercise its
judgment from time to time,  depending on the  circumstances,  as to how best to
obtain  information  regarding  the  divergence  (or  potential  divergence)  of
interests,  under what circumstances to seek the assistance of outside advisors,
whether a committee of the Board should be appointed to address the matter,  and
how to  assess  which  available  alternative  is in the best  interests  of the
Company  and all of its  shareholders.  The Board  believes  the  advantages  of
retaining flexibility in determining how best to fulfill its responsibilities in
such  circumstances  as they may arise  outweigh any perceived  advantages  from
attempting  to adopt  specific  procedures  in advance to cover all  conceivable
circumstances.   Each  of  the  foregoing  potential  diverging  or  conflicting
interests is discussed below:

         Operational  and  Financial  Decisions.  The Board  could,  in its sole
discretion,  from time to time,  make  operational  and  financial  decisions or
implement  policies  that affect  disproportionately  the  businesses of Agouron
Pharmaceuticals and the Oncology Division, such as transfers of services,  funds
or  assets  between  Divisions  and  other  inter-Division   transactions,   the
allocation of financing  opportunities  in the public markets and the allocation
of business opportunities, resources and personnel that may be suitable for both
Divisions. Any such decision may favor one Division at the expense of the other.
For example,  the decision to obtain funds for one Division may adversely affect
the ability of the other  Division to obtain funds  sufficient  to implement its
growth  strategies.  All such  decisions  will be made by the  Board in its good
faith business judgment or in accordance with procedures and policies adopted by
the Board from time to time,  including the policies  described  under "Proposal
2--The Divisional Stock Proposal--Management and Allocation Policies," to ensure
that such decisions will be made in a manner  consistent with the best interests
of  the  Company,   taking  into  consideration  the  interests  of  all  common
shareholders.  For further discussion of potential divergence of interests,  see
"--Fiduciary Duties of the Board; No Definitive Precedent Under California Law,"
"--Transfers of Funds Between Divisions;  Equity  Contributions,"  and "Proposal
2--The Divisional Stock Proposal--Management and Allocation Policies."

         Optional  Exchange of Oncology  Division Stock. The Board could, in its
sole discretion and without shareholder  approval,  determine to exchange shares
of Oncology Division Stock for cash or shares of Agouron  Pharmaceuticals  Stock
(or any  combination  thereof)  at a 25% premium  over Fair Market  Value of the
Oncology Division Stock at any time. Any such  determination  could be made at a
time  when  either  or both  of the  Oncology  Division  Stock  and the  Agouron
Pharmaceuticals  Stock may be considered to be  overvalued  or  undervalued.  In
addition,  any such  conversion at any premium would dilute the interests in the
Company of the holders of the Agouron Pharmaceuticals Stock and would

<PAGE>
preclude holders of the Oncology  Division Stock from retaining their investment
in a security that is intended to reflect  separately  the  performance  of that
Division.   If  such   exchange  is   perceived   as  dilutive  to  the  Agouron
Pharmaceuticals Stock, the market price of such stock may be adversely affected.
The  Company  cannot  predict  the  impact on the market  prices of the  Agouron
Pharmaceuticals  Stock or the Oncology  Division  Stock of its ability to effect
any such  exchange or the effect,  if any,  that the  exercise by the Company of
this   exchange   right   would  have  on  the  market   price  of  the  Agouron
Pharmaceuticals Stock or the Oncology Division Stock prevailing at such time. In
determining  whether to convert  the  Oncology  Division  Stock into the Agouron
Pharmaceuticals  Stock,  the Board  will act in  accordance  with its good faith
business  judgment  that any such  conversion  is in the best  interests  of the
Company as a whole, but not necessarily in the best interests of either Division
individually.  See "Proposal 2--The  Divisional Stock  Proposal--Description  of
Capital Stock--General Redemption and Conversion Provisions."

         Fair Value Upon Disposition of Division  Assets.  As long as the assets
attributed to a Division  continue to represent less than  substantially  all of
the properties and assets of the Company,  the Board may approve sales and other
dispositions of any amount of the properties and assets of such Division without
shareholder approval. The proceeds from any such sale would be assets attributed
to such  Division  and used  for its  benefit,  subject  to the  management  and
allocation   policies   described  under  "Proposal   2--The   Divisional  Stock
Proposal--Management  and  Allocation  Policies."  The Restated  Articles  would
contain provisions that,  following a disposition of all or substantially all of
the assets of the Oncology  Division,  the shares of Oncology Division Stock are
subject  to  mandatory  exchange  by the  Company  for cash or shares of Agouron
Pharmaceuticals  Stock (or any  combination  thereof) at a 25% premium  over the
Fair Market Value of the Oncology  Division  Stock as  determined by the trading
prices  during a specified  period  prior to  consummation  of the  disposition.
Consequently, holders of Oncology Division Stock may receive a greater or lesser
premium for their  shares than any premium  that might be paid by a  third-party
buyer of all or  substantially  all of the assets of the Oncology  Division.  In
addition,  any such exchange could be made at a time when the Oncology  Division
Stock or the Agouron Pharmaceuticals Stock may be considered to be overvalued or
undervalued.  See "--Optional Exchange of Oncology Division Stock." The terms of
the Oncology Division Stock and the Agouron Pharmaceuticals Stock do not require
the Board to select the option that would  result in the  distribution  with the
highest value to the holders of the Oncology Division Stock or with the smallest
effect on the Agouron  Pharmaceuticals  Stock.  The Board would select an option
based  upon its good faith  business  judgment  that such  option is in the best
interests of the Company,  taking into consideration the interests of all common
shareholders.  See  "--Fiduciary  Duties of the Board;  No Definitive  Precedent
under California Law."

         Allocation of Proceeds upon Issuance of Oncology Division Stock. If and
to the extent there are Oncology  Division  Designated Shares at the time of any
sale of  shares of  Oncology  Division  Stock,  the Board  would  determine  the
allocation of the proceeds of such sale between Agouron  Pharmaceuticals and the
Oncology Division.  In such case, the Board could (assuming there are sufficient
Oncology  Division  Designated  Shares) allocate 100% of the net proceeds of the
sale of Oncology Division Stock to Agouron  Pharmaceuticals or allocate all such
proceeds to the  Oncology  Division,  and such net  proceeds  would be reflected
entirely on the financial statements of the Division to which such proceeds were
allocated.  Any such allocation of net proceeds to Agouron Pharmaceuticals would
reduce the number of Oncology Division Designated Shares.

         No  Assurance  of  Payment  of  Dividends.  The  Company  has not  paid
dividends  in the past  and does not  anticipate  paying  any  dividends  in the
foreseeable  future. Any dividends on the Agouron  Pharmaceuticals  Stock or the
Oncology Division Stock that may be declared by the Board will be payable out of
the lesser of: (i) the funds of the Company legally  available for such purpose,
which are determined on the basis of the entire Company,  and (ii) the Available
Dividend Amount with respect to the relevant Division, which in general is equal
to the amount legally  available for such purpose  determined in accordance with
California  law applied as if such  Division were a separate  corporation.  Such
dividends are further  subject to the prior payment of dividends on  outstanding
shares of any class or series of capital stock of the Company with  preferential
dividend  provisions.  Any net losses of the Company  (without regard to whether
such  losses  arose  from  any  specific   Dividends),   and  any  dividends  or
distributions  on, or repurchases of, the Agouron  Pharmaceuticals  Stock or the
Oncology Division Stock, and dividends on, and certain repurchases of, preferred
stock,  will reduce the funds of the Company  legally  available  for payment of
dividends on both the Agouron  Pharmaceuticals  Stock and the Oncology  Division
Stock.  Subject  to  limitations  of the  California  Corporations  Code and the
Restated  Articles,   the  Board  may  declare  and  pay  dividends  on  Agouron
Pharmaceuticals  Stock and Oncology  Division Stock in equal or unequal amounts,
or may  decide  not to  declare  and pay  such  dividends,  notwithstanding  the
relationship   between  the  Available   Dividend  Amounts  for  the  respective
Divisions,  the  respective  amounts of prior  dividends paid on, or liquidation
rights of, the Agouron  Pharmaceuticals  Stock or the Oncology Division Stock or
any other factor.  See "Proposal 2--The Divisional Stock Proposal  --Description
of Capital Stock --Dividend Policy and--Dividend Rights."



<PAGE>

         Allocation  of  Proceeds  of Mergers or  Consolidations.  The  Restated
Articles  do not  contain  any  provisions  governing  how  consideration  to be
received  by  the  Company's   shareholders  in  connection  with  a  merger  or
consolidation  involving  the  Company  (in  which  the  Common  Stock  is to be
converted  into other  securities,  cash or other  property)  is to be allocated
among  holders of the Oncology  Division  Stock and the Agouron  Pharmaceuticals
Stock.  In any such merger or  consolidation,  the  allocation of  consideration
would be  determined by the Board and would be subject to approval by a majority
of the  voting  power of all  shares  of  Common  Stock of the  Company,  voting
together as one group.

         Transfer  of  Funds  Among  Divisions;  Equity  Contributions.  If  the
Divisional  Stock  Proposal is approved by  shareholders,  all debt  incurred or
stock issued by the Company and its  subsidiaries  following the issuance by the
Company of the Agouron  Pharmaceuticals  Stock and the Oncology  Division  Stock
would be (unless the Board otherwise  provides)  specifically  attributed to and
reflected in the  financial  statements of the Division that includes the entity
which  incurred  the debt or  issued  the stock or, in the case of debt or stock
that  is  not  specifically   attributed  to  one  of  the  Divisions,   Agouron
Pharmaceuticals. The Board could, however, determine from time to time that debt
incurred  or  stock  issued  by  entities  included  in  a  Division  should  be
specifically  attributed to and reflected in the financial  statements of one of
the other  Divisions  to the extent that the debt is  incurred or the  preferred
stock is issued for the benefit of such other Division.

         To the extent cash needs of one Division  exceed cash  provided by such
Division,  one of the other Divisions may transfer funds to such other Division.
The  Company  has  provided  and  will  continue  to  provide  centralized  cash
management  functions under which cash receipts of certain entities  included in
the  Divisions  are  remitted  to  Agouron   Pharmaceuticals  and  certain  cash
disbursements  of the other Divisions will be funded by Agouron  Pharmaceuticals
on a daily  basis.  Such  transfers  of  funds  between  the  Divisions  will be
reflected as  borrowings or as the creation of, or at the option of the Board an
increase  or  reduction  in the  number of  Designated  Shares  of the  relevant
Division. In addition, the Board has approved an allocation of up to $25 million
in cash from  Agouron  Pharmaceuticals  to the  Oncology  Division  (the "Equity
Line").  Amounts  drawn on the Equity Line will be exchanged  automatically  for
Oncology  Division  Designated  Shares  based  on the Fair  Market  Value of the
Oncology Division Stock on the date of exchange. See "Proposal 2--The Divisional
Stock Proposal--Management and Allocation Policies."

         There are no specific  criteria for determining when a transfer will be
reflected  as a borrowing  or as the creation of, or an increase or reduction in
the number of, Oncology Division  Designated  Shares.  The Board expects to make
such  determinations,  either in  specific  instances  or by  setting  generally
applicable policies from time to time, after consideration of such factors as it
deems relevant,  including,  without limitation,  the needs of the Company,  the
financing  needs and objectives of the Divisions,  the investment  objectives of
the Divisions,  the  availability,  cost and time  associated  with  alternative
financing sources, prevailing interest rates and general economic conditions.

         Loans from one Division to another  Division will bear interest at such
rates and have such repayment  schedules and other terms as are established from
time to time by, or pursuant to procedures  established by, the Board. The Board
expects to make such determinations,  either in specific instances or by setting
generally  applicable  policies from time to time,  after  consideration of such
factors as it deems relevant,  including,  without limitation,  the needs of the
Company,  the use of proceeds by and creditworthiness of the recipient Division,
the capital  expenditure  plans and investment  opportunities  available to each
Division  and the  availability,  cost  and  time  associated  with  alternative
financing sources.

         Although  the  creation  of or any  increase  in the number of Oncology
Division  Designated  Shares  resulting from an equity  contribution  by Agouron
Pharmaceuticals  to the Oncology Division or an exchange of amounts  outstanding
under the Equity  Line (or any  decrease  in such  number of  Oncology  Division
Designated  Shares) would be determined by reference to the Fair Market Value of
the  Oncology  Division  Stock as of the date of such  event,  an  increase  (or
decrease)  could  occur at a time when the  Oncology  Division's  stock could be
considered  undervalued  or  overvalued.  In  addition,  the  creation  of or an
increase  in the number of  Oncology  Division  Designated  Shares may result in
dilution in net  tangible  book value per share to the  existing  holders of the
Oncology Division Stock.

         Absence  of  Approval  Rights  with  Respect  to  Future  Issuances  of
Authorized  Shares.  The approval of the shareholders of the Company will not be
sought by the Company for the  issuance of  authorized  but  unissued  shares of
Agouron  Pharmaceuticals  Stock,  Oncology  Division Stock or additional  series
established by the Board or securities of the Company that are convertible  into
or  exchangeable  for such  shares,  unless  deemed  advisable  by the  Board or
required  by  applicable  law,  regulation  or  stock  market  requirements.  In
addition, the Board may, without soliciting the vote of shareholders,  designate
and  issue  shares of a new  series of Common  Stock  intended  to  reflect  the
performance of new or additional divisions as otherwise described herein.



<PAGE>



         No  Assurances  as to  Market  Price.  Because  there has been no prior
market for the Agouron  Pharmaceuticals  Stock and the Oncology  Division Stock,
there can be no assurance as to their market prices following  issuance thereof.
There  can be no  assurance  that the  combined  market  values  of the  Agouron
Pharmaceuticals  Stock and the  Oncology  Division  Stock held by a  shareholder
immediately  following the  effectiveness  of the Divisional Stock Proposal will
equal or exceed  the  market  value of the  Existing  Common  Stock held by such
shareholder  prior  to  the  announcement  or  effectiveness  of  the  Company's
Divisional Stock Proposal, and the combined market value could be less than such
market value of the Existing Common Stock.  Until an orderly market develops for
the  Agouron  Pharmaceuticals  Stock  and the  Oncology  Division  Stock,  their
respective  trading  prices may fluctuate  significantly.  If an active  trading
market does develop,  there can be no assurance that it will be maintained.  The
prices at which the shares of Agouron Pharmaceuticals Stock or Oncology Division
Stock will trade will be determined in the trading markets and may be influenced
by many factors,  including the consolidated  results of the Company, as well as
the respective performance of Agouron Pharmaceuticals and the Oncology Division,
investors'  expectations  for the Company and each Division,  trading volume and
general  economic and market  conditions.  There is no assurance  that investors
will assign value to the Agouron  Pharmaceuticals Stock or the Oncology Division
Stock  based  on  the  reported  financial  results  and  fundamental  operating
prospects  of the related  Division.  Financial  results of the  Divisions  that
impact the Company's  consolidated  results of operations or financial condition
could  affect the market  prices of the  Agouron  Pharmaceuticals  Stock and the
Oncology  Division Stock. In addition,  the Company cannot predict the impact on
the market values of the Agouron  Pharmaceuticals Stock or the Oncology Division
Stock, or certain terms of the securities, such as the ability of the Company to
convert shares of the Oncology  Division  Stock,  the discretion of the Board to
make various determinations, or the impact on the market value of each series of
Common  Stock  of its  voting  power.  See  also  "--Risks  Related  to  Agouron
Pharmaceuticals and the Oncology Division - Volatility of Stock Price."

         No Adjustment to Liquidating Distributions. In the event of a voluntary
or  involuntary  dissolution,  liquidation  or winding up of the  affairs of the
Company  (other  than  pursuant  to a merger,  business  combination  or sale of
substantially  all  assets),  holders of  outstanding  shares of each  series of
Common Stock would receive the assets,  if any,  remaining for  distribution  to
common  shareholders  on a per share basis in proportion to the  respective  per
share liquidation units of such series.  The Restated Articles provide that each
share of Agouron  Pharmaceuticals Stock has 100 liquidation units and each share
of Oncology  Division Stock has ___ liquidation  units.  Because the liquidation
units will not be adjusted to reflect  changes in the  relative  market value or
performance of each of the Divisions,  the per share liquidating distribution to
a holder of Agouron  Pharmaceuticals  Stock or  Oncology  Division  Stock is not
likely to  correspond to the value of the assets of Agouron  Pharmaceuticals  or
the Oncology Division,  respectively, at the time of a dissolution,  liquidation
or  winding  up  of  the  Company.   See  "Proposal   2--The   Divisional  Stock
Proposal--Description of Capital Stock--Liquidation Rights."

         Use of Tax Benefits by Other  Division.  The Company's  management  and
allocation  policies  provide  that,  to the  extent any  Division  is unable to
utilize  its  operating  losses or other  projected  tax  benefits to reduce its
current  or  deferred  income  tax  expense,  such  losses  or  benefits  may be
reallocated to the other Division on a quarterly  basis for financial  reporting
purposes.  Accordingly,  although  the actual  payment  of taxes is a  corporate
liability of the Company as a whole,  separate financial statements are prepared
for each  Division and any losses that cannot be utilized by a Division  will be
allocated to the profitable  Division  rather than carried forward to reduce the
future tax  liability of the Division  generating  such  losses.  Since  Agouron
Pharmaceuticals is currently profitable and the Oncology Division is expected to
incur  losses for at least the next  several  years,  this  could  result in the
Oncology  Division  being charged a greater  portion of the total  corporate tax
liability and reporting lower earnings after taxes in the future than would have
been the case if such Division had retained its losses or other  benefits in the
form of a net operating  loss carry  forward.  See "Proposal  2--The  Divisional
Stock Proposal--Management and Allocation Policies."

         Limitations   on  Potential   Unsolicited   Acquisitions.   If  Agouron
Pharmaceuticals  or the Oncology  Division were  stand-alone  corporations,  any
person interested in acquiring either of such corporations  without  negotiation
with management could seek control of the outstanding  stock of such corporation
by means of a tender  offer or proxy  contest.  Although  the  Divisional  Stock
Proposal  would  create two series of Common  Stock that are intended to reflect
the separate performance of the Divisions, a person interested in acquiring only
one Division without  negotiation  with the Company's  management would still be
required  to  seek  control  of  the  voting  power  represented  by  all of the
outstanding  capital stock of the Company entitled to vote on such  acquisition,
including  the  series of  Common  Stock  related  to the  other  Division.  See
"--Limited  Separate  Shareholder  Rights,"  "--Limited  Separate Voting Rights;
Variable   Voting    Rights,"   and   "Proposal    2--The    Divisional    Stock
Proposal--Description of Capital Stock--Voting Rights."

         Anti-Takeover  Considerations.  The Company  has adopted a  Shareholder
Rights  Plan  pursuant  to which each share of Common  Stock  (including,  after
implementation of the Divisional Stock Proposal, if approved,  shares of Agouron
Pharmaceuticals Stock and Oncology Division Stock) is accompanied by a preferred
stock purchase right. These rights will cause a substantial dilution to a person
or group that attempts to acquire the Company on terms not

<PAGE>



approved  by the Board and may have the  effect of  deterring  hostile  takeover
attempts. In addition, the existence of two series of Common Stock could present
complexities and could in certain  circumstances  pose obstacles,  financial and
otherwise, to an acquiring person. The Shareholder Rights Plan and the existence
of the two series of Common Stock could,  under certain  circumstances,  prevent
shareholders from profiting from an increase in the market value of their shares
as a result of a change in control of the Company by delaying or preventing such
change in control.  Although the Board has no present  intention of doing so, it
could issue shares of Preferred  Stock or of a new or existing  series of Common
Stock that could be used to create voting or other  impediments or to discourage
persons  seeking to gain  control  of the  Company  and could also be  privately
placed with purchasers favorable to the Board in opposing such action.

Risks Related to Agouron Pharmaceuticals and the Oncology Division

         Early Stage of Product Development;  Uncertainty of Product Development
and Market Acceptance;  Technological Uncertainty. The Company has completed the
development and  commercialization of only one Agouron  Pharmaceuticals  product
and no Oncology  Division  products  and does not expect to have any  additional
products  commercially  available  until  calendar  2000,  if at all.  While the
Company has received  regulatory  approval to begin human  clinical  testing for
certain of its compounds  (see Annex IV and Annex V), these and other  compounds
currently  being  developed  by the Company will  require  further  research and
development,  including  extensive  additional  preclinical  and human  clinical
testing,  prior to submission of any regulatory  application for commercial sale
of  such  compounds.  There  can  be no  assurance  that  further  research  and
development  will be  successful  or will result in drugs that will  qualify for
approval by  regulatory  authorities  for  commercial  sale or be  accepted  and
successful in the marketplace. In addition, clinical testing of a pharmaceutical
product  is itself  subject to  approvals  by  various  governmental  regulatory
authorities.  No  assurance  can be given that the Company  will be permitted by
regulatory  authorities to conduct planned  additional  clinical  testing of the
Company's compounds in any particular country of the world, including the United
States, or that, if permitted,  such additional clinical testing will prove that
such  drugs are safe and  efficacious  to the  extent  necessary  to permit  the
Company to obtain marketing approvals for them from regulatory authorities.  The
Company may encounter  problems or delays relating to research and  development,
regulatory  approval and  manufacturing and the failure to address such problems
or delays could have a material  adverse  effect on the  Company's  business and
prospects. Even if FDA and foreign regulatory approvals for the marketing of any
products being developed by the Company are obtained,  there can be no assurance
that such products will be accepted and successful in the marketplace.

         While the Company  believes it has  demonstrated the utility of certain
of its  potential  products in  preclinical  testing and in phase I and phase II
human clinical  trials,  extensive  further  clinical testing of these potential
products  is  required  before the  Company  can seek  marketing  approval  from
regulatory authorities.  Furthermore, results obtained in preclinical studies or
in phase I and phase II human clinical trials are not necessarily  indicative of
results that will be obtained in subsequent  or more  extensive  preclinical  or
clinical testing.

         Uncertainty Associated with Clinical Testing. Before seeking regulatory
approvals  for the  commercial  sale of any of its  products,  the Company  must
undertake extensive preclinical and clinical testing to demonstrate their safety
and efficacy in humans.  Historical  results of clinical testing of VIRACEPT and
the Company's other clinical  programs are not necessarily  predictive of future
results.  There can be no  assurance  that  clinical  studies of products  under
development  will  demonstrate  the safety and  efficacy of such  products.  The
failure to  adequately  demonstrate  the safety and  efficacy  of a  therapeutic
product could delay or prevent regulatory approval of the product.  There can be
no assurance that unacceptable  toxicities or side effects will not occur at any
time in the course of human  clinical  trials or commercial use of the Company's
drugs. The appearance of any such unacceptable  toxicities or side effects could
interrupt,  limit,  delay or abort the development of any of the Company's drugs
or, if  previously  approved,  necessitate  their  withdrawal  from the  market.
Furthermore,  there can be no assurance that disease  resistance  will not limit
the efficacy of VIRACEPT or other of the  Company's  drugs,  if any.  Even after
being  approved by FDA or foreign  regulatory  authorities,  products  may later
exhibit adverse effects that prevent their  widespread use or necessitate  their
withdrawal  from the market.  Additionally,  the Company has made and may in the
future make changes to the  formulation  of its drugs and/or the  processes  for
manufacturing  its drugs.  Any such  changes  in  formulation  or  manufacturing
processes could result in delays in conducting further  preclinical and clinical
testing.  There can be no assurance that any products  under  development by the
Company will be safe when  administered  to patients.  Delays in planned patient
enrollment in the Company's  current  clinical  trials or future clinical trials
may result in increased costs, program delays or both. There can be no assurance
that if clinical  trials are  completed the Company will be able to submit a New
Drug  Application  and/or Product  License  Application as scheduled or that any
such application will be reviewed and approved by FDA in a timely manner,  or at
all.  Even  after  being  approved  by FDA or  foreign  regulatory  authorities,
products may later exhibit adverse effects that prevent their  widespread use or
necessitate their withdrawal from the market. There can be no assurance that any
products  under  development  by the Company will be safe when  administered  to
humans.


<PAGE>




         History of Operating Losses and Uncertainty of Continued  Profitability
of Agouron Pharmaceuticals;  Dependence on VIRACEPT. Agouron Pharmaceuticals has
had product sales only since fiscal 1997 and reported net income only for fiscal
1998.  Continued  profitability of Agouron  Pharmaceuticals will be dependent in
the  foreseeable  future upon the sales of  VIRACEPT.  There can be no assurance
that  commercial  sales  of  VIRACEPT  alone  will be able to  maintain  Agouron
Pharmaceuticals' substantial rate of growth in revenues or to either generate or
maintain  profitable  operating results on a consistent basis. Any disruption in
the supply or  manufacturing  process for VIRACEPT  may have a material  adverse
effect on  revenues.  Operating  results will also be impacted by the timing and
amount of Agouron  Pharmaceuticals'  research,  development  and clinical  trial
programs,  the level of its selling and marketing  efforts,  the  efficiency and
cost of its  manufacturing  activities,  the nature of its business  development
activities  and on the  timing  and  receipt  of fees from  existing  and future
collaborative relationships.

         History of Operating Losses; Lack of Revenues of the Oncology Division.
The Oncology  Division  has  recorded  operating  losses  since  inception.  The
Oncology  Division  has no product  sales and the only source of revenues in the
past has  been  from  payments  by  collaborative  partners.  The  collaborative
agreements  with  Hoffmann-LaRoche  Inc,  and  F.  Hoffmann-La  Roche  Ltd  that
accounted  for  substantially  all of Oncology  Division's  contract and license
revenues for fiscal 1998,  1997 and 1996 have been  terminated,  and the Company
anticipates  no contract  and license  revenues  for the  Oncology  Division for
fiscal  1999.  Because  all of the  Oncology  Division's  potential  therapeutic
products  will  require  substantial   additional   research,   development  and
preclinical and clinical testing prior to  commercialization,  it may be several
years, if ever, before the Oncology Division  recognizes  revenue from sales and
royalties on these potential  products.  Accordingly,  the Oncology  Division is
expected  to  experience  significant  operating  losses  for at least  the next
several  years.  The Oncology  Division may never achieve a profitable  level of
operations  and that  profitability,  if  achieved,  may not be  sustained on an
ongoing basis. For the immediate  future,  the Oncology Division intends to rely
entirely on the funding capabilities of Agouron Pharmaceuticals. There can be no
assurance that Agouron Pharmaceuticals will be capable of continuing to fund the
Oncology Division as currently anticipated.

         Additional  Financing  Requirements and Access to Capital.  The Company
has expended  approximately  $449,000,000 on research and development activities
since its  inception.  Both Agouron  Pharmaceuticals  and the Oncology  Division
intend in the future to expend substantial additional funds to continue research
and development activities, conduct preclinical studies and tests, conduct human
clinical trials, establish  manufacturing,  sales and marketing capabilities and
market any approved  products.  Additional  funds may be required in  connection
with  collaborative  arrangements  with others and for working capital and other
general corporate needs.

         The Company  believes that its current  capital  resources and existing
contractual  commitments  will  enable it to  maintain  its  current and planned
operations  through at least fiscal 1999.  No assurance  can be given that there
will be no change in the  Company's  operations  that  would  consume  available
resources more rapidly than anticipated.  Additional  funding may be required by
either or both  Agouron  Pharmaceuticals  or the  Oncology  Division  before the
commercialization of any additional products. The future capital requirements of
both  Agouron  Pharmaceuticals  and the  Oncology  Division  will depend on many
factors,  including the product  contribution  to Agouron  Pharmaceuticals  from
commercial sale of VIRACEPT, the progress of research and development, the scope
and results of preclinical  studies and clinical  trials,  the cost,  timing and
outcome of regulatory reviews,  the rate of technological  advances,  the market
acceptance of any approved Company products,  administrative  and legal expenses
and  competitive  factors.  To the  extent  the  capital  resources  of  Agouron
Pharmaceuticals   are   insufficient  to  meet  current  or  planned   operating
requirements of both Agouron Pharmaceuticals and the Oncology Division,  Agouron
Pharmaceuticals  or the Oncology  Division may seek to obtain  additional  funds
through  equity or debt  financing,  collaborative  or other  arrangements  with
corporate partners, licensees and others, and from other sources, which may have
the effect of diluting the holdings of existing  shareholders.  No assurance can
be given that  additional  financing  will be available  when needed or on terms
acceptable  to Agouron  Pharmaceuticals  or the Oncology  Division.  If adequate
funds are not available, Agouron Pharmaceuticals or the Oncology Division may be
required  to  delay or  eliminate  expenditures  for  certain  programs,  cancel
licenses  from  third  parties  or to license  third  parties  to  commercialize
products or  technologies  that either Agouron  Pharmaceuticals  or the Oncology
Division would otherwise seek to develop and commercialize  itself, any of which
could have a material  adverse effect on Agouron  Pharmaceuticals,  the Oncology
Division or the Company.
<PAGE>

     Dependence  on  Others.   The  Company's   strategy  for   development  and
commercialization  of certain of its  products  entails  entering  into  various
arrangements  with  corporate  partners,  licensees  and  others,  and  upon the
subsequent  success  of these  partners,  licensors,  licensees  and  others  in
performing  preclinical and clinical testing,  obtaining  regulatory  approvals,
manufacturing  and  marketing.  These  arrangements  may  require the Company to
transfer  certain  material  rights to such  corporate  partners,  licensees and
others. In the event the Company  determines to license or sublicense certain of
its  commercial  rights,  there can be no assurance such  arrangements  will not
result in reduced product revenue to the Company. While the Company believes its
partners,  licensees  and others will have an economic  motivation to succeed in
performing  their  contractual  responsibilities,   the  amount  and  timing  of
resources  to be  devoted  to these  activities  will be  controlled  by others.
Consequently,  there can be no  assurance  that any  revenues or profits will be
derived from such  arrangements,  that any of the  Company's  current  strategic
arrangements  will be continued or not terminated early or that the Company will
be able to enter into future collaborations.

         Manufacturing  Capabilities.  The Company is  dependent  on a number of
contract  manufacturers for the commercial manufacture of VIRACEPT under current
Good Manufacturing  Practices ("GMP").  Failure to meet GMP standards would have
an adverse impact on the Company's business. No assurance can be given that such
manufacturers can be retained or that such manufacturers will continue to timely
deliver sufficient product quantities at acceptable costs.  Although the Company
is producing clinical quantities of certain chemical compounds in certain of its
laboratory  facilities  that have undergone GMP inspections and been approved by
the State of California,  and has business  relationships with its collaborators
and with  manufacturers  to supply  significant  portions of its clinical  trial
material  requirements,   the  current  facilities  and  existing  manufacturing
relationships of the Company may not be adequate to meet anticipated  commercial
production   needs.   Therefore,   the  Company  will  be  dependent   upon  its
collaborators  and licensees or upon contract  manufacturers  for the commercial
manufacture  of products it may develop.  The Company has limited  experience in
such commercial  manufacturing and related matters and no assurance can be given
that the Company will be able to continue to arrange for contract  manufacturing
or that adequate  supplies of raw materials will be available.  In the event the
Company is unable to obtain  contract  manufacturing  on acceptable  terms,  its
ability to  commercialize  or timely deliver its products at acceptable cost may
be adversely affected.

         Sales and Marketing Capabilities. While the Company has established its
capabilities in the sales, marketing and distribution of pharmaceutical products
in  the  United  States  and  Canada,  there  can  be  no  assurance  that  such
capabilities will be sufficient or successfully  maintained in the United States
or other markets outside of the United States and Canada.  Further, there can be
no assurance that any products,  if approved,  will gain market acceptance.  The
Company's  results of operations  and cash flows for the next several years will
be highly dependent upon the timing and extent of VIRACEPT sales.

         Patents  and  Proprietary  Technology.  The  Company  has been  granted
certain  patents  relating to its  inventions  in the United  States and certain
other  countries.  The Company  also has  various  pending  patent  applications
claiming  inventions  in various  fields.  The  Company  expects to  continue to
attempt to secure patent  protection  for its potential  products,  and that any
such patents  will be owned by the Company and licensed or be made  available to
the applicable Division. The Company believes that its current and future patent
portfolio is important to its future operations.

         Patent   protection   is   recognized   as  being   important   to  the
pharmaceutical  industry in general,  e.g., as providing a period of exclusivity
against generic competition,  which serves as a return for the great expenditure
of resources incurred in discovering and developing a drug and for advancing the
state of the  art.  The  commercial  success  of the  products  of both  Agouron
Pharmaceuticals  and the Oncology Division may depend, in part, on the Company's
ability to enforce its patents  against  infringing  competitors.  Although  the
Company's issued patents, pending patent applications, and future patents may be
of  importance  to the  Divisions,  there can be no  assurance  that  additional
patents will be granted or that any patents now or hereafter  granted will be of
commercial benefit.

         The  granting  of a patent  is not  conclusive  as to the  validity  or
enforceability  of the claims  therein,  which define the scope of the Company's
exclusive rights.  The validity and enforceability of a United States patent, as
well as of a patent from certain other  countries,  may be challenged by a third
party in a litigation  or  proceeding  before a court or patent  office.  If the
validity or enforceability of a patent claim is successfully  challenged in such
a  litigation  or  proceeding,  then third  parties may be free to use a claimed
invention, in some cases without payment to the Company.  Moreover, there can be
no  assurance  that patent  claims  covering a Division's  products  will not be
infringed or that infringement will be avoided by successfully  designing around
a claimed invention.
<PAGE>

         There also can be no assurance  that the  technology or products of the
Divisions,  whether  patented or not, will not infringe third parties'  patents.
The Company is aware of certain patent applications or patents of third parties,
and there may be other patents or patent  applications,  covering subject matter
related to Agouron  Pharmaceuticals  or the Oncology  Division's  technology and
potential products. Research,  development or commercialization of the Company's
products  may  require  that the  Company  obtain  licenses  under  such  patent
applications,  if granted, or patents of third parties. However, there can be no
assurance that the Company will be able to obtain such licenses on  commercially
reasonable terms or at all. If a third party obtains a patent covering a product
of a Division,  the Company could be required to defend against an  infringement
action,  which  could be costly  and  time-consuming.  Furthermore,  any fees or
royalties required to be paid under a patent license,  settlement agreement,  or
litigation judgment could be significant.



<PAGE>



         The Company seeks to protect certain unpatented  proprietary technology
and  know-how   through  the   maintenance  of  trade  secrets  or  confidential
information.  Certain  technology  and know-how of  importance  to the Company's
drug-discovery and manufacturing operations depend on the skills, knowledge, and
experience  of  its  scientific  and  technical  personnel,   for  which  patent
protection  may not be  available.  To help  protect  its  rights,  the  Company
generally  requires  all  employees,  relevant  consultants  and  advisors,  and
collaborators  to  enter  into  confidentiality  agreements.  There  can  be  no
assurance,  however,  that these agreements will provide adequate protection for
the Company's trade secrets,  know-how, or other proprietary  information in the
event of its  unauthorized  use or  disclosure.  Competitors  may  independently
develop  substantially  equivalent  technology,  undermining  the  value  of the
Company's  trade  secrets.  Third parties may even obtain  patents  covering the
Company's  proprietary  technology  or know-how,  which may  adversely  affect a
Division's ability to use such technology or know-how.

         The  costs  of  obtaining  and  enforcing  patents  and  of  protecting
proprietary  technology  may involve a substantial  commitment of either or both
Division's  resources.  Any such  commitment  may  divert  resources  from other
operations of the impacted Division.

         Technological  Change and Intense  Competition.  The pharmaceutical and
biotechnology   industries  are  subject  to  intense   competition   and  rapid
technological  change. The Company believes that  industry-wide  interest in the
application of protein  structure-based  drug design and related technology will
continue and may  accelerate as the technology  becomes more widely  understood.
Competitors  of the  Company in the United  States and abroad are  numerous  and
include,  among others,  pharmaceutical,  biotechnology and chemical  companies,
universities  and  other  research  organizations.  For  example,  HIV  protease
inhibitors developed by Abbott  Laboratories,  Inc., Merck & Co., Inc. and Roche
are currently  being  marketed.  There can be no assurance  that these and other
competitors  will not have  products or succeed in developing  technologies  and
products that are more effective than any which have been or are being developed
by the Company or which  would  render the  Company's  technology  and  products
obsolete and noncompetitive.

         Many of the Company's  competitors have substantially greater financial
and technical resources and production and marketing capabilities and experience
than  the  Company.  In  addition,   many  of  the  Company's  competitors  have
significantly  greater  experience  than the Company in  conducting  preclinical
testing  and  human  clinical  trials  of  new  pharmaceutical  products  and in
obtaining FDA and other regulatory approvals of products.  Accordingly,  certain
of the Company's  competitors may succeed in obtaining  regulatory  approval for
products more rapidly or effectively than the Company. The Company also competes
with respect to manufacturing  efficiency and sales and marketing  capabilities,
areas in which the Company has limited experience.

         Government  Regulation.  Preclinical  studies,  clinical trials and the
production and marketing of the Company's  products and its ongoing research and
development  activities  are  subject to  regulation  by  numerous  governmental
authorities in the United States and other countries.  Rigorous  preclinical and
clinical  testing and  obtaining  regulatory  approvals  can take many years and
require the  expenditure  of  substantial  resources.  Failures or delays by the
Company or its  collaborators,  licensors or  licensees in obtaining  regulatory
approvals  would  adversely  affect the  marketing of products  developed by the
Company and the  Company's  ability to receive  product  revenues or  royalties.
Further,  there  can be no  assurance  that the  Company  or its  collaborators,
licensors or licensees will be able to obtain  necessary  regulatory  approvals.
There can be no  assurance  that  clinical  data will be accepted by  regulatory
agencies or that any approvals will be granted on a timely basis, if at all. Any
significant  delays or  requests  to  provide  additional  data in the  approval
process could have a material adverse effect on the Company.

         If regulatory approval of a drug is obtained, such approval may involve
limitations and  restrictions on the drug's use. In addition,  any marketed drug
and its  manufacturer  are  subject  to  continual  governmental  review and any
subsequent  discovery  of  previously  unrecognized  problems  could  result  in
restrictions  on the product or  manufacturer,  including,  without  limitation,
withdrawal of the product from the market. Failure of the Company to comply with
applicable  regulatory  requirements  can, among other things,  result in fines,
suspension  of  regulatory  approvals,  product  recalls,  seizure of  products,
operating restrictions or criminal prosecution.

         Additionally,  the Company is or may become subject to various federal,
state and local laws,  regulations and recommendations  relating to safe working
conditions,  laboratory and  manufacturing  practices,  the  experimental use of
animals  and  the  use  and  disposal  of  hazardous  or  potentially  hazardous
substances,  including radioactive compounds and infectious disease agents, used
in connection  with  Agouron's  research and  development  work.  The Company is
unable  to  predict  the  extent  of  restrictions  that  might  arise  from any
governmental or administrative action.


<PAGE>




         Volatility  of Stock Price.  The market  price of the  Existing  Common
Stock, like that of the common stock of other biopharmaceutical  companies,  has
in recent  years  fluctuated  significantly,  and it is likely  that  should the
Divisional  Stock  Proposal be approved  and  implemented  the market  prices of
Agouron  Pharmaceuticals  Stock  and  Oncology  Division  Stock  will  fluctuate
significantly  in the future.  Factors such as  announcements  of  technological
innovations  or new  commercial  products  by a  Division  or  its  competitors,
progress with clinical trials, governmental regulation, changes in reimbursement
policies,  developments in patent or other  proprietary  rights of a Division or
its   competitors,   including   litigation,   developments   in  a   Division's
relationships with current or future collaborators and licensees, if any, public
concern as to the safety and  efficacy of drugs  developed by a Division and its
competitors,  changes in  estimates of a Division's  performance  by  securities
analysts,  and general market  conditions  may have a significant  effect on the
market price of the Agouron  Pharmaceuticals  Stock and Oncology Division Stock.
Fluctuations in financial performance of the respective Divisions from period to
period  also may have a  significant  impact on the market  price of the Agouron
Pharmaceuticals Stock and Oncology Division Stock.

         Uncertainty  of  Third-Party  Reimbursement  and Product  Pricing.  The
Company's ability to commercialize  products successfully will depend in part on
the  availability  of  reimbursement  of the costs of such  products and related
treatments at acceptable  levels from  government  authorities,  private  health
insurers  and  other  organizations,  such as health  maintenance  organizations
("HMOs").  There can be no assurance that  reimbursement in the United States or
foreign countries will be available for any products the Company may develop or,
if available, will not be decreased in the future, or that reimbursement amounts
will not reduce the demand for, or the price of, the Company's products, thereby
adversely affecting the Company's business.

         Third-party payors are increasingly  challenging the prices charged for
medical products and services. Also, the trend toward managed health care in the
United States and the concurrent  growth of  organizations,  such as HMOs, which
can control or significantly  influence the purchase of health care services and
products,  as well as  legislative  proposals  to reform  health  care or reduce
government  insurance  programs,  may result in lower prices for  pharmaceutical
products.   The  cost  containment  measures  that  health  care  providers  are
instituting and the effect of any health care reform could materially  adversely
affect the Company's ability to sell its products if successfully  developed and
approved. Moreover, the Company is unable to predict what additional legislation
or  regulation,  if any,  relating  to the health care  industry or  third-party
coverage  and  reimbursement  may be enacted in the future or what  effect  such
legislation or regulation would have on the Company's business.

         Product Liability;  Limited Insurance Coverage. The testing,  marketing
and sale of human health care products entail an inherent risk of allegations of
product  liability and there can be no assurance that product  liability  claims
will not be asserted  against the Company,  its  collaborators or its licensees.
The Company  currently has only limited amounts of product  liability  insurance
for clinical trials and for commercial sales. There can be no assurance that the
Company will be able to maintain product liability insurance on acceptable terms
or that such  insurance  will provide  adequate  coverage  against any potential
claims.  Furthermore,  there  can be no  assurance  that any  collaborators  and
licensees  of Agouron  will agree to  indemnify  the  Company,  be  sufficiently
insured or have a  sufficient  net worth to protect the Company from any product
liability claims.

         Use of Hazardous  Materials.  The  Company's  research and  development
activities involve the controlled use of hazardous materials, chemicals, viruses
and various radioactive compounds. Although the Company believes that its safety
procedures  for  handling  and  disposing  of such  materials  comply  with  the
standards  prescribed by state and federal  regulations,  the risk of accidental
contamination or injury from these materials cannot be completely eliminated. In
the event of such an accident,  the Company could be held liable for any damages
that  result  and any  liability  could have a  material  adverse  effect on the
Company.

         Attraction  and  Retention  of  Personnel.  The  future  success of the
Company  will  depend in large part on its  ability to  continue  to attract and
retain  highly  qualified  scientific,   technical,   sales  and  marketing  and
managerial personnel. Competition for such personnel is intense and there can be
no assurance  that the Company will be able to attract and retain the  personnel
necessary for the development of its business. In addition, much of the know-how
developed by the Company  resides in its scientific and technical  personnel and
such  know-how is not readily  transferable  to other  scientific  and technical
personnel.  The loss of or  failure  to recruit  scientific,  technical,  sales,
marketing,  manufacturing and managerial personnel could have a material adverse
effect on the Company.



<PAGE>



                                     GENERAL

         This Proxy  Statement  and the enclosed  form of Proxy are furnished in
connection  with the  solicitation  of Proxies by and on behalf of the Board for
use at the Meeting to be held at the Sheraton  Grande Torrey Pines,  10950 North
Torrey Pines Road, La Jolla, California 92037, on Wednesday, October 28, 1998 at
10:00 a.m., San Diego time, and at any adjournments or postponements thereof.

         Any shareholder returning the enclosed Proxy may revoke it prior to its
exercise by voting in person at the Meeting or by filing with the  Secretary  of
the Company a written revocation or a duly executed Proxy bearing a later date.

         All shares  represented  by valid  Proxies will be voted in  accordance
with the  directions  specified  thereon and  otherwise in  accordance  with the
judgment of the  proxyholders.  Any duly executed Proxy on which no direction is
specified  will be voted FOR the  election of the  nominees  named herein to the
Board and FOR  Proposals  2, 3, 4 and 5  described  in the Notice of Meeting and
this Proxy Statement.

     Only  shareholders  of record as of the close of business on September  14,
1998  (the  "Record  Date")  will be  entitled  to vote  at the  Meeting.  As of
September 14,  1998,  there were  outstanding  _______ shares of Existing Common
Stock.

     Holders of Existing  Common Stock are entitled to one vote per share on all
matters brought before the Meeting and to cumulate votes for the election of the
nine directors.  Therefore,  in voting for directors,  each outstanding share of
Existing  Common  Stock is  entitled  to nine  votes  which  may be cast for one
candidate or distributed in any manner among the nominees for director. However,
the  right to  cumulate  votes in  favor  of one or more  candidates  may not be
exercised  until  the  candidate  or  candidates  have  been  nominated  and the
shareholder has given notice at the Meeting of the intention to cumulate votes.

     The persons  authorized to vote shares  represented by executed Proxies for
Existing  Common  Stock  in the  enclosed  form  (if  authority  to vote for the
election of directors is not withheld)  will have full  discretion and authority
to vote  cumulatively  and to allocate votes among any or all of the nominees as
they may  determine  or,  if  authority  to vote for a  specified  candidate  or
candidates had been withheld,  among those candidates for whom authority to vote
has not been withheld.

         The required  quorum for the Meeting shall consist of a majority of the
outstanding shares of Existing Common Stock which are entitled to vote in person
or by proxy at the  Meeting.  Assuming  that a quorum is present at the Meeting,
the nine persons  receiving  the highest  number of votes will be elected to the
Board.  The  approval  of  Proposal 2 will  require  the  affirmative  vote of a
majority of the outstanding  shares of Existing Common Stock.  Each of Proposals
3, 4 and 5 requires the affirmative  vote of a majority of the shares present in
person or represented by proxy at the Meeting, provided that those affirmatively
voted shares also constitute at least a majority of the required quorum.

         Abstentions with respect to any matter are treated as shares present or
represented  and thus have the same effect as negative  votes. If a broker which
is the record  holder of certain  shares  indicates  on a proxy that it does not
have  discretionary  authority to vote on a particular matter as to such shares,
or if shares are not voted in other  circumstances  in which proxy  authority is
defective  or has been  withheld  with  respect to a  particular  matter,  these
non-voted  shares will be counted for quorum  purposes  but are not deemed to be
present or represented for purposes of determining whether shareholder  approval
of that  matter has been  obtained  (however,  they will have the same effect as
negative votes with respect to Proposal 2 and may,  depending upon the number of
shares voted,  have the same effect as negative  votes with respect to Proposals
3, 4 and 5).

         The expense of printing and mailing Proxy material will be borne by the
Company. In addition to the solicitation of Proxies by mail, solicitation may be
made by  certain  directors,  officers  or other  employees  of the  Company  by
telephone, telegraph, facsimile or in person. No additional compensation will be
paid to such persons for such  solicitation.  However,  the Company will request
brokers, nominees, fiduciaries, custodians and others to forward Proxy materials
to the beneficial  owners of the Company's shares and the Company will reimburse
such  brokers  or other  persons  for their  reasonable  out-of-pocket  expenses
incurred in connection with forwarding such materials.  The Company has retained
D.F.  King & Co.,  Inc. to perform  various  proxy  advisory,  distribution  and
solicitation  services at a cost of approximately  $_____ plus  reimbursement of
out-of-pocket expenses.



<PAGE>



                       PROPOSAL 1 - ELECTION OF DIRECTORS

     Under the bylaws of the Company,  the number of directors is to be not less
than six nor more than eleven,  with the actual  number to be fixed from time to
time by  resolution  of the  Board.  The Board  has fixed at nine the  number of
directors to be elected at the 1998 Annual Meeting of Shareholders.

     Nine  directors  are to be elected at the Meeting,  each to serve until the
next Annual Meeting of Shareholders  and until their  respective  successors are
elected or appointed. Unless authority to vote for all directors is withheld, it
is intended that the shares  represented by the enclosed Proxy will be voted for
the election of the nominees named. In the event any of them shall become unable
or unwilling to accept  nomination or election,  the shares  represented  by the
enclosed  Proxy will be voted for the election of such other person as the Board
may  recommend in his or her place.  The Board has no reason to believe that any
such nominee will be unable or unwilling to serve.

     The nine nominees for election as directors, all of whom are members of the
present Board, are Peter Johnson, Gary E. Friedman, John N. Abelson, Patricia M.
Cloherty, A.E. Cohen, Michael E. Herman, Irving S. Johnson,  Antonie T. Knoppers
and Melvin I.  Simon.  Their  terms will last until the 1999  Annual  Meeting of
Shareholders.  Certain information  concerning the nominees for directors is set
forth below.  The Board recommends that you vote FOR the nominees for directors,
as set forth in Item 1 on the Proxy Card.

Nominees for Election as Directors

Name                               Age  Position
Peter Johnson                      53   President, Chief Executive Officer and
                                        Director
Gary E. Friedman                   51   Corporate Vice President,
                                        General Counsel, Secretary and Director
John N. Abelson, Ph.D.(1)          59   Director
Patricia M. Cloherty(2)            56   Director
A.E. Cohen(1)                      62   Director
Michael E. Herman(1)               57   Director
Irving S. Johnson, Ph.D.           73   Director
Antonie T. Knoppers, M.D.,Ph.D.(2) 83   Director
Melvin I. Simon, Ph.D.(2)          61   Director


(1)  Member of Directors Compensation Committee
(2)  Member of Audit Committee


     Peter  Johnson,  a founder of the Company,  has served as a director and as
president  and chief  executive  officer of the Company  since its  inception in
1984.  Through  1989,  Mr. Johnson  held  various  positions  with  The  Agouron
Institute,  including executive  director.  Mr. Johnson received a M.A. from the
University of California, San Diego.

     Gary E. Friedman,  a founder of the Company, has served as a director since
its  inception,  as the  secretary  of the  Company  since  May 1986 and as vice
president and general  counsel since December  1991. In June 1997, Mr.  Friedman
was promoted to corporate vice president.  Previously,  from 1982 until December
1991, Mr. Friedman was a principal of the law firm of Friedman,  Jay & Cramer, a
Professional  Corporation.  Mr. Friedman is a California Certified Specialist in
Taxation.  Mr.  Friedman  received a J.D. and a M.B.A.  from the  University  of
California, Berkeley and a L.L.M. in taxation from the University of San Diego.

     John N. Abelson,  a founder of the Company,  has served as a director since
its inception.  Dr. Abelson, a molecular biologist,  is a member of the National
Academy of Sciences. Since 1982, Dr. Abelson has been a member of the faculty of
the Division of Biology at the California  Institute of Technology  where,  from
October 1989 until June 1995, he served as chairman. Previously, Dr. Abelson was
a member of the faculty in the  Department  of  Chemistry at the  University  of
California, San Diego. Dr. Abelson received a Ph.D. in biophysics from The Johns
Hopkins University and was a postdoctoral  fellow at the Laboratory of Molecular
Biology in  Cambridge,  England.  Dr. Abelson  also  serves as a director of The
Agouron Institute.


<PAGE>




     Patricia  M.  Cloherty  joined  the Board in  December  1988.  Since  1970,
Ms. Cloherty  has been associated with Patricof & Co. Ventures,  Inc.  (formerly
Alan Patricof  Associates,  Inc.), a New York venture capital firm ("Patricof"),
and has been a general partner of its funds since 1973. From 1993 until 1997 she
was  president of  Patricof.  From 1997 to the  present,  Ms.  Cloherty has been
executive  co-chairman as well as a general  partner of Patricof.  Ms.  Cloherty
also served as deputy  administrator for the U.S. Small Business  Administration
in 1977 and 1978. Ms.  Cloherty also serves on the board of directors of several
private companies.

     A. E. Cohen  joined the Board in March 1992.  Mr.  Cohen is an  independent
management consultant. From 1957 until his retirement in January 1992, Mr. Cohen
held various positions at Merck & Co., Inc., including senior vice president and
president  of the Merck Sharp & Dohme  International  Division.  Currently,  Mr.
Cohen is the  chairman of the board of  Neurobiological  Technologies,  Inc. and
Vasomedical, Inc., and is a member of the board of directors of Akzo Nobel N.v.,
Teva   Pharmaceutical   Industries  Ltd.,  Smith  Barney  (Mutual  Funds),   and
Pharmaceutical Product Development, Inc., all of which are public companies. Mr.
Cohen also serves as trustee to The  Population  Council and is a consultant  to
Chugai Pharmaceutical Co. Ltd., Tokyo ("Chugai"),  and serves as chairman of the
board of Chugai's U.S. subsidiary  companies.  Mr. Cohen also is a member of the
board of directors of Lung Check, Inc.

     Michael E. Herman joined the Board in October 1992. Mr. Herman is a private
investor,  as well as president and chief  operating  officer of the Kansas City
Royals Baseball Team. From October 1974 until his retirement in 1990, Mr. Herman
held  various  positions  at  Marion  Laboratories,  Inc.  (now  Hoechst  Marion
Roussel),  including  executive  vice  president  and chief  financial  officer.
Currently,  Mr. Herman serves as chairman of the finance  committee of the Ewing
Marion Kauffman  Foundation,  a private foundation located in Kansas City where,
from 1985 through 1990, he was the president and chief  operating  officer.  Mr.
Herman is also a member  of the board of  directors  of  Cerner  Corporation,  a
public  company,  and  serves  on the  board of  directors  of  several  private
companies.

     Irving  S.  Johnson  joined  the  Board  in May  1989.  Dr.  Johnson  is an
independent  consultant in  biomedical  research  working with numerous  private
companies.  From 1953 until his  retirement in November 1988,  Dr. Johnson  held
various positions at Eli Lilly and Company, including vice president of research
from 1973 until  1988.  Dr. Johnson  also  served on several  committees  of the
National  Academy of  Sciences,  the  Office of  Technology  Assessment  and the
National  Institutes  of  Health.  Currently,  he is a  member  of the  board of
directors  of  Allelix   Biopharmaceuticals   Inc.  and  Ligand  Pharmaceuticals
Incorporated,  and is on the scientific advisory board of ELAN Corporation,  all
of which are public  companies.  Dr. Johnson  received a Ph.D. in  developmental
biology from the University of Kansas.

     Antonie  T.  Knoppers  joined the Board in July 1991.  Dr.  Knoppers  is an
independent  management  consultant.  From 1952  until his  retirement  in 1975,
Dr. Knoppers   held  various   positions  at  Merck  &  Co.,   Inc.,   including
vice chairman   of  the  board  and  president  and  chief  operating   officer.
Dr. Knoppers  is a member of the board of directors of Centocor,  Inc., a public
biotechnology  company. In addition, he is a former chairman of the U.S. Council
of the  International  Chamber of Commerce and a member of the advisory board of
PaineWebber Development Corporation,  an affiliate of PaineWebber  Incorporated.
Dr. Knoppers received a M.D. from the University of Amsterdam and a Ph.D.
from the University of Leiden, The Netherlands.

     Melvin I. Simon,  a founder of the Company,  has served as a director since
its inception.  Dr. Simon, a molecular  geneticist,  is a member of the National
Academy of Sciences. Currently, Dr. Simon is chairman of the Division of Biology
at the  California  Institute  of  Technology  where he has been a member of the
faculty  since 1982.  Previously,  Dr.  Simon was a member of the faculty in the
Department of Biology at the  University  of  California,  San Diego.  Dr. Simon
received a Ph.D. in biochemistry from Brandeis University. Dr. Simon also serves
as a director of The Agouron Institute.

Committees and Meetings of the Board

     The Company has a Directors  Compensation Committee and an Audit Committee.
The Company does not have a Nominating  Committee.  During the fiscal year ended
June 30, 1998, the Board held six meetings.

     During the fiscal year ended June 30, 1998,  members of the Audit Committee
consisted of Ms.  Cloherty,  Chairperson,  Dr. Knoppers and Dr. Simon. The Audit
Committee oversees the Company's  accounting and financial  reporting  policies,
makes  recommendations  to the Board  regarding the  appointment  of independent
accountants,  reviews with the independent accountants the accounting principles
and  practices  followed by the Company and the adequacy  thereof,  approves the
Company's  annual  audit  and  financial  results  and any  material  change  in
accounting principles,  policies and procedures and makes recommendations to the
Board with regard to any of the preceding. The Audit Committee held two meetings
in the fiscal year ended June 30, 1998.


<PAGE>




     During  the  fiscal  year ended  June 30,  1998,  members of the  Directors
Compensation  Committee consisted of Mr.EHerman,  Chairman, Dr. Abelson, and Mr.
Cohen.  The  Directors  Compensation  Committee  recommends  to  the  Board  the
Company's overall compensation and the individual  compensation elements for the
Company's executive officers and directors. The Directors Compensation Committee
does not approve  grants of stock  options to executive  officers and  directors
under the Company's  stock option plans.  The Directors  Compensation  Committee
held two meetings in the fiscal year ended  June 30,  1998.  During fiscal 1998,
the full Board was  responsible  for  approving  grants of options to  executive
officers and directors.

     No incumbent director attended fewer than 75% of the aggregate of the Board
and Committee meetings in which such director was entitled to participate.



<PAGE>
                   PROPOSAL 2 - THE DIVISIONAL STOCK PROPOSAL

General

         The shareholders of the Company are being asked to consider and approve
the Divisional  Stock Proposal  which,  if approved,  will amend and restate the
Company's  Articles  of  Incorporation  to  increase  the  number  of  shares of
authorized Common Stock to 150,000,000  shares, of which 75,000,000 shares would
initially be designated as Agouron  Pharmaceuticals  Stock and 25,000,000 shares
would  initially be designated  as Oncology  Division  Common Stock,  to provide
authorization to the Board to designate and issue any undesignated shares in one
or more additional series of Common Stock and to determine the number of shares,
rights, preferences, privileges and restrictions of any such series, to increase
or decrease the number of shares of any existing  series  including  the Agouron
Pharmaceuticals Stock and the Oncology Division Stock, and to convert each share
of the Company's existing Common Stock into one share of Agouron Pharmaceuticals
Stock and ___ share of Oncology Division Stock.

     The  reclassification  and  conversion  of the  Existing  Common Stock into
Agouron    Pharmaceuticals    Stock   and   Oncology    Division    Stock   (the
"Reclassification")  are intended for United States  federal income tax purposes
to be tax free to both the Company and its  shareholders  except with respect to
cash paid in lieu of  fractional  shares.  See  "--Certain  Federal  Income  Tax
Considerations."

         The ratio of ___ share of  Oncology  Division  Stock for each  share of
Existing  Common  Stock  was  determined  by  the  Board  in  consultation  with
PaineWebber,  the Company's  financial advisor in connection with the Divisional
Stock  Proposal,  and is based upon the estimated  relative  market value of the
Oncology  Division,  as determined by PaineWebber and the Board, and the desired
initial trading range of the Oncology  Division  Stock.  The market value of the
Oncology  Division was based on  prevailing  market  conditions,  financial  and
operating  information  of the  Oncology  Division,  and the  market  prices  of
securities and certain financial and operating  information of companies engaged
in activities similar to those of the Oncology Division.

         IF THE DIVISIONAL  STOCK PROPOSAL IS NOT APPROVED BY THE  SHAREHOLDERS,
THE ONCOLOGY  DIVISION STOCK WILL NOT BE CREATED,  AND THE EXISTING COMMON STOCK
WILL NOT BE RECLASSIFIED  AND CONVERTED INTO AGOURON  PHARMACEUTICALS  STOCK AND
ONCOLOGY DIVISION STOCK.

         If the Divisional Stock Proposal is approved by the shareholders at the
Annual Meeting,  the Company  anticipates that the Restated  Articles (see Annex
II) will be filed with the  California  Secretary of State  shortly  thereafter.
However,  the Board could choose to effect the Divisional  Stock Proposal at any
time thereafter, or not to effect the Divisional Stock Proposal depending on the
circumstances  at the time.  The Restated  Articles will become  effective  upon
filing  with  the  California   Secretary  of  State  (the  "Effective   Date").
Certificates formerly representing shares of Existing Common Stock that are held
by shareholders will be deemed to represent an equal number of shares of Agouron
Pharmaceuticals   Stock.  New  certificates   representing   shares  of  Agouron
Pharmaceuticals  Stock will be issued in  replacement of  certificates  formerly
representing  shares of Existing Common Stock as such  certificates are received
and canceled by the transfer agent.  Shareholders should not mail in their stock
certificates  evidencing  Existing  Common  Stock to either  the  Company or its
transfer agent in connection with the Divisional  Stock  Proposal.  Certificates
representing  Oncology  Division  Stock  will  be  distributed  as  promptly  as
practicable  thereafter.  At any time prior to filing the Restated Articles with
the California Secretary of State,  including after adoption by the shareholders
of the Company, the Board may abandon the Divisional Stock Proposal, or any part
thereof, without further action by the shareholders.

         Fractional  shares of  Oncology  Division  Stock  will not be issued in
connection with the Reclassification.  If more than one share of Existing Common
Stock is held by the same  holder of record,  the  Company  will  aggregate  the
number of shares of Oncology  Division  Stock  issuable to such holder upon such
distribution  (including  any  fractions of shares).  If the number of shares of
Oncology  Division  Stock  calculated  to be issued  to any  holder of record of
Existing Common Stock includes a fraction of a whole share, the Company will pay
to such record holder the cash value of such fractional  share within 60 trading
days of the Effective Date,  based upon the average of the daily average of high
and low prices of the Oncology  Division Stock on the Nasdaq National Market for
each of the first ten trading days  following the Effective  Date.  Shareholders
who own their stock  beneficially  through  brokers or other nominees  listed as
holders of record will have their  fractional  shares  handled  according to the
practices  of such  broker or  nominee,  which may  result in such  shareholders
receiving  a price that is higher or lower than the price paid by the Company to
holders of record.  If the necessary trading of Oncology Division Stock does not
occur within 20 trading days after the Effective Date, the Board

<PAGE>



will  determine  the cash value of a share of  Oncology  Division  Stock and the
amount to be paid in lieu of fractional shares.

         The  authorized  but  unissued  shares  of the  two new  series  of the
Company's  Common  Stock and the  undesignated  shares of Common  Stock  will be
available for issuance from time to time by the Company at the discretion of the
Board for any proper  corporate  purpose,  which could include raising  capital,
payment of stock dividends,  providing  compensation or benefits to employees or
acquiring  companies or  businesses.  Such Common Stock would  provide the Board
with a means to complete  acquisitions  or to further  divide the  Company  into
additional  divisions,  through the creation of separate series of Common Stock.
In addition, the Board could use undesignated shares of Common Stock to increase
or  decrease  the  number  of  shares of an  existing  series  of Common  Stock,
including  Agouron  Pharmaceuticals  Stock and Oncology  Division Stock, but not
below the number of  outstanding  shares of that  series.  The  issuance of such
additional shares or series would not be subject to approval by the shareholders
of the Company  unless  deemed  advisable by the Board or required by applicable
law,  regulation  or the  listing  requirements  of the  stock  market  or stock
exchange upon which the Company's shares are listed.

Background Of And Reasons For The Divisional Stock Proposal

         The  Divisional  Stock Proposal has been approved by the Board with the
goal of  creating  flexibility  for the  future  growth of the  Company,  and to
advance the Company's  financial and strategic  objectives,  all in an effort to
enhance the overall return to the holders of Existing Common Stock.

         If Agouron  shareholders  approve the Divisional  Stock  Proposal,  the
resulting  amendments to the Company's Articles of Incorporation will create two
series of Common Stock of the Company,  namely the Agouron Pharmaceuticals Stock
and the Oncology Division Stock, each having the rights and privileges described
elsewhere in this Proxy  Statement.  The  Divisional  Stock  Proposal  will also
authorize  the Board to issue in one or more  additional  or existing  series of
Common Stock with each new series having the rights, preferences, privileges and
restrictions  determined by the Board before the issuances of any shares of such
series. See "- Description of Capital Stock" and Annex II.

         The Oncology  Division Stock is intended to reflect the value and track
the performance of the Oncology  Division.  Through the Oncology  Division,  the
Company  seeks to create a  focused,  integrated  oncology  business  which will
develop and  commercialize  novel  products  for the  diagnosis,  treatment  and
prevention of cancer.  The Oncology Division will, on its own and in combination
with  partners  and with Agouron  Pharmaceuticals  (when  appropriate)  develop,
manufacture and market those oncology related products.

         The Board  reviewed in detail the financial  performance of the Company
since the FDA  approved  the sale of VIRACEPT  in March  1997.  Since that date,
revenues  from  VIRACEPT  sales have grown  steadily,  allowing  the  Company to
continue its vigorous  investment  in research and  development  ("R&D") for new
products. Such R&D expenditures in non-VIRACEPT related programs,  however, have
impacted  and  are  expected  to  continue  to  impact  the  overall   financial
performance of the Company and overall shareholder return.

         Approximately  25% of the Company's total  anticipated R&D expenditures
during the  Company's  1999 fiscal year are  expected to be incurred in oncology
related programs.  Currently the Company has four clinical  development programs
and four  preclinical  research and development  programs in the oncology field.
The Board  believes that tracking the oncology  operations  separately  from the
rest of the  Company  will help the Company  realize  what it believes to be the
unappreciated value of the Company's R&D pipeline of products for oncology while
at the same time reducing the impact of those R&D  expenditures on the financial
results of the Company's VIRACEPT-driven non-oncology business.

         In addition to its review of the financial  performance of the Company,
the Board considered the Company's present organizational structure,  which does
not completely  recognize and resolve the inherent conflict between a profitable
business and a business  division still in the development  stage. For these and
other  reasons,  management  engaged  PaineWebber  to discuss  with the  Company
various  alternatives  designed  to  achieve  greater  overall  value  in  these
respective   businesses.   PaineWebber   advised  that  the  separation  of  the
development  stage  oncology  division  from the  VIRACEPT  driven  non-oncology
business,  and the  creation of two  classes or series of Common  Stock to track
those  divisions,   should  result  in  the  market  separately  evaluating  the
performances of Agouron Pharmaceuticals and the Oncology Division.


<PAGE>




         At  meetings  held on February  12, 1998 and August 6, 1998,  the Board
considered a variety of  structural  proposals to increase the overall  value of
the Existing Common Stock to its shareholders.  The Board evaluated alternatives
available  to  the  Company  in  view  of  its  strategic  objectives,   capital
requirements,  past  financial  results and other  factors.  They had  extensive
discussions  with senior  financial and legal officers of the Company as well as
representatives   of  PaineWebber.   Among  the  alternatives  which  the  Board
considered  were  (i) the  preservation  of the  Company's  current  equity  and
operating structure;  (ii) the separation of various of the Company's businesses
through a distribution  (for example,  in a spin-off) of certain programs to the
Company's  shareholders or the creation of special purpose  financing  entities;
(iii) the license to third parties of certain of the Company's  technology;  and
(iv) the creating of two classes or series of Common Stock to reflect separately
the results of the  Company's  profitable  anti-viral  related  business and its
development stage oncology division.

         The Board  determined that the license to third parties of the oncology
assets or other technology would not realize the full value of those development
stage  programs.  The Board also determined that a spin-off to shareholders of a
separate   company  owning  the  Company's  other   technologies   could  create
significant  tax, credit and control  issues.  Following  deliberation  over and
consideration of the advantages and  disadvantages of the various  alternatives,
the Board concluded that the Divisional  Stock Proposal was the best alternative
for the Company and its shareholders.

         The Board's  adoption of the  Divisional  Stock Proposal is part of its
ongoing effort to increase the long-term value of the Company.

         In reaching its conclusion,  the Board  identified the following as the
advantages of the Divisional Stock Proposal:

         o        The  creation  of two series of Common  Stock  intended  to
                  reflect  separately  the  performance  of  Agouron
                  Pharmaceuticals  and the Oncology  Division offers the
                  opportunity to increase  shareholder value by more
                  specifically  tracking the financial  performance  of each
                  Division.  Separate  equity securities  could  enable
                  investors  to gain a better  understanding  of the  businesses
                  of Agouron Pharmaceuticals  and the  Oncology  Division  and
                  allow  shareholders  to  invest  in either or both
                  securities  depending  on their  investment  objectives.  The
                  separate  reporting of each  Division's  results  would create
                  a framework  for increased  and more focused  equity  research
                  coverage by the investment  community and would separate the
                  Oncology Division  operating results from the results of
                  operations of Agouron Pharmaceuticals.

         o        The  Divisional  Stock  Proposal  will  provide  financial
                  and  strategic  flexibility  for  Agouron Pharmaceuticals  and
                  the Oncology Division to raise capital and to engage in
                  acquisitions,  strategic investments,  and  other
                  transactions  affecting  either  Agouron  Pharmaceuticals  or
                  the  Oncology  Division  as a result of the  availability  of
                  two  different  equity  securities  for  issuance.  In
                  particular,  development,  clinical testing and
                  commercialization of the Oncology Division's products
                  will require  substantial  funds. A separate  equity  security
                  for the Oncology  Division is expected to allow the Company to
                  raise capital through  offerings of Oncology  Division Stock
                  without diluting the interests of holders of Agouron
                  Pharmaceuticals Stock.

         o        Creating  separate  series of Common  Stock,  each of which is
                  designed  to  reflect  the  operating  results  of a  distinct
                  division,   increases  the  Company's  ability  to  focus  the
                  management  of the  respective  Divisions  on  maximizing  the
                  returns from such  businesses and provides the  opportunity to
                  structure  incentives  for employees that are tied directly to
                  the  business  results  and share  price  performance  of that
                  Division.

         o        The  Divisional  Stock  Proposal will retain for the Company
                  the  advantages  of doing  business as a  single company.
                  Specifically,  the Company will retain ownership of all of its
                  technologies,  which the Board  considers to be a  significant
                  long-term  strategic  benefit given what it believes to be
                  the  potential of the products  under  development.  Further,
                  as part of one company,  each Division will be in a position
                  to benefit  from cost  savings  and  synergies  with the other
                  compared to the costs  each  Division  would  incur  if  it
                  operated   separately.   These  include  management  and
                  administrative  synergys,  a lower  overall  borrowing  cost
                  as a result of the credit  rating of the combined  Company and
                  potential  federal,  state and local tax benefits  that may be
                  greater for the combined Company than for the two Divisions
                  operating separately.


<PAGE>




         o        The  ability  of the  Board to create  one or more  additional
                  series of Common  Stock or to increase or decrease  the number
                  of  shares  in  existing  series  without  the need to  obtain
                  shareholder   approval   at  the  time  of  creation  of  each
                  additional  series would provide the Board with a means to act
                  quickly and definitively in future  acquisitions or to further
                  divide the Common Stock of the Company into additional series.

         o        Implementation  of the  Divisional  Stock  Proposal  is
                  intended  to be tax free for  United  States federal income
                  tax purposes to the Company and its  shareholders  except with
                  respect to cash paid in lieu of fractional shares.   See
                  "--Certain Federal Income Tax Considerations."

         o        By permitting the Board to redeem the Oncology  Division Stock
                  under certain conditions, the Board retains the flexibility to
                  consider possible future restructuring options.


         The Board also considered the following potential  disadvantages of the
Divisional Stock Proposal:

         o        The  Divisional  Stock  Proposal  requires  a complex  capital
                  structure  which may not be  well-understood  by investors and
                  thus could inhibit the  efficient  valuation of either or both
                  series of Common Stock.

         o        There is limited  experience with the use of divisional  stock
                  in  companies  having  a  business  unit  with an  established
                  history  of  earnings  and  another   business   unit  in  the
                  development stage.

         o        There are  potential  diverging or  conflicting  interests of
                  the two Divisions and issues that could arise  in  resolving
                  any  conflicts.   See   "--Management   and  Allocation
                  Policies"  and  "Risk Factors--Potential Divergence of
                  Interests; No Specific Procedures for Resolution."

         o        Investors   in  the   Oncology   Division   Stock  or  Agouron
                  Pharmaceuticals  Stock  will be  exposed  to the  risks of the
                  Company's consolidated businesses and liabilities such as tort
                  or product  liability claims and shareholder  lawsuits because
                  both Divisions remain legally a part of the Company. See "Risk
                  Factors--Risks  Related to the  Divisional  Stock  Proposal --
                  Shareholders of One Company; Financial Effects of One Division
                  Could Adversely  Affect the Other Division" and  "--Management
                  and Allocation Policies."

         o        Divisional  Stock will create a possible  inability to use the
                  pooling  method  of  accounting  in  connection   with  future
                  acquisitions using Agouron  Pharmaceuticals  Stock or Oncology
                  Division  Stock,  and  the  possible  inability  or  increased
                  difficulty  of  receiving a ruling from the  Internal  Revenue
                  Service  in  connection  with  a  proposed  acquisition  to be
                  effected  using  either  Oncology  Division  Stock or  Agouron
                  Pharmaceuticals Stock.

         o        The costs  associated with  implementing  the Divisional Stock
                  Proposal and the ongoing cost of operating  separate Divisions
                  will exceed the costs associated with operating the Company as
                  it currently exists.

         The Board  determined  that on balance the potential  advantages of the
Divisional  Stock Proposal  outweigh the potential  disadvantages  and concluded
that the  Divisional  Stock Proposal is in the best interests of the Company and
its shareholders.

Vote Required

         The Divisional  Stock  Proposal  requires the  affirmative  vote of the
holders of a majority of the outstanding shares of Existing Common Stock.

Recommendation Of The Board

     THE BOARD HAS  CAREFULLY  CONSIDERED  THE  DIVISIONAL  STOCK  PROPOSAL  AND
BELIEVES THAT ITS APPROVAL BY THE  SHAREHOLDERS  IS IN THE BEST INTERESTS OF THE
COMPANY AND THE SHAREHOLDERS. ACCORDINGLY, THE BOARD UNANIMOUSLY RECOMMENDS THAT
THE SHAREHOLDERS APPROVE THE DIVISIONAL STOCK PROPOSAL.


<PAGE>



Management and Allocation Policies

         Because Agouron  Pharmaceuticals and the Oncology Division will each be
a part of a single company, the Board and management have carefully considered a
number of  issues  with  respect  to  intracompany  business  transactions,  the
financing  of  Agouron  Pharmaceuticals  and  the  Oncology  Division,  and  the
allocation  of debt,  corporate  overhead,  interest,  taxes and  other  charges
between the two Divisions. The Board and management have established policies to
accomplish the fundamental objective of the Divisional Stock Proposal,  which is
to separate the business and  operations of the Oncology  Division from those of
Agouron  Pharmaceuticals,  to operate the  Oncology  Division  on a  stand-alone
basis,  and to  allocate  costs and  charges  between  the two  Divisions  on an
objective basis.

         Except as  otherwise  provided in the  policies,  the Board may further
modify or rescind the policies in its sole  discretion  without  approval of the
shareholders,  subject  only to the  Board's  fiduciary  duty  to the  Company's
shareholders. The Board has no present plans to change any of such policies. The
Board may also adopt additional  policies depending upon the circumstances.  Any
determination  of the Board to  modify  or  rescind  the  policies,  or to adopt
additional  policies,  including  any such  decision  that would have  disparate
impacts upon holders of the Common Stock  representing the two Divisions,  would
be governed by the  principles of California  law discussed  under "Risk Factors
Risks Related to the  Divisional  Stock  Proposal -- Management  and  Allocation
Policies Subject to Change."  However,  the Board will make any such decision in
accordance  with its good faith  business  judgment of the best interests of the
Company. In addition,  generally accepted accounting principles require that any
change in policy be  preferable  (in  accordance  with such  principles)  to the
previous policy.

         Financial  Statements,  Allocation  Matters.  The Company  will prepare
financial statements in accordance with generally accepted accounting principles
for Agouron  Pharmaceuticals  and the  Oncology  Division,  and these  financial
statements,  taken together,  will comprise all of the accounts  included in the
corresponding  consolidated  financial  statements of the Company. The financial
statements  of each of Agouron  Pharmaceuticals  and the Oncology  Division will
reflect the financial  condition,  results of  operations  and cash flows of the
businesses included therein. The financial statements of Agouron Pharmaceuticals
will  also  include  any  accounts  or assets of the  Company  not  specifically
allocated to the Oncology Division.

         Division  financial  statements may include  allocated  portions of the
Company's debt,  interest,  corporate overhead and taxes.  Notwithstanding  such
allocations,  for the purpose of preparing each Division's financial statements,
holders  of  Agouron  Pharmaceuticals  Stock and  Oncology  Division  Stock will
continue to be subject to all of the risks  associated with an investment in the
Company  and  all  of  its  businesses,   assets  and  liabilities.   See  Annex
IV--"Agouron   Pharmaceuticals  --  Financial  Statements,"  Annex  V--"Oncology
Division--Financial  Statements"  and  "Risk  Factors  -  Risks  Related  to the
Divisional Stock Proposal -- Shareholders of One Company;  Financial  Effects on
One Division Could Affect the Other."

         Debt  Financing.  Each Division's debt will increase or decrease by the
amount  of any net cash  generated  by,  or  required  to fund,  the  Division's
operating activities,  dividend payments,  share repurchases and other financing
activities.  Interest  will be charged to each  Division  based on the amount of
such  Division's  debt.  Changes  in the  cost  of the  Company's  debt  will be
reflected in adjustments in the weighted average interest cost of such debt.

     Funding  for  the  Oncology  Division.  The  development  of  the  Oncology
Division's  products will require  substantial funds. See "Risk Factors -- Risks
Related  to  Agouron   Pharmaceuticals  and  the  Oncology  Division  Additional
Financing Requirements and Access to Capital." Agouron  Pharmaceuticals  intends
to  fund  the  operations  of  the  Oncology  Division  as  necessary.   Agouron
Pharmaceuticals  may raise  funds  for the  Oncology  Division  through a public
offering of shares of the Oncology Division Stock as market  conditions  permit.
The Board has approved the  allocation of up to $25 million in cash from Agouron
Pharmaceuticals  to the Oncology Division (the "Equity Line").  Amounts drawn on
the Equity Line will be exchanged automatically for Oncology Division Designated
Shares at such time as the  maximum  amount of the Equity  Line is reached or as
the Board otherwise determines.

         The Equity Line will be reviewed  annually for extension or termination
on or before June 30 of each  calendar  year. If  terminated,  all amounts drawn
under the Equity Line as of such  termination date will be repaid in cash or, at
the option of the Board,  will be  exchanged  for Oncology  Division  Designated
Shares in the manner  described  below.  Upon  exchange  for  Oncology  Division
Designated Shares, the Equity Line will be re-established.



<PAGE>



         The number of Oncology  Division  Designated Shares to be exchanged for
amounts drawn under the Equity Line will be determined by dividing the amount of
the accumulated  Equity Line advances on the date of exchange by the Fair Market
Value of the  Oncology  Division  Common  Stock.  The Fair  Market  Value of the
Oncology  Division Stock will equal the average of the daily average of high and
low prices of the Oncology  Division Stock of the 20 trading days  commencing on
the 30th trading day immediately prior to the exchange date.

         Any   amounts   advanced   under  the  Equity   Line  (or  the  general
inter-division  advances) may be repaid in total or in part at any time prior to
their  conversion  to the Equity Line or their  exchange for  Oncology  Division
Designated Shares.

         Revenue  Allocation.  Other than revenues  received in connection  with
transactions  subject  to  the  policy  regarding  Interdivision   Transactions,
revenues from the sale of a Division's  products and services  shall be credited
to that Division.

         Expense  Allocation.  Other than expenses  incurred in connection  with
transactions  subject to the policy regarding  Interdivision  Transactions,  all
direct  expenses  shall be charged to the Division for the benefit of which they
are incurred.  Indirect costs will be allocated to each Division in a reasonable
and  consistent  manner based on  utilization by the Division of the services to
which such costs relate.

         Corporate  Overhead.  A portion of the  Company's  shared  general  and
administrative expenses (such as executive management,  human resources,  legal,
accounting and auditing, tax, treasury, strategic planning,  information systems
support,   and   environmental   services)   will  be   allocated   to   Agouron
Pharmaceuticals and the Oncology Division based upon specific  identification of
such services used by such Division. Where determinations based on use alone are
impracticable,  other methods and criteria will be used that management believes
are equitable and provide a reasonable  estimate of the cost attributable to the
Divisions.

         Tax Allocations. Income taxes shall be allocated to each Division based
upon the financial statement income,  taxable income,  credits and other amounts
properly  allocable  to  such  Division  under  generally  accepted   accounting
principles as if each Division were a separate taxpayer; provided, however, that
as of the end of any fiscal quarter of the Company, any tax benefit attributable
to any Division that cannot be utilized by such Division to offset or reduce its
current or deferred  income tax expense may be  allocated  to the  Divisions  in
proportion  to  their  taxable  income  without  any  compensating   payment  or
allocation.  The federal income taxes of the Company and the subsidiaries  which
own assets  allocated  between the  Divisions are  determined on a  consolidated
basis.  Consolidated  federal  income tax provisions and related tax payments or
refunds will be allocated between the Divisions based principally on the taxable
income and tax credits directly attributable to each Division.  Such allocations
will  reflect  each  Division's  contribution  (positive  or  negative)  to  the
Company's  consolidated  federal taxable income and the consolidated federal tax
liability and tax credit position. Had the Divisions filed separate tax returns,
the provision  for income taxes and net income for each  Division  (prior to tax
allocations  from other  divisions)  would not have  differed  from the  amounts
reported  in the  Divisions'  statements  of income for the years ended June 30,
1998,  1997 and 1996.  However,  the amounts of current and  deferred  taxes and
taxes  payable or  refundable  allocated  to each  Division in these  historical
financial  statements  may differ from those that would have been  allocated  to
each Division had they filed separate income tax returns.

         Depending on the tax laws of the  respective  jurisdictions,  state and
local income taxes are calculated on either a consolidated  or combined basis or
on a separate  corporation  basis.  State income tax  provisions and related tax
payments or refunds  determined  on a  consolidated  or  combined  basis will be
allocated between the Divisions based on their respective  contributions to such
consolidated  or combined  state  taxable  incomes.  State and local  income tax
provisions  and  related  tax  payments  which  are  determined  on  a  separate
corporation  basis will be allocated  between the Divisions in a manner designed
to reflect the respective  contributions  of the Divisions to the  corporation's
separate state or local taxable income.

         Acquisition of Programs,  Products or Assets.  Upon the  acquisition by
the Company from a third party of any programs,  products or assets  (whether by
acquisition  of  assets or  stock,  merger,  consolidation  or  otherwise),  the
aggregate cost of the acquisition and the programs,  products or assets acquired
shall be allocated  among the Divisions of the Company.  In the case of material
acquisitions,  such allocation shall be made in a manner determined by the Board
to be fair and  reasonable  to each  Division and to holders of the Common Stock
representing  each  Division,  taking into account such matters as the Board and
its financial  advisors,  if any, deem relevant.  Any such  determination by the
Board will be final and binding on all holders of Common Stock.


<PAGE>




         Disposition of Programs,  Products or Assets.  Upon any sale, transfer,
assignment or other disposition by the Company of any product,  program or asset
not  consisting  of all or  substantially  all of the assets of a division,  all
proceeds from such  disposition  shall be allocated to the Division to which the
program,  product or asset had been allocated. If the program,  product or asset
was allocated to more than one Division,  the proceeds of the disposition  shall
be allocated  among such Divisions based on their  respective  interests in such
program,  product or asset. Such allocation shall be made in a manner determined
by the Board to be fair and  reasonable  to such  Division and to holders of the
Common Stock representing such Division, taking into account such matters as the
Board and its financial advisors, if any, deem relevant.  Any such determination
by the Board will be final and binding on the holders of Common Stock.

         Interdivision Asset Transfers.  The Board may at any time and from time
to time reallocate any program,  product or other asset from one Division to any
other  Division.  All such  reallocations  shall be done at fair market value as
determined by the Board. Such determination shall take into account, in the case
of a program under  development,  the commercial  potential and the phase of the
clinical development of such program, the expenses associated with realizing any
income from such program (and the likelihood and timing of any such realization)
and other  matters  that the  Board and its  financial  advisors,  if any,  deem
relevant. The consideration for such reallocation may be paid by one Division to
another in cash or other  consideration  with a value  equal to the fair  market
value of the  assets  being  reallocated  or, in the case of a  reallocation  of
assets from  Agouron  Pharmaceuticals  to the Oncology  Division,  the Board may
elect to account for such  reallocation as an increase in the Oncology  Division
Designated Shares.

         Notwithstanding  the foregoing,  no Key Oncology Division  Program,  as
defined below, will be transferred out of the Oncology Division. A "Key Oncology
Division  Program" is any of the following:  (i) AG3340;  or (ii) any additional
oncology  program or product being  developed  from time to time in the Oncology
Division  which (a)  constituted  20% or more of the  research  and  development
budget of the Oncology Division in any one of the three most recently  completed
fiscal  years,  or (b) has had a cumulative  investment of $8 million or more in
research and development expenses by the Oncology Division.

         Commercialization  of  Oncology  Products.  The  Board  has  determined
certain allocations of rights concerning development-stage oncology products for
which development and registration  will be completed by the Oncology  Division.
Agouron  Pharmaceuticals  shall  have  the  world-wide  right  to  commercialize
oncology indications of AG3340,  AG3433 (or a substituted  product),  AG2034 and
AG2037 if successfully  developed and registered by the Oncology  Division.  The
Oncology  Division shall have the exclusive,  worldwide,  royalty-free  right to
develop  and   commercialize   for  oncology   indications  any  other  products
discovered,  acquired  and/or  developed  by the  Oncology  Division  or Agouron
Pharmaceuticals.  Agouron  Pharmaceuticals shall have the exclusive,  worldwide,
royalty-free right to develop and commercialize for non-oncology indications any
product discovered, acquired and/or developed by the Oncology Division.

         The Oncology  Division  may elect to  co-promote  AG3340,  AG3433 (or a
substituted  product),  AG2034  and/or  AG2037 in the  United  States and Canada
through a specialty  oncology  sales and marketing  organization  by agreeing to
provide up to fifty percent of the total sales and marketing effort with respect
to the  applicable  product in the United  States and  Canada.  If the  Oncology
Division  elects to co-promote a product,  it shall be entitled to share in that
percentage  of profits  from the sale of such  product in the United  States and
Canada which  corresponds  to the  percentage  of the total sales and  marketing
efforts for such product  contributed by the Oncology  Division.  Profits in the
United  States and Canada  shall be  computed by  deducting  from net sales of a
product  amounts  representing  the  applicable  cost of goods  sold,  and other
allowable   expenses.   Notwithstanding  the  Oncology  Division's  election  to
co-promote  a product and to share in profits  from such product and in order to
provide  the  Oncology   Division  with  an  adequate  minimum  return  for  its
development and registration  efforts for a product, the Oncology Division shall
be entitled to receive the  greater  of: (i) the  Oncology  Division's  share of
profits from the net sales of such product in the United  States and Canada plus
royalties based upon Agouron  Pharmaceuticals' net sales of such product outside
of the  United  States  and  Canada  according  to the  schedule  below  or (ii)
royalties  based  upon  Agouron  Pharmaceuticals'  worldwide  net  sales of such
product according to the schedule below:

   AG3340:  16% of first $150 million of net sales; 18% of net sales
          above $150 million
   AG3433 (or a substituted product):  18% of first $150 million of net sales;
          0% of net sales above $150 million
   AG2034: 17% of first $150 million of net sales; 19% of net sales
          above $150 million
   AG2037: 18% of first $150 million of net sales; 20% of net sales
          above $150 million


<PAGE>




         Agouron  Pharmaceuticals  and the  Oncology  Division  shall also share
equitably in any license  fees and/or  royalties  received  from any third party
licensees of AG3340, AG3433 (or a substituted product), AG2034 or AG2037.

         If Agouron  Pharmaceuticals  is  obligated  to pay  royalties  or other
payments to a third party to settle any infringement claim or action arising out
of the development and  commercialization  of a product,  then, fifty percent of
the royalties and other payments paid by Agouron  Pharmaceuticals  to such third
parties to settle such infringement  claim or action shall be creditable against
royalty or other payment  obligations  payable to the Oncology  Division on such
product;  provided,  however,  that in no case  shall  the  royalties  and other
payments due to the Oncology  Division in a quarterly  period be reduced by more
than fifty percent of the amounts  otherwise due in such quarterly  period.  Any
remaining  creditable  amount  may be used in  subsequent  quarterly  periods to
offset royalties and other payments due the Oncology Division. Additionally, the
royalty  rates that would  otherwise  apply for a quarterly  period in a country
shall be reduced by fifty  percent in such  country if no valid  Agouron  patent
claims  exist,  or if the  parties  mutually  agree that it is not  commercially
reasonable to pursue third-party infringers;  royalty rates that would otherwise
apply for a quarterly period may also be adjusted in certain other circumstances
as determined by the Board.

         Other Interdivision Transactions. This policy shall cover Interdivision
transactions  other than asset  transfers,  which shall be subject to the policy
regarding  Interdivision  Asset  Transfers.  From time to time,  a Division  may
engage in  transactions  directly  with the other  Divisions or jointly with the
other  Divisions and one or more third parties.  Such  transactions  may include
agreements by one Division to provide products and services for use by the other
Division and joint ventures or other collaborative  arrangements  involving more
than one Division to develop new  products  and services  jointly and with third
parties. Such transactions shall be subject to the following conditions:

         (i)  Research  and/or  development  performed  by one  Division for the
              benefit of another  Division  will be charged to the  Division for
              which work is  performed  on a cost  basis.  Such  costs  shall be
              allocated   in  the  manner   described   above   under   "Expense
              Allocation",  and the Division  performing  the research  will not
              recognize revenue as a result of performing such research.

         (ii) Corporate and general and administrative services will be provided
              by each Division to the other Division(s) requesting such services
              on a cost basis and such costs  shall be  allocated  in the manner
              described above under "Expense Allocation."

         (iii)Other than  research,  corporate  and general  and  administrative
              services,   Interdivision  transactions  shall  be  on  terms  and
              conditions that would be obtainable in transactions  negotiated at
              arm's length with unaffiliated third parties.

         (iv) Any  Interdivision  transaction  (a) to be  performed on terms and
              conditions   that   deviate   from  the   policies  set  forth  in
              subparagraphs (i), (ii) or (iii) above and (b) that is material to
              the other  participating  Divisions  will require  approval by the
              Board,  which approval shall include a determination  by the Board
              that the transaction is fair and reasonable to such  participating
              Division  and to  holders of the Common  Stock  representing  such
              Division.

         (v)  If a Division (the  "Purchasing  Division")  requires any product
              or service from which another Division (the  "Selling  Division")
              derives  revenues  from  sales to third  parties  (a  "Commercial
              Product or Service"),  the  Purchasing  Division  may  solicit
              from the  Selling  Division  a bid to  provide  such  Commercial
              Product or Service in addition to any bids  solicited by the
              Purchasing  Division from third parties.  Unless the Board
              determines that the bid of the Selling Division is fair and
              reasonable to the Selling and Purchasing Divisions and to holders
              of Common Stock  representing  the Selling and Purchasing
              Divisions and that the  Purchasing  Division  must  accept the
              Selling  Division's  bid,  the  Purchasing Division may accept any
              bid deemed to offer the most  favorable  terms and  conditions
              for providing the Commercial Product or Service sought by the
              Purchasing Division.

         (vi) Loans may be made from time to time  between  the  Divisions.  Any
              such loan of $1 million or less will  mature  within 18 months and
              interest will accrue at the best  borrowing  rate available to the
              Company for a loan of like type and duration.  Amounts borrowed in
              excess of $1 million  will  require  approval of the Board,  which
              approval  shall  include a  determination  by the  Board  that the
              material  terms of such  loan,  including  the  interest  rate and
              maturity  date,  are fair  and  reasonable  to each  participating
              Division and to holders of the Common Stock representing each such
              Division.  Any such loans made by Agouron  Pharmaceuticals  to the
              Oncology  Division  may be in  addition  to or in lieu of  amounts
              available under the Equity Line.


<PAGE>




         Access to  Technology  and Know-How Each Division will have free access
to all  technology  and  know-how  of the  Company  that may be  useful  in such
Division's business, subject to any obligations or limitations applicable to the
Company.

         Disposition  of  Oncology  Division  Designated  Shares.  The  Oncology
Division  Designated Shares may be (a) issued upon the exercise or conversion of
outstanding  stock  options,  warrants or  convertible  securities  allocated to
Agouron  Pharmaceuticals,  (b) subject to the restrictions set forth below under
"Issuance  and Sale of  Additional  Shares of Common  Stock," sold for any valid
business  purpose or (c)  distributed  as a dividend to the holders of shares of
the Agouron  Pharmaceuticals  Stock,  all as determined from time to time by the
Board.

     Any  Oncology  Division  Designated  Shares on June 30 of each year will be
distributed to the Agouron  Pharmaceuticals  shareholders of record on such date
on or before the immediately following August 15. However, in the event that the
number of Oncology Division Designated Shares exceeds more that 15% of the total
outstanding  shares of Oncology  Division Common Stock,  such Oncology  Division
Designated  Shares will be  distributed as soon as practicable to the holders of
the Agouron Pharmaceuticals Stock. See "--Oncology Division Designated Shares."

         Issuance and Sale of Additional Shares of Common Stock. When additional
shares of Common  Stock are issued and sold by the  Company,  the  Company  will
identify  (i) the number of such  shares  issued and sold for the account of the
Division to which they  relate,  the  proceeds of which will be allocated to and
reflected in the  financial  statements  of such Division and (ii) the number of
such shares  issued and sold that shall  reduce the number of Oncology  Division
Designated Shares of such Division.  Notwithstanding the foregoing,  the Company
will not sell any Oncology  Division  Designated Shares (except upon exercise or
conversion  of options,  warrants or  convertible  securities  issued by Agouron
Pharmaceuticals  that were  adjusted as a result of a dividend  of the  Oncology
Division Stock paid to holders of the Agouron  Pharmaceuticals Stock) unless (i)
the Board determines that the Oncology  Division has cash sufficient to fund its
operations  for at least  the next 12  months  or (ii)  shares  of the  Oncology
Division  Stock are  concurrently  being sold for the  account  of the  Oncology
Division  in an  amount  that  will  produce  proceeds  sufficient  to fund such
Division's cash needs for the next 12 months.

         Open   Market   Purchases   of   Shares  of   Common   Stock.   Agouron
Pharmaceuticals may make open market purchases of any series of its Common Stock
in accordance with applicable  securities law requirements;  provided,  however,
that in no event  shall any such  purchases  be made if as an  immediate  result
thereof the number of Oncology Division Designated Shares will exceed 60% of the
number  of shares  of the  Oncology  Division  outstanding  plus such  number of
Oncology Division Designated Shares.  Notwithstanding  the foregoing,  within 90
days of any open market purchase of the Common Stock  representing  the Oncology
Division,  Agouron Pharmaceuticals may not exercise the right provided under the
Restated Articles to exchange shares  representing such Division for cash and/or
shares of the Agouron Pharmaceuticals Stock.

         Capital Spending.  It is anticipated that the Oncology Division will be
in the development  stage for at least several years and therefore will not have
annual cash flows  sufficient  to finance  its normal  annual  capital  spending
program.  Any  decision  by the Board to fund  capital  expenditures  or capital
investments  in excess of the cash flows of the  respective  Divisions  would be
made by the Board in the exercise of its good faith  business  judgment based on
all relevant  circumstances,  including the  financing  and investing  needs and
objectives of each Division, the availability and cost of alternative financing,
the   existence   of   alternative   investment    opportunities   for   Agouron
Pharmaceuticals  and the  Oncology  Division,  and the  Board's  analysis of the
desirability of making such investment or acquisition.

         Fiduciary   and   Management    Responsibilities.    Because    Agouron
Pharmaceuticals  and the Oncology  Division will continue to be part of a single
company, the Board and management will have the same fiduciary duties to holders
of the Agouron  Pharmaceuticals  Stock and the Oncology Division Stock that they
currently  have to the holders of the Existing  Common Stock.  Under  California
law, a director or a member of management  will be deemed to have  satisfied his
or her fiduciary duties to the Company and its shareholders if he or she acts in
a manner which he or she  believes in good faith to be in the best  interests of
the Company and with the care, including reasonable inquiry,  that an ordinarily
prudent person in a like position  would  exercise under similar  circumstances.
The  Board and the Chief  Executive  Officer  of the  Company,  in  establishing
policies  with regard to  intracompany  matters such as  allocations  of assets,
liabilities,  debt, corporate overhead,  taxes, interest and other matters, will
consider various factors and information  which could benefit or cause detriment
to the shareholders of the respective  Divisions and will make determinations in
the best interests of the Company.


<PAGE>




         Because the  Divisional  Stock Proposal will result in no change in the
corporate structure of the Company,  Peter Johnson,  the Company's President and
Chief Executive Officer,  will have the same duties and responsibilities for the
management  of the  Company's  assets  and  businesses  which  comprise  Agouron
Pharmaceuticals  and the Oncology Division  following the Distribution as he did
prior  thereto.  The  Company's  senior  staff  officers  will  continue  to  be
responsible  for the same designated  functions in both Agouron  Pharmaceuticals
and the Oncology  Division as they were prior to the Effective  Date.  The costs
attributable  to their  functions will be allocated as discussed above under "--
Corporate Overhead."

         While it is the intent of directors to remain impartial notwithstanding
their equity  ownership  interests in Agouron  Pharmaceuticals  and the Oncology
Division,  because of the anticipated  differences in trading values between the
two securities,  the actual value of the shares of Agouron Pharmaceuticals Stock
and Oncology Division Stock held by directors initially will vary significantly.
See "Risk Factors - Risks Related to the  Divisional  Stock  Proposal--Fiduciary
Duties of the Board; No Definitive Precedent Under California Law."

         Board Review of Corporate  Opportunities  and Other Matters.  The Board
will also  review  any matter  which  involves  the  allocation  of a  corporate
opportunity  of the Company to either  Agouron  Pharmaceuticals  or the Oncology
Division.   In  accordance   with  California  law,  the  Board  will  make  its
determination  with  regard  to  the  allocation  of  any  such  opportunity  in
accordance with their good faith business  judgment of the best interests of the
Company. Among the factors that the Board may consider in making such allocation
is whether a particular  corporate  opportunity  is  principally  related to the
business  of Agouron  Pharmaceuticals  or the  Oncology  Division,  whether  one
Division,  because of its managerial or operational  expertise,  would be better
positioned  to  undertake  the  corporate   opportunity,   existing  contractual
agreements  and  restrictions,  and other  matters.  The Board will also  review
allocations  between the Divisions of significant  tax benefits or charges,  the
write-off of significant assets, the allocation of significant liabilities,  and
any  actions  which  would  significantly  affect the  Divisions'  access to the
Company's credit.

         Competition Between Divisions. Agouron Pharmaceuticals and the Oncology
Division will not compete in each other's  principal  business.  It is currently
contemplated  that certain products  developed by the Oncology  Division will be
marketed by Agouron  Pharmaceuticals  and co-marketed by the Oncology  Division.
The Oncology Division will receive a royalty on the net sales of such product in
certain  countries  and profits  from the sale of such  products in the U.S. and
Canada will be shared in  proportion  to each  Divisions  co-promotion  efforts.
Other products, at the sole discretion of the Oncology Division, may be marketed
exclusively  by  the  Oncology   Division  or  in  collaboration   with  Agouron
Pharmaceuticals   or   a   non-affiliated   third   party   collaborator.    See
"--Commercialization  of Products" and  "--Revenue  Allocation."  Alternatively,
certain products may be marketed by collaborators of the Company.

Description Of Capital Stock

         The following  description is qualified in its entirety by reference to
Annex II to this Proxy  Statement,  which contains the full text of the Restated
Articles.

   General

         The Company's Articles currently provide that the Company is authorized
to issue two classes of shares,  designated common and preferred,  respectively.
75,000,000  shares of Common Stock are  authorized  for issuance,  and 2,000,000
shares of Preferred Stock are currently authorized for issuance,  of which 2,000
shares have been designated  Series B Participating  Preferred Stock. As of July
28, 1998, 31,053,380 shares of Existing Common Stock were issued and outstanding
and no shares of Preferred Stock were issued and outstanding.

         If  the  Divisional   Stock  Proposal  is  approved  by  the  Company's
shareholders,  the authorized Common Stock will consist of 150,000,000 shares of
which  75,000,000 will initially be designated  Agouron  Pharmaceuticals  Stock,
25,000,000 will initially be designated  Oncology  Division Stock and 50,000,000
will initially be  undesignated  Common Stock.  In the aggregate,  the number of
authorized  shares of Common Stock would increase from 75,000,00 to 150,000,000.
The Agouron  Pharmaceuticals Stock and the Oncology Division Stock will have the
voting powers,  qualifications and rights described below. The number of shares,
rights, preferences, privileges and restrictions of any future designated series
of  Common  Stock  will  be  determined  by the  Board  at  the  time  of  their
designation.  The Board will also be able to increase or decrease (but not below
the  number of shares  then  outstanding)  the  number of shares of an  existing
series of Common Stock without the approval of shareholders.


<PAGE>




         In addition to the  amendments to the Articles in  connection  with the
Divisional  Stock Proposal,  the Articles will be further amended to designate a
new Series C Participating  Preferred Stock as "Series C Participating Preferred
Stock," no par value,  consisting  of 2,000 shares (the "Series C  Participating
Preferred  Stock") and to amend  certain  provisions  of the already  designated
Series B Participating  Preferred  Stock.  The Series C Participating  Preferred
Stock will have  substantially  the same  rights,  preferences,  privileges  and
restrictions as the Series B Participating  Preferred  Stock.  These  amendments
relating to the  Participating  Preferred Stock will be necessary as a result of
the Divisional Stock Proposal and its effect on the Company's Rights  Agreement.
See "Proposal 2 - Divisional Stock Proposal -- Restated Rights Agreement."

  Voting Rights

         Currently,  holders of Existing Common Stock have one vote per share on
all matters  submitted to  shareholders.  In addition,  holders of any series of
Preferred  Stock would have the right to vote as a separate  voting  group under
the California Corporations Code in certain circumstances. The Restated Articles
will  provide  that the holders of all series of Common  Stock and any series of
Preferred  Stock  outstanding  at the  time of such  vote and  entitled  to vote
together  with the holders of Common Stock will vote together as a single voting
group on all matters as to which common  shareholders  generally are entitled to
vote other than a matter with respect to  which  the  Common  Stock  or a series
thereof or any series of Preferred Stock would be entitled to vote as a separate
voting  group.  On all matters as to which all series of Common  Stock will vote
together  as a single  voting  group:  (i)  each  outstanding  share of  Agouron
Pharmaceuticals  Stock  will have one  vote,  and (ii)  each  share of  Oncology
Division  Stock will have ____ vote until June 30, 2000, and on July 1, 2000 and
on each July 1 every two years  thereafter,  the  number of votes to which  each
share of Oncology  Division  Stock is  entitled  will be adjusted to reflect the
ratio of the weighted  average market  capitalization  of the Oncology  Division
Stock  and the  Agouron  Pharmaceuticals  Stock,  so that the  resulting  voting
percentage  of each Division will be  proportionate  to its market value.  If no
shares of Agouron  Pharmaceuticals  Stock are outstanding on such date, then all
other series of the Company's Common Stock  outstanding on such date will have a
number of votes such that each share of the series of Common  Stock that has the
highest  market  capitalization  on such date (the "Base  Series") will have one
vote, and each share of each other series of outstanding  Common Stock will have
the number of votes determined according to the immediately  preceding sentence,
treating, for such purposes the Base Series as the Agouron Pharmaceuticals Stock
in such sentence.

         The voting rights of the Oncology  Division Stock will be appropriately
adjusted so as to avoid dilution in the aggregate voting rights of any series of
Common Stock in the event the  outstanding  shares of any series are  subdivided
(by stock split,  reclassification  or  otherwise) or combined (by reverse stock
split, reclassification or otherwise), or in the event of the issuance of shares
of any  series as a  dividend  or a  distribution  to  holders of shares of such
series.  If shares of only one  series of Common  Stock are  outstanding,  or if
shares of any series of Common Stock are entitled to vote separately as a class,
each share of that series would have one vote.

         If the Divisional  Stock Proposal is approved by the  shareholders  and
implemented  thereafter,  the Company  will set forth the number of  outstanding
shares of each series of Common Stock in its Annual and Quarterly  Reports filed
pursuant to the Exchange  Act, and will  disclose in any proxy  statement  for a
shareholder meeting the number of outstanding shares and per share voting rights
of each such series of Common Stock.

         The relative  voting rights of each series of Common Stock are adjusted
from time to time as described  above so that a holder's voting rights will more
closely  reflect the market  value of such  holder's  equity  investment  in the
Company.  Adjustments  in the  relative  voting  rights of each series of Common
Stock could (i) influence an investor  interested in acquiring and maintaining a
fixed  percentage of the voting power of the Company to acquire such  percentage
of all series of Common Stock,  and would (ii) limit the ability of investors in
one series to acquire for the same  consideration  relatively more or less votes
per share than investors in the other series.  To the extent the relative market
values of each  series of Common  Stock  change in between any  adjustments,  an
investor  in one  series of Common  Stock may  acquire  relatively  more or less
voting power for the same  consideration when compared with investors in another
series of Common Stock.


<PAGE>




         Following  implementation  of the Divisional Stock Proposal,  under the
current  California  Corporations  Code, the holders of Agouron  Pharmaceuticals
Stock and Oncology  Division Stock will vote together as a single class,  except
as to certain  amendments  to the  Restated  Articles  that  adversely  affect a
particular  series in a different  manner  than other  shares of the same class,
certain  mergers  and  statutory   share   exchanges,   and  certain   statutory
dissolutions,  in which case a separate  vote by the  holders of the  particular
class  affected  would also be required.  Accordingly,  if a separate  vote on a
matter  by the  holders  of either  Agouron  Pharmaceuticals  Stock or  Oncology
Division  Stock is not required  under the  California  Corporations  Code or by
stock  market  rules,  and if the Board does not  require a separate  vote,  the
series,  if any,  that is entitled to more than the number of votes  required to
approve  such  matter  will be in a position to control the outcome of such vote
even if the matter  involves a  divergence  or conflict of the  interests of the
holders of the Agouron  Pharmaceuticals  Stock and the Oncology  Division Stock.
Under the California Corporations Code, approval of actions requiring a separate
series  vote will  require  the  approval  of the  holders of a majority  of the
outstanding shares of each series, voting separately.  Most other matters (other
than the election of directors  whereby directors who receive the highest number
of votes are elected)  will be approved if the  affirmative  votes  constitute a
majority of the votes cast by the holders of the Agouron  Pharmaceuticals  Stock
and the Oncology  Division Stock,  voting  together as a single class,  provided
that the  affirmatively  voted shares also constitute at least a majority of the
required  quorum.  Because  the  holders of Agouron  Pharmaceuticals  Stock will
initially  have  more than the  number of votes  required  to  approve  any such
matters  requiring  only the  approval  of a majority  of the votes  cast,  such
holders  would be in a  position  to control  the  outcome of the vote on such a
matter.   See  "Risk   Factors  -  Risks   Related  to  the   Divisional   Stock
Proposal--Limited Separate Voting Rights; Variable Voting Rights."

  Liquidation Rights

         In the event of a voluntary or involuntary dissolution,  liquidation or
winding up of the affairs of the  Company,  after the Company has  satisfied  or
made provision for its debts and  obligations  and for payment to the holders of
shares of any series or class of capital  stock  having  preferential  rights to
receive  distributions  of the net  assets of the  Company,  the  holders of the
Common  Stock are  entitled  to receive the net assets,  if any,  remaining  for
distribution  to common  shareholders  on a per share basis in proportion to the
respective per share liquidation units of such class.  Shareholders will have no
direct  claim  against  any  particular  assets  of  the  Company  or any of its
subsidiaries.  Each share of Agouron  Pharmaceuticals  Stock has 100 liquidation
units and each share of  Oncology  Division  Stock  will have _____  liquidation
units.   The  liquidation   units  of  the  Oncology   Division  Stock  will  be
appropriately  adjusted  so as to avoid  dilution in the  aggregate  liquidation
rights  of any  series in the event the  outstanding  shares of any  series  are
subdivided  (by stock  split,  reclassification  or  otherwise)  or combined (by
reverse  stock split,  reclassification  or  otherwise),  or in the event of the
issuance of shares of any series as a dividend or a  distribution  to holders of
shares of that series, but will not otherwise be adjusted.  A merger or business
combination  involving the Company or a sale of all or substantially  all of the
assets of the Company will not be treated as a liquidation.

  Dividend Rights

         The Company has never paid any cash  dividends on shares of its capital
stock.  The Company  currently  intends to retain its earnings to finance future
growth and, therefore, does not anticipate paying any cash dividend on any class
of Common Stock in the foreseeable future.

         Dividends or other distributions on the Agouron  Pharmaceuticals  Stock
and the  Oncology  Division  Stock will be subject  to the same  limitations  as
dividends  or other  distributions  on the  Existing  Common  Stock.  Under  the
California Corporations Code, no dividends or other distributions may be made to
shareholders,  unless made from retained  earnings or, if after giving effect to
such dividends or other  distributions,  the Company's  assets would be at least
equal to 1 1/4 times its liabilities;  and, subject to certain  exceptions,  the
current  assets  of  the  Company  would  be  at  least  equal  to  its  current
liabilities.

         Dividends or other distributions on the Agouron  Pharmaceuticals  Stock
and the Oncology Division Stock will be further limited by the Restated Articles
to an amount not in excess of Agouron Pharmaceuticals  Available Dividend Amount
and the Oncology Division Available Dividend Amount, respectively.

         The  "Agouron   Pharmaceuticals   Available  Dividend  Amount"  or  the
"Oncology  Division Available Dividend Amount," on any date, means any amount in
excess of the amount  legally  available for payment of dividends  determined in
accordance  with  California  law  applied  if  such  Division  were a  separate
corporation  (such  amount  with  respect to a  Division  is  referred  to as an
"Available Dividend Amount").


<PAGE>




         In addition, the amount legally available for payment of dividends will
be determined on the basis of the entire  Company,  and not just the  respective
Divisions. Consequently,  dividend or other distribution payments on the Agouron
Pharmaceuticals Stock and the Oncology Division Stock could be precluded because
of the available  limits under the  California  Corporations  Code,  even though
there may exist an  Available  Dividend  Amount  with  respect  to the  relevant
Division. There can be no assurance that an Available Dividend Amount will exist
with  respect  to either  Division.  See "Risk  Factors - Risks  Related  to the
Divisional  Stock  Proposal - Potential  Divergence  of  Interests;  No Specific
Procedures for Resolution - No Assurance of Payment of Dividends."

         Subject to the prior payment of distributions on any outstanding shares
of Preferred Stock and the foregoing limitations, the Board will be able, in its
sole discretion, to declare and pay dividends or other distributions exclusively
on the Agouron Pharmaceuticals Stock, exclusively on the Oncology Division Stock
or on both, in equal or unequal amounts, notwithstanding the amount of dividends
or other distributions previously declared on each series, the respective voting
or liquidation rights of each series or any other factor.

  General Redemption and Conversion Provisions

         The Company's  Articles  currently do not provide,  and the  Divisional
Stock Proposal does not provide,  for either mandatory or optional conversion or
redemption  of  the  Agouron  Pharmaceuticals  Stock.  If the  Divisional  Stock
Proposal is approved  the  Restated  Articles  will  provide  that the  Oncology
Division  Stock may be  exchanged  for any  combination  of cash and/or  Agouron
Pharmaceuticals Stock upon the terms described below. The Company cannot predict
the impact on the market  prices for each series of Common  Stock of its ability
to effect such exchanges.

         Optional  Redemption  and/or  Conversion.  The  Board  may at any  time
determine to exchange all or part of the outstanding shares of Oncology Division
Stock for any combination of cash and/or Agouron  Pharmaceuticals Stock having a
Fair  Market  Value  equal to 125% of the  Fair  Market  Value  of the  Oncology
Division  Stock,  such Fair Market Value being  determined by the trading prices
during a specified period prior to the first public  announcement by the Company
of such exchange.

         The foregoing  provision  allows the Company the  flexibility to redeem
all  outstanding  shares of the Oncology  Division  Stock and leave  outstanding
classes of Common Stock that would, collectively,  represent the residual equity
interest in the Company.  The optional exchange could be exercised at any future
time if the Board  determined  that,  under the  facts  and  circumstances  then
existing,  a  particular  series  of  Common  Stock  was no  longer  in the best
interests of all of the Company's shareholders.  Such exchange may be completed,
however,  at a time  that is  disadvantageous  to the  holders  of the  Oncology
Division Stock.

         The right of the Board to exchange all  outstanding  shares of Oncology
Division Stock for any combination of cash and/or Agouron  Pharmaceuticals Stock
having  a Fair  Market  Value  equal  to 125% of the  Fair  Market  Value of the
Oncology  Division  Stock does not  preclude  the Board from  making an offer to
exchange  such  shares  on terms  other  than  those  provided  in the  Restated
Articles.  Although  any  alternative  offer would be subject to  acceptance  by
holders of the shares to be  exchanged,  such offer  could be made on terms less
favorable than those provided in the Restated Articles.  See "Risk Factors Risks
Related to the Divisional  Stock Proposal -- Potential  Divergence of Interests;
No Specific  Procedures for Resolution -- Optional Exchange of Oncology Division
Stock."

         In the event Agouron  Pharmaceuticals  Stock is not publicly  traded at
the time of a conversion of the Oncology  Division Stock,  the Board may convert
the Oncology  Division  Stock into fully paid and  nonassessable  shares of such
other publicly  traded class or series of common stock as has the largest market
capitalization at the time of the conversion.

         Mandatory   Conversion   and/or   Redemption.   In  the  event  of  the
disposition,  in one  transaction  or a series of related  transactions,  by the
Company of all or  substantially  all of the properties and assets  allocated to
the Oncology  Division (other than in connection with the sale by the Company of
all or substantially all of its properties and assets) to any person,  entity or
group,  other  than (i) a wholly  owned  subsidiary  of the  Company or (ii) any
entity  formed at the  direction  of the Company in  connection  with  obtaining
financing for the programs or products of the Oncology Division, as the case may
be, the Company on or prior to the first  business  day  following  the 90th day
following  consummation  of such  disposition  will be required to exchange each
outstanding  share of the Oncology  Division  Stock for any  combination of cash
and/or Agouron Pharmaceuticals Stock having a Fair Market Value equal to 125% of
the Fair  Market  Value of the  Oncology  Division  Stock as  determined  by the
trading  prices  during a specified  period  prior to the  consummation  of such
disposition.  Consequently,  holders of  Oncology  Division  Stock may receive a
greater or lesser  premium for their  shares  than any  premium  paid by a third
party buyer of the assets of the Oncology Division. In

<PAGE>



addition, any such exchange for shares of Agouron Pharmaceuticals Stock could be
made  at a time  when  the  Oncology  Division  Stock  may be  considered  to be
undervalued  and  the  Agouron   Pharmaceuticals   Stock  is  considered  to  be
overvalued.  See "Risk Factors - Risks Related to the Divisional  Stock Proposal
- -- Potential  Divergence of Interests;  No Specific  Procedures  for  Resolution
Disposition of Division Assets."

Oncology Division Designated Shares

         Oncology  Division  Designated Shares are authorized shares of Oncology
Division  Stock,  which are not  issued  and  outstanding,  but which the Board,
pursuant to the Company's management and allocation  policies,  may from time to
time issue,  sell or otherwise  distribute  without  allocating  the proceeds or
other benefits of such issuance,  sale or distribution to the Oncology Division.
The shares of Oncology  Division  Stock that are  issuable  with  respect to the
Oncology Division  Designated Shares are not outstanding  shares of the Oncology
Division Stock, are not eligible to receive dividends and cannot be voted by the
Company.

         The number of Oncology  Division  Designated  Shares will  initially be
zero but from time to time will be:

         (a) increased by

                  (i) the number of any outstanding  shares of Oncology Division
Stock  repurchased by the Company,  the consideration for which was allocated to
Agouron Pharmaceuticals;

                  (ii) the number of shares of Oncology Division Stock (rounded,
if  necessary,  to the  nearest  whole  number)  equal  to the  fair  value  (as
determined by the Board) of assets or properties  (including  cash) allocated to
Agouron  Pharmaceuticals  that are  reallocated to the Oncology  Division (other
than  reallocations  that represent  sales at fair value between such Divisions)
divided by the Fair Market Value of one share of Oncology  Division  Stock as of
the date of such reallocation;

                  (iii) a number equal to the quotient  obtained by dividing (a)
the aggregate  amount of all advances made under the Equity Line by (b) the Fair
Market Value of the Oncology Division Stock on the date of each exchange;

         (b)  decreased  (but to not less  than  zero) by (i) the  number of any
shares of Oncology  Division Stock issued by the Company,  the proceeds of which
are  allocated  to  Agouron  Pharmaceuticals,  (ii) the  number of any shares of
Oncology  Division  Stock  issued upon the  conversion,  exercise or exchange of
Convertible Securities (other than Pre-Effectiveness Convertible Securities) the
proceeds of which are attributed to Agouron  Pharmaceuticals (iii) the number of
any shares of  Oncology  Division  Stock  issued by the Company as a dividend or
distribution or by reclassification, exchange or otherwise to holders of Agouron
Pharmaceuticals  Stock; (iv) the number of any shares of Oncology Division Stock
issued upon the conversion,  exercise or exchange of any Convertible  Securities
(other than Pre-Effectiveness Convertible Securities) issued by the Company as a
dividend   or   other   distribution   (including   in   connection   with   any
reclassification  or exchange  of shares) to holders of Agouron  Pharmaceuticals
Stock,  and (v) the number of shares of Oncology  Division  Stock  (rounded,  if
necessary,  to the nearest whole number) equal to the fair value (as  determined
by the Board) of assets or properties (including cash) allocated to the Oncology
Division that are reallocated to Agouron  Pharmaceuticals in consideration for a
reduction in the number of Oncology  Division  Designated  Shares divided by the
Fair Market Value of one share of Oncology Division Stock as of the date of such
reallocation; and

         (c) adjusted as appropriate to reflect  subdivisions (by stock split or
otherwise)  and  combinations  (by  reverse  stock  split or  otherwise)  of the
Oncology  Division  Stock and dividends or  distributions  of shares of Oncology
Division Stock to holders of Oncology Division Stock and other reclassifications
of Oncology Division Stock.

        "Convertible Securities" means any securities of the Company,  including
preferred stock,  warrants,  options and other rights (other than Common Stock),
that are convertible  into,  exchangeable  for or evidence the right to purchase
any shares of any series of Common Stock,  whether upon conversion,  exercise or
exchange, pursuant to anti-dilution provisions of such securities or otherwise.

        "Pre-Effectiveness  Convertible Securities" means Convertible Securities
of the Company that are outstanding on the Effective Date and are, prior to such
date, convertible into or exercisable or exchangeable for Existing Common Stock.



<PAGE>



Increase In Authorized Common Stock

     The  Articles  currently  authorize  the issuance of  75,000,000  shares of
Existing  Common Stock. In connection  with the Divisional  Stock Proposal,  the
Articles will be amended to designate  Agouron  Pharmaceuticals  Stock initially
consisting of 75,000,000 authorized shares and Oncology Division Stock initially
consisting of 25,000,000 authorized shares. In addition,  the Board from time to
time can issue one or more  additional  series or  additional  shares of Agouron
Pharmaceuticals  Stock or Oncology  Division  Stock.  In the  aggregate,  if the
Divisional  Stock Proposal is implemented,  the number of shares of Common Stock
authorized   for  issuance  will  increase  from   75,000,000  to   150,000,000.
Additionally, the Board would be authorized to determine the number of shares of
each new  series and all rights and  privileges  of each new  series,  including
dividend rights, conversion or redemption provisions, rights upon liquidation or
merger,  and voting  rights and to increase or decrease  the number of shares in
any existing series. Under the existing Articles, the issuance of a new class or
series of common  stock,  such as the  Oncology  Division  Stock  would  require
shareholder approval.  The increase in authorized shares provides the Board with
a means to act quickly and definitively to complete strategic  transactions such
as acquisitions or to further divide the business of the Company into additional
divisions  without  the  need  to  obtain  shareholder  approval  unless  deemed
advisable by the Board or required by applicable law, regulation or stock market
requirements.

         The increase in authorized  shares of Common Stock will be used in part
to implement the various aspects of the Divisional Stock Proposal.  Further,  as
described  under  "--Description  of  Capital   Stock--General   Redemption  and
Conversion Provisions," the Board has the right to convert the Oncology Division
Stock into the Agouron Pharmaceuticals Stock at a 25% premium to the Fair Market
Value of the  Oncology  Division  Stock at any  time,  or in  connection  with a
disposition  of all or  substantially  all properties and assets of the Oncology
Division.  The Board may also pay a share dividend in one series of Common Stock
on such series of Common Stock,  or declare a stock split.  The number of shares
issuable in a conversion  will,  therefore,  vary based on the  relative  market
values of the two series of Common Stock and the number of outstanding shares of
the Oncology Division Stock to be converted. The Board believes that an increase
in the number of  authorized  shares of Common Stock at this time is in the best
interests of the Company in order to have  available the number of shares needed
for a future conversion,  share dividend or stock split if such a transaction is
determined to be in the best interests of the Company.

         Other than the  Reclassification  of the Existing Common Stock pursuant
to the  Divisional  Stock  Proposal  and the  issuance of shares of Common Stock
pursuant to the Company's  employee  benefit  plans,  the Company has no present
intention  or  agreement  with respect to the issuance for any purpose of any of
the  shares  of  Common  Stock  that  will be  authorized  for  issuance  if the
Divisional Stock Proposal is approved by the shareholders.  The Board,  however,
has considered and may in the future consider the creation of additional  series
of stock that would track the  performance  of the other lines of the  Company's
business.

Determinations by the Board

         If the Divisional  Stock Proposal is approved by the  shareholders  and
implemented  by the Board,  any  determinations  made in good faith by the Board
under any provision  described  under "-- Description of Capital Stock," and any
determinations  with  respect to any Division or the rights of holders of shares
of any series of Common Stock,  will be final and binding on all shareholders of
the Company.

Dividend Policy

         Agouron  has never  paid any cash  dividends  on shares of its  capital
stock. Agouron currently intends to retain its earnings to finance future growth
and,  therefore,  does not anticipate  paying any cash dividend on any series of
Common Stock in the foreseeable future.

         The Board  does not  currently  intend to  change  the  above-described
dividend  policy but  reserves  the right to do so at any time,  or from time to
time,  based  on its  review  of the  financial  performance  of the  respective
Division  and of  the  Company  as a  whole.  Future  dividends  on the  Agouron
Pharmaceuticals  Stock and Oncology  Division Stock will be payable when, as and
if  declared  by the  Board out of all funds of the  Company  legally  available
therefor. See "--Description of Capital Stock--Dividends."



<PAGE>



Nasdaq National Market Listing

         The Existing Common Stock is traded on the Nasdaq National Market under
the symbol AGPH. There has been no prior market for the Agouron  Pharmaceuticals
Stock or the Oncology  Division  Stock.  Application has been made to The Nasdaq
Stock  Market,  Inc.  to  redesignate  the  Existing  Common  Stock  as  Agouron
Pharmaceuticals  Stock,  to be quoted on the Nasdaq  National  Market  under the
symbol AGPH, and for the quotation of the Oncology  Division Stock on the Nasdaq
National  Market under the symbol ____. The Company is unable to predict to what
extent a public market will develop for shares of Oncology Division Stock or the
prices at which the shares of Agouron Pharmaceuticals Stock or Oncology Division
Stock will trade in such market or otherwise.

Exchange Procedures

         Upon the implementation of the Divisional Stock Proposal,  the Existing
Common Stock share certificates (the "Existing  Certificates") will be deemed to
represent shares of Agouron Pharmaceuticals Stock. Following the Effective Date,
at such time as is  reasonably  determined  by the Board,  holders  of  Existing
Common Stock as of the Effective Date will be mailed  certificates  representing
shares of Oncology Division Stock.  Shareholders  should not mail their Existing
Certificates  to either the Company or its transfer agent in connection with the
Divisional  Stock  Proposal.  New  certificates  representing  shares of Agouron
Pharmaceuticals  Stock will be issued in replacement of Existing Certificates as
such certificates are received and canceled by the transfer agent.

Stock Transfer Agent And Registrar

         ChaseMellon  Shareholder  Services,   L.L.C.   ("ChaseMellon")  is  the
transfer  agent and registrar for the Existing  Common Stock.  If the Divisional
Stock  Proposal is approved by the  shareholders  and  implemented by the Board,
ChaseMellon will be selected as the transfer agent and registrar for the Agouron
Pharmaceuticals Stock and the Oncology Division Stock.

Financial Advisor

         PaineWebber is acting as financial advisor to the Company in connection
with the Divisional Stock Proposal.  The Company has agreed to pay PaineWebber a
fee for its services.  The Company also has agreed to reimburse  PaineWebber for
certain of its  reasonable  out-of-pocket  expenses  and has agreed to indemnify
PaineWebber  against  certain  liabilities,   including  liabilities  under  the
Securities Act.

No Dissenters' Rights

         Under the  California  Corporations  Code,  holders of Existing  Common
Stock do not  have  dissenters'  rights  with  regard  to the  Divisional  Stock
Proposal.

Certain Federal Income Tax Considerations

         The following discussion summarizes the principal United States federal
income tax  consequences  of the Divisional  Stock  Proposal.  The discussion is
based on the Internal  Revenue Code of 1986, as amended (the  "Code"),  Treasury
Department regulations, published positions of the IRS, and court decisions, all
of which are subject to change. In particular,  Congress could enact legislation
affecting  the  treatment of stock with  characteristics  similar to the Agouron
Pharmaceuticals  Stock and Oncology  Division  Stock or the Treasury  Department
could issue  regulations,  including  regulations  issued  pursuant to its broad
authority  under  Section  337(d) of the Code which could change  current law or
adversely effect existing interpretations of current law. Any such change, which
may or may not be retroactive,  could alter the tax  consequences to the Company
or the shareholders of the Company discussed herein.

Tax Implications to Shareholders

         This discussion is based on certain  assumptions  regarding the factual
circumstances  that will  exist at the time of the  Reclassification,  including
certain  representations  made to or to be made by the Company.  This discussion
addresses  only those  shareholders  who hold their  Existing  Common Stock as a
capital  asset within the meaning of Section  1221 of the Code,  and is included
for general  information  only. It does not discuss all aspects of United States
federal  income  taxation  that may be relevant to a particular  shareholder  in
light of such  shareholder's  personal  tax  circumstances  and may not apply to
certain types of shareholders who may be subject to special  treatment under the
federal income tax laws, such as insurance  companies,  corporations  subject to
the  alternative  minimum  tax,  banks,  dealers  in  securities  or  tax-exempt
organizations,  persons that hold  Existing  Common Stock as part of a straddle,
hedging or conversion transaction,

<PAGE>



persons whose functional  currency is not the U.S. dollar,  shareholders who for
United  States  federal  income tax purposes are foreign  corporations,  foreign
partnerships,  nonresident alien individuals,  foreign estates or foreign trusts
or to  shareholders  who  acquired  their  stocks  pursuant  to the  exercise of
employee  stock  options  or  otherwise  as  compensation.   In  addition,  this
discussion does not address the effect of any applicable state, local or foreign
laws or any federal tax laws other than those pertaining to the income tax. EACH
SHAREHOLDER OF THE COMPANY SHOULD CONSULT SUCH  SHAREHOLDER'S OWN TAX ADVISOR AS
TO THE  APPLICATION  OF THE  FEDERAL  INCOME  TAX  LAWS  TO  SUCH  SHAREHOLDER'S
PARTICULAR  SITUATION,  AS WELL AS TO THE APPLICABILITY AND EFFECT OF ANY STATE,
LOCAL, OR FOREIGN TAX LAWS TO WHICH THEY MAY BE SUBJECT.

         In the  opinion of  Pillsbury  Madison & Sutro LLP,  tax counsel to the
Company, for United States federal income tax purposes: (i) the Reclassification
will constitute a recapitalization within the meaning of Section 368(a)(1)(E) of
the Code, (ii) the Agouron Pharmaceuticals Stock and the Oncology Division Stock
will be treated for federal  income tax purposes as Common Stock of the Company,
(iii) except with respect to cash paid in lieu of fractional shares, if any, the
holders of the Divisional Stocks will not recognize income,  gain or loss in and
as a result of the Reclassification,  (iv) the Divisional Stocks received in the
Reclassification  will not  constitute  Section 306 stock  within the meaning of
Section  306(c)  of  the  Code,  (v)  the  Divisional  Stocks  received  in  the
Reclassification  will not constitute  nonqualified  preferred  stock within the
meaning of Section 351(g) of the Code and (vi) the amendment and  restatement of
the  Rights  Agreement  will  not  result  in  income,   gain  or  loss  to  the
shareholders.  As a result of such  treatment,  holders of Existing Common Stock
will take a tax basis in the Agouron Pharmaceuticals Stock and Oncology Division
Stock equal to their tax basis  prior to the  Reclassification  in the  Existing
Common Stock (reduced by the amount  allocable to any fractional  share interest
for which  cash is  received),  with such tax basis  being  allocated  among the
Agouron Pharmaceuticals Stock and Oncology Division Stock in proportion to their
relative fair market values at the time of the  Reclassification.  Cash received
in lieu of  fractional  shares  will result in the  recognition  of gain or loss
equal  to the  difference,  if  any,  between  the  shareholder's  basis  in the
fractional  shares  and the amount of cash  received.  A  shareholder's  holding
period for shares of Agouron  Pharmaceuticals  Stock and Oncology Division Stock
received in the Reclassification  will include such shareholder's holding period
for the shares of Existing Common Stock surrendered therefor.

         The IRS  announced  in 1987  that it was  studying  and would not issue
advance  rulings  on the  classification  of stock that has  certain  voting and
liquidation  rights in an issuing  corporation  but the dividend rights of which
are  determined  by reference  to the  earnings of a  segregated  portion of the
issuing corporation's assets.  Although in 1995 the IRS withdrew such stock from
its list of matters under consideration, the IRS has reiterated that it will not
issue advance  rulings  regarding  such stock.  There are no court  decisions or
other   authorities   that  bear  directly  on   transactions   similar  to  the
Reclassification.  It is possible, therefore, that the IRS could assert that the
Oncology Division Stock or the Agouron  Pharmaceuticals  Stock or both represent
property  other than stock of Agouron  ("Other  Property").  If such stocks were
treated as Other  Property,  the Company would  recognize a significant  taxable
gain on the Reclassification in an amount equal to the excess of the fair market
value of such Other Property over its federal income tax basis to the Company or
its  subsidiaries  allocable to such Other  Property.  In addition,  the Company
could lose the ability to file its federal  income tax returns on a consolidated
basis.  As a result,  the tax losses  expected to be  incurred  by the  Oncology
Division  could not offset the taxable  income  expected to be earned by Agouron
Pharmaceuticals  and any  amounts  paid or  deemed  paid to the  Company  by the
Oncology  Division or Agouron  Pharmaceuticals  could be taxable to the Company.
Furthermore,   the   receipt  of   Oncology   Division   Stock  or  the  Agouron
Pharmaceuticals  Stock by a  shareholder  of the  Company  might be treated as a
fully taxable dividend to such shareholder in an amount equal to the fair market
value of such stock  (subject,  in the case of  shareholders of the Company that
are corporations,  to any applicable  dividends received  deduction) or might be
treated as a distribution in complete  liquidation of the Company, in which case
shareholders  of the Company  would have gain or loss with respect to the shares
held in the Company immediately before the Reclassification. As indicated above,
however,  the Company has  received an opinion from tax counsel that the Agouron
Pharmaceuticals  Stock and the  Oncology  Division  Stock  will be  treated  for
federal income tax purposes as common stock of the Company.

         It is also possible that the IRS could assert, in the alternative, that
the  Oncology  Division  Stock  or the  Agouron  Pharmaceuticals  Stock  or both
represent  preferred stock (rather than Common Stock) of the Company for federal
income  tax  purposes.  In order to  support  such an  assertion  the IRS  would
generally  have to  conclude  that such stock is  limited  and  preferred  as to
dividends  and does not  participate  significantly  in corporate  growth.  As a
result of such a  conclusion,  the IRS could  further  assert that the  Oncology
Division  Stock  or  the  Agouron   Pharmaceuticals  Stock  or  both  should  be
characterized   as   "nonqualified   preferred  stock"  or  Section  306  stock.
Nonqualified  preferred  stock that is received by a  shareholder  in connection
with transactions intended to qualify as tax-free  reorganizations,  such as the
Reclassification,  will be treated  as taxable  Other  Property  rather  than as
tax-free stock  consideration  and  accordingly,  gain,  but not loss,  would be
recognized by the  shareholder.  If the  Divisional  Stocks were instead,  or in
addition,  treated as Section 306 stock, a shareholder could recognize  ordinary
income on the taxable sale or exchange of such stock and dividend income

<PAGE>



on the redemption of such stock. As mentioned above, the Company has received an
opinion from tax counsel that the Agouron Pharmaceuticals Stock and the Oncology
Division Stock will not constitute  nonqualified  preferred stock or Section 306
stock.

         Certain  non-corporate  holders of Oncology  Division  Stock or Agouron
Pharmaceuticals Stock might be subject to backup withholding at a rate of 31% on
the payment of dividends on such stock.  Backup  withholding  will apply only if
the  shareholder  (i) fails to furnish his,  her or its Taxpayer  Identification
Number  ("TIN"),  (ii)  furnishes an incorrect TIN, (iii) is notified by the IRS
that he,  she or it has  failed  properly  to report  payments  of  interest  or
dividends,  or  (iv)  under  certain  circumstances,  fails  to  certify,  under
penalties of perjury, that he, she or it has furnished a correct TIN and has not
been notified by the IRS that he, she or it is subject to backup withholding for
failure to report payments of interest or dividends. Shareholders should consult
their tax advisors  regarding  their  qualifications  for a tax  exemption  from
backup  withholding  and  the  procedure  for  obtaining  such an  exemption  if
applicable.  The amount of any backup  withholding from a payment to a holder of
Oncology  Division Stock or Agouron  Pharmaceuticals  Stock will be allowed as a
credit against such  shareholder's  federal income tax liability and may entitle
such  shareholder  to a  refund,  provided  that  the  required  information  is
furnished to the IRS.

         The  foregoing is for general  information  only.  Shareholders  should
consult their own tax advisors as to the federal,  state,  local and foreign tax
consequences  of the  Reclassification  and of the holding of Oncology  Division
Stock and Agouron Pharmaceuticals Stock.

United States Tax Consequences To Non-U.S. Shareholders

         Each Non-U.S.  Holder should  consult a tax advisor with respect to the
United States federal tax  consequences  of acquiring,  holding and disposing of
Oncology  Division Stock, as well as any tax  consequences  that may arise under
the laws of any foreign, state, local or other taxing jurisdiction.

Amendment of Stock Plans

     If the Divisional Stock Proposal is approved and implemented,  the Board or
its delegates, pursuant to applicable provisions of the Company's existing stock
option plans and Employee Stock Purchase Plan  (collectively  the "Stock Plans")
will determine appropriate  adjustments to outstanding options granted under the
provisions  of such Stock Plans to take into  account the implementation  of the
Division Stock Proposal.  Under these  adjustments  each  outstanding  option to
purchase Existing Common Stock will automatically be converted into an option to
purchase  the number of shares of  Agouron  Pharmaceuticals  Stock  equal to the
number of Existing Common Stock  previously  covered by the  outstanding  option
plus an option to  purchase  the number of shares of  Oncology  Division   Stock
equal to ______ of the  number of shares of  Existing  Common  Stock  previously
covered  by  the  outstanding  option.  The  aggregate  exercise  price  of  the
outstanding  option to purchase  Existing Common Stock will be allocated between
the  option  covering  Agouron  Pharmaceuticals  Stock and the  option  covering
Oncology  Division  Stock  in a  ratio  to be  determined  by the  Board  or its
delegates.

         In the event the Divisional Stock Proposal is approved and implemented,
the Stock Plans will be amended as of the Effective  Date to clarify that grants
made  after the  Effective  Date may be made  with  respect  to  either  Agouron
Pharmaceuticals  Stock or  Oncology  Division  Stock or both  (and/or  any other
series of  outstanding  Common Stock of the Company),  in the same manner and to
the same extent as permitted with respect to the Existing Common Stock. Although
the  Stock  Plan  language  authorizing   adjustments  to  shares  reserved  and
outstanding  awards and stock purchase rights implicitly permits the use of more
than one series of Common Stock for awards and stock  purchase  rights under the
Stock Plans, the Board believes that it is desirable to amend the Stock Plans to
explicitly  provide that shares of any series of Common Stock are  available for
awards.  For the text of the 1996  Stock  Option  Plan  and the  Employee  Stock
Purchase Plan as proposed to be amended, see Annexes VI and VII, respectively.

         In determining  whether  awards of options or stock purchase  rights to
purchase  Agouron   Pharmaceuticals  Stock  or  Oncology  Division  Stock  or  a
combination  thereof  are to be made to  specific  employees,  the  Board or its
delegates may consider,  among other things,  the Division to which the employee
in question provides services.  The Company also anticipates,  however, that the
Board or its delegates will consider that employees  should be rewarded based on
the  success  of the  Company  as a whole and that a policy of  granting  awards
solely in respect of the Common  Stock  relating to the  Division  for which the
employee provides  services may be counter  productive to the overall success of
the Company.  In addition,  because of the  complementary  nature of much of the
businesses of Agouron  Pharmaceuticals  and the Oncology  Division,  the Company
anticipates that services performed in respect of one Division may have at least
an

<PAGE>



indirect  effect  upon the  operations  of the other  Division.  Therefore,  the
Company  anticipates  that the Board or its delegates could decide that in order
to provide the maximum  incentive to employees  regarding the overall success of
the Company,  it may be appropriate to grant awards  consisting of securities in
respect of both Divisions to employees performing services for one Division.  If
the Board or its  delegates  elects  to grant  awards  to  individual  employees
consisting of stock options to purchase both Agouron  Pharmaceuticals  Stock and
Oncology  Division  Stock,  the  allocation  between  the  two  will  be at  the
discretion of the Board or its delegates.

Restatement Of Rights Agreement

         Pursuant to the Rights Agreement (the "Rights  Agreement")  between the
Company and  ChaseMellon  Shareholder  Services,  L.L.C.,  as Rights  Agent (the
"Rights  Agent"),  the  Company  issued a dividend  on  November  7, 1996 of one
preferred  stock  purchase  right on each share of Common Stock (a "Common Stock
Right").  If the  shareholders  approve the Divisional  Stock Proposal and it is
implemented by the Board,  the Rights  Agreement will be amended and restated to
reflect  the change in the capital  structure  of the Company and the Board will
declare a distribution to the holders of Oncology  Division Stock of a right (an
"Oncology Stock Right") for each outstanding  share of Oncology  Division Stock.
The Rights Agreement, as amended and restated (the "Restated Rights Agreement"),
will provide  that each  Agouron  Pharmaceuticals  Stock Right  ("Agouron  Stock
Right")  which will  replace the Common  Stock Right,  and each  Oncology  Stock
Right,  when it becomes  exercisable,  will  entitle  the  registered  holder to
purchase  from the Company (i) in the case of an Agouron  Pharmaceuticals  Stock
Right,  one one-ten  thousandth of a share of Series B  Participating  Preferred
Stock,  no par value  (the  "Series B  Shares"),  at a  purchase  price of $500,
subject to adjustment  (including adjustment for the two-for-one split of Common
Stock in August  1997),  and (ii) in the case of an Oncology  Stock  Right,  one
one-ten thousandth of a share of Series C Participating  Preferred Stock, no par
value  (the  "Series  C  Shares"),  at a  purchase  price  of $___,  subject  to
adjustment.  The Agouron  Stock Rights and Oncology  Stock Rights are  sometimes
hereinafter referred to together as the "Rights."

         The Restated Rights Agreement will provide that initially,  the Agouron
Stock  Rights and Oncology  Stock  Rights will be evidenced by the  certificates
representing  shares of  Agouron  Pharmaceuticals  Stock and  Oncology  Division
Stock, respectively,  then outstanding, and no separate Rights certificates will
be  distributed.  The Agouron  Pharmaceuticals  Stock and the Oncology  Division
Stock are sometimes  hereinafter referred to together as the "Voting Stock." The
Rights will  separate from the Voting Stock and a  Distribution  Date will occur
upon  the  earliest  of (i) a  public  announcement  that a  person  or group of
affiliated  or  associated  Persons (an  "Acquiring  Person") has  acquired,  or
obtained the right to acquire  beneficial  ownership of securities having 15% or
more of the voting power of all outstanding  voting securities of the Company or
(ii)  ten days  (unless  such  date is  extended  by the  Board)  following  the
commencement  of (or a public  announcement  of an  intention  to make) a tender
offer or exchange  offer  which would  result in any person or group and related
persons becoming an Acquiring Person.  Until the Distribution  Date, the Agouron
Stock Rights will be transferred with and only with the Agouron  Pharmaceuticals
Stock,  and the Oncology Stock Rights will be transferred with and only with the
Oncology  Division  Stock.  For purposes of the Restated Rights  Agreement,  the
total voting rights of the Voting Stock will be determined based upon the voting
rights of holders of  outstanding  shares of Agouron  Pharmaceuticals  Stock and
Oncology  Division  Stock in effect at the time of any such  determination.  See
"--Description of Capital Stock--Voting Rights."

         The Rights will not be  exercisable  until the  Distribution  Date. The
Rights will expire on the earliest of (i) November 21, 2006,  (ii)  consummation
of a  merger  transaction  with a person  or group  who  acquired  Voting  Stock
pursuant to a Permitted Offer (as defined below),  and is offering in the merger
the same price per share and form of consideration  paid in the Permitted Offer,
or (iii) redemption or exchange of the Rights by the Company as described below.

         In the event that,  after the first date of public  announcement by the
Company or an  Acquiring  Person that an Acquiring  Person has become such,  the
Company  is  involved  in a merger  or other  business  combination  transaction
(whether or not the Company is the surviving  corporation) or 50% or more of the
Company's  assets or earning power are sold (in one  transaction  or a series of
transactions),  proper  provision  will be made so that  each  holder of a Right
(other than an Acquiring Person) will thereafter have the right to receive, upon
the  exercise  thereof at the then  current  exercise  price of the Right,  that
number of  shares of  Agouron  Pharmaceuticals  Stock,  in the case of a Agouron
Stock  Right,  and Oncology  Division  Stock,  in the case of an Oncology  Stock
Right, in the event that the Company is the surviving corporation of a merger or
consolidation,  or Common Stock of the acquiring company (or, in the event there
is more than one acquiring company, the acquiring company receiving the greatest
portion of the assets or earning  power  transferred)  which at the time of such
transaction  would have a market  value of two times the  exercise  price of the
Right (such right being called the "Merger  Right").  In the event that a person
becomes  the  beneficial  owner of  securities  having 15% or more of the voting
power of all then outstanding  voting securities of the Company (unless pursuant
to a tender offer or exchange offer for all  outstanding  shares of Voting Stock
at a price and on terms  determined prior to the date of the first acceptance of
payment  for any of such  shares by at least a  majority  of the  members of the
Board who are not

<PAGE>



officers  of the  Company  and  are  not  Acquiring  Persons  or  affiliates  or
associates  thereof to be both adequate and  otherwise in the best  interests of
the Company and its shareholders (a "Permitted  Offer")),  then proper provision
will be made so that each holder of an Agouron Stock Right and an Oncology Stock
Right  will  for  a  60-day   period   (subject  to  extension   under   certain
circumstances) thereafter have the right to receive upon exercise that number of
shares of Agouron  Pharmaceuticals Stock or Oncology Division Stock, as the case
may be, having a market value of two times the exercise  price of the Right,  to
the extent  available,  and then (after all authorized and unreserved  shares of
Voting  Stock have been  issued) a Common  Stock  equivalent  (such as Preferred
Stock or another  equity  security with at least the same economic  value as the
Voting  Stock)  having a market  value of two  times the  exercise  price of the
Right,  with Voting Stock to the extent available being issued first (such right
being called the "Subscription  Right").  The holder of a Right will continue to
have the Merger  Right  whether or not such holder  exercises  the  Subscription
Right.  Notwithstanding the foregoing,  upon the occurrence of any of the events
giving rise to the exercisability of the Merger Right or the Subscription Right,
any Rights that are or were at any time after the Distribution  Date owned by an
Acquiring Person will immediately become null and void.

         At any time  prior to the  earlier  to  occur of a Person  becoming  an
Acquiring  Person or the  expiration  of the Rights,  the Company may redeem the
Rights in whole, but not in part, at a price of $.001 per Right (the "Redemption
Price"),  which  redemption  shall be  effective  upon the  action of the Board.
Additionally,  the Company may thereafter redeem the then outstanding  Rights in
whole,  but not in part,  at the  Redemption  Price  (a) if such  redemption  is
incidental to a merger or other  business  combination  transaction or series of
transactions  involving  the Company but not  involving an  Acquiring  Person or
certain  related  persons  or (b)  following  an event  giving  rise to, and the
expiration of the exercise period for, the Subscription Right if and for as long
as an Acquiring Person  beneficially owns securities  representing less than 15%
of the voting power of the Company's voting securities. The redemption of Rights
described in the preceding  sentence will be effective only as of such time when
the  Subscription  Right is not  exercisable,  and in any  event,  only after 10
Business Days prior notice.  Upon the  effective  date of the  redemption of the
Rights,  the right to exercise the Rights will  terminate  and the only right of
the holders of Rights will be to receive the Redemption Price.

         The Restated Rights Agreement will provide that,  subject to applicable
law,  the  Board,  at its  option,  may at any time  after a person  becomes  an
Acquiring Person (but not after the acquisition by such person of 50% or more of
the outstanding Voting Stock),  exchange all or part of the then outstanding and
exercisable  Agouron Stock Rights and Oncology  Stock Rights  (except for Rights
which have become void) for shares of Agouron  Pharmaceuticals Stock or Oncology
Division  Stock,  as the  case  may  be,  equivalent  to one  share  of  Agouron
Pharmaceuticals Stock per Agouron Stock Right and one share of Oncology Division
Stock per Oncology Stock Right or, alternatively,  for substitute  consideration
consisting  of  cash,  securities  of  the  Company  or  other  assets  (or  any
combination thereof).

         Prior  to the  Distribution  Date,  the  terms of the  Restated  Rights
Agreement  may be amended by the Board without the consent of the holders of the
Rights.  After the Distribution Date, the terms of the Restated Rights Agreement
may be amended by the Board in any manner  which the Company may deem  necessary
or desirable  and which will not  adversely  affect the  interests of the Rights
holders.

         In addition to the  amendment  to the Articles in  connection  with the
Divisional  Stock Proposal,  the Articles will be further amended to ensure that
the Rights  Agreement  conforms with  provisions of the California  Corporations
Code in that the Rights may  provide for  different  or  discriminate  treatment
among holders of the Rights in accordance with criteria selected by the Board in
connection with the creation of the Rights.

         Until a Right is exercised,  the holder thereof,  as such, will have no
rights as a shareholder of the Company, including, without limitation, the right
to vote or to receive dividends.

         A copy of the form of the Restated Rights  Agreement (which includes as
Exhibit B-1 the Form of Rights  Certificate  for Agouron  Pharmaceuticals  Stock
Rights and as Exhibit B-2 the Form of Rights  Certificate for Oncology  Division
Stock  Rights)  will  be  filed  with  the  Commission  as  an  exhibit  to  the
Registration Statement to which this Proxy Statement relates and is incorporated
herein by reference.  A copy of the Rights Agreement and the amendments  thereto
were filed with the  Commission  as Exhibit to the  Company's  Form 8-A and Form
8-A/A on November 8, 1996 and December 20, 1996 and are  incorporated  herein by
reference.  A copy of the Restated Rights  Agreement is available free of charge
from the Rights Agent. The foregoing description of the Rights is a summary only
and is qualified in its entirety by reference to the Restated  Rights  Agreement
and the Rights Agreement.

Anti-Takeover Considerations

         The following  information is provided with respect to certain  matters
that could be viewed as having the effect of  discouraging  an attempt to obtain
control of the Company.


<PAGE>




         The Articles provide that the Board has the authority,  without further
action by the  shareholders,  to issue from time to time the Preferred  Stock in
one or more  series  and to fix the  number  of  shares,  designations,  rights,
preferences,  privileges  and  restrictions  thereof.  The rights,  preferences,
privileges and  restrictions  of different  series of Preferred Stock may differ
with respect to dividend rates,  amounts payable on liquidation,  voting rights,
conversion rights,  redemption  provisions,  sinking fund provisions,  and other
matters.

         If the  Divisional  Stock Proposal is approved,  the Restated  Articles
will provide that the Board has the  authority,  without  further  action by the
shareholders,  to issue from time to time shares of a new series of Common Stock
and to fix the number of shares, designations,  rights, preferences,  privileges
and restrictions  thereof or to increase or decrease the number of shares of any
existing  series.  The  rights,  preferences,  privileges  and  restrictions  of
different  series of Common  Stock may differ with  respect to  dividend  rates,
amounts payable on liquidation,  voting rights,  conversion  rights,  redemption
provisions, and other matters.

          Although  the Board  has no  present  intention  of doing so, it could
issue shares of Preferred  Stock or of a new or existing  series of Common Stock
that  could,  depending  on the  terms of such  stock,  make more  difficult  or
discourage  an  attempt to obtain  control of the  Company by means of a merger,
tender offer,  proxy contest or other means. Such shares could be used to create
voting or other impediments or to discourage  persons seeking to gain control of
the Company and could also be privately placed with purchasers  favorable to the
Board in opposing such action. In addition, the Board could authorize holders of
a series of Common  Stock or  Preferred  Stock to vote  either  separately  as a
class, or with the holders of the Company's currently  outstanding Common Stock,
on any  merger,  sale  or  exchange  of  assets  by  the  Company  or any  other
extraordinary  corporate  transaction.  The  mere  existence  of the  additional
authorized  shares could have the effect of  discouraging  unsolicited  takeover
attempts.  The  issuance of new shares also could have a dilutive  effect on the
voting  power of existing  holders of Common Stock and on earnings per share and
could be used to dilute  the stock  ownership  of a person or entity  seeking to
obtain  control  of the  Company  should the Board  consider  the action of such
entity or person not to be in the best  interests  of the  shareholders  and the
Company.  To the  extent  that  potential  takeovers  are  thereby  discouraged,
shareholders  may not have the  opportunity to dispose of all or a part of their
stock at a price that may be higher than that prevailing in the market.



<PAGE>



                          PROPOSAL 3 - AMENDMENT OF THE
                             1996 STOCK OPTION PLAN

     Description of the 1996 Stock Option Plan

     The  essential  features of the Restated 1996 Stock Option Plan (the "Stock
Option Plan") are outlined below.  For a complete  understanding of the terms of
the Stock Option Plan, see Annex VI, which reflects amendments that will be made
if the  Divisional  Stock  Proposal  and this  Proposal  3 are  approved  by the
shareholders.

     The purpose of the Stock Option Plan is to encourage  officers,  directors,
employees  and   consultants  of  the  Company  to  acquire  or  increase  their
proprietary  interest  in the  success  of the  Company  and to  continue  their
affiliation  with  the  Company.   Eligible  employees  may  be  granted  either
"incentive  stock options" or  "non-statutory  stock options" to purchase Common
Stock under the Stock  Option  Plan.  Subject to certain  conditions,  officers,
directors and  consultants  who are not employees may be granted  "non-statutory
stock  options"  under the Stock  Option Plan.  An incentive  stock option is an
option which  qualifies for certain  favorable  income tax  treatment  under the
Internal Revenue Code. A non-statutory stock option is an option which is not an
incentive stock option for federal income tax purposes.

     As of August __, 1998,  under the Stock Option Plan, there were outstanding
options to  purchase  ______  shares of  Existing  Common  Stock under the Stock
Option Plan (of which options to purchase ________ shares were exercisable). The
Company has three  additional stock option plans: (1) the 1985 Stock Option Plan
(the  "1985  Plan")  under  which as of August __,  1998 there were  outstanding
options to purchase  ______ shares of Existing Common Stock (of which options to
purchase ________ shares were exercisable);  (2) the 1990 Stock Option Plan (the
"1990 Plan") under which as of August __, 1998 there were outstanding options to
purchase  ______  shares of Existing  Common Stock (of which options to purchase
________ shares were exercisable); and (3) the 1998 Stock Option Plan (the "1998
Plan")  under  which as of August __,  1998 there  were  outstanding  options to
purchase  ______  shares of Existing  Common Stock (of which options to purchase
__________  shares  were  exercisable).  At August __,  1998,  stock  options to
purchase an aggregate  number of _____ shares  remained  available  for issuance
under the Stock Option Plan including  1,000,000 shares approved by its Board on
August 6, 1998,  stock options to purchase an aggregate of _____ shares remained
available  for  issuance  under the 1985  Plan,  stock  options to  purchase  an
aggregate of _____ shares  remained  available for issuance under the 1990 Plan,
and stock options  purchase an aggregate of _____ shares remained  available for
issuance under the 1998 Plan.

     The Board  believes that the Company's  stock option  programs have created
significant incentives for its employees,  officers,  directors and consultants.
The Board  considers  it  important  for the future  success  of the  Company to
continue  to grant stock  options on a basis  comparable  with those  granted by
other  companies with which it competes in attracting,  retaining and motivating
qualified  personnel.  On August 6, 1998,  the Board adopted an amendment to the
Stock  Option  Plan,  to increase by 1,000,000  shares the  aggregate  number of
shares of Common Stock  available for issuance  under the Stock Option Plan. The
Board  has also  approved,  in  connection  with and  subject  to  approval  and
implementation  of the  Divisional  Stock  Proposal,  the amendment to the Stock
Option  Plan  to  conform  the  Plan to the  changes  in the  Company's  capital
structure  being made by the Divisional  Stock  Proposal.  See "Proposal  2--The
Divisional Stock Proposal--Amendment of Stock Plans."

     The total  number of shares  available  under the Stock  Option  Plan,  the
number of shares subject to outstanding options and the exercise price per share
of  outstanding  options will be subject to  adjustment  upon the  occurrence of
stock dividends,  recapitalizations,  consolidations, stock splits, combinations
or exchanges of shares of stock or other increases or decreases in the number of
shares of the Company's  Common Stock effected  without receipt of consideration
by the Company,  in order to preclude the  dilution or  enlargement  of benefits
under the Stock Option Plan. The Board may also make such equitable  adjustments
to the Stock  Option Plan and  outstanding  options as it deems  appropriate  in
order to preclude the dilution or enlargement of benefits under the Stock Option
Plan upon exchange of all of the  outstanding  Common Stock of the Company for a
different  class or series of capital  stock or the  separation of assets of the
Company,  including a spin-off or other distribution of stock or property by the
Company.  If any option under the Stock Option Plan  terminates or expires,  the
shares  allocable  to the  unexercised  portion  of the  option  will  again  be
available for purposes of the Stock Option Plan. In certain circumstances, where
an optionee uses stock to exercise an option,  only the net shares issued to the
optionee are counted  against the number of shares issued under the Stock Option
Plan.  Certain stock  issuances which are later forfeited by the optionee do not
count as grants under the Stock Option Plan.
<PAGE>

     A dissolution or liquidation of the Company,  a merger or  consolidation in
which the Company is not the surviving  corporation,  a reverse  merger in which
the  Company  is the  surviving  corporation  but  the  Company's  Common  Stock
outstanding  immediately  preceding  the  merger is  converted  by virtue of the
merger into other property,  or other capital  reorganization in which more than
fifty percent (50%) of the Company's Common Stock is exchanged, shall cause each
outstanding  option to terminate,  provided  that each  optionee  shall have the
right  immediately  prior to the occurrence of such event to exercise his or her
option in whole or in part;  however,  the exercise date of outstanding  options
shall not be accelerated  by such event if and to the extent:  (i) the option in
connection with such event is either to be assumed by the successor  corporation
or parent thereof or to be replaced with a comparable  option to purchase shares
of the capital stock of the successor corporation or parent thereof; or (ii) the
option is to be replaced by a comparable cash incentive program of the successor
corporation  based  on the  value  of the  option  on the  date of  such  event.
Notwithstanding  the preceding,  if within one year from the date of such event,
an  employee's  employment  is  involuntarily  terminated,  then the  employee's
outstanding stock options, if any, shall become immediately exercisable.

Administration of the Stock Option Plan

     The Stock Option Plan is administered  by the Board,  except that the Board
may delegate all or any part of its  authority  to  administer  the Stock Option
Plan with respect to any group or groups of persons  eligible to receive options
to such persons or committee as the Board may determine. The Board has currently
delegated  to a  committee,  composed  of  certain  of the  Company's  executive
officers,  the  authority  to  administer  the Stock Option Plan with respect to
persons  who  are  neither  officers  nor  directors  of  the  Company.  Further
references  herein to the  administration  of the Stock Option Plan by the Board
refer to the Board or its  delegates,  unless the context  otherwise  indicates.
Whether or not the Board has delegated  administrative  authority, the Board has
final power to determine all questions of policy or expediency that may arise in
the administration of the Stock Option Plan.

     The Board has the power to make all  determinations  necessary or advisable
for the  administration  of the Stock Option Plan.  The Board also has the final
power to construe and interpret the Plans and the options  granted under it. The
Board  determines,  within the limits of the Stock Option  Plan,  the persons to
whom  and the  time or times at  which  options  shall be  granted,  the type of
options to be granted (whether  incentive stock options or  non-statutory  stock
options),  the number of shares to be subject to each  option,  the  duration of
each option,  the option price and the time or times  within  which,  during the
term of option, all or any portion of an option becomes  exercisable  ("vests").
If the Divisional Stock Proposal is approved and  implemented,  the Board or its
delegates  shall be entitled to  determine  as of the grant date,  the series of
Common Stock from which shares will be issued on exercise of a specific  option.
The  Company's  current form of stock option  agreement  provides that an option
vests  over a two,  three or four year  period.  In the event  that an  employee
terminates his or her employment  with the Company,  unless the Board  otherwise
elects, the then nonvested portion of his or her option is forfeited. Subject to
the terms and  conditions  of the Stock  Option  Plan,  the Board may  modify an
outstanding  option (including  lowering the option price or changing  incentive
stock options into  non-statutory  stock options),  change the vesting schedule,
extend or renew  outstanding  options  granted  under the Stock  Option  Plan or
accept the  surrender  of  outstanding  options  (to the  extent not  previously
exercised) and authorize the granting of new options in  substitution  therefor.
The Board may permit an option to be exercised  before it is vested,  subject to
repurchase rights which terminate on a vesting schedule identical to the vesting
schedule  of the  option.  The Board may also  establish  other  limitations  or
restrictions upon exercise of options.

Grant and Exercise of Incentive Stock Options and Non-statutory Stock Options

     All  employees  of the Company  are  eligible  to receive  incentive  stock
options and non-statutory  stock options under the Stock Option Plan. Subject to
certain conditions,  officers,  directors and consultants of the Company who are
not  employees  are  eligible  to receive  non-statutory  stock  options but not
incentive  stock  options.  To the extent  required by Section 162(m) to qualify
future  compensation  as  "performance  based,"  options to  purchase  more than
750,000 shares may not be granted in a fiscal year to any individual participant
in the Stock Option Plan.
<PAGE>

     Incentive  stock  options under the Stock Option Plan may be granted by the
Board at any time  prior to  August  6,  2008.  Options  shall be  evidenced  by
agreements  in such  form  as the  Board  shall  from  time  to time  determine,
consistent  with the terms of the Stock Option  Plan.  The price per share under
each  incentive  stock  option must be at least 100% of the fair market value of
the Common Stock on the date the option is granted.  The Board can set any price
it wishes for shares granted under  non-statutory  stock options.  The price for
shares may be paid in any combination of cash, by cashier's or certified  check,
personal check  acceptable to the Company,  shares of the Company's Common Stock
(including  previously owned Common Stock or Common Stock issuable in connection
with the  exercise) or "built-in  gain" in any options  which are  terminated as
part of such  exercise.  The  Board may take such  steps it deems  necessary  to
facilitate the payment of the option price. However, payment of the option price
must  be in  such  form as the  Board  determines  and  the  Board  may  require
satisfaction  of any rules or conditions it deems  necessary in connection  with
the  payment  of the  option  price or on  account  of any  assistance  given an
optionee to facilitate such payment. The aggregate fair market value (determined
as of the time the option is granted) of stock with  respect to which  incentive
stock  options  are  exercisable  for the  first  time by an  employee  during a
calendar year can not exceed $100,000.

     Except as otherwise  provided in the option  agreement  between the Company
and the optionee,  each option expires on the date set forth in such  agreement.
The term of each  incentive  stock option cannot be more than ten years from the
date on which the option is granted.

     To the extent  required by  Internal  Revenue  Code  Section  422,  options
granted under the Stock Option Plan may not be transferred other than by will or
the laws of descent and  distribution  and may be exercised  during the holder's
lifetime  only  by the  holder.  However,  non-statutory  stock  options  can be
transferred  to a trust for the  benefit  of the  optionee,  or  members  of his
family.

Amendment and Termination

     The Board may at any time revise,  amend,  suspend or  terminate  the Stock
Option Plan.  No  amendment  shall,  without the  approval of the  shareholders,
change the number of shares for which  incentive  stock  options  may be granted
under the Stock Option Plan, reduce the price per share at which incentive stock
options may be offered under the Stock Option Plan below 100% of the fair market
value on the date of grant, or modify the eligibility requirements for the class
of employees eligible to receive incentive stock options.

Tax Withholding

     Optionees  are  required to pay the Company  cash for the amount of the tax
liability incurred by the optionee in connection with the exercise of his or her
option.  However,  the Board may in its sole  discretion  permit an  optionee to
reimburse the Company for such tax  liability by the actual or imputed  delivery
to the Company of shares of its Common Stock.

Federal Income Tax Consequences

     The principal tax consequences of the grant and exercise of incentive stock
options and non-statutory  stock options under current provisions of the federal
income tax laws may be summarized as follows:

     Incentive  Stock Options.  The grant of an incentive  stock option does not
produce taxable income for the employee or a tax deduction for the Company. Upon
exercise of an incentive  stock  option,  the excess of the fair market value of
the shares  acquired over the amount paid by the employee for the shares will be
an  item  of tax  preference  to the  employee,  which  may  be  subject  to the
alternative  minimum tax for the taxable year of exercise.  If no disposition of
the stock is made within two years from the date of grant of the incentive stock
option nor within one year after the transfer of the shares to the employee, the
employee  will not  realize  ordinary  income  as a result of the  exercise  and
subsequent sale of the incentive stock option.  Any gain or loss realized on the
ultimate  sale of the shares  must be  reported  by the  employee  as  long-term
capital gain or loss.  The Company is not entitled to any  deduction as a result
of the exercise of the incentive stock option.
<PAGE>

     If the  employee  disposes  of the shares  within the  two-year or one-year
periods  referred to above, the excess of the fair market value of the shares at
the time of exercise (or the proceeds of  disposition,  if less) over the amount
paid by the employee for the shares will at that time be taxable to the employee
as ordinary income.  The same amount will be deductible by the Company,  subject
to the general rules relating to the reasonableness of compensation.  The excess
(if any) of the proceeds of disposition over the fair market value of the shares
on the date of exercise must be reported by the employee as a long-term  capital
gain if the  shares  have been held for more than one year,  or as a  short-term
capital  gain if the shares  have been held for one year or less.  If no gain is
realized,  there will be no ordinary  income and any loss will be  long-term  or
short-term capital loss.

         Non-Statutory Stock Options.  The grant of a non-statutory stock option
under the Stock Option Plan does not produce  taxable income for the optionee or
a tax deduction for the Company.  Except as described below,  upon exercise of a
non-statutory  stock  option,  the excess of the fair market value of the shares
acquired over the amount paid by the optionee will be taxable to the optionee as
ordinary income.

     The Company  will be entitled to a deduction  for income tax purposes in an
amount equal to the ordinary income taxable to the optionee in the year in which
such ordinary income is recognized. Any additional profit or loss realized by an
optionee  on  disposition  of the shares will not result in any  additional  tax
deduction to the Company.

     Similar  rules apply if the Company  permits the exercise of an  "unvested"
option with the issued stock being subject to certain repurchase rights or other
substantial risks of forfeiture.

     Using Stock to Exercise  Options.  Special  rules apply if an optionee uses
already  owned stock of the Company to pay all or part of the exercise  price of
an incentive or  non-statutory  stock option.  The use of already owned stock to
pay all or part of the exercise price of a non-statutory stock option permits an
optionee  to defer the date when the gain on the  surrendered  shares  which are
used to pay the exercise  price of the option is  recognized  for tax  purposes.
That is, using  already  owned shares to exercise a  non-statutory  stock option
permits an optionee to finance the exercise of the option without paying current
tax on the unrealized appreciation in value of the surrendered shares. An option
exercise  using  already  owned stock is treated as a "tax-free  exchange"  with
respect to that number of shares  received on the option  exercise  which equals
the number of shares  surrendered.  The optionee's  basis in these shares is the
same as his or her basis in the shares surrendered, and the capital gain holding
period  on such  shares  runs  without  interruption  from  the  date  when  the
surrendered shares were acquired. Any additional shares received by the optionee
on the exercise will trigger  ordinary  income taxation equal to the fair market
value of the additional  shares over the  consideration  paid by the optionee in
connection with the exercise.  The optionee's basis in the additional  shares is
equal to their fair market value on the date the shares were  received,  and the
capital gain holding  period on such shares  commences on that date.  Similarly,
the use of  previously  owned stock to pay the  exercise  price of an  incentive
stock  option  permits  an  employee  to defer  tax  recognition  of gain on the
surrendered  shares.  However,  if an employee  pays all or part of the exercise
price of an incentive stock option by surrendering stock previously  acquired in
the exercise of any other incentive  stock option and such  previously  acquired
stock has not been held for the statutory holding period,  then the surrender of
such  stock  to  exercise  the  incentive  stock  option  will be  treated  as a
disqualifying  disposition  of the prior  incentive  stock  option  with the tax
consequences  described above.  Furthermore,  complex tax rules apply concerning
the use of shares to exercise an incentive stock option,  especially with regard
to an employee's basis in the shares received on the exercise.

Accounting Treatment

     Under the present  financial  accounting  rules,  neither the grant nor the
exercise of options  issued to employees at fair market value will result in any
charge to the  Company's  earnings.  However,  the  Company  will be required to
calculate  the fair value of all option grants at the time of grant and disclose
such value on a pro-forma  basis. The grant of options with exercise prices less
than the fair  market  value of the shares at the time of grant will result in a
compensation expense equal to the discount from market at the time of grant. The
Company will have to report such expense pro rata as the shares  underlying  the
option become  exercisable.  Accordingly,  the grant of discounted options under
the Stock  Option  Plan would  result in a charge to reported  earnings.  In all
events,  the number of dilutive options  outstanding under the Stock Option Plan
will be a factor in determining the Company's reported earnings per share.

Required Vote

     Approval by the holders of a majority of the shares of the Existing  Common
Stock  represented  and  voting at the  Meeting  on this  matter  (which  shares
constitute  at least a  majority  of the  required  quorum for the  Meeting)  is
required for the adoption of this proposal. For purposes of calculating the vote
necessary for approval, abstentions and non-votes are not counted.

     The Board recommends that you vote FOR the approval of this proposal, which
is set forth as Item 3 on the Proxy Card.

<PAGE>


                          PROPOSAL 4 - AMENDMENT OF THE
           AGOURON PHARMACEUTICALS, INC. EMPLOYEE STOCK PURCHASE PLAN


     Description of the Employee Stock Purchase Plan

     The essential  features of the Restated  Employee  Stock Purchase Plan (the
"ESPP") are outlined  below.  For a complete  understanding  of the terms of the
ESPP,  see  Annex  VII,  which  reflects  amendments  that  will  be made if the
Divisional Stock Proposal and this Proposal 4 are approved by the shareholders.

         As of August __, 1998, a total of ______  shares of Common Stock remain
available for purchase  under the ESPP.  Any  full-time  employee is eligible to
participate  in the ESPP after he or she has been  continuously  employed by the
Company for three consecutive months. Eligible employees may elect to contribute
up to 15% of their total  compensation  during each offering period,  subject to
certain  statutory  limits.  Additionally,  each  employee  is only  entitled to
purchase up to a maximum of 3,000 shares of Common Stock during any one year. On
the last day of the offering  period or such other  date(s)  during the offering
period  which the Board has chosen  prior to the  commencement  of the  offering
period  (Purchase  Date) the Company  will apply the amount  contributed  by the
participant to purchase whole shares of Common Stock. Shares of Common Stock are
purchased  for  eighty-five  percent (85%) of the lower of the fair market value
per share of Common  Stock on (i) the first day of the  offering  period or (ii)
the Purchase Date. All expenses  incurred in connection with the  implementation
and administration of the ESPP are paid by the Company. The ESPP is administered
by the Board; provided,  however, that the Board may delegate all or any part of
its authority to administer  the ESPP.  Termination of employment for any reason
shall be treated as an automatic withdrawal by the participant from the ESPP.

         The Board has the right to amend,  suspend or terminate the ESPP at any
time  and  without  notice;  provided,  no  participant's  existing  rights  are
adversely  affected  thereby  and except  that any  amendment  to  increase  the
aggregate number of shares available under the ESPP shall be subject to approval
by a vote of the shareholders of the Company.

         On August 6, 1998,  the Board  adopted an amendment to the ESPP subject
to the approval of the Company's  shareholders to increase by 200,000 shares the
aggregate  number of shares available for purchase under the ESPP. The Board has
also approved,  in connection with and subject to approval and implementation of
the  Divisional  Stock  Proposal,  the amendment and  restatement of the ESPP to
conform the ESPP to the changes in the Company's capital structure being made by
the  Divisional   Stock  Proposal.   See  "Proposal   2--The   Divisional  Stock
Proposal--Amendment of Stock Plans."


Certain Federal Income Tax Information

     The ESPP, and the right of  participants to make purchases  thereunder,  is
intended to qualify under the provisions of Sections 421 and 423 of the Internal
Revenue Code. Under these provisions, no income will be taxable to a participant
at the time of grant of the option or purchase of shares.  Upon  disposition  of
the shares, the participant will generally be subject to tax. If the shares have
been held by the  participant for more than two years after the first day of the
offering  period and more than one year after the  purchase  date of the shares,
the lesser of (a) the excess of the fair market  value of the shares at the time
of such disposition over the purchase price of the shares subject to option,  or
(b) the  excess of the fair  market  value of the shares on the first day of the
offering  period over the deemed purchase price of the shares subject to option,
will be treated as ordinary  income,  and any further gain upon such disposition
will be treated  as capital  gain.  If the  shares  are  disposed  of before the
expiration of the holding periods described above, the excess of the fair market
value of the  shares on the date of  purchase  over the  purchase  price will be
treated as ordinary  income,  and any further  gain or loss on such  disposition
will be  capital  gain or loss.  Different  rules  may  apply  with  respect  to
optionee's  subject to Section 16(b) of the Securities  Exchange Act of 1934, as
amended.  The Company is not  entitled to a deduction  for amounts  taxable to a
participant,  except to the extent of ordinary  income  reported by participants
upon  disposition  of shares  prior to the  expiration  of the  holding  periods
described above.

     The  foregoing is only a summary of the United  States  federal  income tax
consequences of the ESPP to participants and the Company and does not purport to
be  complete.  Reference  should  be made to the  applicable  provisions  of the
Internal Revenue Code. In addition,  the summary does not discuss the income tax
consequences  of  a   participant's   death  or  the  income  tax  laws  of  any
municipality, state or foreign country in which the participant may reside.


<PAGE>




Required Vote

     Approval by the holders of a majority of the shares of the Company's Common
Stock  represented  and  voting at the  Meeting  on this  matter  (which  shares
constitute  at least a  majority  of the  required  quorum for the  Meeting)  is
required for the adoption of this proposal. For purposes of calculating the vote
necessary for approval, abstentions and non-votes are not counted.

     The Board recommends that you vote FOR the approval of this proposal, which
is set forth as Item 4 on the Proxy Card.



<PAGE>




                                   PROPOSAL 5
              RATIFICATION OF SELECTION OF INDEPENDENT ACCOUNTANTS

     The  Board  has  selected  the  firm  of   PricewaterhouseCoopers   LLP  as
independent  accountants  for the  Company  for the fiscal  year ending June 30,
1999, it being intended that such selection  would be proposed for  ratification
by the affirmative vote of a majority of the shares of the Existing Common Stock
represented and voting at the Meeting on this matter (which shares constitute at
least a majority  of the  required  quorum for the  Meeting).  For  purposes  of
calculating the vote necessary for  ratification of the selection of independent
accountants,  abstentions and non-votes are not counted.  One or more members of
PricewaterhouseCoopers LLP are expected to be present at the Meeting and will be
available to respond to questions and make a statement if they desire to do so.

     The Board recommends that you vote FOR the ratification of the selection of
PricewaterhouseCoopers LLP, which is set forth as Item 5 on the Proxy Card.





<PAGE>
         SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT

     The  following  table sets  forth  information  as of  September  __,  1998
relating to the  beneficial  ownership of the Existing  Common Stock by (i) each
person known by the Company to beneficially  own more than 5% of the outstanding
shares of the Company's  Common  Stock,  (ii) each  director,  (iii) each of the
executive  officers named in the Summary  Compensation Table below, and (iv) all
executive officers and directors as a group.
<TABLE>
<CAPTION>
                                                                                 Beneficial Ownership(1)


                                                                      Number of                Percentage of
     Beneficial Owner                                                 Shares(9)                   Total
<S>                                                                   <C>                               <C>

     Wellington Management Co.                                         3,500,000                        11.25%
         75 State Street
         Boston, MA 02109
     Peter Johnson(2)                                                    706,533                         2.23%
     Gary E. Friedman(2) Family Trust(8)                                 294,123                         *
     John N. Abelson(2)(3)(6)                                            102,943                         *
     Patricia M. Cloherty(2)                                              27,659                         *
     A. E. Cohen(2)                                                       73,333                         *
     Michael E. Herman(2)(4)                                              83,333                         *
     Irving S. Johnson(2)                                                 41,933                         *
     Antonie T. Knoppers(2)                                               51,533                         *
     Melvin I. Simon(2)(3) and Linda F. Simon Living Trust(5)            122,843                         *
     Marvin R. Brown                                                     194,995                         *
     Barry D. Quart                                                      152,481                         *
     R. Kent Snyder(7)                                                   175,035                         *

All executive officers and directors as a group (19 persons)           6,206,671                        18.78%
</TABLE>


*    less than 1%.

(1)  Unless otherwise  indicated,  the persons named in the above table exercise
     sole voting and investment  powers with respect to all shares  beneficially
     owned by them, subject to applicable community property laws. The number of
     shares  beneficially owned includes the following number of shares issuable
     upon exercise of stock options  exercisable within 60 days of September 22,
     1998: Mr.  Johnson,  596,923 shares;  Mr.  Friedman,  241,599  shares;  Dr.
     Abelson,  33,333 shares;  Ms. Cloherty,  13,333 shares;  Mr. Cohen,  43,333
     shares;  Mr. Herman,   39,333  shares;  Dr.  Johnson,  15,833  shares;  Dr.
     Knoppers,  43,333  shares;  Dr. Simon,  33,333  shares;  Dr. Brown,  23,077
     shares;  Dr. Quart  117,266  shares;  Mr.  Snyder,168,932  shares;  and all
     executive officers and directors as a group, 1,952,280 shares.

(2) Director.

(3)  Does not include 1,106,000 shares held by The Agouron  Institute,  of which
     Drs. Abelson and Simon are directors.  As directors,  they share voting and
     investment powers as to the shares held by The Agouron Institute.

(4)  Includes 20,000 shares held by the Herman Family Trading Company,  a family
     partnership of which Mr. Herman is the general partner,  10,000 shares held
     by Vail  Fishing  Partners in which Mr.  Herman has a 50%  general  partner
     interest  and  2,000  shares  held  by Mrs.  Herman,  of  which  Mr.EHerman
     disclaims any beneficial ownership.

(5)  Shared voting and investment power.

(6)  Includes  2,350  shares  held by Dr.  Abelson  as  custodian  for his minor
     children, of which Dr. Abelson disclaims any beneficial ownership.

(7)  Includes 800 shares held by immediate  family members,  of which Mr. Snyder
     disclaims any beneficial ownership.

(8)  Includes 5,408 shares held by wife as custodian for minor children of which
     Mr. Friedman disclaims any beneficial ownership.

(9)  Adjusted  to reflect  the  two-for-one  stock  split in the form of a stock
     dividend in August 1997.




<PAGE>



                             EXECUTIVE COMPENSATION

Compensation of Directors

    Non-employee members of the Board receive cash compensation in the amount of
$250 per Board meeting for their services as Board members, and are eligible for
reimbursement  of their  expenses  incurred  to  attend  each  such  meeting  in
accordance   with  Company  policy.   In  addition  to  meeting  fees,   certain
non-employee   directors  received  consulting  fees  during  fiscal  1998.  For
scientific consultation, Dr. Abelson received $30,040; Dr. Knoppers, $6,000; Dr.
Johnson,  $18,750 and Dr. Simon,  $26,900. For special  consultation  concerning
corporate development issues, Mr. Cohen received $18,250 and Mr. Herman received
$750.

Compensation of Executive Officers

     The following table sets forth the aggregate  compensation  paid or accrued
by the Company to the Chief Executive  Officer and to the four other most highly
compensated  executive officers whose annual compensation  exceeded $100,000 for
the  fiscal  year  ended  June  30,  1998  (collectively  the  "named  executive
officers")  for service  during the fiscal years ended June 30,  1998,  1997 and
1996:

                           Summary Compensation Table

<TABLE>
<CAPTION>
                                                                                    Long-Term
                                                                                  Compensation
        Name                              Annual Compensation                        Awards(2)
     Principal                                                                        Stock             All Other
     Position                     Year        Salary(1)         Bonus                Options          Compensation(3)
<S>                              <C>         <C>              <C>                    <C>                 <C>

Peter Johnson                    1998        $395,000         $230,000                40,000             $2,998
President and Chief              1997         330,000          165,000               100,000              2,250
Executive Officer                1996         285,000          100,000               180,000              1,647

Marvin R. Brown(4)               1998         230,000           65,000                10,000              2,400
Vice President,                  1997          23,523                0                     0
President of Alanex              1996            --                 --                    --

Gary E. Friedman                 1998         212,500           100,000               17,000             11,232
Corporate Vice President,        1997         195,000            70,000               26,000              2,250
General Counsel                  1996         175,500            50,000               50,000              1,589

Barry D. Quart(5)                1998         230,000           125,000               21,000              2,713
Senior Vice President,           1997         180,000           115,500(5)            44,000              2,953
Regulatory Affairs               1996         165,000            70,500(5)            72,000             16,587

R. Kent Snyder(5)                1998         230,000           150,000               21,000              3,050
Senior Vice President,           1997         200,000           102,000(5)            44,000              2,250
Commercial Affairs               1996         178,500            62,200(5)            64,000              1,777

</TABLE>


(1)  Includes  amounts deferred out of compensation  under the Company's  401(k)
     Plan otherwise  payable in cash during each fiscal year.
(2)  The Company has made no restricted stock awards,  has not granted any stock
     appreciation rights and has no other long-term incentive plans.
(3)  (a) During  1998,  the  Company  made  matching  contributions  to the
         Company's 401(k) Plan in the following  amounts:  Mr. Johnson,  $2,998;
         Dr. Brown, $2,400; Mr. Friedman, $3,063; Dr. Quart, $2,713; and Mr.
         Snyder $3,050.
     (b) During 1997, the Company made matching  contributions to the Company's
         401(k) Plan in the following  amounts:  Mr. Johnson, $2,250;
         Mr. Friedman $2,250; Dr. Quart, $2,953; and Mr. Snyder, $2,250.
     (c) During 1996, the Company made matching  contributions  to the Company's
         401(k)  Plan  in  the  following  amounts:  Mr.  Johnson,  $1,647;  Mr.
         Friedman, $1,589; Dr. Quart, $1,959; and Mr. Snyder, $1,777.
     (d) During 1996, the Company  reimbursed Dr. Quart for relocation  costs in
         the amount of $14,628.  
     (e) During 1998, Mr.  Friedman sold accrued but unused vacation back to the
         Company in the amount of $8,169.
(4)  Dr. Brown joined the Company as of 5/24/97 with the  acquisition  of Alanex
     Corporation.
(5)  For  Dr.  Quart  and  Mr.  Snyder,  a  portion  of  the  bonus  amount  was
     subsequently used to partially repay their outstanding relocation loans.
     These loans were paid in full on June 30, 1997.


<PAGE>



     The  following  table  sets  forth  certain  information  with  respect  to
individual  grants of stock  options  made during the fiscal year ended June 30,
1998, to each of the named executive officers:

                          Option Grants in Fiscal 1998

<TABLE>
<CAPTION>
                                                                                     Potential Realizable Value at
                                                                                       Assumed Annual Rates of
                                                                                       Stock Price Appreciation
       Individual Grants                                                                 for Option Term(2)_
                                            % of Total
                                              Options
                                            Granted to
                                             Employees
                                 Options     in Fiscal     Exercise    Expiration
    Name                        Granted(1)     Year         Price        Date             5%                10%
- ------------                   ------------------------   ---------  -----------     -----------      ---------
<S>                            <C>             <C>        <C>            <C>             <C>          <C>

Peter Johnson                  30,145#         2.70%      $30.4375       6/29/08         $577,035     $1,462,320
                                9,855*         0.88        30.4375       6/29/08          188,644        478,061



Marvin R. Brown                   145#         0.01        30.4375       6/29/08            2,776          7,034
                                9,855*         0.88        30.4375       6/29/08          188,644        478,061



Gary E. Friedman                7,145#         0.64        30.4375       6/29/08          136,769        346,601
                                9,855*         0.88        30.4375       6/29/08          188,644        478,061



Barry D. Quart                 11,145#         1.00        30.4375       6/29/08          213,337        540,639
                                9,855*         0.88        30.4375       6/29/08          188,644        478,061


R. Kent Snyder                 11,145#         1.00        30.4375       6/29/08          213,337        540,639
                                9,855*         0.88        30.4375       6/29/08          188,644        478,061

</TABLE>





(1)  During  fiscal 1998,  the Agouron  Stock Option Plan ("Plan") for executive
     officers and directors was administered by the Board. The Board, based upon
     the recommendation of the Directors Compensation Committee,  determines the
     number  of  shares  to be  granted  and the  term of  such  grants  to each
     executive  officer and  director.  The options  granted in fiscal 1998 were
     either incentive stock options(*) or non-statutory  stock options(#),  have
     exercise prices equal to the fair market values on the date of grant,  vest
     over a period of three  years and have a term of ten  years.  Upon  certain
     corporate  events  as  defined  in the Plan  which  result  in a change  of
     control,  the exercise date of all  outstanding  options for all employees,
     including executive officers, may be accelerated. The Plan also permits the
     Company to assist an  employee  in using a  so-called  "cashless"  exercise
     procedure to pay the option exercise price.

(2)  Potential  realizable  value is based on an assumption that the stock price
     of the  Common  Stock  appreciates  at the annual  rate  shown  (compounded
     annually) from the date of grant until the end of the ten year option term.
     These numbers are calculated based on the  requirements  promulgated by the
     Securities  and  Exchange  Commission  and do  not  reflect  the  Company's
     estimate of future stock price  growth.  Any such growth would  benefit all
     shareholders.



<PAGE>



     The  following  table sets forth certain  information  with respect to each
exercise of stock options during the fiscal year ended June 30, 1998, by each of
the named  executive  officers and the number and value of  unexercised  options
held by such named executive officers as of June 30, 1998:

                         Option Exercises in Fiscal 1998
                      And Value of Options at June 30, 1998

<TABLE>
<CAPTION>
                                                             Number of Unexercised          Value of Unexercised
                                                                  Options at              In-the-Money Options at
                           Shares                              June 30, 1998(2)              June 30, 1998(1)
                                                          --------------------------    ---------------------
                         Acquired on         Value
      Name                 Exercise        Realized       Exercisable  Unexercisable     Exercisable  Unexercisable
<S>                       <C>            <C>               <C>           <C>           <C>             <C>

Peter Johnson             125,000        $5,692,095        596,923       205,767       $ 11,290,804    $ 1,312,900

Marvin R. Brown             2,500            85,744         17,845        17,325            538,428        221,014

Gary E. Friedman            1,000            24,188        241,599        61,001          4,988,364        348,337

Barry D. Quart             32,000(2)      1,233,037        133,266        89,334          1,982,900        513,000

R. Kent Snyder             12,500           406,045        168,932        81,668          2,983,727        392,673

</TABLE>


(1)   Value  calculated as market value of Company stock on June 30, 1998, minus
      exercise price multiplied by the number of shares
(2)   Adjusted  to reflect  the  two-for-one  stock split in the form of a stock
      dividend in August 1997.



<PAGE>



Compensation Committee Report on Executive Compensation(1)

Overview and Philosophy

     The Directors Compensation Committee (the "Committee") is composed entirely
of  outside   directors   and  is   responsible   for   developing   and  making
recommendations   to  the  Board  with  respect  to  the   Company's   executive
compensation  policies and practices,  including the establishment of the annual
total compensation for the chief executive officer (the "CEO") and all executive
officers.  The Committee has available to it an outside compensation  consultant
and  access to  independent  compensation  data.  The Board is  responsible  for
approving and implementing the  compensation  recommendations  of the Committee.
The  recommendations  made by the  Committee  to the Board have  generally  been
approved without any significant modification.

     The  objectives  of the  Company's  executive  compensation  program are to
attract,  retain  and  motivate  highly  qualified  executive  personnel.  These
objectives  are  satisfied  through  the  use of  three  principal  compensation
elements: base salary, cash bonus payments and stock options.

Base Salary

     Base salary  levels for the Company's  executive  officers are based on the
concept  of pay  for  performance  and are  competitively  set  relative  to the
compensation of other executives in the biotechnology industry. Extensive salary
survey data is  available on the industry  (notably,  the annual  "Biotechnology
Compensation and Benefits Survey" conducted by Radford  Associates and Alexander
& Alexander  Consulting  Group) and is utilized by the Committee in establishing
annual base salaries. In determining base salaries, the Committee also considers
corporate  performance  and progress in the immediately  preceding  fiscal year,
individual experience and performance, specific issues which are relevant to the
Company  and  general  economic  conditions.  The base salary of the CEO and all
other executive officers is reviewed annually. During fiscal year 1998, the base
salaries paid to the executive officers other than the CEO approximated the 75th
percentile of the above-noted industry survey data.

Bonus Payments

     Annual cash bonus payments are  discretionary.  Bonus payments,  if any, to
executive  officers,  including  the CEO,  are based on two  principal  factors:
corporate  performance as compared to the Company's  annual goals and objectives
and  individual  performance  relative to corporate  performance  and individual
goals and objectives.

     Bonus payments in 1998 were generally in recognition of the satisfaction of
several  significant   corporate  objectives  during  the  year,  including  the
establishment  of  the  Company's  first  product,   VIRACEPT(R)   (nelfinavir
mesylate)  as  the  market  leader  among  all  HIV  protease  inhibitors,   the
in-licensing  of three  development  stage compounds to supplement the Company's
internal R&D pipeline, the continued preclinical and clinical development of the
Company's  cancer and anti-viral  agents and the satisfaction of all significant
financial targets for fiscal 1998.

     Bonus payment recommendations for executive officers other than the CEO are
initiated by the CEO and submitted to the  Committee  for review and  subsequent
submission to the Board. Bonus payment recommendations for the CEO are initiated
by the Committee and submitted to the Board.

     Total  base  salary  and  any  bonus   payments   are  compared  to  "total
compensation" of peers as reported by the previously noted industry survey. Such
total  compensation for the executive officers of the Company is at or above the
averages of such data,  which reflects the Committee's  belief that the relative
levels of corporate performance during the period were also above average.


(1)  The material in this report is not soliciting material, is not deemed filed
     with the SEC,  and is not  incorporated  by  reference in any filing of the
     Company  under  the  Securities  Act of 1933  (the  "Securities  Act"),  as
     amended,  or the Securities  Exchange Act of 1934 (the "Exchange  Act"), as
     amended,  whether made before or after the date of this Proxy Statement and
     irrespective of any general incorporation language in such filing.

Stock Options

     To conserve its cash  resources,  the Company  places  special  emphasis on
equity-based  incentives to attract,  retain and motivate  executive officers as
well as other  employees.  Under the Company's  stock option  plans,  grants are
generally  priced at the fair  market  value on the date of  grant,  vest over a
period of three or four years and have a term of ten years.

<PAGE>



Grants are made to all employees on their date of hire based on salary level and
position.  All  employees,   including  executive  officers,  are  eligible  for
subsequent,  discretionary grants which are generally based on either individual
or corporate performance. It is the Committee's intent that the interests of the
Company's shareholders and the executive officers be closely aligned through the
use of stock options.  Option grants  recommended by the Committee are submitted
to the Board for approval.  Based on recent  peer-company proxy data compiled by
the  Company,  the level of  option  grants to each  executive  officer  in 1998
remains  competitive,  and the resultant  total option  position as a percent of
total shares outstanding represents approximately the 70th to 90th percentile of
such positions.

Chief Executive Officer Compensation

     During 1998, Mr.  Johnson's base salary of $395,000 was based on individual
and corporate performance,  and approximated the average of the updated industry
data for base salaries of CEOs.

     During 1998,  Mr. Johnson was awarded a bonus of $230,000 in recognition of
the  satisfaction of several  significant  corporate  objectives,  including the
establishment  of  VIRACEPT(R)  as the number one HIV protease  inhibitor in the
United States with product sales in the United States of $358 million for fiscal
1998.   The  Committee   believes  that  Mr.  Johnson  has  made  a  significant
contribution during 1998 in enhancing shareholder value and establishing a sound
base for the continued  enhancement of shareholder  value through his managerial
and entrepreneurial efforts.

     The stock options awarded to Mr. Johnson during fiscal 1998 are competitive
and consistent  with the purpose of the stock option plans.  The resultant total
option   position  as  a  percent  of  total   shares   outstanding   represents
approximately the 75th percentile for peer CEO positions.

Executive Compensation Deduction Limitations

     In 1993, Section 162(m) of the Internal Revenue Code ("Section 162(m)") was
enacted which  disallows the  deductibility  by the Company of any  compensation
over $1 million  per year paid to each of the chief  executive  officer  and the
four  other  most  highly  compensated   executive   officers,   unless  certain
performance-based   compensation  criteria  are  satisfied.   While  it  is  the
Committee's firm belief and intent that  compensation  from base salary and cash
bonus  payments will not approach the annual  Section  162(m)  limitation in the
foreseeable future, additional "compensation" from the exercise of option grants
pursuant  to the  Company's  stock  option  plans  could  result  in the  annual
limitation being exceeded. Accordingly, the Company's 1990 and 1996 Stock Option
Plans contain certain provisions which exempt  compensation  resulting from such
option exercises from the $1 million limitation.  The Committee will continue to
monitor all forms of compensation  to its executive  officers to ensure that the
Company may maximize the tax benefits of such compensation.

Directors Compensation Committee

     Michael E. Herman, Chairman
     John N. Abelson, Ph.D.
     A. E. Cohen




<PAGE>



Directors Compensation Committee Interlocks and Insider Participation

     The  Directors  Compensation  Committee  is composed  exclusively  of three
outside  directors:  Mr. Herman,  Mr. Cohen and Dr. Abelson.  The Company is not
aware of any Committee interlocks.


Performance Measurement Comparison(1)

The chart set forth below shows the value of an  investment  of $100 on June 30,
1993  in the  Existing  Common  Stock,  The  Nasdaq  Stock  Market  Index  (U.S.
Companies) ("Nasdaq Market (US)") and the Nasdaq  Pharmaceuticals Index ("Nasdaq
Pharmaceuticals").  The total  returns  assume the  reinvestment  of  dividends,
although cash dividends have not been declared on the Existing Common Stock. The
Existing Common Stock is traded on The Nasdaq Stock Market and is a component of
both  the  Nasdaq  Market  (US)  and  the  Nasdaq   Pharmaceuticals  Index.  The
comparisons in the chart are required by the Securities and Exchange  Commission
and  are  not  intended  to  forecast  or be an  indicator  of  possible  future
performance of the Company's Common Stock.

[OBJECT OMITTED]
- -------------

(1)   This section is not  "soliciting  material,"  is not deemed filed with the
      Securities  and  Exchange  Commission  and is not  to be  incorporated  by
      reference  in any filing of the Company  under the  Securities  Act or the
      Exchange Act.


<PAGE>



                              CERTAIN TRANSACTIONS

         All  transactions  with affiliates have been and will continue to be on
terms no less favorable to the Company than could be obtained from  unaffiliated
parties.  Furthermore, all transactions with affiliates and any loans to Company
officers,  affiliates  or  shareholders  must be  approved  by a majority of the
disinterested directors.

     As permitted by California law, the articles of incorporation and bylaws of
the Company  currently  provide for the  limitation  of director  liability  for
monetary  damages for breach of duty to the Company and for  indemnification  of
agents (including officers and directors) to the full extent permitted under the
California   General   Corporations   Law.   The  Company   has   entered   into
Indemnification Agreements with all of its directors and officers. Additionally,
the Company has in effect a directors and officers  liability  insurance  policy
which insures  directors  and officers of the Company  against loss arising from
claims made against them due to wrongful  acts while acting in their  individual
and collective capacities as directors and officers.

                       SUBMISSION OF SHAREHOLDER PROPOSALS

         To be considered  for inclusion in the  Company's  proxy  statement and
form of  proxy  for its 1999  Annual  Meeting  of  Shareholders,  a  shareholder
proposal must be received at the principal  executive offices of the Company not
later than  _______.  In order for business,  other than a shareholder  proposal
included in the  Company's  proxy  statement  and form of proxy,  to be properly
brought before the 1999 Annual Meeting by a shareholder,  the  shareholder  must
notify the  Secretary  of the  Company in  writing  at the  principal  executive
offices  of  the  Company  no  later  than  ________.  It  is  recommended  that
shareholders  submitting  proposals  direct them to the Secretary of the Company
and utilize Certified Mail-Return Receipt Requested.

                                  LEGAL MATTERS

        Certain  legal  matters  with  respect to the  validity  of the  Agouron
Pharmaceuticals  Stock and the Oncology  Division  Stock and with respect to the
matters set forth under  "Proposal  2--The  Divisional  Stock  Proposal--Certain
Federal  Income  Tax  Considerations"  will be passed  upon for the  Company  by
Pillsbury Madison & Sutro LLP, San Diego, California.

                                     EXPERTS

     The  financial  statements as of June 30, 1998 and 1997 and for each of the
three  years  in  the  period  ended  June  30,  1998  included  in  this  Proxy
Statement/Prospectus   and  the  financial   statements   incorporated  in  this
Prospectus and Proxy by reference to the Annual Report on Form 10-K for the year
ended June 30, 1998 have been so included  and  incorporated  in reliance on the
report of  PricewaterhouseCoopers  LLP,  independent  accountants,  given on the
authority of said firm as experts in auditing and accounting.

                                  OTHER MATTERS

     The Company's  Annual Report to Shareholders for the fiscal year ended June
30, 1998 accompanies this Proxy Statement.

     Section 16(a) of the Securities Exchange Act of 1934 requires the Company's
executive  officers  and  directors,  and  persons  who own  more  than 10% of a
registered  class  of the  Company's  equity  securities,  to  file  reports  of
ownership and changes in ownership with the  Securities and Exchange  Commission
and The Nasdaq Stock Market. Executive officers,  directors and greater than 10%
shareholders  are required by Securities and Exchange  Commission  regulation to
furnish the Company  with  copies of all  Section  16(a) forms they file.  Based
solely on review  of the  copies of such  forms  furnished  to the  Company,  or
written  representations  that no Forms 5 were  required,  the Company  believes
that,  during the applicable  reporting period ending June 30, 1998, all Section
16(a) filing requirements  applicable to its executive  officers,  directors and
greater than 10% beneficial owners were satisfied.

     The  Company's  Board does not know of any other matters to be presented at
the Meeting. However, if any other business is properly presented at the Meeting
for action, the persons named in the enclosed form of Proxy will vote such Proxy
according to their best judgment on such matters.

BY ORDER OF THE BOARD OF DIRECTORS
Gary E. Friedman, Secretary
September __, 1998


<PAGE>



                                   ANNEX INDEX

Annex I - Index of Defined Terms...............................................

Annex II - Proposed Restated Articles of Incorporation.........................
          (To be filed by amendment)

Annex III - Agouron Pharmaceuticals, Inc.......................................
            Management's Discussion and Analysis...............................
            Consolidated Financial Statements..................................

Annex IV - Agouron Pharmaceuticals
           Description of Business.............................................
           Management's Discussion and Analysis................................
           Financial Statements of Agouron Pharmaceuticals

Annex V - Agouron Oncology Division............................................
          Description of Business..............................................
          Management's Discussion and Analysis.................................
          Financial Statements of Agouron Oncology Division....................

Annex VI - Amended and Restated 1996 Stock Option Plan.........................

Annex VII - Amended and Restated Employee Stock Purchase Plan..................
















<PAGE>

                                     ANNEX I

                             Index of Defined Terms

1985 Plan......................................................................
1990 Plan......................................................................
1998 Plan......................................................................
Acquiring Person...............................................................
Agouron Pharmaceuticals Stock..................................................
Agouron Pharmaceuticals........................................................
Agouron Pharmaceuticals Available Dividend Amount..............................
Agouron Stock Right............................................................
Articles of Incorporation......................................................
Available Dividend Amount......................................................
Board..........................................................................
California Corporations Code...................................................
ChaseMellon....................................................................
Code...........................................................................
Commercial Product or Service..................................................
Commission.....................................................................
Common Stock...................................................................
Common Stock Right.............................................................
Company........................................................................
Convertible Securities.........................................................
Designated Shares..............................................................
Distribution Date..............................................................
Division.......................................................................
Divisional Stock Proposal......................................................
Effective Date.................................................................
Equity Line....................................................................
ESPP...........................................................................
Exchange Act...................................................................
Existing Certificates..........................................................
Existing Common Stock..........................................................
Fair Market Value..............................................................
FDA............................................................................
GART...........................................................................
GMP............................................................................
GnRH...........................................................................
HMOs...........................................................................
Interdivision Transactions.....................................................
IRS............................................................................
Key Oncology Division Program..................................................

<PAGE>



Meeting........................................................................
Merger Right...................................................................
MMPs...........................................................................
Nasdaq Market (US).............................................................
Nasdaq National Market.........................................................
Nasdaq Pharmaceuticals.........................................................
Oncology Division Stock........................................................
Oncology Division Designated Shares............................................
Oncology Division Available Dividend Amount....................................
Oncology Stock Right...........................................................
Other Property.................................................................
PaineWebber....................................................................
PARP...........................................................................
Participating Preferred Stock..................................................
Permitted Offer................................................................
Plan...........................................................................
Pre-Effectiveness Convertible Securities.......................................
Preferred Stock................................................................
PricewaterhouseCoopers LLP.....................................................
Proxy Statement................................................................
Purchase Date..................................................................
Purchasing Division............................................................
Reclassification...............................................................
Record Date....................................................................
Redemption Price...............................................................
Registration Statement.........................................................
Restated Articles of Incorporation.............................................
Restated Rights Agreement......................................................
Rights.........................................................................
Rights Agent...................................................................
Rights Agreement...............................................................
Securities Act.................................................................
Selling Division...............................................................
Series B Shares................................................................
Series C Shares................................................................
Series B Participating Preferred Stock.........................................
Series C Participating Preferred Stock.........................................
Shareholder Rights Plan........................................................
Stock Option Plan..............................................................
Stock Plans....................................................................
Subscription Right.............................................................
TIN............................................................................
VEGF...........................................................................
Voting Stock...................................................................
<PAGE>

                                   ANNEX III

        MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND
                             RESULTS OF OPERATIONS

Overview

     This discussion contains  forward-looking  statements.  Such statements are
subject to certain risks and  uncertainties  which could cause actual results to
differ  materially  from those  projected.  See "Risk Factors - Risks related to
Agouron   Pharmaceuticals   Division  and   Oncology   Division"  in  the  Proxy
Statement/Prospectus to which this Annex III is attached.  Readers are cautioned
not to place undue reliance on these forward-looking statements which speak only
as of the date hereof.  The Company undertakes no obligation to publicly release
the result of any  revisions to these  forward-looking  statements  which may be
made to reflect events or circumstances  after the date hereof or to reflect the
occurrence of unanticipated events.

     Agouron   Pharmaceuticals,   Inc.  (the  "Company")  is  committed  to  the
discovery,  development,  manufacturing  and marketing of human  pharmaceuticals
targeting cancer, AIDS, and other serious diseases. Operations to date have been
principally funded from the Company's  equity-derived  working capital,  various
collaborative   arrangements   and,  most   recently,   from  the  gross  margin
contribution of its first product,  VIRACEPT(R)  (nelfinavir mesylate).  The net
income  reported in fiscal 1998 is principally due to the  commercialization  of
VIRACEPT while the Company's  prior net operating  losses reflect  primarily the
result of its independent  research and  substantial  investment in the clinical
and commercial development of VIRACEPT and certain anti-cancer compounds.

     In March 1997, the Company  received  clearance from the United States Food
and Drug Administration ("FDA") to market VIRACEPT in the United States. For the
fiscal year ended June 30,  1998,  due  principally  to the  increasing  product
contribution  from  VIRACEPT  sales,  license  fees and  royalties,  the Company
realized a net income of $13,154,000.

Results of Operations

Product sales

     Product  sales  for the  fiscal  years  ended  June 30,  1997 and 1998 were
approximately  $57,000,000 and  $409,300,000  which included sales in the United
States of $55,559,000 and $358,321,000,  respectively.  The Company  anticipates
that  VIRACEPT  sales in the United  States  will  approximate  $430,000,000  to
$440,000,000 for fiscal 1999.

Contract revenues

     Collaborative  research and development  agreements with Japan Tobacco Inc.
("JT"), Hoffmann-La Roche Inc. and F. Hoffmann-La Roche Ltd (collectively "HLR")
accounted for  substantially  all of the Company's  contract  revenues for 1998,
1997 and 1996. Total contract revenues for 1998 decreased approximately 40% from
1997 due principally to decreased  VIRACEPT program  spending by Agouron,  which
was partially funded by JT. Additionally,  the amortization to revenue over a 24
month period of JT's $24,000,000 milestone payment, which was received in August
1995, was completed in June 1997. The increase in contract revenues

<PAGE>


from 1996 to 1997 of approximately  59% was due principally to increased program
activity and spending on the JT collaborations.

     In December 1997, the Company agreed to end its  collaboration  with HLR in
the field of  cancer.  As a result of the  termination  agreement,  Agouron  has
regained all rights to its anti-cancer  drugs previously within the scope of the
HLR collaboration.

     The  Company  anticipates  that  contract  revenues  for  fiscal  1999 will
approximate $35,000,000 to $40,000,000.

License fees and royalties

     The Company's license fees and royalties for 1998 and 1997 were principally
derived  from F.  Hoffmann-La  Roche Ltd  ("Roche");  license  fees in 1996 were
earned from HLR. Total revenues for 1998 increased  approximately  83% from 1997
due to European marketing  approval for VIRACEPT.  The 33% decrease from 1996 to
1997 is principally due to $9,000,000 for initial European  marketing rights for
VIRACEPT in 1997 versus  $15,000,000 for initial  world-wide  development rights
for two anti-cancer drugs in 1996.

     In January and March 1998,  VIRACEPT was  approved for  marketing in Europe
and Japan,  respectively.  Upon such approvals,  the Company realized as revenue
license  fees  totaling  $12,000,000.  In July 1997,  the Company and JT granted
Roche certain exclusive rights to VIRACEPT in several Asian countries.  For such
rights, the Company received a license fee of $2,000,000.

     Royalty revenues of  approximately  $3,852,000 have been recognized in 1998
based on estimated and actual Roche sales of VIRACEPT in its licensed territory.
The Company  anticipates  that license fees and  royalties  for fiscal 1999 will
range from $30,000,000 to $35,000,000.

Cost of product sales

     The  aggregate  cost of product  sales as a percentage of product sales was
approximately  43% and 42% for 1997 and 1998,  respectively.  Gross  margins  on
United States  commercial sales were  approximately  57% and 65% during 1997 and
1998, respectively.  The Company anticipates that gross margins on United States
commercial  sales will  improve as product  sales  volumes  increase and certain
manufacturing process and scale efficiencies are realized,  and will approximate
71% in 1999.  Aggregate  gross  margins will also be impacted by the size of the
Company's  patient  assistance  program  (which  provides free goods to indigent
individuals), the Company's manufacturing supply arrangement with Roche (whereby
Roche  has  the  right  to  either  purchase  product  at  Agouron's  cost  plus
contractually  determined  mark-ups or manufacture drug product for its own use,
subject to contractually determined fees to be paid to Agouron) and the level of
sales subject to Medicaid and other discounts or rebates in the United States.



<PAGE>


Research and development

     Research and development  ("R&D") spending  increased by approximately  39%
from 1997 to 1998 due to license fees for three  development stage HIV products,
increasing  average  R&D  staff  levels  (approximately  28%) and  staff-related
spending  (including  occupancy  and the addition of Alanex since late 1997) and
increased  expenditures for human clinical trial activities  associated with the
clinical  development  of certain of the Company's  anti-cancer  compounds.  R&D
spending  increased  by  approximately  52% from 1996 to 1997 due  generally  to
increasing  average  R&D  staff  levels  (approximately  39%) and  staff-related
expenditures  (including occupancy),  increased expenditures in support of human
clinical  trials,  an expanded  access  program  associated  with  VIRACEPT  and
increased  expenditures for clinical trial activities associated with AG3340 and
other anti-cancer compounds.  The Company anticipates that total R&D expenses in
fiscal 1999,  excluding the impact of any license fees or milestone  expenses in
either 1998 or 1999, will exceed fiscal 1998 expenses by approximately 40%.

Selling, general and administrative

     Selling,   general  and   administrative   ("SG&A")  expenses   represented
approximately  28% of total  operating  expenses  (excluding the cost of product
sales,  royalties and write-off of in-process technology purchased) in 1998, 23%
in 1997 and 10% in 1996. SG&A increased by  approximately  76% from 1997 to 1998
due  principally to a full year of expenses  associated with the sales force and
other marketing personnel. Spending increases from 1996 to 1997 were due chiefly
to increasing staff levels (approximately 214%) and staff-related  expenditures,
certain  premarketing  and advertising  and promotion costs  associated with the
launch of VIRACEPT in March 1997 and other costs associated with a growing sales
and marketing  infrastructure.  The Company anticipates that total SG&A expenses
will increase by  approximately  40% in fiscal 1999 due to increasing  sales and
marketing activities and the support of VIRACEPT phase IV marketing studies.

Royalties

     The Company's  obligation to share VIRACEPT profits with JT is reflected in
royalty  expense  for 1998 and  represents  approximately  19% of United  States
product sales. Royalties in fiscal 1997 were not significant.  It is anticipated
that  royalty  expense  for fiscal  1999 will  approximate  24% to 25% of United
States product sales.

Write-off of in-process technology purchased

     In 1997, the Company  acquired  Alanex,  a research  company engaged in the
discovery of drug leads  through the  high-speed  screening of diverse  chemical
libraries  designed by  computational  methods and  generated  by  combinatorial
chemistry. Alanex was acquired in a purchase transaction through the issuance of
approximately  1,992,000  equivalent shares  (including  548,000 for options and
warrants) of the  Company's  common stock valued at  approximately  $61,000,000,
plus $1,300,000 of related  acquisition  costs. The purchase price was allocated
to various tangible and intangible assets and either capitalized  (approximately
$4,800,000) or expensed  (approximately  $57,500,000)  as in-process  technology
based on an

<PAGE>


independent valuation of the Alanex assets, technology and research programs
at the date of acquisition.

Interest and other income

     Interest  income  increased  by 1%  from  1997  to  1998.  Interest  income
increased by  approximately  23% from 1996 to 1997 due  principally  to a higher
average  investment  portfolio  balance  resulting  from  the July  1996  public
offering, receipt of $15,000,000 and $9,000,000,  respectively,  in license fees
from HLR (June 1996) and Roche (January 1997),  significantly increased contract
funding from JT and HLR and the exercise of employee stock options.  The Company
anticipates that, absent additional  revenue sources or a significant  change in
interest  rates,  fiscal 1999  interest  income will be less than that of fiscal
1998.

Interest expense

     Interest expense increased in 1998 from 1997 due to borrowings under a line
of credit  which  was used to  partially  fund  quarterly  royalties  paid to JT
throughout  the  year.   Interest  expense   decreased  in  1997  from  1996  by
approximately  38%  due  to  a  decreasing  level  of  debt  and  capital  lease
obligations from year to year.

Income tax provision (benefit)

     The income tax  provision  in 1998 has been  computed  using an  effective,
combined  federal  and  state  rate of 40%.  The cash  obligation  of such  1998
provision has been mostly offset by the  utilization of its deferred tax assets.
Based on its 1998 pre-tax  profit and its estimates for future  taxable  income,
the Company  believes it is more  likely than not that its  deferred  tax assets
(comprised mostly of net operating loss carryforwards,  deductions  generated by
the exercise of stock options,  and research  credits) will be realized and has,
therefore,  recorded  the full tax  benefit  of its  deferred  tax  assets.  The
Company's accumulated net deferred tax assets totaled approximately  $55,900,000
and  $64,100,000  at June 30, 1997 and 1998.  The Company  anticipates  that its
effective  income  tax rate for fiscal  1999 will  range  from 10% to 15%.  Such
decrease from fiscal 1998 is attributed to greater expected  availability of R&D
tax credits due to the anticipated  increase in R&D spending and the anticipated
reduction in R&D contract revenues.

Year 2000

     The Year 2000 issue  results from  computer  programs and systems that were
created  to  accept  only  two  digit  dates.  Such  systems  may not be able to
distinguish  20th century  dates from 21st century  dates.  This could result in
miscalculations  and system  failures.  The Company has  established a Year 2000
project  team  that  is  currently   reviewing  computer  systems  and  computer
controlled  equipment that could be affected by this issue. In this process, the
Company  expects to both  replace and  upgrade  certain  systems and  equipment.
Additionally, the Company is in the process of contacting all of its significant
external  business  partners  to  determine  the extent to which the  Company is
vulnerable to their failure to obtain Year 2000 compliance. While the total cost
of  obtaining  Year 2000  compliance  is not  known at this  time,  the  Company
believes such cost will not have a material  effect on the  Company's  business,
financial position, or results

<PAGE>


of operation.  However, even though the Company plans to have obtained Year 2000
compliance  prior to the year 2000, the inability of the Company or its business
partners to adequately  address year 2000 issues could have a significant impact
on the Company's business.

Liquidity and Capital Resources

     Prior to fiscal 1998, the Company relied  principally on equity  financings
and corporate collaborations to fund its operations and capital expenditures. In
fiscal 1998,  due  primarily to the  successful  commercialization  of VIRACEPT,
operating  activities  have  provided  $827,000  of  cash  compared  with  using
$73,467,000  in fiscal  1997.  Commercial  sales of  VIRACEPT  for 1997 and 1998
resulted in gross margins of approximately $32,370,000 and $236,654,000.

     At June 30,  1998,  the Company had net  working  capital of  approximately
$127,728,000,  an  increase  of  $11,942,000  over  June  30,  1997  levels  due
principally to the Company's pre-tax profit of $21,924,000.  Individual  working
capital components  significantly  impacted by the commercialization of VIRACEPT
include trade accounts receivable (an increase of $18,416,000),  inventories (an
increase of  $44,906,000),  accounts  payable (an increase of  $15,560,000)  and
accrued  liabilities  (an  increase  of  $26,467,000,  primarily  due to accrued
royalties  payable  to  JT).  It  is  anticipated  that  these  working  capital
components and cash and short-term investments will continue to be significantly
impacted as VIRACEPT  sales  increase.  At June 30, 1998,  the Company had cash,
cash equivalents and short-term  investments of approximately  $87,123,000.  The
Company  believes  that its  current  capital  resources,  existing  contractual
commitments and anticipated  VIRACEPT product sales  contribution are sufficient
to maintain its current  operations through fiscal 1999. This belief is based on
current research and clinical  development  plans,  anticipated  working capital
requirements  associated with the expanding  commercialization of VIRACEPT,  the
current  regulatory   environment,   historical   industry   experience  in  the
development of therapeutic drugs and general economic conditions.

     The Company believes that additional  financing may be required to meet the
planned operating needs after fiscal 1999 if significant and increasing positive
cash flows are not  generated  from  commercial  activities.  Such  needs  would
include the expenditure of substantial funds to continue and expand research and
development  activities,  conduct existing and planned  preclinical  studies and
human clinical trials and to support the increasing working capital requirements
of a  growing  commercial  infrastructure  including  manufacturing,  sales  and
marketing  capabilities.  As a result, the Company anticipates  pursuing various
financing alternatives such as collaborative  arrangements and additional public
offerings or private  placements of  securities.  If such  alternatives  are not
available,  the Company may be required to defer or restrict certain  commercial
activities,  delay  or  eliminate  expenditures  for  certain  of its  potential
products  under  development,  cancel  licenses from third parties or to license
third parties to commercialize  products or technologies  that the Company would
otherwise seek to develop or commercialize itself.

     During fiscal 1998, capital  expenditures totaled $33,086,000 compared with
$14,727,000 and $3,710,000 during 1997 and 1996, of which $1,579,000, $2,355,000
and $457,000  were financed  through  capital  lease  obligations.  Of the total
capital  expenditures  during 1998,  1997 and 1996,  approximately  $14,331,000,
$4,728,000 and $318,000 represented  leasehold improvement costs associated with
certain  of the  Company's  facilities.  With  the  exception  of the  leasehold
improvement costs,  virtually all of the capital  expenditures during 1998, 1997
and 1996

<PAGE>


represented  laboratory  and office  equipment  and  scientific  instrumentation
necessary  to  support  an  expanding  research,   development,  and  commercial
infrastructure.   Capital   expenditures   during   1999  are   expected  to  be
approximately  $18,000,000  to  support  continued  product   commercialization,
development and research activities.  Of the total expected capital expenditures
during  1999,   approximately   $4,000,000  is  associated  with  the  leasehold
improvement  of existing  and  anticipated  new  administrative  and  laboratory
facilities.  The  Company  may  utilize  lease  or debt  financing  for  certain
expenditures if available on acceptable terms.


<PAGE>


FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA

INDEX TO FINANCIAL STATEMENTS AND SCHEDULES


Report of Independent Accountants

Consolidated Balance Sheet as of June 30, 1998 and 1997

Consolidated Statement of Income (Loss) for the years ended
           June 30, 1998, 1997 and 1996

Consolidated Statement of Stockholders' Equity for the
           years ended June 30, 1998, 1997 and 1996

Consolidated Statement of Cash Flows for the years ended
           June 30, 1998, 1997 and 1996

Notes to Consolidated Financial Statements

NOTE:         All schedules are omitted because they are not applicable,
              or not required,  or because the required
              information is included in the consolidated
              financial statements or notes thereto.


<PAGE>



REPORT OF INDEPENDENT ACCOUNTANTS


To the Board of Directors and Stockholders of Agouron Pharmaceuticals, Inc.

In our opinion,  the  accompanying  consolidated  balance  sheet and the related
consolidated  statements of income (loss),  of stockholders'  equity and of cash
flows  present  fairly,  in all material  respects,  the  financial  position of
Agouron  Pharmaceuticals,  Inc. and its  subsidiaries at June 30, 1998 and 1997,
and the results of their  operations  and their cash flows for each of the three
years in the period ended June 30, 1998, in conformity  with generally  accepted
accounting principles.  These financial statements are the responsibility of the
Company's  management;  our  responsibility  is to  express  an opinion on these
financial  statements  based on our  audits.  We  conducted  our audits of these
statements  in accordance  with  generally  accepted  auditing  standards  which
require that we plan and perform an audit to obtain  reasonable  assurance about
whether the financial  statements  are free of material  misstatement.  An audit
includes  examining,  on a test  basis,  evidence  supporting  the  amounts  and
disclosures in the financial  statements,  assessing the  accounting  principles
used and  significant  estimates made by management,  and evaluating the overall
financial  statement  presentation.   We  believe  that  our  audits  provide  a
reasonable basis for the opinion expressed above.



/s/ PricewaterhouseCoopers, LLP

San Diego, California
July 16, 1998






<PAGE>


AGOURON PHARMACEUTICALS, INC.

CONSOLIDATED BALANCE SHEET
(Dollars in thousands)

<TABLE>
<CAPTION>

                                                                                           June 30,
                                                                                      1998              1997
ASSETS
<S>                                                                             <C>              <C>

Current assets:
       Cash and cash equivalents                                                $   19,098       $    52,484
       Short-term investments                                                       68,025            38,833
       Accounts receivable, net                                                     51,341            31,375
       Inventories                                                                 103,706            58,800
       Current deferred tax assets                                                     564               500
       Other current assets                                                          5,247             2,209
                                                                                ----------       -----------

       Total current assets                                                        247,981           184,201

Property and equipment, net                                                         47,212            22,613

Deferred tax assets                                                                 64,644            56,000

Purchased intangibles                                                                3,500             4,100
                                                                                ----------       -----------

                                                                                $  363,337       $   266,914
                                                                                ==========       ===========

LIABILITIES AND STOCKHOLDERS' EQUITY

Current liabilities:
       Accounts payable                                                         $   44,393       $    28,833
       Accrued liabilities                                                          35,356             8,889
       Deferred revenue and advances                                                23,563            27,567
       Current deferred tax liabilities                                              1,139               600
       Loan payable and current portion of long-term debt                           15,802             2,526
                                                                                ----------       -----------

       Total current liabilities                                                   120,253            68,415
                                                                                ----------       -----------

Long-term liabilities:
       Long-term debt, less current portion                                          5,892             5,940
       Accrued rent                                                                  1,023             1,277
                                                                                ----------       -----------

       Total long-term liabilities                                                   6,915             7,217
                                                                                ----------       -----------

Stockholders' equity:
       Common stock, no par value, 75,000,000 shares authorized,
           31,053,380 and 29,429,920 shares issued and outstanding                 348,482           317,133
       Unrealized gains (losses) on short-term investments                             384                 0
       Accumulated deficit                                                        (112,697)         (125,851)
                                                                                ----------       -----------

       Total stockholders' equity                                                  236,169           191,282
                                                                                ----------       -----------

Commitments
                                                                                $  363,337       $   266,914
                                                                                ==========       ===========
</TABLE>

See accompanying notes to consolidated financial statements.


<PAGE>


AGOURON PHARMACEUTICALS, INC.

CONSOLIDATED STATEMENT OF INCOME (LOSS) (In thousands, except per share amounts)
<TABLE>
<CAPTION>

                                                                          Years ended June 30,
                                                                       1998           1997            1996
<S>                                                           <C>            <C>             <C>

Revenues:
     Product sales                                            $     409,298  $      56,969   $           0
     Contracts                                                       38,855         65,094          40,955
     License fees and royalties                                      18,352         10,000          15,000
                                                              -------------  -------------   -------------

                                                                    466,505        132,063          55,955
                                                              -------------  -------------   -------------
Operating expenses:
     Cost of product sales                                          172,644         24,599               0
     Research and development                                       150,657        108,137          71,010
     Selling, general and administrative                             58,012         32,941           8,082
     Royalties                                                       68,423              0               0
     Write-off of in-process technology purchased                         0         57,500               0
                                                              -------------  -------------   -------------

                                                                    449,736        223,177          79,092
                                                              -------------  -------------   -------------

Operating income (loss)                                              16,769        (91,114)        (23,137)
                                                              -------------  -------------   -------------

Other income (expenses):
     Interest and other income                                        5,907          5,873           4,776
     Interest expense                                                  (752)          (142)           (228)
                                                              -------------  -------------   -------------

                                                                      5,155          5,731           4,548
                                                              -------------  -------------   -------------

Income (loss) before income taxes                                    21,924        (85,383)        (18,589)

Income tax provision (benefit)                                        8,770        (42,577)            934
                                                              -------------  -------------   -------------

Net income (loss)                                             $      13,154  $     (42,806)  $     (19,523)
                                                              =============  =============   =============

Earnings per share:
     Basic                                                    $         .43  $       (1.59)  $        (.99)
                                                              =============  =============   =============
     Diluted                                                  $         .40  $       (1.59)  $        (.99)
                                                              =============  ==============  =============

Shares used in calculation of:
     Basic                                                           30,571         26,946          19,688
     Diluted                                                         33,214         26,946          19,688


</TABLE>



See accompanying notes to consolidated financial statements.




<PAGE>


AGOURON PHARMACEUTICALS, INC.

CONSOLIDATED STATEMENT OF STOCKHOLDERS' EQUITY
(Dollars in thousands)
<TABLE>
<CAPTION>


                                                                       Unrealized
                                                                          gains
                                                                       (losses) on
                                                 Common Stock          short-term     Accumulated
                                             Shares         Amount     investments        Deficit          Total
<S>                                      <C>           <C>            <C>             <C>            <C>

Balance at June 30, 1995                 14,718,564    $    76,113     $         0    $   (63,522)   $    12,591

   Stock issuances:
     Public sale                          6,000,000         78,579                             --         78,579
     Exercise of stock options              586,412          2,990                             --          2,990
     Exercise of stock warrants              90,000            283                             --            283
     Employee stock purchase plan            68,398            663                             --            663
   Net loss                                      --             --                        (19,523)       (19,523)
                                        -----------    -----------     -----------    -----------    -----------

Balance at June 30, 1996                 21,463,374        158,628               0        (83,045)        75,583

   Stock issuances:
     Public sale                          5,470,000         77,245                             --         77,245
     Acquisition of Alanex                1,444,236         61,051                             --         61,051
     Exercise of stock options              980,472          6,720                             --          6,720
     Employee stock purchase plan            71,838          1,389                             --          1,389
   Tax benefit of stock options exercised              --              12,100                        --
12,100
   Net loss                                      --             --                        (42,806)       (42,806)
                                        -----------    -----------     -----------    -----------    -----------

Balance at June 30, 1997                 29,429,920        317,133               0       (125,851)       191,282

Stock issuances:
     Exercise of stock options            1,344,104         11,031                             --         11,031
     Exercise of stock warrants             169,522            680                             --            680
     Employee stock purchase plan           109,834          2,742                             --          2,742
   Tax benefit of stock options exercised              --              16,896                        --
16,896
   Change in unrealized gains (losses) on
     short-term investments                                                    384                           384
   Net income                                    --             --                         13,154         13,154
                                        -----------    -----------     -----------    -----------    -----------

Balance at June 30, 1998                 31,053,380    $   348,482     $       384    $  (112,697)   $   236,169
                                        ===========    ===========     ===========    ===========    ===========


</TABLE>

See accompanying notes to consolidated financial statements.



<PAGE>


AGOURON PHARMACEUTICALS, INC.

CONSOLIDATED STATEMENT OF CASH FLOWS
(In thousands)
<TABLE>
<CAPTION>

                                                                                   Years ended June 30,
                                                                              1998           1997           1996
<S>                                                                   <C>            <C>            <C>

Cash flows from operating activities:
     Cash received from product sales, contracts and licenses          $   442,484    $   116,692    $    61,376
     Cash paid to suppliers, employees and service providers              (446,863)      (195,890)       (73,738)
     Interest received                                                       5,958          5,873          4,776
     Interest paid                                                            (752)          (142)          (228)
                                                                       -----------    -----------    -----------

     Net cash provided (used) by operating activities                          827        (73,467)        (7,814)
                                                                       -----------    -----------    -----------

Cash flows from investing activities:
     Proceeds from maturities/sales of short-term investments              147,292        127,501         59,686
     Purchases of short-term investments                                  (176,100)       (91,227)      (118,224)
     Purchase of  property and equipment                                   (31,507)       (12,372)        (3,252)
     Cost to acquire Alanex, net of cash acquired                                0            608              0
                                                                       -----------    -----------    -----------

     Net cash provided (used) by investing activities                      (60,315)        24,510        (61,790)
                                                                       -----------    -----------    -----------

Cash flows from financing activities:
     Net proceeds from issuance of common stock                             14,453         85,354         82,515
     Proceeds from credit line                                              53,600              0              0
     Principal payments on credit line, long-term debt,
       and capital leases                                                  (41,951)          (364)          (818)
                                                                       -----------    -----------    -----------

     Net cash provided (used) by financing activities                       26,102         84,990         81,697
                                                                       -----------    -----------    -----------

Net increase (decrease) in cash and cash equivalents                       (33,386)        36,033         12,093
Cash and cash equivalents at beginning of year                              52,484         16,451          4,358
                                                                       -----------    -----------    -----------

Cash and cash equivalents at end of year                               $    19,098    $    52,484    $    16,451
                                                                       ===========    ===========    ===========

Reconciliation  of net income  (loss) to net cash  provided  (used) by operating
  activities:
     Net income (loss)                                                 $    13,154    $   (42,806)   $   (19,523)
     Depreciation and amortization                                           9,087          3,910          2,411
     Write-off of in-process technology purchased                                0         57,500              0
     Provision (benefit) for deferred income taxes                           8,727        (43,800)             0
     Net (increase) decrease in inventories                                (44,906)       (58,547)             0
     Net (increase) decrease in accounts receivable and other
       current assets                                                      (23,004)       (28,209)        (1,198)
     Net increase (decrease) in accounts payable, accrued
       liabilities, deferred revenue and advances, and other liabilities    37,769         38,485         10,496
                                                                        ----------     ----------    -----------

Net cash provided (used) by operating activities                       $       827    $   (73,467)   $    (7,814)
                                                                       ===========    ===========    ===========
</TABLE>

See accompanying notes to consolidated financial statements.


<PAGE>


AGOURON PHARMACEUTICALS, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS


Note 1 - The Company and its significant accounting policies

The Company

Agouron  Pharmaceuticals,  Inc.  ("Agouron" or the  "Company") was organized and
incorporated in California in June 1984. Agouron is an integrated pharmaceutical
company committed to the discovery, development,  manufacturing and marketing of
innovative therapeutic products engineered to inactivate proteins which play key
roles in cancer, AIDS and other serious diseases.  The Company,  through its own
sales and marketing  organization,  is currently  marketing in the United States
its  first  drug,  VIRACEPT(R)   (nelfinavir  mesylate)  for  treatment  of  HIV
infection.  The Company is also conducting  pivotal phase II/III clinical trials
for AG3340 for treatment of lung and prostate  cancer.  In addition,  Agouron is
expected  to  initiate  a phase  II/III  pivotal  clinical  trial of  REMUNE(TM)
(AG1661),  an immune-based  therapeutic agent for treatment of HIV infection and
AIDS being co-developed by Agouron and The Immune Response  Corporation ("IRC").
Further,  the Company has a number of programs  in  progress  for  discovery  or
development of other new drugs in the fields of cancer,  viral disease and other
serious diseases.  The Company is also using the proprietary core drug discovery
technology of Alanex Corporation  ("Alanex"),  a wholly-owned  subsidiary of the
Company,  to  accelerate  the steps  necessary to discover  small-molecule  drug
candidates,  from the initial  identification of compounds that exhibit activity
against  selected  biological  targets to the  progression of these compounds to
drug candidates for human clinical trials.

Principles of consolidation

     The consolidated  financial  statements include the accounts of the Company
and its wholly-owned  subsidiaries.  All significant  intercompany  accounts and
transactions have been eliminated.

Estimates

     The  preparation  of financial  statements  in  conformity  with  generally
accepted  accounting  principles  requires  management  to  make  estimates  and
assumptions  that affect the reported amounts of assets,  liabilities,  revenues
and expenses and related disclosures as of the date of the financial statements.
Actual results could differ from such estimates.

Cash and cash equivalents

     The Company  considers cash equivalents to be only those  investments which
are highly liquid,  readily  convertible to cash and which mature within 90 days
from date of purchase.



<PAGE>


Short-term investments

     Short-term  investments  consist  principally  of  government or government
agency securities,  corporate notes and bonds, commercial paper and certificates
of deposit with original maturities of three to thirty-six months, and corporate
equity  securities.  The Company has classified  its  short-term  investments as
available-for-sale. Included in short-term investments at June 30, 1998 and 1997
is $1,262,000 and $588,000 of accrued interest receivable.

Inventories

     Inventories  are stated at the lower of cost or market.  Cost is determined
using the first-in, first-out method.

Concentration of credit and market risk

     The Company  invests its excess cash  principally in marketable  securities
from a diversified  portfolio of institutions with strong credit ratings and, by
policy,  limits  the amount of credit  exposure  at any one  institution.  These
investments  are generally not  collateralized  and primarily  mature within one
year. The Company has not realized any material losses from such  investments in
1998, 1997 or 1996.

Financial instruments and risk management

     The  Company  has  contract  manufacturing  operations  in Europe and Asia.
Accordingly,  the Company from  time-to-time  enters into  forward  contracts to
manage its exposure to fluctuations in foreign currency  exchange rates. At June
30, 1998, the Company had several forward contracts with maturities of less than
six  months  to  purchase  Japanese  Yen  for  approximately  $9,426,000.  These
contracts are  designated  and effective as hedges and,  accordingly,  gains and
losses are  recognized  in the same  period the  offsetting  gains and losses of
hedged transactions are realized and recognized.

Property and equipment

     Property and equipment is recorded at cost.  Depreciation is computed using
principally  the  straight-line  method over estimated  useful lives of three to
five years. Leasehold improvements are amortized over the life of the lease.

Purchased intangibles

     In  conjunction  with the 1997  acquisition  of  Alanex,  the  Company  has
recorded purchased intangibles (primarily drug discovery technology and chemical
compound  libraries)  which are being  amortized on a  straight-line  basis over
their estimated useful lives of seven years.

Deferred revenue and advances

     Approximately  $22,414,000 of cash received from JT has been  classified as
deferred  contract revenue and advances.  Approximately  $21,452,000 of the cash
received from JT represents JT's

<PAGE>


advance of the  Company's  VIRACEPT  development  funding  obligation  which was
completed  in March  1998.  Such  amounts are to be repaid by the Company out of
future profits, if any, generated by sales of VIRACEPT in the United States. The
balance of the payments from JT are  non-refundable  and are being recognized as
contract  revenue on a  prospective  basis  generally as  collaborative  program
expenses are incurred.

Product sales

     The Company ships VIRACEPT to wholesalers  throughout the United States and
recognizes  sales  revenue upon  shipment.  Sales are reported net of discounts,
rebates, chargebacks and product returns.

     Also  included  in  product  sales  for 1998  and  1997  are  approximately
$50,979,000  and  $1,441,000  of sales  (at cost plus  contractually  determined
mark-ups) to Roche of clinical and commercial  drug supplies to be used by Roche
in its licensed territory.  The Company receives a royalty on Roche's subsequent
commercial sales of such drug supplies.

Contract revenues

     Contract revenues are earned and recognized  generally as contract research
costs are incurred  according to the  provisions of each  underlying  agreement.
Amounts  received in advance of  performance  are recorded as deferred  revenue.
Contract  milestone  payments are  recognized as revenues upon the completion of
the milestone event or requirement.

License fees and royalties

     License fees are  recognized as revenue when earned as generally  evidenced
by  certain  factors  including:  receipt  of  such  fees,  satisfaction  of any
performance obligations and the non-refundable nature of such fees.

     Royalty  revenues are  recognized  based on  estimated  and actual sales of
licensed products in licensed territories.

Research and development costs

     Research and development costs are expensed in the period incurred.

Income tax provision (benefit)

     The  Company  records a  provision  (benefit)  for income  taxes  using the
liability method.  Current income tax expense (benefit)  generally is the amount
of income taxes expected to be payable for the current year.  Deferred taxes are
recorded by applying  applicable tax rates to cumulative  temporary  differences
based on when and how they are expected to affect the tax return.



<PAGE>


Earnings (loss) per share

     The Company  computes  earnings per share in accordance  with  Statement of
Financial  Accounting  Standards  No. 128 "Earnings Per Share".  Basic  earnings
(loss)  per share is based upon the  weighted  average  number of common  shares
outstanding during a period. Diluted earnings (loss) per share is based upon the
weighted  average number of common shares  outstanding and dilutive common stock
equivalents  during a period.  Common stock  equivalents  are options  under the
Company's  stock  option  plans  which are  included in the  earnings  per share
computation  under the treasury  stock method and common  shares  expected to be
issued under the Company's employee stock purchase plan.

     Common stock  equivalents of  approximately  2,643,000 shares for 1998 were
used to calculate  diluted earnings per share.  For 1997 and 1996,  common stock
equivalents  of  approximately  3,168,000 and 2,014,000  shares were not used to
calculate  diluted  earnings  (loss) per share  because  of their  anti-dilutive
effect.  There are no reconciling  items in calculating  the numerator for basic
and diluted earnings (loss) per share for any of the periods presented.

Stock-based compensation plans

     The Company measures compensation expense for its stock-based  compensation
plans using the  intrinsic  method and  provides  pro-forma  disclosures  of net
income and earnings (loss) per share as if the fair value-based  method had been
applied in measuring compensation expense.

Statement of cash flows

     For purposes of the Statement of Cash Flows,  cash  equivalents  are highly
liquid  investments  purchased with an original maturity of ninety days or less.
Non-cash financing and investing  activities are comprised  primarily of capital
lease obligations of $1,579,000, $2,355,000 and $457,000 for 1998, 1997 and 1996
and the acquisition of Alanex in 1997.

New accounting standards

     In June 1997, the Financial  Accounting  Standards  Board  ("FASB")  issued
Statement  of  Financial  Accounting  Standards  No. 130 ("FAS 130")  "Reporting
Comprehensive  Income,"  which  requires  additional  disclosures  to be adopted
beginning with the quarter ending September 30, 1998. Under FAS 130, the Company
will be required to display  comprehensive  income and its components as part of
the Company's complete set of financial statements.

     In June 1997, the FASB also issued FAS 131,  "Disclosures about Segments of
an Enterprise and Related Information," which requires additional disclosures to
be adopted on June 30, 1999. FAS 131 requires that the Company report  financial
and descriptive information about its reportable operating segments. The Company
is evaluating the impact on its disclosures, if any.



<PAGE>


Note 2 -  Short-term investments

     The cost of the  Company's  investment  portfolio  by type of security  and
contractual maturity in the balance sheet is as follows:
<TABLE>
<CAPTION>

                                                                                    June 30,
                                                                                1998                1997
              (Dollars in thousands)
<S>                                                                    <C>                <C>

              Type of security:
                  Corporate debt                                       $      46,023      $       24,401
                  U.S. Treasury and agencies                                  10,766              11,994
                  Other interest-bearing                                       9,462               2,438
                  Corporate equity                                             1,774                   0
                                                                       -------------      --------------

                                                                       $      68,025      $       38,833
                                                                       =============      ==============

              Contractual maturity:
                  Maturing in less than twelve months                  $      41,389      $       35,827
                  Maturing between twelve and
                      thirty-two months                                       26,636               3,006
                                                                       -------------      --------------

                                                                       $      68,025      $       38,833
                                                                       =============      ==============
</TABLE>

     The  cost  of  securities   sold,  if  any,  is  based  upon  the  specific
identification  method.  The net unrealized  holding gain on  available-for-sale
securities included as a separate component of stockholders'  equity at June 30,
1998 totaled $384,000. There were no material unrealized gains or losses nor any
material  differences  between the estimated fair values and costs of securities
in the investment  portfolio at June 30, 1997.  Realized gains and losses on the
disposal  of  available-for-sale  securities  during  1998  totaled  $20,000 and
$2,000,  respectively.  During  1997 such gains and losses  totaled  $12,000 and
$4,000, respectively. During 1996, such gains totaled $22,000.



<PAGE>


Note 3 - Composition of certain financial statement captions
<TABLE>
<CAPTION>

                                                                                         June 30,
                                                                                      1998            1997
(Dollars in thousands)
<S>                                                                             <C>            <C>

Accounts receivable, net:
     Trade                                                                      $   44,471     $    26,055
     Contract                                                                        2,451           4,668
     Royalties                                                                       2,339               0
     Employee                                                                          252             269
     Other                                                                           1,828             383
                                                                                ----------     -----------

                                                                                $   51,341     $    31,375
                                                                                ==========     ===========

Inventories:
     Raw materials and work in process                                          $   95,517     $    57,883
     Finished goods                                                                  8,189             917
                                                                                ----------     -----------

                                                                                $  103,706     $    58,800
                                                                                ==========     ===========

Property and equipment, net:
     Scientific instrumentation                                                 $   26,869     $    16,614
     Leasehold improvements                                                         25,135          10,804
     Computer equipment                                                             15,619           8,892
     Furniture and fixtures                                                          3,910           2,464
                                                                                ----------     -----------

                                                                                    71,533          38,774
     Less accumulated depreciation and amortization                                (24,321)        (16,161)
                                                                                ----------     -----------

                                                                                $   47,212     $    22,613
                                                                                ==========     ===========

Accrued liabilities:
     Royalties                                                                  $   21,410     $         0
     License fees                                                                    6,000               0
     Vacation                                                                        2,955           1,932
     Clinical studies                                                                2,731           3,578
     Other                                                                           2,260           3,379
                                                                                ----------     -----------

                                                                                $   35,356     $     8,889
                                                                                ==========     ===========

</TABLE>

<PAGE>


Note 4 - Significant contract arrangements

Japan Tobacco Inc.

     In February 1994, the Company entered into a strategic  alliance with JT in
the  field of  anti-viral  drugs  for the  treatment  of  infections  caused  by
hepatitis C and the herpes  family of viruses.  In  December  1994,  the Company
added its anti-HIV drug, VIRACEPT, to the JT collaboration with the execution of
a world-wide  development and licensing agreement.  Agouron and JT share equally
the costs of further development of VIRACEPT.

     Currently,  Agouron has exclusive  commercial  rights to VIRACEPT (with the
right to sublicense) in North America and JT has exclusive  commercial rights to
VIRACEPT (with the right to  sublicense)  in parts of Japan.  The Company and JT
share profits and/or royalties equally from the world-wide  commercialization of
VIRACEPT.

     Under the  combined  terms of the JT  agreements,  the Company has incurred
costs of $51,898,000,  $71,825,000 and $46,969,000 and recognized  corresponding
contract  revenues of  $17,359,000,  $48,886,000  and  $37,197,000 for the years
ended June 30, 1998, 1997 and 1996.

Roche

     The Company and JT have granted Roche  certain  exclusive  royalty  bearing
marketing  rights to VIRACEPT  outside of North America and parts of Japan.  For
such  rights,  the Company has  received  (and  recognized  as revenue)  initial
license fees and  additional  product  approval  license fees.  The Company also
receives  royalties  based  either on Roche's  sales of VIRACEPT  or, in certain
circumstances,  Invirase(R) and Fortavase(R) (saquinavir),  Roche's HIV protease
inhibitors.  VIRACEPT license fees and royalties from Roche totaled  $17,852,000
and $9,000,000 for the years ended June 30, 1998 and 1997.

HLR

     In June 1996,  Agouron  granted HLR  world-wide  development  rights in two
anti-cancer   drugs  and  agreed  to  collaborate  with  HLR  on  an  additional
early-stage  anti-cancer drug discovery program.  In return for such rights, HLR
paid  $15,000,000  in  initial  license  fees and  agreed to bear 80% of certain
future  development  costs and to provide annual research support to the Company
of $3,000,000.  In December 1997, Agouron and HLR agreed to end this anti-cancer
research and development collaboration.  The Company has regained all commercial
rights  to  the   anti-cancer   drugs   previously   within  the  scope  of  the
collaboration.

     Under  the terms of the  anti-cancer  agreements  with HLR which  have been
terminated,  the Company  incurred  costs of  $23,486,000  and  $17,854,000  and
recognized  corresponding  contract  revenues of $15,428,000 and $14,270,000 for
the years ended June 30, 1998 and 1997.


<PAGE>



The Immune Response Corporation

     In June 1998, the Company  entered into a binding letter of intent with IRC
to  collaborate  on  final  development  and  commercialization  of  REMUNE,  an
immune-based  therapeutic  agent  discovered by IRC and currently the subject of
several  clinical  studies  including a large phase III clinical trial.  The two
companies intend to enter promptly into a definitive agreement and will endeavor
to complete development and registration of REMUNE in 1999. IRC will manufacture
commercial  supplies of REMUNE, and Agouron will have exclusive rights to market
REMUNE in North America,  Europe and certain other countries.  The two companies
will share  equally  all  profits  from the  commercialization  of REMUNE in the
licensed  territory.  Agouron paid an initial  $10,000,000 license fee to IRC in
June 1998 and also  purchased  118,256  newly  issued  common  shares of IRC for
$2,000,000.  The Company's  development funding obligation commences October 15,
1998 and, assuming ongoing successful development,  registration and approval of
REMUNE,  the Company may pay to IRC up to $53,000,000 in additional  development
and milestone  payments and  $12,000,000  in purchases of additional  IRC common
stock.

Shionogi & Co., Ltd.

     In June 1998,  the  Company  entered  into a binding  letter of intent with
Shionogi  & Co.,  Ltd.  ("Shionogi")  to develop  and  commercialize  AG1549,  a
second-generation  non-nucleoside reverse transcriptase  inhibitor ("NNRTI") for
the treatment of HIV infection.  Discovered by Shionogi, AG1549 is currently the
subject of several  clinical trials  evaluating its dose and its concomitant use
with other antiretroviral treatments.

     Agouron  has   exclusive   world-wide   rights  to  the   development   and
commercialization  of AG1549  except in Japan,  South Korea and Taiwan.  Agouron
paid an initial  $10,000,000 license fee in June 1998. Agouron may pay, assuming
ongoing successful development,  registration and approval of AG1549, additional
license  fees of up to  $30,000,000.  In  addition,  Agouron  will pay  Shionogi
royalties based on sales, if any, of AG1549.

Japan Energy Corporation

     In June 1998,  the Company  entered  into an  agreement  with Japan  Energy
Corporation  ("JE")  to  develop  and  commercialize  AG1776,  a novel  protease
inhibitor for the treatment of HIV infection.  Agouron has exclusive  world-wide
rights to the development and commercialization of AG1776 except in Japan, South
Korea,  North Korea and Taiwan;  JE will  manufacture  bulk  compound for use in
final drug product.  Agouron incurred an initial  $6,000,000 license fee in June
1998. Agouron may pay, assuming ongoing successful development, registration and
approval of AG1776,  additional license fees of up to $20,000,000.  In addition,
Agouron will pay JE royalties based on sales, if any, of AG1776.



<PAGE>


Note 5 - Long-term debt

     Long-term debt and capital lease obligations are as follows:
<TABLE>
<CAPTION>

                                                                                    June 30,
                                                                                  1998              1997
(Dollars in thousands)
<S>                                                                      <C>              <C>

Notes payable,  secured  with  personal  property and a  certificate  of deposit;
     interest at CD rate plus 1.5%,
     paid off in June 1998.                                              $           0    $          142

Capital leases with interest rates between 5.86% and 16.5%,
     maturing at various dates through June 2003.                                3,214             2,462

Line of credit, $20,000,000 secured; interest at bank reference
      rate or LIBOR plus 1.5%, expiring September 30, 1998.                     15,000                 0

Unsecured,  non-interest  bearing,  term  obligation;  face value of $4,500,000;
     discounted  to an  8.95%  effective  rate,  includes  imputed  interest  of
     $548,000
     due June 28, 2001.                                                          3,480             3,194

Term obligation for tenant improvements, interest
     at 11% per annum, payable in monthly installments,
     paid off in October 1997.                                                       0             2,668
                                                                         -------------    --------------

Total long-term debt and capital lease obligations                              21,694             8,466

Current portion                                                                (15,802)           (2,526)
                                                                         -------------    --------------

                                                                         $       5,892    $        5,940
                                                                         =============    ==============
</TABLE>

     Maturities of long-term debt,  excluding  capital  leases,  are as follows:
1999 - $15,000,000;  2000- $0; and 2001 - $4,500,000,  less imputed  interest of
$1,020,000.


<PAGE>


Note 6 - Income taxes

(Dollars in thousands)

     The components of the provision (benefit) for income taxes are as follows:
<TABLE>
<CAPTION>

                                                          1998         1997         1996
                                                     ---------    ---------     --------
<S>                                                  <C>         <C>            <C>

       Year ended June 30,
          Current:
              Federal                                $       0    $       0     $      0
              State                                         43            1            1
              Foreign                                        0        1,222          933
                                                     ---------    ---------     --------
                                                            43        1,223          934
                                                     ---------    ---------     --------

          Deferred:
              Federal                                    8,495      (37,800)           0
              State                                        232       (6,000)           0
              Foreign                                        0            0            0
                                                     ---------    ---------     --------
                                                         8,727      (43,800)           0
                                                     ---------    ---------     --------

                                                     $   8,770    $ (42,577)    $    934
                                                     =========    =========     ========
</TABLE>

     The income tax  reconciliation  from  income  (loss)  before  income  taxes
computed at the federal  statutory rate (34%) to the Company's actual income tax
provision is as follows: <TABLE> <CAPTION>

          Year ended June 30,                             1998         1997         1996
                                                     ---------    ---------     --------
<S>                                                  <C>            <C>            <C>

          Tax at U.S. federal statutory rate         $   7,454    $ (29,030)    $ (6,320)
          State taxes, net of federal benefit              181            1            1
          Foreign taxes                                      0        1,222          933
          Purchase accounting book/ tax basis
            differences                                      0       19,781            0
          Change in valuation allowance                      0      (42,449)       6,245
          Other                                          1,135          415           75
          Adjustments to carryover amounts                   0        7,483            0
                                                     ---------    ---------     --------
                                                     $   8,770    $ (42,577)    $    934
                                                     =========    =========     ========
</TABLE>

     The Company's deferred tax assets and liabilities are as follows:
<TABLE>
<CAPTION>

                                                             June 30
                                                          1998         1997
                                                      --------    ---------
<S>                                                  <C>            <C>

          Book and tax depreciation/amortization
            differences                              $   5,891    $     831
          Accrued liabilities                            1,951        1,363
          Net operating loss carryforwards              51,281       49,348
          Tax credits                                    6,956        5,676
          Other                                         (2,010)      (1,318)
                                                     ---------    ---------
                                                        64,069       55,900
          Valuation allowance                                0            0
                                                     ---------    ---------
          Deferred taxes, net                        $  64,069    $  55,900
                                                     =========    =========
</TABLE>

     The Company has not recorded  current  provisions for United States federal
income taxes due to net operating losses for tax reporting purposes. At June 30,
1998, the Company had net operating loss carryforwards for federal tax reporting
purposes  of  approximately  $150,000,000  expiring  from 2000 to 2013.  The net
operating  loss  includes  the tax  benefit  related  to the  exercise  of stock
options, which benefit was recorded to common stock. The Company also has

<PAGE>


federal   research  and  development   credit   carryforwards  of  approximately
$4,800,000  at June 30,  1998.  The future  utilization  of net  operating  loss
carryforwards for federal income tax purposes may be impacted by the issuance of
additional equity securities.

     Due to California's  partial conformity with federal  provisions  regarding
net operating loss and research and development credit  carryforwards,  and as a
result of the Company's use of certain state tax planning strategies,  for state
tax reporting  purposes at June 30, 1998,  the Company has no net operating loss
carryforwards  and  has  research  and  development   credit   carryforwards  of
approximately $2,200,000. Such credits do not expire.

     Based on its 1998  operating  results and its  estimates of future  taxable
income,  the Company  believes that it is more likely than not that its deferred
tax assets  (comprised  mostly of net operating loss  carryforwards and research
credits) will be realized and has therefore recorded the full tax benefit of its
deferred tax assets as of June 30, 1998.

     Foreign tax expense  represents  certain  withholding taxes associated with
collaboration payments from JT.



<PAGE>


Note 7 -  Stockholders' equity

Stock Options

     The Company's stock option plans, as amended, are administered by the Board
of Directors or its designees and provide  generally  that, for incentive  stock
options,  the exercise price shall not be less than the fair market value of the
shares at the date of grant and, for certain  non-qualified  stock options,  the
price shall not be less than 85% of the fair  market  value of the shares at the
date of  grant  and  others  may be at any  price  determined  by the  Board  of
Directors.  The  options  expire  not later  than ten years from the date of the
grant and generally become exercisable  ratably over a three or four year period
beginning one year from the grant date. In February 1998, the Board of Directors
adopted  the most  recent  plan  and  reserved  1,000,000  shares  for  issuance
thereunder.  At June 30, 1998, the Company had 1,898,556  shares of common stock
available  for future grant under its stock option plans.  The  following  table
summarizes stock option activity for 1996 through 1998: <TABLE> <CAPTION>

                                                                              Shares                Prices
<S>                                                                        <C>           <C>        <C>

           Outstanding June 30, 1995                                       5,171,384     $  .24-    $12.25
                Options granted                                            2,324,950      11.78-     23.00
                Options exercised                                           (586,412)      2.70-      9.19
                Options canceled                                             (81,208)      3.94-     19.57
                                                                       -------------

           Outstanding June 30, 1996                                       6,828,714       2.70-     23.00

                Alanex options assumed                                       378,084        .27-      3.98
                Options granted                                            2,798,500      15.19-     47.13
                Options exercised                                           (980,472)       .27-     22.19
           Options canceled                                                 (205,536)      4.32-     36.35
                                                                       -------------

           Outstanding June 30, 1997                                       8,819,290        .27-     47.13

                Options granted                                            1,115,394      28.00-     55.13
           Options exercised                                              (1,344,104)       .27-     34.82
           Options canceled                                                 (169,312)       .27-     55.13
                                                                       -------------

           Outstanding June 30, 1998                                       8,421,268     $  .27-    $55.13
                                                                       =============
</TABLE>


<PAGE>


     The following  table  summarizes  information  concerning  outstanding  and
exercisable options as of June 30, 1998:
<TABLE>
<CAPTION>

                                                 Options Outstanding                      Options Exercisable
                                   Number           Weighted         Weighted            Number         Weighted
                                 Outstanding            Average           Average           Exercisable
          Average
          Ranges of Exercise        as of           Remaining        Exercise             as of         Exercise
          Prices                June 30, 1998     Life (years)         Price          June 30, 1998       Price
                                -------------    --------------   ---------------     -------------  ----------
<S>                                <C>                     <C>    <C>                   <C>         <C>

          Less than $20.00         3,601,287               6.14   $         8.70        2,810,426    $        7.47
          $20.00 to $40.00         3,276,381               8.25            27.18        1,149,617            23.74
          Greater than $40.00      1,543,600               8.99            42.56          370,058            41.26
                               -------------     --------------   --------------    -------------    -------------
                                   8,421,268               7.48   $        22.10        4,330,101    $       14.68
                               =============     ==============   ==============    =============    =============
</TABLE>

     The Company  applies APB  Opinion  No. 25 and  related  Interpretations  in
accounting  for  its  plans.  Accordingly,  no  compensation  expense  has  been
recognized  for  its  stock  option  plans.  Had  compensation  expense  for the
Company's  stock option plans been  determined  based upon the fair value method
prescribed  under  FAS 123,  the  Company's  reported  results  would  have been
impacted as follows: <TABLE> <CAPTION>

(In thousands, except per share amounts)                   1998          1997           1996
                                                      ---------      --------      ---------
<S>                                                   <C>           <C>             <C>

                  Net income (loss)
                    As reported                       $ 13,154      $(42,806)       $(19,523)
                    Compensation expense:
                      Stock options                    (19,891)       (9,496)         (1,133)
                      Employee stock purchase plan      (1,441)         (394)           (204)
                                                      --------       -------        --------
                    Pro-forma                         $ (8,178)     $(52,696)       $(20,860)
                                                      ========      ========        ========

                  Pro-forma earnings (loss) per share:
                    Basic                             $   (.27)      $ (1.96)       $  (1.06)
                    Diluted                           $   (.27)      $ (1.96)       $  (1.06)
</TABLE>

     The  weighted-average  fair value of each option  grant is estimated on the
date of grant using the Black  Scholes  option-pricing  model with the following
weighted-average  assumptions  used  for  1998,  1997  and  1996,  respectively:
expected volatility of 50% each year;  risk-free interest rate of 5.7%, 6.1% and
6.1%;  an  average  expected  life of 3  years,  4  years  and 4  years;  and no
dividends.  The weighted average fair value of stock option grants was $16.57 in
1998, $15.25 per share in 1997 and $8.97 per share in 1996.

     In connection with its 1997 acquisition of Alanex,  the Company assumed all
of the issued and  outstanding  options of Alanex  which  resulted in options to
purchase  an  aggregate  of  378,084  shares of the  Company's  common  stock at
exercise prices ranging from $.27 to $3.98 per share.

Employee Stock Purchase Plan

     The Company  has a stock  purchase  plan in which  eligible  employees  may
purchase  shares of the Company's  common stock through  payroll  deductions.  A
total of 500,000  shares of common stock have been  reserved for issuance  under
the plan,  of which  131,156  shares  remain  available for purchase at June 30,
1998. Funds deducted from participating employees' salaries are used to purchase
common stock at prices equal to 85% of the fair market value of the common stock
on either  the first or last day of a  purchase  period.  During  1998,  109,834
shares were issued at a

<PAGE>


price of $24.97 per share.  During 1997,  9,730 shares were issued at a price of
$14.29 per share,  47,036  shares were issued at a price of $17.37 per share and
15,072  shares were issued at a price of $28.69 per share.  During 1996,  12,262
shares were issued at a price of $4.94 per share, 46,480 shares were issued at a
price of $9.99 per share and 9,656  shares  were issued at a price of $14.29 per
share.

     Under FAS 123,  pro-forma  compensation  expense equal to the fair value of
the purchase rights granted under the employee stock purchase plan was estimated
using the Black-Scholes model with the following  assumptions for 1998, 1997 and
1996:  an  expected  life of one year;  expected  volatility  of 50  percent;  a
risk-free interest rate of 5.6 percent;  and no dividends.  The weighted-average
fair value of purchase  rights  granted was $13.12 per share in 1998,  $5.96 per
share in 1997 and $3.47 per share in 1996.

Warrants

     In connection with its 1997  acquisition of Alanex,  the Company assumed an
issued and outstanding warrant to purchase Alanex common stock. Accordingly,  at
June 30,  1997,  a warrant to purchase  an  aggregate  of 169,522  shares of the
Company's  common stock at an exercise price of $4.01 per share was outstanding.
In July 1997, the warrant was exercised in its entirety  generating net proceeds
to the Company of approximately $679,800.

Stockholder Rights Plan

         In November 1996, the Company's Board of Directors  declared a dividend
of one preferred  stock purchase right ("Right") for each  outstanding  share of
the  Company's  common stock held on the date (this  dividend now amounts to one
half of a Right  per share of common  stock now  outstanding  as a result of the
two-for-one  split of common  stock in August  1997).  The Rights will expire 10
years after issuance,  and will be exercisable only if a person or group becomes
the beneficial owner of 15% or more of the common stock (such person or group, a
"15% holder") or commences a tender or exchange  offer which would result in the
offeror  beneficially  owning 15% or more of the common  stock.  Each Right will
entitle  stockholders  to buy one  one-ten  thousandth  of a share  of  Series B
Participating Preferred Stock of the Company at an exercise price of $500.00 per
share subject to certain anti-dilution adjustments.

     If a person or group  accumulates  15% or more of the  common  stock,  each
Right (other than Rights held by a 15% holder and certain related parties, which
will be voided) will be adjusted so that upon  exercise the holder will have the
right  to  receive  that  number  of  shares  of  common  stock  (or in  certain
circumstances,  a combination  of securities  and/or  assets)  having a value of
twice the  exercise  price of the Right.  In addition,  if following  the public
announcement  of the  existence  of a 15%  holder,  the Company is involved in a
merger or business  combination or a sale of 50% or more of the Company's assets
or earning power, each Right (other than Rights held by a 15% holder and certain
related parties,  which will be voided) will represent the right to purchase, at
the exercise price, common stock of the acquiring entity having a value of twice
the exercise price at the time. The Board of Directors will also have the right,
following the public  announcement  of the  existence of a 15% holder,  to cause
Rights  (other than Rights held by the 15% holder and certain  related  parties,
which will be voided) to be exchanged  for one share of common stock  (presently
at an exchange ratio of two shares of common stock for each Right).


<PAGE>


Note 8 - Commitments

     Certain  scientific  instrumentation,  computers  and other  equipment  are
subject to leases which are classified as capital  leases.  At June 30, 1998 and
1997,  $4,331,000  ($3,408,000,  net) and $2,895,000  ($2,629,000,  net) of such
leased equipment are included in property and equipment.

     Rental  expenses   (principally  for  leased   facilities  under  long-term
operating  lease  commitments)  were  $5,031,000,  $3,509,000 and $2,548,000 for
1998, 1997 and 1996. Future minimum payments for capital and operating leases at
June 30, 1998 are as follows: <TABLE> <CAPTION>

                                                      Capital Leases               Operating Leases
(Dollars in thousands)
<S>                                                   <C>                           <C>
           1999                                       $        819                  $        7,472
           2000                                                812                           5,507
           2001                                                818                           5,314
           2002                                                578                           3,943
           2003                                                243                           2,630
           Thereafter                                            0                           2,047
                                                      ------------                  --------------

           Total minimum lease payments                      3,270                  $       26,913
                                                                                    ==============
           Less amount representing interest                   (56)
                                                      -------------

           Obligations under capital leases           $      3,214
                                                      ============
</TABLE>

     The Company is involved in certain legal proceedings  generally  incidental
to its normal  business  activities.  While the outcome of any such  proceedings
cannot be  accurately  predicted,  the Company  does not  believe  the  ultimate
resolution of any such existing matters should have a material adverse effect on
its financial position or results of operations.



<PAGE>


Note 9 - Alanex acquisition

     In April 1997, the Company executed a merger  agreement with Alanex,  which
now operates as a wholly-owned subsidiary of Agouron. For all outstanding shares
of Alanex common stock and related options and warrants, approximately 2,000,000
shares of Agouron  common  stock were issued,  subject to certain  restrictions.
Such  shares had an  aggregate  fair  market  value on the  measurement  date of
approximately  $61,000,000 and transaction costs were approximately  $1,300,000.
Of the total purchase  price  (including  transaction  costs),  $57,500,000  was
allocated  (as more  fully  described  below) to certain  intangible  assets and
expensed as in-process technology and approximately  $4,800,000 was allocated to
certain tangible and intangible assets and capitalized.

     The  identifiable  intangibles of Alanex include  several drug research and
discovery programs, a proprietary drug discovery technology, a chemical compound
library and an assembled work force.  These intangibles were valued using either
a replacement cost approach (work force, library and proprietary  technology) or
an income approach (research programs). Values assigned to the chemical compound
library and proprietary drug discovery technology have been capitalized, as such
intangibles are of a general nature and may have a number of alternative  future
uses. Values assigned to the drug discovery programs have been expensed, as such
programs  are  pursuing  specific  drug  targets  or  chemical  compounds,   the
technological  feasibility of which having not been demonstrated,  and there may
be no  alternative  future uses for such  targets or chemical  compounds  if the
programs are ultimately less than successful.

     The Company's statement of income (loss) includes the results of operations
related to the  acquisition  since  April  1997.  The  following  are  unaudited
pro-forma  results of operations as if the transaction  had been  consummated on
July 1, 1995:

(In thousands except for per share amounts.)
<TABLE>
<CAPTION>

         Year ended June 30,                                               1997              1996
                                                                        (unaudited)       (unaudited)
<S>                                                                   <C>               <C>
         Revenues                                                      $     138,872    $      62,392
                                                                       =============    =============

         Net income (loss)                                             $      14,276    $     (19,421)
                                                                       =============    =============

         Earnings (loss) per share                                     $         .51    $        (.92)
                                                                       =============    =============
</TABLE>



<PAGE>



Note 10 - Quarterly financial data (unaudited)

(In thousands, except for
per share amounts)
<TABLE>
<CAPTION>

                                                                   Quarter Ended
                                         September 30     December 31         March 31          June 30
                                        -------------     -------------    -------------     ----------
<S>                                     <C>               <C>              <C>               <C>   >

1997
Product sales                           $           0     $           0    $      13,401     $      43,568
Gross margin from product sales                     0                 0            7,378            24,992
Net loss                                      (14,447)          (12,556)          (4,999)          (10,804)
Earnings (loss) per share:
  Basic                                          (.57)            (.46)             (.18)             (.38)(1)
  Diluted                                        (.57)            (.46)             (.18)             (.38)(1)

1998
Product sales                           $      79,502     $      91,800    $     111,950     $     126,046
Gross margin from product sales                45,429            53,858           62,730            74,637
Net income (loss)                               3,630             4,922           13,525            (8,923)
Earnings (loss) per share:
  Basic                                           .12              .16               .44              (.29)(2)
  Diluted                                         .11              .15               .41              (.29)(2)

</TABLE>

(1)  During the fourth  quarter of 1997,  the Company  recorded a  write-off  of
     $57,500,000 ($2.03 per share) of in-process  technology associated with the
     acquisition of Alanex,  partially  offset by the realization of $43,800,000
     ($1.54 per share) of  deferred  tax assets  associated  with the  Company's
     expectation of future taxable income.

(2)  During the fourth quarter of 1998, the Company incurred  in-licensing costs
     of $26,000,000 (tax-effected $.50 per share) for commercial rights to three
     development stage anti-HIV products.


<PAGE>


                                    ANNEX IV

                        AGOURON PHARMACEUTICALS DIVISION
                             DESCRIPTION OF BUSINESS

General

     Agouron  Pharmaceuticals  ("Agouron  Pharmaceuticals")  is  a  division  of
Agouron   Pharmaceuticals,   Inc.   ("Agouron"   or  the   "Company").   Agouron
Pharmaceuticals  encompasses  all of the  activities of Agouron except for those
activities  related  to  the  research,  development  and  commercialization  of
oncology products. Such products are being pursued by the Oncology Division.

     Agouron Pharmaceuticals,  through its own sales and marketing organization,
is currently marketing in the United States the first drug developed by Agouron,
VIRACEPT(R)  (nelfinavir mesylate) for treatment of HIV infection.  In addition,
Agouron  Pharmaceuticals is expected to initiate a phase II/III pivotal clinical
trial of REMUNE(TM)(AG1661),  an immune-based therapeutic agent for treatment of
HIV infection and AIDS being  co-developed  by Agouron  Pharmaceuticals  and The
Immune Response  Corporation  ("IRC").  Further,  Agouron  Pharmaceuticals has a
number of programs in progress for discovery or  development  of other new drugs
in the fields of viral disease, inflammatory disease and other serious diseases.
Agouron Pharmaceuticals  utilizes the proprietary core drug discovery technology
of Alanex  Corporation  ("Alanex"),  a  wholly-owned  subsidiary of Agouron,  to
accelerate the steps necessary to discover small molecule drug candidates.  Such
steps  include the initial  identification  of compounds  that exhibit  activity
against  selected  biological  targets to the  progression of these compounds to
drug candidates for human clinical trials.

     Agouron  Pharmaceuticals'  long-term goal is increasing  profitability from
the sale of drugs generated from its own drug discovery and development efforts,
and from  development  and  commercialization  of drugs  originated  outside  of
Agouron Pharmaceuticals.  To augment its technical capabilities,  to enhance the
likelihood of successful commercialization of its products and to offset some of
its operating  costs,  Agouron  Pharmaceuticals  has entered into  collaborative
research   and   development   arrangements   with  other   companies.   Agouron
Pharmaceuticals  has generally retained  significant  commercial rights in drugs
developed in its collaborative research and development programs funded in whole
or in part by other  companies.  Agouron  Pharmaceuticals  anticipates  that its
successfully  developed  products  will be  commercialized  both through its own
direct sales and  marketing  activities  in certain  pharmaceutical  markets and
through  manufacturing  and marketing  relationships  with other  pharmaceutical
companies.

Narrative Description of Business

     Agouron Pharmaceuticals is developing innovative drugs for treatment of HIV
infection and other serious diseases and has expended approximately $449,000,000
on  research  and  development  since its  inception,  excluding  a  $57,500,000
write-off for  in-process  technology  purchased in 1997 in the  acquisition  of
Alanex.



<PAGE>


VIRACEPT

     In March 1997, Agouron Pharmaceuticals received clearance from the Food and
Drug  Administration  ("FDA") to market its first drug,  VIRACEPT,  a potent HIV
protease inhibitor that  substantially  decreases viral load and increases CD4+T
cell counts when used in  combination  antiretroviral  drug  therapy.  An orally
administered product, VIRACEPT is available in adult and pediatric formulations.

     VIRACEPT  sales in the United States totaled  $358,321,000  in fiscal 1998.
Agouron  Pharmaceuticals  estimated  that 85,000  patients in the United  States
(over 125,000 in the world) were taking  VIRACEPT at the end of June 1998. It is
anticipated  that  continued  increasing  VIRACEPT sales will make a substantial
contribution toward profitable financial results in the future.

     Agouron  Pharmaceuticals  developed  VIRACEPT  in  collaboration  with  the
pharmaceutical  division of Japan Tobacco Inc. ("JT").  Agouron  Pharmaceuticals
and JT granted  exclusive  commercial  rights in Europe,  Asia and certain other
countries in the world to Hoffmann-La  Roche Inc. and F.  Hoffmann-La  Roche Ltd
("Roche"). Agouron Pharmaceuticals and JT share profits and/or royalties equally
from the worldwide commercialization of VIRACEPT.

     In January and March 1998,  VIRACEPT was  approved for  marketing in Europe
and Japan, respectively.  VIRACEPT license fees and royalties from Roche totaled
$17,852,000 in 1998.

Research and Development Programs

     Agouron  Pharmaceuticals'  research and  development  programs focus on the
areas  of  AIDS  and  other  serious  diseases.  Agouron  Pharmaceuticals'  drug
discovery  programs  apply  Agouron's  core  technologies  of  three-dimensional
structure based drug design and high-throughput  screening of chemical libraries
generated by computation-directed combinatorial chemistry.

     The  following  table  outlines  the status of various  programs in Agouron
Pharmaceuticals' research and development portfolio.  Agouron Pharmaceuticals is
pursuing some of these programs independently, while others are being undertaken
in collaboration with other companies.


<PAGE>

                                    Research
                                       and
                                   Development
  Program                              Indication                 Stage

Viral Disease


     VIRACEPT(1)                    HIV Infection              Approved
     REMUNE (AG1661)(2)             HIV Infection              Phase II/III
     AG1549 (S-1153)(3)             HIV Infection              Phase I
     AG1776 (JE-2147)(4)            HIV Infection              Preclinical
     AG7088                         Common Cold                Preclinical
     Hepatitis C agents(5)          Viral Disease              Research
     HIV Integrase Inhibitors       HIV Infection              Research

Ophthalmology

     AG3340                         Macular Degeneration       Phase II
     Other MMP Inhibitors           Macular Degeneration       Preclinical
     VEGF Inhibitors                Macular Degeneration       Research

(1)   In collaboration with Japan Tobacco Inc. and F. Hoffman-La Roche Ltd.
(2)   In collaboration with The Immune Response Corporation.
(3)   In collaboration with Shionogi & Co., Ltd.
(4)   In collaboration with Japan Energy Corporation.
(5)   In collaboration with Japan Tobacco Inc.

Viral Disease

Overview

     The development of new drugs for the treatment of certain viral diseases is
an important scientific and commercial focus of Agouron Pharmaceuticals. Agouron
Pharmaceuticals  is presently  conducting  programs  aimed at  discovery  and/or
development of several classes of anti-viral  drugs that block viral  proteases,
enzymes  required  by  several  families  of  pathogenic  viruses  to carry  out
replication and infection.  Agouron  Pharmaceuticals  ' anti-viral drug programs
include  HIV  protease   inhibitors   (VIRACEPT  and  AG1776),  an  immune-based
therapeutic (REMUNE), a non-nucleoside reverse transcriptase inhibitor (AG1549),
rhinovirus 3C protease  inhibitors,  and hepatitis C protease  enzymes.  Agouron
Pharmaceuticals   is  developing   certain  of  its  anti-viral   drugs  through
collaboration(s)  with JT,  Roche,  IRC,  Shionogi & Co.,  Ltd. and Japan Energy
Corporation.





<PAGE>


HIV Protease Inhibitor: VIRACEPT

     HIV protease is an enzyme that performs an essential role in the infectious
cycle of HIV, and clinical  research has  demonstrated  that  inhibition  of the
protease  enzyme renders HIV unable to form new infectious  virus.  Today,  five
FDA-approved  HIV  protease  inhibitors   (including   VIRACEPT)  are  making  a
significant contribution in the management of HIV disease.

     VIRACEPT was cleared by the FDA for marketing in the United States in March
1997  pursuant  to the  FDA's  guidelines  for  accelerated  approval.  VIRACEPT
development  activities now include certain  additional  phase II/III studies to
facilitate  the full approval of the drug and certain phase IV studies  designed
to expand the utilization of the product.

Immune-based therapeutic agent:  REMUNE (AG1661)

     An important  recent goal in treatment of HIV  infection is to combine such
highly active drugs as HIV protease  inhibitors,  capable of halting replication
of HIV, with agents capable of directly enhancing recovery of the immune system.
REMUNE is an immune-based  therapeutic agent, derived from HIV itself, which has
been  shown to  stimulate  the  immune  system to  respond  specifically  to HIV
infection and to produce the increases in substances such as chemokines that may
provide   protection  to  uninfected   cells.   Discovered  by  IRC,  REMUNE  is
administered  as an  intramuscular  injection  every three months,  and has been
well-tolerated in clinical trials to date.

     In May 1997,  enrollment  was  completed at 74 centers in the United States
for a pivotal phase III, clinical end-point trial in which  approximately  2,500
patients were randomized to receive  conventional  anti-retroviral  drug therapy
with or without  REMUNE.  This study is expected to be  completed in March 1999.
More than 250 patients  have been enrolled in two other  clinical  studies which
are evaluating the effect of REMUNE in combination with anti-retroviral drugs on
virologic  and  immunologic  markers  in adults.  A smaller  study of REMUNE for
treatment of HIV infection in children is in progress at the National Institutes
of Health.

     In  June  1998,  Agouron  and  IRC  began  a  collaboration  on  the  final
development and  commercialization  of REMUNE.  Agouron has exclusive  rights to
market REMUNE in North  America,  Europe and certain other  countries;  IRC will
manufacture  commercial  supplies of REMUNE.  Agouron and IRC will share equally
all profits from the commercialization of REMUNE in the licensed territory.

Non-nucleoside reverse transcriptase inhibitor (NNRTI): AG1549 (S-1153)

     AG1549 is a  second-generation  NNRTI for the  treatment of HIV  infection.
Discovered by Shionogi & Co., Ltd. ("Shionogi"), AG1549 is currently the subject
of several  clinical  trials  evaluating its dose and its  concomitant  use with
other antiretroviral treatments.  AG1549 is of high clinical interest because it
is ten times more  potent in vitro than  currently  approved  NNRTIs and because
AG1549 is fully active in vitro against HIV  containing  the most common genetic
mutation (at position 103) associated with resistance to other NNRTIs.

     Agouron  Pharmaceuticals  has  exclusive  rights  to  the  development  and
commercialization of AG1549, except in Japan, South Korea and Taiwan, subject to
the payment of royalties to Shionogi.

HIV Protease Inhibitor:  AG1776 (JE-2147)

     AG1776  is a  protease  inhibitor  for  the  treatment  of  HIV  infection.
Preclinical  data indicate that AG1776,  discovered by Japan Energy  Corporation
("JE"),  works  synergistically  in vitro with other  protease  inhibitors.  The
compound has also exhibited activity against HIV mutations  commonly  associated
with resistance to other protease inhibitors.

     Agouron  Pharmaceuticals has exclusive world-wide rights to the development
and  commercialization  of AG1776 except in Japan,  South Korea, North Korea and
Taiwan,  subject to the payment of  royalties  to JE; JE will  manufacture  bulk
compound for use in final drug product.




<PAGE>




Rhinovirus 3C Protease Inhibitor:  AG7088

     Rhinoviruses  are  believed  to be the single  most  frequent  cause of the
common  cold.  While  rhinovirus  infections  are a periodic  annoyance  to most
individuals,  they may produce more severe and prolonged symptoms in people with
chronic obstructive pulmonary disease,  such as asthma and emphysema.  All known
strains of rhinoviruses depend on a critical enzyme, the 3C protease, at several
stages of their life cycle for production of new infectious viruses. Agouron has
designed potent, selective rhinovirus 3C protease inhibitors,  including AG7088,
that are  currently  being  evaluated in  preclinical  pharmacological  studies.
Agouron  Pharmaceuticals  retains all commercial  rights in compounds  resulting
from this program.

HIV Integrase Inhibitors

     The drugs  currently  approved in the United  States for  treatment  of HIV
infection consist of reverse  transcriptase  inhibitors and protease  inhibitors
(including  VIRACEPT).  Another  mechanism  of  action  is  inhibition  of HIV-1
integrase, a key enzyme in catalyzing the integration of HIV into human cells.

     Agouron  scientists  believe  that  blocking  HIV  integrase  is  a  viable
therapeutic  strategy  that  will  abort  completion  of the viral  life  cycle,
preventing  infection of new,  uninfected target cells.  Scientists also believe
that HIV integrase is an  attractive  target,  because it is extremely  unlikely
that an HIV  integrase-specific  inhibitor  will  nonspecifically  inhibit other
eukaryotic enzymes.  This fact may possibly reduce the incidence of side effects
of an integrase inhibitor used to treat HIV infection.  Agouron  Pharmaceuticals
retains all commercial rights in compounds resulting from this program.

Anti Hepatitis C Drugs

     The hepatitis C virus ("HCV") is a virus that causes illnesses ranging from
a mild flu-like  disease to  progressive  liver  disease,  cirrhosis and primary
liver  cancer.  The ability to treat  infection by HCV  represents a significant
unmet clinical need,  particularly in Asian countries.  HCV depends upon several
key  protease  enzyme  for  the  production  of new  infectious  virus.  Agouron
Pharmaceuticals  scientists  have  initiated  programs  to design new classes of
anti-viral drugs that block such enzymes and disrupt the HIV life cycle. Agouron
Pharmaceuticals is pursuing this research program in collaboration with JT.


<PAGE>



Ophthalmology

Overview

     A hallmark of many serious retinal disorders,  such as age-related  macular
degeneration,  macular edema,  retinopathy  of  prematurity,  and  proliferative
diabetic retinopathy,  is an extensive proliferation of new blood vessels in the
retina  and  underlying  choroid.   This  process,   known  as  angiogenesis  or
neovascularization,  often leads to retinal  hemorrhage that results in the loss
of ganglion cells,  degeneration of the central optic nerve, and eventually loss
of  central  and/or  peripheral  vision.  The most  common  neovascular  retinal
disorder, namely age-related macular degeneration, has recently become a leading
cause of blindness in the elderly population in the industrialized world.

     In common with other  tissues,  the growth of new blood vessels is mediated
by many  factors  including  various  members  of the  family of MMPs,  VEGF and
Fibroblast  Growth  Factors  ("FGF")  and their  respective  receptors  and some
members  of  the  integrin  family  of  receptors   involved  in  cell-cell  and
cell-matrix  interactions.  In ocular tissues,  the production of these factors,
receptors  and MMPs is increased by local  hypoxia,  the most notable  condition
believed  to  stimulate   retinal  and   subretinal   neovascularization.   Most
significantly,  in the ocular tissue of patients with any of the above mentioned
diseases,  elevated levels of growth factors,  integrins and MMPs (in particular
MMP-2 and MT-MMP-1) were consistently identified.

     Key  mediators  of  angiogenesis   have  been  associated  with  ophthalmic
disorders.  VEGF and basic FGF are strongly  implicated as causative  angiogenic
agents in a variety of  studies.  In ocular  tissues,  the  production  of these
growth factors is increased by hypoxia,  the most notable condition  believed to
stimulate  retinal  angiogenesis.  Most  significantly,  in patients  undergoing
surgery,  high levels of VEGF in ocular fluid were found associated with macular
degeneration,  active  diabetic  retinopathy,  central vein  occlusion and other
disorders.

     Current studies in the area of  ophthalmology  involve an assessment of the
impact that inhibitors of MMPs might have on therapeutic practice and in meeting
medical needs in these areas.  Agouron  Pharmaceuticals  is conducting in animal
models a series of  proof-of-principle  pre-clinical  studies of ocular diseases
with the MMP  inhibitor  AG3340 in  preparation  for the  commencement  of human
clinical studies.  Agouron Pharmaceuticals has recently demonstrated significant
accumulation of AG3340 in the vitreous humor of rats and monkeys  following oral
dosing.

     Likewise,  it is anticipated  that when suitable  inhibitors of VEGF become
available,  they will be tested in the existing ocular angiogenesis models prior
to  selection   of  a  lead   compound   for   clinical   development.   Agouron
Pharmaceuticals  retains all commercial rights in compounds  resulting from this
program.



<PAGE>


Business Relationships/Research and Development Agreements

     Agouron  Pharmaceuticals has funded its research and development  primarily
from  working  capital  generated  from both private and public sales of Agouron
Pharmaceuticals   equity,   collaborative   arrangements   and   the   financial
contribution  resulting  from  product  sales.  Agouron  Pharmaceuticals  has an
ongoing  program of business  development  which may, from time to time, lead to
the establishment of corporate collaborations in addition to those noted below.

Japan Tobacco Inc.


     In February 1994, Agouron Pharmaceuticals entered into a strategic alliance
with JT in the field of anti-viral drugs for the treatment of infections  caused
by hepatitis C and the herpes family of viruses.  In December  1994, the Company
added its anti-HIV drug, VIRACEPT, to the JT collaboration with the execution of
a world-wide development and licensing agreement. Agouron Pharmaceuticals and JT
share equally the costs of further development of VIRACEPT.

     Currently,  Agouron  Pharmaceuticals  has  exclusive  commercial  rights to
VIRACEPT  (with the right to  sublicense)  in North America and JT has exclusive
commercial rights to VIRACEPT (with the right to sublicense) in certain parts of
Japan.  Agouron  Pharmaceuticals  and JT share profits and/or royalties  equally
from the world-wide commercialization of VIRACEPT.

Roche

     Agouron Pharmaceuticals and JT have granted Roche certain exclusive royalty
bearing  marketing  rights to  VIRACEPT  outside of North  America  and parts of
Japan.  Further,  Agouron  Pharmaceuticals  receives  royalties  based either on
Roche's  sales  of  VIRACEPT  or,  in  certain  circumstances,  Invirase(R)  and
Fortavase(R) (saquinavir),  Roche's HIV protease inhibitors. Roche has the right
to  manufacture  VIRACEPT  for  its own use and is  expected  to  commence  such
manufacturing in calendar 1999.



<PAGE>


Immune Response

     In June 1998,  Agouron  Pharmaceuticals  entered  into a binding  letter of
intent with IRC to collaborate on final  development  and  commercialization  of
REMUNE,  an immune-based  therapeutic  agent discovered by IRC and currently the
subject of several clinical studies  including a large phase III clinical trial.
The two companies intend to enter promptly into a definitive  agreement and will
endeavor to complete  development  and  registration of REMUNE in 1999. IRC will
manufacture commercial supplies of REMUNE, and Agouron Pharmaceuticals will have
exclusive  rights to market  REMUNE in North  America,  Europe and certain other
countries.   The  two   companies   will  share   equally   all   profits   from
commercialization of REMUNE in the licensed territory.  Agouron  Pharmaceuticals
paid an initial  $10,000,000  license fee to IRC in June 1998 and also purchased
118,256   newly   issued   common   shares  of  IRC  for   $2,000,000.   Agouron
Pharmaceuticals may pay, assuming ongoing successful  development,  registration
and approval of REMUNUE, to IRC up to $53,000,000 in additional  development and
milestone payments and $12,000,000 in purchases of additional IRC common stock.

Shionogi & Co., Ltd.

     In June 1998,  Agouron  Pharmaceuticals  entered  into a binding  letter of
intent with Shionogi to develop and  commercialize  AG1549, a  second-generation
NNRTI for the  treatment of HIV  infection.  Discovered  by Shionogi,  AG1549 is
currently the subject of several  clinical  trials  evaluating  its dose and its
concomitant use with other antiretroviral treatments. AG1549 is of high clinical
interest  because it is ten times more potent in vitro than such other NNRTIs as
nevirapine  (Viramune(R)) and delavirdine  (Rescriptor(R)) and because AG1549 is
fully active in vitro against HIV containing  the most common  genetic  mutation
(at  position  103)  associated  with  resistance  to  other  NNRTIs,  including
efavirenz (Sustiva(TM)).

     Agouron  Pharmaceuticals  has  exclusive  rights  to  the  development  and
commercialization  of AG1549  except in Japan,  South Korea and Taiwan.  Agouron
Pharmaceuticals  paid an initial  $10,000,000  license  fee to  Shionogi in June
1998. Agouron  Pharmaceuticals may pay, assuming ongoing successful development,
registration  and  approval  of  AG1549,   additional  license  fees  of  up  to
$30,000,000.  In addition,  Agouron  Pharmaceuticals will pay Shionogi royalties
based on sales, if any, of AG1549.

Japan Energy Corporation

     In June 1998, Agouron Pharmaceuticals entered into a license agreement with
JE to develop and  commercialize  AG1776,  a novel  protease  inhibitor  for the
treatment of HIV infection. Preclinical data indicate that AG1776, discovered by
JE, works synergistically in vitro with other protease inhibitors.  The compound
has  also  exhibited  activity  against  mutations   commonly   associated  with
resistance to other protease inhibitors.


<PAGE>



     Agouron  Pharmaceuticals has exclusive world-wide rights to the development
and  commercialization  of AG1776 except in Japan,  South Korea, North Korea and
Taiwan; JE will manufacture bulk compound for use in final drug product. Agouron
Pharmaceuticals incurred an initial $6,000,000 license fee in June 1998. Agouron
Pharmaceuticals may incur, assuming ongoing successful development, registration
and  approval  of  AG1776,  additional  license  fees of up to  $20,000,000.  In
addition,  Agouron Pharmaceuticals will pay JE royalties based on sales, if any,
of AG1776.

Manufacturing

     Agouron  Pharmaceuticals   utilizes  worldwide  contract  manufacturing  to
produce VIRACEPT.  Agouron Pharmaceuticals  procures and transfers raw materials
to contracted  bulk drug  producers,  sends the converted bulk drug to finishing
facilities and moves finished goods into a distribution  center.  Product supply
and associated  raw materials  have been  available in sufficient  quantities to
meet business  needs. In order to accommodate  anticipated  sales volume growth,
capacity expansion efforts are being pursued.  Agouron  Pharmaceuticals  will be
dependent  upon its  contract  manufacturers  to comply with good  manufacturing
practices  and to meet its  production  requirements.  There can be no assurance
that  Agouron  Pharmaceuticals'   contract  manufacturers  will  timely  deliver
sufficient  quantities  of Agouron  Pharmaceuticals'  products  or that  Agouron
Pharmaceuticals would be able to find substitute manufacturers, if necessary.

Marketing

     Agouron  Pharmaceuticals  distributes VIRACEPT in the United States through
wholesalers.  Sales  volumes in the United  States are  influenced by underlying
demand and wholesale inventory management practices.

     VIRACEPT  is covered by  Medicaid  programs in all states and is covered by
virtually all state AIDS Drug Assistance Programs ("ADAPs"). Currently, VIRACEPT
is paid for predominately by Medicaid,  private insurance and ADAPs. The Company
offers a patient  assistance  program  based upon  medical need for patients who
have no other means of coverage.

     Outside of North America and parts of Japan, VIRACEPT is marketed on behalf
of Agouron Pharmaceuticals and JT by Roche. Agouron  Pharmaceuticals  receives a
royalty on Roche's worldwide sales of VIRACEPT.

     Agouron  Pharmaceuticals' sales and marketing efforts utilize a field sales
organization which focuses primarily on office- and  hospital-based  physicians,
including key medical thought leaders. Additionally, Agouron Pharmaceuticals has
obtained market access and availability for its products in part by establishing
relationships   within  key  market  segments,   including  health   maintenance
organizations, third-party payers and governmental agencies.

Human Resources

     As of July 28, 1998, Agouron Pharmaceuticals had 991 employees. Of these it
is anticipated that  approximately  800 of these will be directly engaged in the
conduct of the Agouron Pharmaceuticals business.


<PAGE>



        MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND
                             RESULTS OF OPERATIONS

Overview

     This discussion contains  forward-looking  statements.  Such statements are
subject to certain risks and  uncertainties  which could cause actual results to
differ  materially  from  those  projected.  See  "Important  Factors  Regarding
Forward-Looking  Statements"  attached  as  Exhibit 99 to the  Company's  annual
report on Form 10-K for the period ended June 30, 1998 and  incorporated  herein
by  reference.  Readers  are  cautioned  not to place  undue  reliance  on these
forward-looking  statements which speak only as of the date hereof.  The Company
undertakes  no  obligation  to publicly  release the result of any  revisions to
these  forward-looking  statements  which  may be  made  to  reflect  events  or
circumstances   after  the  date  hereof  or  to  reflect  the   occurrence   of
unanticipated events.

     Agouron Pharmaceuticals ("Agouron  Pharmaceuticals" or "AP"), a division of
Agouron  Pharmaceuticals,  Inc. (the  "Company") is committed to the  discovery,
development, manufacturing and marketing of human pharmaceuticals targeting AIDS
and other serious diseases. Operations to date have been principally funded from
the Company's equity-derived working capital, various collaborative arrangements
and,   most   recently,   from  the  gross   margin   contribution   of  Agouron
Pharmaceuticals'  first  product,  VIRACEPT(R)  (nelfinavir  mesylate).  The net
income  reported in fiscal 1998 is principally due to the  commercialization  of
VIRACEPT  while  Agouron  Pharmaceuticals'  prior net operating  losses  reflect
primarily the result of its independent  research and substantial  investment in
the clinical and commercial development of VIRACEPT.

     In March 1997, Agouron  Pharmaceuticals  received clearance from the United
States  Food and Drug  Administration  ("FDA") to market  VIRACEPT in the United
States.  For the  fiscal  year  ended  June 30,  1998,  due  principally  to the
increasing product contribution from VIRACEPT sales, license fees and royalties,
Agouron Pharmaceuticals realized a net income of $37,387,000.

Results of Operations

     Product sales

     Product  sales  for the  fiscal  years  ended  June 30,  1997 and 1998 were
approximately  $57,000,000 and  $409,300,000  which included sales in the United
States of $55,559,000 and $358,321,000,  respectively.  Agouron  Pharmaceuticals
anticipates   that  VIRACEPT  sales  in  the  United  States  will   approximate
$430,000,000 to $440,000,000 for fiscal 1999.

     Contract revenues

     Collaborative  research and development  agreements with Japan Tobacco Inc.
("JT")  accounted for  substantially  all of Agouron  Pharmaceuticals'  contract
revenues for 1998,  1997 and 1996.  Total  contract  revenues for 1998 decreased
approximately  53% from  1997 due  principally  to  decreased  VIRACEPT  program
spending  by  Agouron  Pharmaceuticals,   which  was  partially  funded  by  JT.
Additionally,  the  amortization  to  revenue  over a 24  month  period  of JT's
$24,000,000 milestone payment, which

<PAGE>


was  received  in August  1995,  was  completed  in June 1997.  The  increase in
contract  revenues from 1996 to 1997 of approximately 31% was due principally to
increased  program  activity  and  spending  on the JT  collaborations.  Agouron
Pharmaceuticals   anticipates  that  contract  revenues  for  fiscal  1999  will
approximate $35,000,000 to $40,000,000.

     License fees and royalties

     Agouron  Pharmaceuticals' license fees and royalties for 1998 and 1997 were
principally derived from F. Hoffmann-La Roche Ltd ("Roche").  Total revenues for
1998 increased  approximately 84% from 1997 due to European  marketing  approval
for VIRACEPT.  The increase from 1996 to 1997 is principally  due to the receipt
of $9,000,000 in 1997 for initial European marketing rights for VIRACEPT.

     In January and March 1998,  VIRACEPT was  approved for  marketing in Europe
and Japan, respectively.  Upon such approvals,  Agouron Pharmaceuticals realized
as  revenue   license  fees  totaling   $12,000,000.   In  July  1997,   Agouron
Pharmaceuticals  and JT granted  Roche certain  exclusive  rights to VIRACEPT in
several Asian countries.  For such rights,  Agouron  Pharmaceuticals  received a
license fee of $2,000,000.

     Royalty revenues of  approximately  $3,852,000 have been recognized in 1998
based on estimated and actual Roche sales of VIRACEPT in its licensed territory.
Agouron  Pharmaceuticals  anticipates that license fees and royalties for fiscal
1999 will range from $30,000,000 to $35,000,000.

     Cost of product sales

     The  aggregate  cost of product  sales as a percentage of product sales was
approximately  43% and 42% for 1997 and 1998,  respectively.  Gross  margins  on
United States  commercial sales were  approximately  57% and 65% during 1997 and
1998,  respectively.  Agouron Pharmaceuticals  anticipates that gross margins on
United States  commercial  sales will improve as product sales volumes  increase
and certain manufacturing process and scale efficiencies are realized,  and will
approximate  71% in 1999.  Aggregate  gross margins will also be impacted by the
size of Agouron Pharmaceuticals' patient assistance program (which provides free
goods to indigent individuals),  Agouron  Pharmaceuticals'  manufacturing supply
agreement with Roche (whereby Roche has the right to either purchase  product at
Agouron   Pharmaceuticals'  cost  plus  contractually   determined  mark-ups  or
manufacture drug product for its own use,  subject to  contractually  determined
fees to be paid to Agouron  Pharmaceuticals)  and the level of sales  subject to
Medicaid and other discounts or rebates in the United States.

     Research and development

     Research and development  ("R&D") spending  increased by approximately  39%
from 1997 to 1998 due to license fees for three  development  stage HIV products
and  the  addition  of  Alanex  since  late  1997.  R&D  spending  increased  by
approximately 51% from 1996 to 1997 due principally to increased expenditures in
support of human clinical trials and an expanded access program  associated with
VIRACEPT. Agouron Pharmaceuticals  anticipates that total R&D expenses in fiscal
1999,  excluding the impact of any license fees or milestone  expenses in either
1998 or 1999, will exceed fiscal 1998 expenses by approximately 25%.



<PAGE>


     Selling, general and administrative

     Selling,   general  and   administrative   ("SG&A")  expenses   represented
approximately  24% of total  operating  expenses  (excluding the cost of product
sales,  royalties and write-off of in-process technology purchased) in 1998, 28%
in 1997 and 10% in 1996. SG&A increased by  approximately  77% from 1997 to 1998
due  principally to a full year of expenses  associated with the sales force and
other marketing personnel. Spending increases from 1996 to 1997 were due chiefly
to increasing staff levels (approximately 214%) and staff-related  expenditures,
certain  premarketing  and advertising  and promotion costs  associated with the
launch of VIRACEPT in March 1997 and other costs associated with a growing sales
and marketing  infrastructure.  Agouron  Pharmaceuticals  anticipates that total
SG&A  expenses  will  increase  by  approximately  40%  in  fiscal  1999  due to
increasing  sales and marketing  activities and the support of VIRACEPT phase IV
marketing studies.

     Royalties

     Agouron  Pharmaceuticals'  obligation to share VIRACEPT  profits with JT is
reflected in royalty expense for 1998 and represents approximately 19% of United
States  product  sales.  Royalties  in fiscal 1997 were not  significant.  It is
anticipated  that royalty expense for fiscal 1999 will approximate 24% to 25% of
United States product sales.

     Write-off of in-process technology purchased

     In 1997, the Company  acquired  Alanex,  a research  company engaged in the
discovery of drug leads  through the  high-speed  screening of diverse  chemical
libraries  designed by  computational  methods and  generated  by  combinatorial
chemistry. Alanex was acquired in a purchase transaction through the issuance of
approximately  1,992,000  equivalent shares  (including  548,000 for options and
warrants) of the  Company's  common stock valued at  approximately  $61,000,000,
plus $1,300,000 of related  acquisition  costs. The purchase price was allocated
to various tangible and intangible assets and either capitalized  (approximately
$4,800,000) or expensed  (approximately  $57,500,000)  as in-process  technology
based on an independent valuation of the Alanex assets,  technology and research
programs at the date of acquisition.

     Interest and other income

     Interest  income  increased  by 1%  from  1997  to  1998.  Interest  income
increased by  approximately  23% from 1996 to 1997 due  principally  to a higher
average  investment  portfolio  balance  resulting  from  the July  1996  public
offering,  receipt of  $9,000,000  in license  fees from Roche  (January  1997),
significantly  increased  contract  funding from JT and the exercise of employee
stock options.  Agouron  Pharmaceuticals  anticipates  that,  absent  additional
revenue sources or a significant change in interest rates,  fiscal 1999 interest
income will be less than that of fiscal 1998.



<PAGE>


     Interest expense

     Interest expense increased in 1998 from 1997 due to borrowings under a line
of credit  which  was used to  partially  fund  quarterly  royalties  paid to JT
throughout  the  year.   Interest  expense   decreased  in  1997  from  1996  by
approximately  38%  due  to  a  decreasing  level  of  debt  and  capital  lease
obligations from year to year.

     Income tax provision (benefit)

     The income tax  provision  in 1998 has been  computed  using an  effective,
combined  federal  and  state  rate of 36%.  The cash  obligation  of such  1998
provision  has been mostly  offset by the  utilization  of deferred  tax assets.
Based on its 1998 pre-tax  profit and its estimates for future  taxable  income,
Agouron  Pharmaceuticals  believes it is more likely than not that its  deferred
tax assets  (comprised  mostly of net operating loss  carryforwards,  deductions
generated  by the  exercise of stock  options,  and  research  credits)  will be
realized and has,  therefore,  recorded the full tax benefit of its deferred tax
assets.  Agouron  Pharmaceuticals'  accumulated  net deferred tax assets totaled
approximately  $55,900,000  and  $64,100,000 at June 30, 1997 and 1998.  Agouron
Pharmaceuticals  anticipates  that its effective income tax rate for fiscal 1999
will be less than 10%.  Such  decrease from fiscal 1998 is attributed to greater
expected  availability of R&D tax credits due to the anticipated increase in R&D
spending  plus  the  anticipated  reduction  in R&D  contract  revenues  and the
utilization of tax losses from Oncology Division ("Oncology  Division" or "OD"),
a division of the Company.


Year 2000

     The Year 2000 issue  results from  computer  programs and systems that were
created  to  accept  only  two  digit  dates.  Such  systems  may not be able to
distinguish  20th century  dates from 21st century  dates.  This could result in
miscalculations  and system  failures.  The Company has  established a Year 2000
project  team  that  is  currently   reviewing  computer  systems  and  computer
controlled  equipment  that could be affected by this issue.  Additionally,  the
Company has made initial contact with all of its significant  external  business
partners to  determine  the extent to which the Company is  vulnerable  to their
failures and to ascertain Year 2000  compliance and risk. The Company  estimates
that the inventory and assessment of internal systems and material third parties
will be completed by the end of calendar 1998.

     The Company is in the process of upgrading its enterprise  business system.
Once upgraded, the system will be Year 2000 compliant.  The estimated completion
date of this upgrade is by the end of calendar 1998. The Company also expects to
both replace and upgrade  other  equipment and systems.  The Company  expects to
complete such changes by the end of fiscal 1999,  and to complete  validation by
the end of  calendar  1999.  While the total cost to  upgrade  or  replace  such
systems is not known at this time, the Company  believes such cost will not have
a material effect on the Company's business,  financial position,  or results of
operation.

     At this time the Company has not initiated the  formulation  of contingency
plans. The  determination of the necessity for contingency plans will be made by
the end of calendar 1998.



<PAGE>



Liquidity and Capital Resources

     Prior to fiscal 1998,  Agouron  Pharmaceuticals  relied  principally on the
Company's equity financings and corporate  collaborations to fund its operations
and capital  expenditures.  In fiscal  1998,  due  primarily  to the  successful
commercialization of VIRACEPT, operating activities have provided $25,437,000 of
cash  compared  with  using  $57,961,000  in fiscal  1997.  Commercial  sales of
VIRACEPT  for  1997  and  1998  resulted  in  gross  margins  of   approximately
$32,370,000 and $236,654,000.

     At June 30,  1998,  Agouron  Pharmaceuticals  had net  working  capital  of
approximately $125,933,000, an increase of $11,565,000 over June 30, 1997 levels
due  principally  to Agouron  Pharmaceuticals'  pre-tax  profit of  $46,157,000,
partially  offset by  $24,610,000 of funding for Oncology  Division.  Individual
working capital components  significantly  impacted by the  commercialization of
VIRACEPT  include  trade  accounts  receivable  (an  increase  of  $18,416,000),
inventories  (an  increase of  $44,906,000),  accounts  payable (an  increase of
$15,560,000) and accrued liabilities (an increase of $25,829,000,  primarily due
to accrued  royalties payable to JT and accrued license fees). It is anticipated
that these working capital  components and cash and short-term  investments will
continue to be  significantly  impacted as VIRACEPT sales increase.  At June 30,
1998,  Agouron   Pharmaceuticals  had  cash,  cash  equivalents  and  short-term
investments of approximately $87,123,000.  Agouron Pharmaceuticals believes that
its current capital resources,  existing contractual commitments and anticipated
VIRACEPT  product  sales  contribution  are  sufficient  to maintain its current
operations and to provide for the operating  requirements  of Oncology  Division
through  fiscal  1999.  This belief is based on current  research  and  clinical
development plans of Agouron Pharmaceuticals and Oncology Division,  anticipated
working capital requirements associated with the expanding  commercialization of
VIRACEPT, the current regulatory environment,  historical industry experience in
the development of therapeutic drugs and general economic conditions.



<PAGE>


AGOURON PHARMACEUTICALS, a division of Agouron Pharmaceuticals, Inc.


INDEX TO FINANCIAL STATEMENTS


Report of Independent Accountants

Combined Balance Sheet as of June 30, 1998 and 1997

Combined Statement of Income (Loss) for the years ended
           June 30, 1998, 1997 and 1996

Combined Statement of Division Equity for the
           years ended June 30, 1998, 1997 and 1996

Combined Statement of Cash Flows for the years ended
           June 30, 1998, 1997 and 1996

Notes to Combined Financial Statements

NOTE:  All schedules are omitted because they are not applicable,
       or not required,  or because the required information is included
       in the combined financial statements or notes thereto.


<PAGE>



REPORT OF INDEPENDENT ACCOUNTANTS


To the Board of Directors and Stockholders of Agouron Pharmaceuticals, Inc.

In our opinion, the accompanying combined balance sheet and the related combined
statements  of income  (loss),  of  division  equity and of cash  flows  present
fairly,   in  all  material   respects,   the  financial   position  of  Agouron
Pharmaceuticals (a division of Agouron  Pharmaceuticals,  Inc.) at June 30, 1998
and 1997,  and the results of its  operations and its cash flows for each of the
three years in the period  ended June 30, 1998,  in  conformity  with  generally
accepted   accounting   principles.   These   financial   statements   are   the
responsibility  of  the  management  of  Agouron   Pharmaceuticals,   Inc.;  our
responsibility  is to express an opinion on these financial  statements based on
our audits.  We conducted  our audits of these  statements  in  accordance  with
generally accepted auditing standards which require that we plan and perform the
audit to obtain reasonable  assurance about whether the financial statements are
free of material  misstatement.  An audit includes  examining,  on a test basis,
evidence  supporting the amounts and  disclosures  in the financial  statements,
assessing the  accounting  principles  used and  significant  estimates  made by
management,  and evaluating the overall  financial  statement  presentation.  We
believe  that our audits  provide a reasonable  basis for the opinion  expressed
above.

As  described  above  and more  fully  described  in Note 1 to  these  financial
statements,  Agouron  Pharmaceuticals is a division of Agouron  Pharmaceuticals,
Inc.; accordingly,  the combined financial statements of Agouron Pharmaceuticals
should be read in conjunction with the audited consolidated financial statements
of Agouron Pharmaceuticals, Inc.



/s/ PricewaterhouseCoopers LLP

San Diego, California
August 10, 1998




<PAGE>


AGOURON PHARMACEUTICALS, a division of Agouron Pharmaceuticals, Inc.

COMBINED BALANCE SHEET
(Dollars in thousands)
<TABLE>
<CAPTION>

                                                                                           June 30,
                                                                                      1998              1997
ASSETS
<S>                                                                             <C>              <C>
Current assets:
       Cash and cash equivalents                                                $   19,098       $    52,484
       Short-term investments                                                       68,025            38,833
       Accounts receivable, net                                                     49,703            26,707
       Inventories                                                                 103,706            58,800
       Current deferred tax assets                                                     564               500
       Other current assets                                                          4,202             2,209
                                                                                ----------       -----------

       Total current assets                                                        245,298           179,533

Property and equipment, net                                                         47,212            22,613

Deferred tax assets                                                                 64,644            56,000

Purchased intangibles                                                                3,500             4,100
                                                                                ----------       -----------

                                                                                $  360,654       $   262,246
                                                                                ==========       ===========

LIABILITIES AND DIVISION EQUITY

Current liabilities:
       Accounts payable                                                         $   44,393       $    28,833
       Accrued liabilities                                                          34,468             8,639
       Deferred revenue and advances                                                23,563            24,567
       Current deferred tax liabilities                                              1,139               600
       Loan payable and current portion of long-term debt                           15,802             2,526
                                                                                ----------       -----------

       Total current liabilities                                                   119,365            65,165
                                                                                ----------       -----------

Long-term liabilities:
       Long-term debt, less current portion                                          5,892             5,940
       Accrued rent                                                                  1,023             1,277
                                                                                ----------       -----------

       Total long-term liabilities                                                   6,915             7,217
                                                                                ----------       -----------

Division equity                                                                    234,374           189,864
                                                                                ----------       -----------
Commitments
                                                                                $  360,654       $   262,246
                                                                                ==========       ===========
</TABLE>

See accompanying notes to combined financial statements.


<PAGE>


AGOURON PHARMACEUTICALS, a division of Agouron Pharmaceuticals, Inc.

COMBINED  STATEMENT OF INCOME (LOSS) (In  thousands,  except per share  amounts)
<TABLE>
<CAPTION>

                                                                          Years ended June 30,
                                                                       1998           1997            1996
<S>                                                           <C>            <C>             <C>
Revenues:
     Product sales                                            $     409,298  $      56,969   $           0
     Contracts                                                       23,427         49,824          37,942
     License fees and royalties                                      18,352         10,000               0
                                                              -------------  -------------   -------------

                                                                    451,077        116,793          37,942
                                                              -------------  -------------   -------------
Operating expenses:
     Cost of product sales                                          172,644         24,599               0
     Research and development                                       113,132         81,293          53,763
     Selling, general and administrative                             55,876         31,653           6,142
     Royalties                                                       68,423              0               0
     Write-off of in-process technology purchased                         0         57,500               0
                                                              -------------  -------------   -------------

                                                                    410,075        195,045          59,905
                                                              -------------  -------------   -------------

Operating income (loss)                                              41,002        (78,252)        (21,963)
                                                              -------------  -------------   -------------

Other income (expenses):
     Interest and other income                                        5,907          5,873           4,776
     Interest expense                                                  (752)          (142)           (228)
                                                              -------------  -------------   -------------

                                                                      5,155          5,731           4,548
                                                              -------------  -------------   -------------

Income (loss) before income taxes                                    46,157        (72,521)        (17,415)

Income tax provision (benefit)                                       16,793        (38,287)            934
                                                              -------------  -------------   -------------

Net income (loss)                                                    29,364        (34,234)        (18,349)

Tax benefit allocated from Oncology Division                          8,023          4,290               0
                                                              -------------  -------------   -------------

Net income (loss) attributable to AP stock                    $      37,387  $     (29,944)  $     (18,349)
                                                              =============  =============   =============

Earnings per share:
     Basic                                                    $        1.22  $       (1.11)  $        (.93)
                                                              =============  =============   =============
     Diluted                                                  $        1.13  $       (1.11)  $        (.93)
                                                              =============  ==============  =============

Equivalent shares used in calculation of:
     Basic                                                           30,571         26,946          19,688
     Diluted                                                         33,214         26,946          19,688

</TABLE>




See accompanying notes to combined financial statements.



<PAGE>


AGOURON PHARMACEUTICALS, a division of Agouron Pharmaceuticals, Inc.

COMBINED STATEMENT OF DIVISION EQUITY
(Dollars in thousands)
<TABLE>
<CAPTION>






                                                                       Unrealized
                                                                       Gains (Losses)
                                                                       On
                                                                       Short-term    Accumulated
                                                           Other       Investments   Deficit      Total
<S>                                                   <C>             <C>            <C>           <C>

Balance at June 30, 1995                              $    16,203     $       --     $   ( 1,809)  $    14,394

   Equity contribution from
     Agouron Pharmaceuticals, Inc.                         82,515             --             --         82,515
   Equity contribution to Oncology
     Division                                              (1,751)            --              --        (1,751)
   Net loss                                                    --                        (18,349)      (18,349)
                                                      -----------     ----------     -----------     ----------

Balance at June 30, 1996                                   96,967             --         (20,158)       76,809

   Equity contribution from
     Agouron Pharmaceuticals, Inc.                        146,405             --              --       146,405
   Tax benefit of stock options exercised                  12,100             --              --        12,100
   Equity contribution to Oncology
     Division                                             (15,506)            --              --       (15,506)
   Net loss                                                    --             --         (34,234)      (34,234)
   Tax benefit allocated from Oncology Division                --             --           4,290         4,290
                                                      -----------     ----------    ------------    ----------

Balance at June 30, 1997                                  239,966             --         (50,102)      189,864

   Equity contribution from
     Agouron Pharmaceuticals, Inc.                         14,453             --              --        14,453
   Tax benefit of stock options exercised                  16,896             --              --        16,896
   Change in unrealized gains (losses) on
     short-term investments                                    --            384              --           384
   Equity contribution to Oncology
     Division                                             (24,610)            --              --       (24,610)
   Net income                                              29,364             --              --        29,364
   Tax benefit allocated from Oncology Division                                            8,023         8,023
                                                       ------------   ----------        ---------    ---------

Balance at June 30, 1998                              $   246,705      $     384     $   (12,715)   $  234,374
                                                       ===========     =========      ===========    =========
</TABLE>

See accompanying notes to combined financial statements.


<PAGE>


AGOURON PHARMACEUTICALS, a division of Agouron Pharmaceuticals, Inc.

COMBINED STATEMENT OF CASH FLOWS
(In thousands)
<TABLE>
<CAPTION>

                                                                                   Years ended June 30,
                                                                              1998           1997           1996
<S>                                                                   <C>            <C>            <C>

Cash flows from operating activities:
     Cash received from product sales, contracts and licenses          $   427,026    $   103,090    $    43,911
     Cash paid to suppliers, employees and service providers              (406,795)      (166,782)       (54,522)
     Interest received                                                       5,958          5,873          4,776
     Interest paid                                                            (752)          (142)          (228)
                                                                       -----------    -----------    -----------

     Net cash provided (used) by operating activities                       25,437        (57,961)        (6,063)
                                                                       -----------    -----------    -----------

Cash flows from investing activities:
     Proceeds from maturities/sales of short-term investments              147,292        127,501         59,686
     Purchases of short-term investments                                  (176,100)       (91,227)      (118,224)
     Purchase of  property and equipment                                   (31,507)       (12,372)        (3,252)
     Cost to acquire Alanex, net of cash acquired                                0            608              0
                                                                       -----------    -----------    -----------

     Net cash provided (used) by investing activities                      (60,315)        24,510        (61,790)
                                                                       -----------    -----------    -----------

Cash flows from financing activities:
     Net proceeds from issuance of common stock                             14,453         85,354         82,515
     Proceeds from credit line                                              53,600              0              0
     Principal payments on credit line, long-term debt,
       and capital leases                                                  (41,951)          (364)          (818)
     Equity contribution to Oncology Division                              (24,610)       (15,506)        (1,751)
                                                                       -----------    -----------    -----------

     Net cash provided (used) by financing activities                        1,492         69,484         79,946
                                                                       -----------    -----------    -----------

Net increase (decrease) in cash and cash equivalents                       (33,386)        36,033         12,093
Cash and cash equivalents at beginning of year                              52,484         16,451          4,358
                                                                       -----------    -----------    -----------

Cash and cash equivalents at end of year                               $    19,098    $    52,484    $    16,451
                                                                       ===========    ===========    ===========

Reconciliation  of net income  (loss) to net cash  provided  (used) by operating
  activities:
     Net income (loss) attributable to AP stock                        $    37,387    $   (28,944)   $   (18,349)
     Depreciation and amortization                                           9,087          3,910          2,411
     Write-off of in-process technology purchased                                0         57,500              0
     Provision (benefit) for deferred income taxes                          16,750        (40,510)             0
     Tax benefit allocated from Oncology Division                           (8,023)        (4,290)             0
     Net (increase) decrease in inventories                                (44,906)       (58,547)             0
     Net (increase) decrease in accounts receivable and other
       current assets                                                      (24,989)       (23,541)        (1,198)
     Net increase (decrease) in accounts payable, accrued
       liabilities, deferred revenue and advances, and other liabilities    40,131         36,461         11,073
                                                                        ----------     ----------    -----------

Net cash provided (used) by operating activities                       $    25,437    $   (57,961)   $    (6,063)
                                                                       ===========    ===========    ===========
</TABLE>

See accompanying notes to combined financial statements.


<PAGE>


AGOURON PHARMACEUTICALS, a division of Agouron Pharmaceuticals, Inc.


NOTES TO COMBINED FINANCIAL STATEMENTS


Note 1 - The Division and its significant accounting policies

The Division

     Agouron Pharmaceuticals  ("Agouron  Pharmaceuticals" or "AP") is a division
of  Agouron  Pharmaceuticals,  Inc.  (the  "Company")  which was  organized  and
incorporated  in  California  in  June  1984.  Agouron   Pharmaceuticals  is  an
integrated  pharmaceutical  company  committed  to the  discovery,  development,
manufacturing  and marketing of innovative  therapeutic  products  engineered to
inactivate  proteins  which play key roles in AIDS and other  serious  diseases.
Agouron  Pharmaceuticals,  through its own sales and marketing organization,  is
currently marketing in the United States its first drug, VIRACEPT(R) (nelfinavir
mesylate) for treatment of HIV infection.  In addition,  Agouron Pharmaceuticals
is expected to initiate a phase  II/III  pivotal  clinical  trial of  REMUNE(TM)
(AG1661),  an immune-based  therapeutic agent for treatment of HIV infection and
AIDS being  co-developed  by  Agouron  Pharmaceuticals  and The Immune  Response
Corporation ("IRC").  Further,  Agouron Pharmaceuticals has a number of programs
in progress  for  discovery or  development  of other new drugs in the fields of
viral disease and other serious diseases.  Agouron Pharmaceuticals is also using
the proprietary core drug discovery technology of Alanex Corporation ("Alanex"),
a wholly-owned  subsidiary of the Company,  to accelerate the steps necessary to
discover  small molecule drug  candidates,  from the initial  identification  of
compounds  that exhibit  activity  against  selected  biological  targets to the
progression of these compounds to drug candidates for human clinical trials.

Financial statements and allocation matters

        As a matter of policy,  the Company manages the financial  activities of
its divisions on a centralized  basis.  These financial  activities  include the
investment of surplus cash, the issuance, repayment and repurchase of short-term
and long-term debt and the issuance and  repurchase of common stock.  During the
three years ended June 30, 1998,  the Company  attributed  all of its short-term
and long-term debt to AP based upon the specific  purpose for which the debt was
incurred and the cash flow requirements of AP. Accordingly, all of the Company's
interest  expense has been allocated to AP. The Company  believes this method of
allocation to be equitable and reasonable.

     Agouron  Pharmaceuticals'   financial  statements  have  been  prepared  in
accordance  with generally  accepted  accounting  principles and, taken together
with the Company's other division,  comprise all of the accounts included in the
corresponding  consolidated  financial  statements of the Company. The financial
statements  of  each  division  reflect  the  financial  condition,  results  of
operations  and cash flows of the  businesses  included  therein.  The  combined
financial  statements  of Agouron  Pharmaceuticals  also include any accounts or
assets of the  Company  not  specifically  allocated  to the  Oncology  Division
("Oncology Division" or "OD"), a division of the Company.



<PAGE>


Principles of combination

     The combined financial statements of AP include the accounts of the Company
and its  wholly-owned  subsidiaries  except  for  its  programs  in the  area of
oncology,  which are  reflected  separately  in  Oncology  Division's  financial
statements.  All significant  intercompany  accounts and transactions  have been
eliminated.

Estimates

     The  preparation  of financial  statements  in  conformity  with  generally
accepted  accounting  principles  requires  management  to  make  estimates  and
assumptions  that affect the reported amounts of assets,  liabilities,  revenues
and expenses and related disclosures as of the date of the financial statements.
Actual results could differ from such estimates.

Cash and cash equivalents

     Agouron  Pharmaceuticals  considers  cash  equivalents  to  be  only  those
investments  which are  highly  liquid,  readily  convertible  to cash and which
mature within 90 days from date of purchase.

Short-term investments

     Short-term  investments  consist  principally  of  government or government
agency securities,  corporate notes and bonds, commercial paper and certificates
of deposit with original maturities of three to thirty-six months, and corporate
equity  securities.   Agouron  Pharmaceuticals  has  classified  its  short-term
investments as  available-for-sale.  Included in short-term  investments at June
30, 1998 and 1997 is $1,262,000 and $588,000 of accrued interest receivable.

Inventories

     Inventories  are stated at the lower of cost or market.  Cost is determined
using the first-in, first-out method.

Concentration of credit and market risk

     Agouron  Pharmaceuticals  invests its excess cash principally in marketable
securities  from a  diversified  portfolio of  institutions  with strong  credit
ratings  and,  by  policy,  limits  the  amount  of credit  exposure  at any one
institution.  These investments are generally not  collateralized  and primarily
mature within one year.  Agouron  Pharmaceuticals  has not realized any material
losses from such investments in 1998, 1997 or 1996.

Financial instruments and risk management

     Agouron Pharmaceuticals has contract manufacturing operations in Europe and
Asia. Accordingly, Agouron Pharmaceuticals from time-to-time enters into forward
contracts to manage its exposure to  fluctuations in foreign  currency  exchange
rates. At June 30, 1998, Agouron  Pharmaceuticals  had several forward contracts
with  maturities  of  less  than  six  months  to  purchase   Japanese  Yen  for
approximately $9,426,000. These contracts are designated and effective as hedges
and, accordingly, gains and losses are

<PAGE>


recognized  in the same  period  the  offsetting  gains  and  losses  of  hedged
transactions are realized and recognized.

Property and equipment

     Property and equipment is recorded at cost.  Depreciation is computed using
principally  the  straight-line  method over estimated  useful lives of three to
five years. Leasehold improvements are amortized over the life of the lease.

Purchased intangibles

     In  conjunction  with the Company's  1997  acquisition  of Alanex,  Agouron
Pharmaceuticals  has recorded  purchased  intangibles  (primarily drug discovery
technology  and  chemical  compound  libraries)  which are being  amortized on a
straight-line basis over their estimated useful lives of seven years.

Deferred revenue and advances

     Approximately  $22,414,000 of cash received from Japan Tobacco Inc.  ("JT")
has been  classified as deferred  contract  revenue and advances.  Approximately
$21,452,000  of the cash  received  from JT  represents  JT's advance of Agouron
Pharmaceuticals'  VIRACEPT development funding obligation which was completed in
March  1998.  Such  amounts are to be repaid by Agouron  Pharmaceuticals  out of
future profits, if any, generated by sales of VIRACEPT in the United States. The
balance of the payments from JT are  non-refundable  and are being recognized as
contract  revenue on a  prospective  basis  generally as  collaborative  program
expenses are incurred.

Product sales

     Agouron Pharmaceuticals ships VIRACEPT to wholesalers throughout the United
States and  recognizes  sales revenue upon  shipment.  Sales are reported net of
discounts, rebates, chargebacks and product returns.

     Also  included  in  product  sales  for 1998  and  1997  are  approximately
$50,979,000  and  $1,441,000  of sales  (at cost plus  contractually  determined
mark-ups) to F.  Hoffman-La  Roche Ltd ("Roche") of clinical and commercial drug
supplies to be used by Roche in its licensed territory.  Agouron Pharmaceuticals
receives a royalty on Roche's subsequent commercial sales of such drug supplies.

Contract revenues

     Contract revenues are earned and recognized  generally as contract research
costs are incurred  according to the  provisions of each  underlying  agreement.
Amounts  received in advance of  performance  are recorded as deferred  revenue.
Contract  milestone  payments are  recognized as revenues upon the completion of
the milestone event or requirement.



<PAGE>


License fees and royalties

     License fees are  recognized as revenue when earned as generally  evidenced
by  certain  factors  including:  receipt  of  such  fees,  satisfaction  of any
performance obligations and the non-refundable nature of such fees.

     Royalty  revenues are  recognized  based on  estimated  and actual sales of
licensed products in licensed territories.

Research and development costs

     Research and development costs are expensed in the period incurred.

Income tax provision (benefit)

     Agouron  Pharmaceuticals  records a provision  (benefit)  for income  taxes
using the liability method.  Current income tax expense  (benefit)  generally is
the amount of income taxes expected to be payable for the current year. Deferred
taxes are  recorded by applying  applicable  tax rates to  cumulative  temporary
differences  based on when and how they are  expected  to affect the tax return.
Agouron  Pharmaceuticals is included in the consolidated U.S. federal income tax
return filed by the Company. Division management and allocation policies provide
that,  as of the end of any fiscal  quarter,  any  projected  annual tax benefit
attributable  to any division that cannot be utilized by such division to offset
or reduce its current or deferred  income tax  expense may be  allocated  to the
other division(s) without any compensating  payment or allocation.  Accordingly,
all losses of Oncology  Division have been  utilized by Agouron  Pharmaceuticals
and no provision has been recorded by Oncology  Division for any fiscal year. As
it is anticipated that all deferred tax assets of the Company at present will be
realized by Agouron Pharmaceuticals,  all deferred tax assets of the Company are
currently recorded on the books of Agouron Pharmaceuticals. The realizability of
deferred tax assets is determined at the level of the Company.

Earnings (loss) per share

     Historical per share information is presented in the combined  statement of
income  (loss) based on the  anticipated  ratio of AP  equivalent  shares to the
Company's shares although AP Stock was not part of the capital  structure of the
Company for the periods presented.

     Agouron  Pharmaceuticals   computes  per  share  data  in  accordance  with
Statement of Financial  Accounting Standards No. 128 "Earnings Per Share." Basic
per share data is based upon the weighted average number of the Company's common
shares  outstanding  during a period as a result of the expected  conversion  of
each outstanding share of the Company's common stock into one share of AP Stock.
Diluted  per  share  data is  based  upon the  weighted  average  number  of the
Company's common shares outstanding and dilutive common stock equivalents during
a period.  Common stock equivalents are options under the Company's stock option
plans  which  are  included  in the  earnings  per share  computation  under the
treasury  stock  method  and  common  shares  expected  to be  issued  under the
Company's employee stock purchase plan.

<PAGE>



     Common stock  equivalents of  approximately  2,643,000 shares for 1998 were
used to calculate  diluted earnings per share.  For 1997 and 1996,  common stock
equivalents  of  approximately  3,168,000 and 2,014,000  shares were not used to
calculate  diluted  earnings  (loss) per share  because  of their  anti-dilutive
effect.  There are no reconciling  items in calculating  the numerator for basic
and diluted earnings (loss) per share for any of the periods presented.

     Earnings  (loss)  attributable to Agouron  Pharmaceuticals  would generally
equal  Agouron  Pharmaceuticals'  net income or (loss) for the  relevant  period
determined in accordance with generally accepted accounting principles in effect
at such  time,  adjusted  by the  amount of tax  benefits  allocated  to or from
Oncology  Division or other divisions  pursuant to the management and accounting
policies adopted by the Company's Board.

Statement of cash flows

     For purposes of the Statement of Cash Flows,  cash  equivalents  are highly
liquid  investments  purchased with an original maturity of ninety days or less.
Non-cash financing and investing  activities are comprised  primarily of capital
lease obligations of $1,579,000, $2,355,000 and $457,000 for 1998, 1997 and 1996
and the Company's acquisition of Alanex in 1997.





<PAGE>



Note 2 - Short-term investments

     The  cost  of  Agouron  Pharmaceuticals'  investment  portfolio  by type of
security and contractual maturity in the balance sheet is as follows:
<TABLE>
<CAPTION>

                                                                                    June 30,
                                                                                1998                1997
              (Dollars in thousands)
<S>                                                                   <C>                 <C>
              Type of security:
                  Corporate debt                                       $      46,023      $       24,401
                  U.S. Treasury and agencies                                  10,766              11,994
                  Other interest-bearing                                       9,462               2,438
                  Corporate equity                                             1,774                   0
                                                                       -------------      --------------

                                                                       $      68,025      $       38,833
                                                                       =============      ==============

              Contractual maturity:
                  Maturing in less than twelve months                  $      41,389      $       35,827
                  Maturing between twelve and
                      thirty-two months                                       26,636               3,006
                                                                       -------------      --------------

                                                                       $      68,025      $       38,833
                                                                       =============      ==============
</TABLE>

     The  cost  of  securities   sold,  if  any,  is  based  upon  the  specific
identification  method.  The net unrealized  holding gain on  available-for-sale
securities included as a separate component of stockholders'  equity at June 30,
1998 totaled $384,000. There were no material unrealized gains or losses nor any
material  differences  between the estimated fair values and costs of securities
in the investment  portfolio at June 30, 1997.  Realized gains and losses on the
disposal  of  available-for-sale  securities  during  1998  totaled  $20,000 and
$2,000,  respectively.  During  1997 such gains and losses  totaled  $12,000 and
$4,000, respectively. During 1996, such gains totaled $22,000.



<PAGE>


Note 3 - Composition of certain financial statement captions
<TABLE>
<CAPTION>


                                                                                         June 30,
                                                                                      1998            1997
(Dollars in thousands)
<S>                                                                             <C>            <C>

Accounts receivable, net:
     Trade                                                                      $   44,471     $    26,055
     Contract                                                                          813               0
     Royalties                                                                       2,339               0
     Employee                                                                          252             269
     Other                                                                           1,828             383
                                                                                ----------     -----------

                                                                                $   49,703     $    26,707
                                                                                ==========     ===========

Inventories:
     Raw materials and work in process                                          $   95,517     $    57,883
     Finished goods                                                                  8,189             917
                                                                                ----------     -----------

                                                                                $  103,706     $    58,800
                                                                                ==========     ===========

Property and equipment, net:
     Scientific instrumentation                                                 $   26,869     $    16,614
     Leasehold improvements                                                         25,135          10,804
     Computer equipment                                                             15,619           8,892
     Furniture and fixtures                                                          3,910           2,464
                                                                                ----------     -----------

                                                                                    71,533          38,774
     Less accumulated depreciation and amortization                                (24,321)        (16,161)
                                                                                ----------     -----------

                                                                                $   47,212     $    22,613
                                                                                ==========     ===========

Accrued liabilities:
     Royalties                                                                  $   21,410     $         0
     License fees                                                                    6,000               0
     Vacation                                                                        2,955           1,932
     Clinical studies                                                                1,843           3,328
     Other                                                                           2,260           3,379
                                                                                ----------     -----------

                                                                                $   34,468     $     8,639
                                                                                ==========     ===========

</TABLE>

<PAGE>


Note 4 - Significant contract arrangements

Japan Tobacco Inc.

     In February 1994, Agouron Pharmaceuticals entered into a strategic alliance
with JT in the field of anti-viral drugs for the treatment of infections  caused
by  hepatitis C and the herpes  family of viruses.  In  December  1994,  Agouron
Pharmaceuticals  added its anti-HIV drug, VIRACEPT, to the JT collaboration with
the  execution of a world-wide  development  and  licensing  agreement.  Agouron
Pharmaceuticals  and JT share  equally  the  costs  of  further  development  of
VIRACEPT.

     Currently,  Agouron  Pharmaceuticals  has  exclusive  commercial  rights to
VIRACEPT  (with the right to  sublicense)  in North America and JT has exclusive
commercial  rights to VIRACEPT (with the right to sublicense) in parts of Japan.
Agouron  Pharmaceuticals  and JT share profits and/or royalties equally from the
world-wide commercialization of VIRACEPT.

     Under the combined terms of the JT agreements,  Agouron Pharmaceuticals has
incurred  costs of  $51,898,000,  $71,825,000  and  $46,969,000  and  recognized
corresponding contract revenues of $17,359,000,  $48,886,000 and $37,197,000 for
the years ended June 30, 1998, 1997 and 1996.

Roche

     Agouron Pharmaceuticals and JT have granted Roche certain exclusive royalty
bearing  marketing  rights to  VIRACEPT  outside of North  America  and parts of
Japan. For such rights, Agouron  Pharmaceuticals has received (and recognized as
revenue)  initial  license fees and additional  product  approval  license fees.
Agouron Pharmaceuticals also receives royalties based either on Roche's sales of
VIRACEPT   or,  in   certain   circumstances,   Invirase(R)   and   Fortavase(R)
(saquinavir),  Roche's  HIV  protease  inhibitors.  VIRACEPT  license  fees  and
royalties from Roche totaled $17,852,000 and $9,000,000 for the years ended June
30, 1998 and 1997.

The Immune Response Corporation

     In June 1998,  Agouron  Pharmaceuticals  entered  into a binding  letter of
intent with The Immune  Response  Corporation  ("IRC") to  collaborate  on final
development and  commercialization of REMUNE, an immune-based  therapeutic agent
discovered  by IRC  and  currently  the  subject  of  several  clinical  studies
including a large phase III clinical  trial.  The two companies  intend to enter
promptly into a definitive  agreement and will endeavor to complete  development
and registration of REMUNE in 1999. IRC will manufacture  commercial supplies of
REMUNE, and Agouron  Pharmaceuticals will have exclusive rights to market REMUNE
in North  America,  Europe and certain other  countries.  The two companies will
share equally all profits from the  commercialization  of REMUNE in the licensed
territory.  Agouron  Pharmaceuticals  paid an initial $10,000,000 license fee to
IRC in June 1998 and also  purchased  118,256  newly issued common shares of IRC
for  $2,000,000.   Agouron   Pharmaceuticals'   development  funding  obligation
commences  October  15,  1998  and,  assuming  ongoing  successful  development,
registration and approval of REMUNE,  Agouron  Pharmaceuticals may pay to IRC up
to $53,000,000 in additional  development and milestone payments and $12,000,000
in purchases of additional IRC common stock.


<PAGE>


Shionogi & Co., Ltd.

     In June 1998,  Agouron  Pharmaceuticals  entered  into a binding  letter of
intent with  Shionogi & Co.,  Ltd.  ("Shionogi")  to develop  and  commercialize
AG1549,  a  second-generation  non-nucleoside  reverse  transcriptase  inhibitor
("NNRTI") for the treatment of HIV infection.  Discovered by Shionogi, AG1549 is
currently the subject of several  clinical  trials  evaluating  its dose and its
concomitant use with other antiretroviral treatments.

     Agouron  Pharmaceuticals has exclusive world-wide rights to the development
and commercialization of AG1549 except in Japan, South Korea and Taiwan. Agouron
Pharmaceuticals  paid an initial  $10,000,000  license fee in June 1998. Agouron
Pharmaceuticals may pay, assuming ongoing successful  development,  registration
and  approval  of  AG1776,  additional  license  fees of up to  $30,000,000.  In
addition, Agouron Pharmaceuticals will pay Shionogi royalties based on sales, if
any, of AG1549.

Japan Energy Corporation

     In June 1998, Agouron  Pharmaceuticals entered into an agreement with Japan
Energy Corporation ("JE") to develop and commercialize  AG1776, a novel protease
inhibitor  for the  treatment  of HIV  infection.  Agouron  Pharmaceuticals  has
exclusive  world-wide rights to the development and  commercialization of AG1776
except in Japan,  South Korea,  North Korea and Taiwan; JE will manufacture bulk
compound  for use in final drug  product.  Agouron  Pharmaceuticals  incurred an
initial $6,000,000 license fee in June 1998.  Agouron  Pharmaceuticals  may pay,
assuming ongoing  successful  development,  registration and approval of AG1776,
additional   license  fees  of  up  to   $20,000,000.   In   addition,   Agouron
Pharmaceuticals will pay JE royalties based on sales, if any, of AG1776.



<PAGE>


Note 5 - Long-term debt

     Long-term debt and capital lease obligations are as follows:
<TABLE>
<CAPTION>

                                                                                    June 30,
                                                                                  1998              1997
(Dollars in thousands)
<S>                                                                             <C>               <C>
Notes payable,  secured  with  personal  property and a  certificate  of deposit;
     interest at CD rate plus 1.5%,
     paid off in June 1998.                                                     $    0            $  142

Capital leases with interest rates between 5.86% and 16.5%,
     maturing at various dates through June 2003.                                3,214             2,462

Line of credit, $20,000,000 secured; interest at bank reference
      rate or LIBOR plus 1.5%, expiring September 30, 1998.                     15,000                 0

Unsecured,  non-interest  bearing,  term  obligation;  face value of $4,500,000;
     discounted  to an  8.95%  effective  rate,  includes  imputed  interest  of
     $548,000
     due June 28, 2001.                                                          3,480             3,194

Term obligation for tenant improvements, interest
     at 11% per annum, payable in monthly installments,
     paid off in October 1997.                                                       0             2,668
                                                                         -------------    --------------

Total long-term debt and capital lease obligations                              21,694             8,466

Current portion                                                                (15,802)           (2,526)
                                                                         -------------    --------------

                                                                         $       5,892    $        5,940
                                                                         =============    ==============
</TABLE>

     Maturities of long-term debt,  excluding  capital  leases,  are as follows:
1999 - $15,000,000;  2000- $0; and 2001 - $4,500,000,  less imputed  interest of
$1,020,000.


<PAGE>


Note 6 - Income taxes

(Dollars in thousands)

     The components of the provision (benefit) for income taxes are as follows:
<TABLE>
<CAPTION>

                                                          1998         1997         1996
                                                     ---------    ---------     --------
<S>                                                 <C>           <C>           <C>
          Year ended June 30,
          Current:
              Federal                                $       0    $       0     $      0
              State                                         43            1            1
              Foreign                                        0        1,222          933
                                                     ---------    ---------     --------
                                                            43        1,223          934
                                                     ---------    ---------     --------

          Deferred:
              Federal                                   16,518      (33,510)           0
              State                                        232       (6,000)           0
              Foreign                                        0            0            0
                                                     ---------    ---------     --------
                                                        16,750      (39,510)           0
                                                     ---------    ---------     --------

                                                     $  16,793    $ (38,287)    $    934
                                                     =========    =========     ========
</TABLE>

     The income tax  reconciliation  from  income  (loss)  before  income  taxes
computed at the federal  statutory  rate (34%) to  Agouron's  actual  income tax
provision is as follows: <TABLE> <CAPTION>

          Year ended June 30,                             1998         1997         1996
                                                     ---------    ---------     --------
<S>                                                  <C>          <C>           <C>
          Tax at U.S. federal statutory rate         $  15,693    $ (24,657)    $ (5,921)
          State taxes, net of federal benefit              181            1            1
          Foreign taxes                                      0        1,222          933
          Purchase accounting book/tax basis differences     0       19,781            0
          Change in valuation allowance                      0      (42,449)       5,864
          Other                                            919          332           57
          Adjustments to carryover amounts                   0        7,483            0
                                                     ---------    ---------     --------
              Subtotal                                  16,793      (38,287)         934
          Tax benefits to/from other division           (8,023)      (4,290)           0
                                                     ---------    ---------     --------

                                                     $   8,770    $ (42,577)    $    934
                                                     =========    =========     ========
</TABLE>

    Agouron Pharmaceuticals' deferred tax assets and liabilities are as follows:
<TABLE>
<CAPTION>

                                                             June 30
                                                          1998         1997
<S>                                                  <C>         <C>

          Book and tax depreciation/amortization
            differences                              $   5,743    $     710
          Accrued liabilities                            1,607        1,097
          Net operating loss carryforwards              17,494       26,081
          Tax credits                                    3,859        4,113
          Allocated tax benefits to/from other
            divisions                                   39,062       25,798
          Other                                         (3,696)      (1,899)
                                                     ---------    ---------
                                                        64,069       55,900
          Valuation allowance                                0            0
                                                     ---------    ---------
          Deferred taxes, net                        $  64,069    $  55,900
                                                     =========    =========
</TABLE>
<PAGE>

     Agouron  Pharmaceuticals  has not recorded  current  provisions  for United
States  federal  income  taxes due to net  operating  losses  for tax  reporting
purposes. At June 30, 1998, Agouron  Pharmaceuticals had allocated net operating
loss   carryforwards  for  federal  tax  reporting   purposes  of  approximately
$150,000,000 expiring from 2000 to 2013. The net operating loss includes the tax
benefit related to the exercise of stock options,  which benefit was recorded to
common  stock.  Agouron  Pharmaceuticals  has federal  research and  development
credit  carryforwards of  approximately  $4,800,000 at June 30, 1998. The future
utilization of net operating loss  carryforwards for federal income tax purposes
may be impacted by the issuance of additional equity securities.

     Due to California's  partial conformity with federal  provisions  regarding
net operating loss and research and development credit  carryforwards,  and as a
result of Agouron Pharmaceuticals' use of certain state tax planning strategies,
for state tax reporting purposes at June 30, 1998, Agouron  Pharmaceuticals  has
no net operating  loss  carryforwards  and has research and  development  credit
carryforwards of approximately $2,200,000. Such credits do not expire.

     Based on its 1998  operating  results and its  estimates of future  taxable
income,  Agouron  Pharmaceuticals  believes that it is more likely than not that
its deferred tax assets  (comprised  mostly of net operating loss  carryforwards
and research  credits) will be realized and has therefore  recorded the full tax
benefit of its deferred tax assets as of June 30, 1998.

     Foreign tax expense  represents  certain  withholding taxes associated with
collaboration payments from JT.



<PAGE>



Note 7 - Division equity

AP Stock

     AP Stock will  represent a separate  series of the Company  Common Stock if
the  Company's  Divisional  Stock  Proposal  is  approved  and  such  series  is
designated  by the Board.  Additional  AP Stock may be issued  from time to time
upon exercise of stock options or at the discretion of the Company's Board.

Oncology Equity Line

     The  Company   Board  has   approved  a  cash  equity  line  from   Agouron
Pharmaceuticals  to  Oncology  Division.  Amounts  drawn  under the equity  line
automatically convert to Oncology Division Stock on a periodic basis. Such stock
will be  distributed  to  holders  of AP  Stock  on an  annual  basis.  All cash
allocated from Agouron Pharmaceuticals to Oncology Division has been recorded as
an equity contribution.




<PAGE>



Note 8 - Commitments

     Certain  scientific  instrumentation,  computers  and other  equipment  are
subject to leases which are classified as capital  leases.  At June 30, 1998 and
1997,  $4,331,000  ($3,408,000,  net) and $2,895,000  ($2,629,000,  net) of such
leased equipment are included in property and equipment.

     Rental  expenses   (principally  for  leased   facilities  under  long-term
operating  lease  commitments)  were  $5,031,000,  $3,509,000 and $2,548,000 for
1998, 1997 and 1996. Future minimum payments for capital and operating leases at
June 30, 1998 are as follows: <TABLE> <CAPTION>

                                                      Capital Leases               Operating Leases
(Dollars in thousands)
<S>                                                   <C>                           <C>
           1999                                       $        819                  $        7,472
           2000                                                812                           5,507
           2001                                                818                           5,314
           2002                                                578                           3,943
           2003                                                243                           2,630
           Thereafter                                            0                           2,047
                                                      ------------                  --------------

           Total minimum lease payments                      3,270                  $       26,913
                                                                                    ==============
           Less amount representing interest                   (56)
                                                      ------------

           Obligations under capital leases           $      3,214
                                                      ============

</TABLE>


     Funding for the Oncology Division

     The  development  of Oncology  Division  products will require  substantial
funds.  Agouron  Pharmaceuticals  intends  to fund the  operations  of  Oncology
Division  for the  foreseeable  future.  The  Company's  Board has  approved the
allocation of up to $25,000,000 in cash from Agouron Pharmaceuticals to Oncology
Division under an equity line which is expected to be exchanged for OD shares.

     Other

     The Company is involved in certain legal proceedings  generally  incidental
to its normal  business  activities.  While the outcome of any such  proceedings
cannot be  accurately  predicted,  the Company  does not  believe  the  ultimate
resolution of any such existing matters should have a material adverse effect on
its financial position or results of operations.


<PAGE>


Note 9 - Alanex acquisition

     In April 1997, the Company executed a merger  agreement with Alanex,  which
now operates as a wholly-owned  subsidiary of the Company.  For all  outstanding
shares of Alanex common stock and related  options and  warrants,  approximately
2,000,000 shares of the Company's  common stock were issued,  subject to certain
restrictions.  Such shares had an aggregate fair market value on the measurement
date of  approximately  $61,000,000  and  transaction  costs were  approximately
$1,300,000.   Of  the  total  purchase  price  (including   transaction  costs),
$57,500,000 was allocated (as more fully described below) to certain  intangible
assets and expensed as in-process  technology and  approximately  $4,800,000 was
allocated to certain tangible and intangible assets and capitalized.

     The  identifiable  intangibles of Alanex include  several drug research and
discovery programs, a proprietary drug discovery technology, a chemical compound
library and an assembled work force.  These intangibles were valued using either
a replacement cost approach (work force, library and proprietary  technology) or
an income approach (research programs). Values assigned to the chemical compound
library and proprietary drug discovery technology have been capitalized, as such
intangibles are of a general nature and may have a number of alternative  future
uses. Values assigned to the drug discovery programs have been expensed, as such
programs  are  pursuing  specific  drug  targets  or  chemical  compounds,   the
technological  feasibility of which having not been demonstrated,  and there may
be no  alternative  future uses for such  targets or chemical  compounds  if the
programs are ultimately less than successful.

     Agouron Pharmaceuticals' statement of income (loss) includes the results of
operations  related to the  acquisition  since April  1997.  The  following  are
unaudited  pro-forma  results  of  operations  as if the  transaction  had  been
consummated on July 1, 1995: <TABLE> <CAPTION>


(In thousands except for per share amounts.)

         Year ended June 30,                                               1997              1996
                                                                        (unaudited)       (unaudited)
<S>                                                                   <C>              <C>

         Revenues                                                      $     123,602    $      44,379
                                                                       =============    =============

         Net income (loss) attributable to AP stock                    $      27,138    $     (18,247)
                                                                       =============    =============

         Earnings (loss) per share                                     $        1.01    $        (.93)
                                                                       =============    =============

</TABLE>



<PAGE>



Note 10 - Quarterly financial data (unaudited)

(In thousands, except for
per share amounts)
<TABLE>
<CAPTION>

                                                                   Quarter Ended
                                         September 30     December 31         March 31          June 30
                                        -------------     -------------    -------------     ----------
<S>                                     <C>               <C>              <C>               <C>

1997
Product sales                           $           0     $           0    $      13,401     $      43,568
Gross margin from product sales                     0                 0            7,378            24,992
Net loss attributable to AP stock             (12,021)           (9,883)            (987)           (7,053)
Earnings (loss) per share:
  Basic(3)                                       (.48)            (.37)             (.04)             (.25)(1)
  Diluted(3)                                     (.48)            (.37)             (.04)             (.25)(1)

1998
Product sales                           $      79,502     $      91,800    $     111,950     $     126,046
Gross margin from product sales                45,429            53,858           62,730            74,637
Net income attributable to AP stock             8,649             7,758           19,758             1,222
Earnings (loss) per share:
  Basic(3)                                        .29              .25               .64               .04(2)
  Diluted(3)                                      .26              .23               .60               .04(2)
</TABLE>


(1)  During  the  fourth  quarter of 1997,  Agouron  Pharmaceuticals  recorded a
     write-off  of  $57,500,000  ($2.03  per  share)  of  in-process  technology
     associated  with  the  acquisition  of  Alanex,  partially  offset  by  the
     realization  of  $43,800,000  ($1.54  per  share) of  deferred  tax  assets
     associated  with Agouron  Pharmaceuticals'  expectation  of future  taxable
     income.

(2)  During  the  fourth  quarter  of  1998,  Agouron  Pharmaceuticals  incurred
     in-licensing  costs  of  $26,000,000  (tax-effected  $.50  per  share)  for
     commercial rights to three development stage anti-HIV products.

(3)  Historical  Agouron  Pharmaceuticals  per share information is presented as
     the same capital structure as the Company although Agouron Pharmaceuticals'
     Stock  was not part of the  Company's  capital  structure  for any of these
     periods.



<PAGE>



Note 11 - Related party transactions

Overview

     The Company allocates corporate general and administrative and research and
development  expenses  and income  taxes in  accordance  with  certain  policies
adopted  by the  Company's  Board of  Directors.  Such  policies  may be further
modified or rescinded  by action of the  Company's  Board of  Directors  who may
adopt  additional  policies,  without  approval of the Agouron  Pharmaceuticals'
stockholders, subject only to their fiduciary duty to such stockholders.

Shared Services

     Agouron  Pharmaceuticals  operates as a division of the Company with access
to the  Company's  personnel,  financial  resources,  facilities  and  extensive
capabilities in research and development,  manufacturing,  clinical  development
and  administrative,  the costs of which are  allocated  to each  division  in a
reasonable  and  consistent  manner based on  utilization by the division of the
services to which such costs relate. Management believes that such allocation is
a reasonable estimate of such expenses.

Access to Technology and Know-How

     Agouron  Pharmaceuticals  has free access to all technology and know-how of
the  Company  that may be useful,  subject  to any  obligations  or  limitations
applicable to the Company. The costs of developing this technology remain in the
business unit responsible for its development.



<PAGE>


                                     ANNEX V

                                ONCOLOGY DIVISION
                             DESCRIPTION OF BUSINESS

General

     Since  the  incorporation  of  the  Company  in  June  1984,  the  oncology
department within Agouron,  now formed as the Oncology  Division,  has committed
itself  to  the   discovery,   development,   manufacturing   and  marketing  of
small-molecule  drugs engineered to inactivate  proteins which play key roles in
cancer.  Oncology Division is currently conducting pivotal phase II/III clinical
trials for AG3340 for treatment of lung and prostate cancer.  Further,  Oncology
Division has a number of programs in progress for  discovery or  development  of
other new drugs in the field of cancer.

Research and Development Programs

     Oncology Division's research and development  programs focusing on the area
of cancer applies the Company's core technologies of three-dimensional structure
based drug design and high-throughput  screening of chemical libraries generated
by computation-directed combinatorial chemistry.

     The  following  table  outlines  the  status  of  various  programs  in the
Company's  Oncology  Division  research  and  development  portfolio.   Oncology
Division is pursuing  some of these  programs  independently,  while  others are
being undertaken in collaboration with other companies.

                                    Research
                                       and
                                   Development
     Program              Indication                             Stage

Cancer

     AG3340               Solid Tumors                         Phase II/III
     AG3433               Solid Tumors                         Preclinical
     AG2034               Solid Tumors                         Phase I
     AG2037               Solid Tumors                         Preclinical
     cdk Inhibitors       Solid Tumors                         Research
     PARP(1) Inhibitors   Solid Tumors                         Research
     VEGF Inhibitors      Solid Tumors                         Research
     GnRH Antagonist      Hormone-Dependent Solid Tumors       Research

(1)  In collaboration with Cancer Research Campaign Technology Ltd.


<PAGE>



Overview

     The  development  of new drugs for treatment of cancer is a key  scientific
and commercial focus of the Company. Cancer is the second leading cause of death
in the United States and most  developed  nations.  While much progress has been
made in the  treatment of certain  forms of cancer,  most  existing  anti-cancer
drugs display limited  efficacy and  significant  toxicities that restrict their
clinical usefulness.  As a result, there remains a critical need for anti-cancer
drugs  which  are  less  toxic  and  more  efficacious   either  as  tumoricidal
(tumor-killing) or tumoristatic (tumor-controlling) agents.

     The Company's  Oncology  Division drug discovery and  development  programs
pursue inhibitors of the following enzymes:  matrix  metalloproteases  ("MMPs");
glycinamide ribonucleotide  formyltransferase ("GART"); cyclin dependent kinases
("cdk");  gonadotropin releasing hormone ("GnRH");  poly (ADP ribose) polymerase
("PARP"); and vascular endothelial growth factor ("VEGF") kinase.

MMP Inhibitors: AG3340

     AG3340 is an orally delivered antiangiogenesis drug designed to inhibit the
growth,  invasion and metastasis of solid tumors by inactivating certain members
of a family of enzymes known as MMPs.  AG3340  selectively  inhibits  those MMPs
believed to be involved in tumor progression. A primary goal of clinical studies
of AG3340 is to determine  whether  this  distinctive  selectivity  results in a
favorable clinical profile of safety and efficacy.

     In fiscal 1998,  Oncology Division completed two phase I studies of AG3340.
In one phase I study,  AG3340  was  administered  orally  twice  daily  (BID) in
patients with advanced cancer, including lung, prostate,  kidney, and colorectal
cancers as well as sarcoma and melanoma.

     A separate phase I study found that AG3340 in combination with chemotherapy
was generally well tolerated among patients with advanced  prostate cancer whose
disease was resistant to hormonal therapies.

     In  preclinical  studies,  AG3340 has been  shown to inhibit  angiogenesis.
AG3340   was  also   found  to  be  a  potent   inhibitor   of  the   growth  of
chemotherapy-resistant  human  non-small cell lung cancer tumors in mice.  Here,
administration  of AG3340 resulted in a dose-dependent  decrease in tumor growth
by up to 65% as compared to controls.

     In May 1998,  Oncology  Division  initiated phase II/III clinical trials in
patients with  advanced lung or prostate  cancer.  Oncology  Division  presently
retains all rights to AG3340 in the fields of cancer and ophthalmology.

     Oncology  Division is also conducting  preclinical  research on a stable of
third-generation  MMP  inhibitors,  including  AG3433,  which  has even  greater
selectivity than AG3340 for those MMPs related to cancer.



<PAGE>


GART Inhibitors: AG2034 and AG2037

     AG2034 is a potent, selective inhibitor of GART believed to be a key enzyme
in the  biochemical  pathway  through  which  tumor  cells  synthesize  purines,
essential components of DNA. With the exception of liver cells, all normal human
tissues  obtain  purines  through an  alternative  pathway  (the purine  salvage
pathway).  Oncology  Division  believes that inhibitors of GART will show a high
degree of selectivity for tumor cells and less  significant bone marrow toxicity
than other chemotherapeutic agents. Oncology Division is completing dose-ranging
phase I clinical trials that will establish an appropriate dose for AG2034.

     AG2037 was designed to have markedly reduced binding to the membrane folate
binding  protein  ("mFBP")  because tight binding to this receptor is one likely
source of the toxicity  observed  with  lometrexol,  the first  molecule in this
class to be tested  clinically by Eli Lilly and Company  (assays of mFBP binding
have been routine for compounds generated in this program).  AG2037 shows potent
inhibition of GART as a monoglutamate  and can be  polyglutamylated.  Because of
its potent  weaker  binding to mFBP,  AG2037  access is restricted to only those
cells with  reduced  folate  carrier.  Preclinical  studies have shown that GART
inhibitors are  potentially  cytotoxic  (kills cells) to at least certain cancer
cell types with mutan p53 genes, a common  genetic  abnormality in human cancer.
Oncology Division retains all commercial rights to any compounds  resulting from
its GART inhibitor programs.

cdk4/cdk2 Inhibitors

     Cdks are enzymes that play key roles in regulating the cell cycle.  Certain
members of this family of enzymes,  such as cdk4 and cdk2,  have been implicated
as drivers of cells from a normally  quiescent  state to a highly  proliferative
characteristic of human cancer. Oncology Division is engaged in a drug discovery
program aimed at the design of selective small-molecule drugs with the potential
to inhibit  the  activity of such cdks and  therefore  block the  transition  of
cancer  cells into their  proliferative  phase.  Oncology  Division  retains all
commercial rights to compounds resulting from this program.

PARP

     PARP is an enzyme which is activated by DNA-strand  breaks and is important
in the  immediate  cellular  response  to DNA  damage.  The  activity of PARP is
involved  in  recruiting  repair  enzymes to the site of DNA damage so that cell
division can proceed faithfully.  Inhibition of PARP has profound effects on the
survival  of  cells  following  exposure  to  DNA-damaging  agents;  thus,  PARP
inhibitors may be useful in conjunction  with chemo- and radio- therapy to treat
tumors.  PARP inhibitors  discovered at Oncology Division have been confirmed as
chemopotentiating  agents in cells and preliminary  testing in tumors in animals
is underway.  Oncology  Division has  exclusive  commercial  rights in compounds
resulting  from this  program,  which are being  pursued in  collaboration  with
Cancer Research Campaign Technology, Ltd. <PAGE>

VEGF Inhibitors

     The process known as angiogenesis (the formation of new blood vessels) is a
key  factor in the  maintenance  and  progression  of  several  disease  states,
including  the  metastasis of malignant  tumors.  The ability of cancer cells to
carry out  angiogenesis  depends in part upon the activity of a protein known as
VEGF,  which,  by  binding  to a  receptor  (known as kdr) on the cell  surface,
triggers  the  development  of growth  factor  of  endothelial  cells.  Oncology
Division is engaged in a program to design drugs that block the kdr receptor for
VEGF and, therefore, compromise the ability of tumors to carry out a key process
in angiogenesis.  Oncology  Division retains all commercial  rights to compounds
resulting from this program.

GnRH Antagonist Program

     GnRH is a  decapeptide  that is  synthesized  in the brain and controls the
pituitary and gonadal hormones that regulate fertility.  (In women, this peptide
is  required  for  successful  ovulation  and,  in  men,  it  is  necessary  for
spermatogenesis.) Oncology Division, through the Company's Alanex subsidiary, is
currently  pursuing a program to discover  certain orally active  small-molecule
drugs  to  treat  two  areas  of  human  disease  that  depend  on GnRH  action:
endometriosis and sex-hormone  dependent  tumors.  Oncology Division retains all
commercial rights to compounds resulting from this program.

Business Relationships/Research and Development Agreements

     Oncology  Division has funded its research and  development  primarily from
working capital  generated from both private and public sales of Agouron equity,
collaborative arrangements and the financial contribution resulting from product
sales.  Oncology  Division has an ongoing program of business  development which
may,  from time to time,  lead to the  establishment  of the  Oncology  Division
related corporate collaborations in addition to those noted below.

HLR

     In June 1996,  Oncology  Division  granted  Hoffman-La  Roche  Inc.  and F.
Hoffman-La Roche Ltd (collectively  "HLR") development rights in two anti-cancer
drugs  and  agreed  to  collaborate  with  HLR  on  an  additional   early-stage
anti-cancer  drug  discovery  program.  In  return  for  such  rights,  HLR paid
$15,000,000  in initial  license  fees and agreed to bear 80% of certain  future
development  costs and to provide  annual  research  support  to the  Company of
$3,000,000.  In  December  1997,  Oncology  Division  and HLR agreed to end this
anti-cancer  research  and  development  collaboration.  Oncology  Division  has
regained all rights to the anti-cancer  drugs previously within the scope of the
collaboration.

Human Resources

     As of July 28, 1998, the Company had 991 employees.  It is anticipated that
approximately  200 of these  will be  directly  engaged  in the  conduct  of the
Oncology Division business.






<PAGE>



        MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND
                             RESULTS OF OPERATIONS

Overview

     This discussion contains  forward-looking  statements.  Such statements are
subject to certain risks and  uncertainties  which could cause actual results to
differ  materially  from  those  projected.  See  "Important  Factors  Regarding
Forward-Looking  Statements"  attached  as  Exhibit 99 to the  Company's  annual
report on Form 10-K for the period ended June 30, 1998 and  incorporated  herein
by  reference.  Readers  are  cautioned  not to place  undue  reliance  on these
forward-looking  statements which speak only as of the date hereof.  The Company
undertakes  no  obligation  to publicly  release the result of any  revisions to
these  forward-looking  statements  which  may be  made  to  reflect  events  or
circumstances   after  the  date  hereof  or  to  reflect  the   occurrence   of
unanticipated events.

     Oncology  Division  ("Oncology  Division"  or "OD"),  a division of Agouron
Pharmaceuticals,  Inc.  (the  "Company")  is  committed  to  the  discovery  and
development of human pharmaceuticals  targeting cancer.  Operations to date have
been  principally  funded from the  Company's  working  capital and OD's various
collaborative arrangements. Net losses for the fiscal years ended June 30, 1998,
1997 and 1996 were  $24,233,000,  $12,862,000 and $1,174,000.  It is anticipated
that net operating  losses will continue and will possibly  increase  through at
least the next two years.

Results of Operations

     Contract and license revenues

     Collaborative  research and development  agreements  with Hoffman-La  Roche
Inc.  and  F.  Hoffman-La   Roche  Ltd   (collectively   "HLR")   accounted  for
substantially all of Oncology Division's contract and license revenues for 1998,
1997  and  1996.   Total  contract  and  license  revenues  for  1998  increased
approximately 1% from 1997. Total contracts and license revenues  decreased from
1996 to 1997  approximately 15% due principally to the receipt of $15,000,000 in
1996 for initial development rights for two anti-cancer drugs.

     In December 1997, the Company agreed to end its  collaboration  with HLR in
the field of cancer. As a result of termination,  Oncology Division has regained
all rights to its anti-cancer  drugs within the scope of the HLR  collaboration.
Oncology Division anticipates no contract revenues for fiscal 1999.

     Research and development expenses

     Research and development  ("R&D") spending  increased by approximately  40%
from 1997 to 1998 and 56% from 1996 to 1997 due generally to increasing  average
R&D staff levels and staff-related  expenditures and increased  expenditures for
human clinical trial development  activities for certain anti-cancer  compounds.
Oncology Division anticipates that total R&D expenses in fiscal 1999 will exceed
fiscal 1998 expenses by approximately 21%.


<PAGE>



General and administrative expenses

     General and administrative ("G&A") expenses represented approximately 5% of
total  operating  expenses in 1998, 5% in 1997 and 10% in 1996. G&A increased by
approximately  66% from 1997 to 1998 due  principally to increasing  development
efforts.  Spending  decreases from 1996 to 1997 were due chiefly to concentrated
Company  efforts  to  complete  development  of a  major  non-oncology  program.
Oncology  Division  anticipates  that total G&A  expenses  for fiscal  1999 will
approximate the amounts recorded in fiscal 1998.

Year 2000

     The Year 2000 issue  results from  computer  programs and systems that were
created  to  accept  only  two  digit  dates.  Such  systems  may not be able to
distinguish  20th century  dates from 21st century  dates.  This could result in
miscalculations  and system  failures.  The Company has  established a Year 2000
project  team  that  is  currently   reviewing  computer  systems  and  computer
controlled  equipment  that could be affected by this issue.  Additionally,  the
Company has made initial contact with all of its significant  external  business
partners to  determine  the extent to which the Company is  vulnerable  to their
failures and to ascertain Year 2000  compliance and risk. The Company  estimates
that the inventory and assessment of internal systems and material third parties
will be completed by the end of calendar 1998.

     The Company is in the process of upgrading its enterprise  business system.
Once upgraded, the system will be Year 2000 compliant.  The estimated completion
date of this upgrade is by the end of calendar 1998. The Company also expects to
both replace and upgrade  other  equipment and systems.  The Company  expects to
complete such changes by the end of fiscal 1999,  and to complete  validation by
the end of  calendar  1999.  While the total cost to  upgrade  or  replace  such
systems is not known at this time, the Company  believes such cost will not have
a material effect on the Company's business,  financial position,  or results of
operation.

     At this time the Company has not initiated the  formulation  of contingency
plans. The  determination of the necessity for contingency plans will be made by
the end of calendar 1998.


Liquidity and Capital Resources

     Historically,  Oncology  Division has relied  principally on the Company to
fund its operations and capital expenditures. At June 30, 1998, Oncology Divison
had net working  capital of  approximately  $1,795,000,  an increase of $377,000
over June 30, 1997 levels.  The development of Oncology  Division  products will
require substantial funds. Agouron Pharmaceuticals ("Agouron Pharmaceuticals" or
"AP"),  a division of the Company,  intends to fund the  operations  of Oncology
Division  for the  foreseeable  future.  The  Company's  Board has  approved the
allocation of up to $25,000,000 in cash from Agouron Pharmaceuticals to Oncology
Division  under an equity line which is expected to be  exchanged  for  Oncology
Division Stock.


<PAGE>



     The  Company  believes  that  its  current  capital   resources,   existing
contractual  commitments and anticipated product sales contribution from Agouron
Pharmaceuticals are sufficient to maintain its current operations and to provide
for the operating  requirements of Oncology  Division  through fiscal 1999. This
belief is based on current research and clinical  development  plans of Oncology
Division and Agouron  Pharmaceuticals,  anticipated working capital requirements
associated  with expanding  product  commercialization,  the current  regulatory
environment,  historical  industry  experience in the development of therapeutic
drugs and general economic conditions.





<PAGE>



ONCOLOGY DIVISION, a division of Agouron Pharmaceuticals, Inc.


INDEX TO FINANCIAL STATEMENTS

Report of Independent Accountants

Combined Balance Sheet as of June 30, 1998 and 1997

Combined Statement of Operations for the years ended
           June 30, 1998, 1997 and 1996

Combined Statement of Division Equity for the
           years ended June 30, 1998, 1997 and 1996

Combined Statement of Cash Flows for the years ended
           June 30, 1998, 1997 and 1996

Notes to Combined Financial Statements

NOTE: All schedules are omitted because they are not applicable,
      or not required,  or because the required information is included
      in the combined financial statements or notes thereto.


<PAGE>



REPORT OF INDEPENDENT ACCOUNTANTS


To the Board of Directors and Stockholders of Agouron Pharmaceuticals, Inc.

     In our opinion,  the  accompanying  combined  balance sheet and the related
combined statements of operations,  of division equity and of cash flows present
fairly, in all material respects, the financial position of Oncology Division (a
division of Agouron  Pharmaceuticals,  Inc.) at June 30, 1998 and 1997,  and the
results of its  operations and its cash flows for each of the three years in the
period ended June 30, 1998, in conformity  with  generally  accepted  accounting
principles.  These financial statements are the responsibility of the management
of Agouron Pharmaceuticals, Inc.; our responsibility is to express an opinion on
these financial statements based on our audits. We conducted our audits of these
statements  in accordance  with  generally  accepted  auditing  standards  which
require that we plan and perform the audit to obtain reasonable  assurance about
whether the financial  statements  are free of material  misstatement.  An audit
includes  examining,  on a test  basis,  evidence  supporting  the  amounts  and
disclosures in the financial  statements,  assessing the  accounting  principles
used and  significant  estimates made by management,  and evaluating the overall
financial  statement  presentation.   We  believe  that  our  audits  provide  a
reasonable basis for the opinion expressed above.

     As described  above and more fully  described in Note 1 to these  financial
statements,  Oncology Division is a division of Agouron  Pharmaceuticals,  Inc.;
accordingly,  the combined  financial  statements of Oncology Division should be
read in  conjunction  with the  audited  consolidated  financial  statements  of
Agouron Pharmaceuticals, Inc.



/s/ PricewaterhouseCoopers LLP

San Diego, California
August 10, 1998




<PAGE>


ONCOLOGY DIVISION, a division of Agouron Pharmaceuticals, Inc.

COMBINED BALANCE SHEET
(Dollars in thousands)
<TABLE>
<CAPTION>

                                                                                           June 30,
                                                                                      1998              1997
ASSETS
<S>                                                                             <C>              <C>
Current assets:
       Accounts receivable                                                      $    1,638       $     4,668
       Other current assets                                                          1,045                 0
                                                                                ----------       -----------

                                                                                $    2,683       $     4,668
                                                                                ==========       ===========

LIABILITIES AND DIVISION EQUITY

Current liabilities:
       Accrued liabilities                                                      $      888       $       250
       Deferred revenue                                                                  0             3,000
                                                                                ----------       -----------

       Total current liabilities                                                       888             3,250

Division equity                                                                      1,795             1,418
                                                                                ----------       -----------


Commitments

                                                                                $    2,683       $     4,668
                                                                                ==========       ===========


</TABLE>


See accompanying notes to combined financial statements.


<PAGE>


ONCOLOGY DIVISION, a division of Agouron Pharmaceuticals, Inc.

COMBINED STATEMENT OF OPERATIONS
(In thousands, except per share amounts)
<TABLE>
<CAPTION>


                                                                          Years ended June 30,
                                                                       1998           1997            1996
<S>                                                             <C>             <C>            <C>
Revenues:
     Contract and license                                       $    15,428     $   15,270     $    18,013

Operating expenses:
     Research and development                                        37,525         26,844          17,247
     General and administrative                                       2,136          1,288           1,940
                                                              -------------  -------------   -------------
                                                                     39,661         28,132          19,187
                                                              -------------  -------------   -------------

Net loss                                                      $     (24,233) $     (12,862)  $      (1,174)
                                                              =============  =============   =============

Net loss per share:
     Basic and Diluted                                        $       (3.17) $       (1.91)  $        (.24)
                                                              =============  =============   =============

Equivalent shares used in calculation of:
     Basic and Diluted                                                7,643          6,737           4,922



</TABLE>

See accompanying notes to combined financial statements.



<PAGE>


ONCOLOGY DIVISION, a division of Agouron Pharmaceuticals, Inc.

COMBINED STATEMENT OF DIVISION EQUITY
(Dollars in thousands)
<TABLE>
<CAPTION>





                                                                                      Accumulated
                                                                             Other        Deficit          Total
<S>                                                                    <C>            <C>            <C>

Balance at June 30, 1995                                               $    59,910    $   (61,713)   $    (1,803)

   Equity contribution from Agouron
    Pharmaceuticals                                                          1,751                         1,751
   Net loss                                                                  --            (1,174)        (1,174)
                                                                       -----------    -----------    -----------

Balance at June 30, 1996                                                    61,661        (62,887)        (1,226)

   Equity contribution from Agouron
    Pharmaceuticals                                                         15,506                        15,506
   Net loss                                                                     --        (12,862)       (12,862)
                                                                       -----------    -----------    -----------

Balance at June 30, 1997                                                    77,167        (75,749)         1,418


   Equity contribution from Agouron
    Pharmaceuticals                                                         24,610                        24,610
   Net loss                                                                     --        (24,233)       (24,233)
                                                                       -----------    -----------    -----------

Balance at June 30, 1998                                               $   101,777     $  (99,982)   $     1,795
                                                                       ===========    ===========    ===========


</TABLE>

See accompanying notes to combined financial statements.


<PAGE>


ONCOLOGY DIVISION, a division of Agouron Pharmaceuticals, Inc.

COMBINED STATEMENT OF CASH FLOWS
(In thousands)
<TABLE>
<CAPTION>

                                                                                   Years ended June 30,
                                                                              1998           1997           1996
<S>                                                                    <C>           <C>             <C>

Cash flows from operating activities:
     Cash received from contracts and licenses                         $    15,458    $    13,602    $    17,465
     Cash paid to suppliers and service providers                          (40,068)       (29,108)       (19,216)
                                                                       -----------    ------------   -----------

     Net cash provided (used) by operating activities                      (24,610)       (15,506)        (1,751)
                                                                       -----------    -----------    -----------

Cash flows from investing activities:

     Net cash provided (used) by investing activities                            0              0              0
                                                                       -----------    -----------    -----------

Cash flows from financing activities:
     Equity contribution from Agouron Pharmaceuticals                       24,610         15,506          1,751
                                                                       -----------    -----------    -----------

     Net cash provided (used) by financing activities                       24,610         15,506          1,751
                                                                       -----------    -----------    -----------

Net increase (decrease) in cash and cash equivalents                             0              0              0
Cash and cash equivalents at beginning of year                                   0              0              0
                                                                       -----------    -----------    -----------

Cash and cash equivalents at end of year                               $         0    $         0    $         0
                                                                       ===========    ===========    ===========

Reconciliation of net loss to net cash provided (used) by operating activities:
     Net loss                                                          $   (24,233)   $   (12,862)   $    (1,174)
     Net (increase) decrease in accounts receivable and other
       current assets                                                        1,985         (4,668)             0
     Net increase (decrease) in accrued liabilities and
       deferred revenue                                                     (2,362)         2,024           (577)
                                                                       -----------    -----------    -----------

Net cash provided (used) by operating activities                       $   (24,610)   $   (15,506)   $    (1,751)
                                                                       ===========    ===========    ===========
</TABLE>

See accompanying notes to combined financial statements.


<PAGE>


ONCOLOGY DIVISION, a division of Agouron Pharmaceuticals, Inc.


NOTES TO COMBINED FINANCIAL STATEMENTS


Note 1 - The Division and its significant accounting policies

The Division

     Oncology  Division  ("Oncology  Division" or "OD") is a division of Agouron
Pharmaceuticals,  Inc. (the "Company")  which was organized and  incorporated in
California  in June 1984.  Oncology  Division  is engaged in the  discovery  and
development of innovative therapeutic products engineered to inactivate proteins
which play key roles in cancer.

Financial statements and allocation matters

     As a matter of policy, the Company manages the financial  activities of its
divisions  on a  centralized  basis.  These  financial  activities  include  the
investment of surplus cash, the issuance, repayment and repurchase of short-term
and long-term debt and the issuance and  repurchase of common stock.  During the
three years ended June 30, 1998, the Company  attributed  none of its short-term
and long-term debt to OD based upon the specific  purpose for which the debt was
incurred  and  the  cash  flow  requirements  of OD.  Accordingly,  none  of the
Company's  interest  expense has been allocated to OD. The Company believes this
method of allocation to be equitable and reasonable.

     Oncology Division's  financial  statements have been prepared in accordance
with  generally  accepted  accounting  principles  and,  taken together with the
Company's  other  division,  comprise  all  of  the  accounts  included  in  the
corresponding  consolidated  financial  statements of the Company. The financial
statements  of  each  division  reflect  the  financial  condition,  results  of
operations and cash flows of the businesses included therein.

Principles of combination

     The combined financial statements of Oncology Division include the accounts
for all of the Company's programs in the area of oncology.

Estimates

     The  preparation  of financial  statements  in  conformity  with  generally
accepted  accounting  principles  requires  management  to  make  estimates  and
assumptions  that affect the reported amounts of assets,  liabilities,  revenues
and expenses and related disclosures as of the date of the financial statements.
Actual results could differ from such estimates.


<PAGE>


Contract and license revenues

     Contract revenues are earned and recognized  generally as contract research
costs are incurred  according to the  provisions of each  underlying  agreement.
Amounts  received in advance of  performance  are recorded as deferred  revenue.
Contract  milestone  payments are  recognized as revenues upon the completion of
the milestone event or requirement.

     License fees are  recognized as revenue when earned as generally  evidenced
by  certain  factors  including:  receipt  of  such  fees,  satisfaction  of any
performance obligations and the non-refundable nature of such fees.

Research and development costs

     Research and development costs are expensed in the period incurred.

Income tax provision (benefit)

     Oncology Division records a provision  (benefit) for income taxes using the
liability method.  Current income tax expense (benefit)  generally is the amount
of income taxes expected to be payable for the current year.  Deferred taxes are
recorded by applying  applicable tax rates to cumulative  temporary  differences
based on when and how they are  expected  to  affect  the tax  return.  Oncology
Division is included in the consolidated U.S. federal income tax return filed by
the Company. Division management and allocation policies provide that, as of the
end of any fiscal quarter,  any projected annual tax benefit attributable to any
division  that  cannot be  utilized  by such  division  to offset or reduce  its
current or deferred income tax expense may be allocated to the other division(s)
without  any  compensating  payment or  allocation.  Accordingly,  all losses of
Oncology Division have been utilized by Agouron Pharmaceuticals and no provision
has been recorded by Oncology Division for any fiscal year. As it is anticipated
that all  deferred  tax assets of the  Company at present  will be  realized  by
Agouron  Pharmaceuticals,  all deferred tax assets of the Company are  currently
recorded  on the  books of  Agouron  Pharmaceuticals  and  none on the  books of
Oncology Division. The realizability of deferred tax assets is determined at the
level of the Company.


Net loss per share

     Historical  net loss per share  information  is  presented  in the combined
statement of operations based on the anticipated  ratio of OD equivalent  shares
to the Company's shares although OD Stock was not part of the capital  structure
of the Company for the periods presented.

     Oncology  Division  computes per share data in accordance with Statement of
Financial  Accounting  Standards  No. 128  "Earnings Per Share." Basic per share
data is based upon  one-quarter of the weighted  average number of the Company's
common shares outstanding during a period as a result of the expected conversion
of each  outstanding  share of the  Company's  common  stock into  approximately
one-quarter share of OD Stock.  Diluted per share data is based upon one-quarter
of the weighted  average number of the Company's  common shares  outstanding and
dilutive common stock equivalents during a period.  Common stock equivalents are
options  under the  Company's  stock  option  plans  which are  included  in the
earnings per share computation under the treasury stock method and common shares
expected to be issued under the Company's employee stock purchase plan.

<PAGE>




     For 1998, 1997 and 1996, common stock equivalents of approximately 661,000,
792,000 and 504,000 shares were not used to calculate  diluted  earnings  (loss)
per share because of their anti-dilutive  effect. There are no reconciling items
in calculating the numerator for basic and diluted earnings (loss) per share for
any of the periods presented.

     Earnings  (loss)  attributable  to Oncology  Division would generally equal
Oncology  Division's net income or (loss) for the relevant period  determined in
accordance with generally accepted accounting principles in effect at such time,
adjusted  by  the  amount  of  tax   benefits   allocated  to  or  from  Agouron
Pharmaceuticals  pursuant to the management and accounting  policies  adopted by
the Company's Board.

Commitments

     The Company is involved in certain legal proceedings  generally  incidental
to its normal  business  activities.  While the outcome of any such  proceedings
cannot be  accurately  predicted,  the Company  does not  believe  the  ultimate
resolution of any such existing matters should have a material adverse effect on
its financial position or results of operations.


<PAGE>


Note 2 - Significant contract arrangements

     HLR

     In June 1996,  Oncology  Division  granted  Hoffman-La  Roche  Inc.  and F.
Hoffman-La Roche Ltd (collectively  "HLR") development rights in two anti-cancer
drugs  and  agreed  to  collaborate  with  HLR  on  an  additional   early-stage
anti-cancer  drug  discovery  program.  In  return  for  such  rights,  HLR paid
$15,000,000  in initial  license  fees and agreed to bear 80% of certain  future
development costs and to provide annual research support to Oncology Division of
$3,000,000.  In  December  1997,  Oncology  Division  and HLR agreed to end this
anti-cancer  research  and  development  collaboration.  Oncology  Division  has
regained all commercial  rights to the anti-cancer  drugs previously  within the
scope of the collaboration.

     Under  the terms of the  anti-cancer  agreements  with HLR which  have been
terminated,  Oncology Division incurred costs of $23,486,000 and $17,854,000 and
recognized  corresponding  contract  revenues of $15,428,000 and $14,270,000 for
the years ended June 30, 1998 and 1997.



<PAGE>



Note 3 - Related party transactions

Overview

     The Company allocates corporate general and administrative and research and
development  expenses  and income  taxes in  accordance  with  certain  policies
adopted  by the  Company's  Board of  Directors.  Such  policies  may be further
modified or rescinded  by action of the  Company's  Board of  Directors  who may
adopt additional policies, without approval of Oncology Division's stockholders,
subject only to their fiduciary duty to such stockholders.

Shared Services

     Oncology  Division operates as a division of the Company with access to the
Company's personnel, financial resources,  facilities and extensive capabilities
in  research  and   development,   manufacturing,   clinical   development   and
administration,  the  costs  of  which  are  allocated  to  each  division  in a
reasonable  and  consistent  manner based on  utilization by the division of the
services to which such costs relate. Management believes that such allocation is
a reasonable estimate of such expenses.

Access to Technology and Know-How

     Oncology  Division  has free access to all  technology  and know-how of the
Company that may be useful, subject to any obligations or limitations applicable
to the Company.  The costs of developing this technology  remain in the business
unit responsible for its development.





<PAGE>


Note 4 - Division equity

OD Stock

     OD Stock will represent a separate series of the Company's  Common Stock if
the  Company's  Divisional  Stock  Proposal  is  approved  and  such  series  is
designated  by the Board.  Additional  OD Stock may be issued  from time to time
upon exercise of stock options or at the discretion of the Company's Board.

Exchange of OD Stock

     If OD Stock is issued,  Agouron  Pharmaceuticals  will have the right,  and
under certain circumstances,  the obligation, to exchange each outstanding share
of OD Stock  for cash or shares of AP Stock at a 25%  premium  over fair  market
value of OD Stock on the date of exchange.

Oncology Equity Line

     The Company Board has approved a $25,000,000  cash equity line from Agouron
Pharmaceuticals  to Oncology  Division.  Amounts drawn under the equity line are
expected to be exchanged into shares of OD Stock on a periodic basis.


<PAGE>

                                     PART II

                     INFORMATION NOT REQUIRED IN PROSPECTUS

Item 20.  Indemnification of Directors and Officers

         Section  317  of  the  California  General  Corporation  Law  generally
provides  indemnification  to officers  and  directors  of the  Company  against
expenses,  judgments,  fines  and  amounts  paid  in  settlement  under  certain
conditions and subject to certain limitations.

         Article VII of the articles of  incorporation  of the Company  provides
that  liability of the  directors of the Company for monetary  damages  shall be
eliminated to the fullest extent  permissible  under  California  law.  Further,
Article VIII of the articles of incorporation  authorizes the Company to provide
indemnification  of agents (as defined in Section 317) for breach of duty to the
Company and its shareholders through bylaw provisions or through agreements with
such agents, or both, in excess of the  indemnification  otherwise  permitted by
Section 317, subject to the limits on such excess  indemnification  set forth in
Section 317.

         Section  3.15 of the bylaws of the  Company  authorizes  the Company to
indemnify any person who was or is a party, or is threatened to be made a party,
to any  proceeding  (other  than  actions  by or in the right of the  Company to
procure a judgment  in its  favor) by reason of the fact that such  person is or
was an agent of the Company, against expenses, judgments, fines, settlements and
other  amounts  actually  and  reasonably   incurred  in  connection  with  such
proceeding  if such  person  acted in good  faith  and in a manner  such  person
reasonably  believed to be in the best  interests of the  Company.  Section 3.15
also authorizes the Company to indemnify any person who was or is a party, or is
threatened to be made a party, to any threatened, pending or completed action by
or in the right of the  Company to procure a judgment  in its favor by reason of
the fact that such  person is or was an agent of the  Company  against  expenses
actually and reasonably  incurred by such person in connection  with the defense
or settlement of such action if such person acted in good faith.

         Any  indemnification  under  Section  3.15 is to be made by the Company
only if authorized in the specific case upon determination that  indemnification
of the  agent is  proper  in the  circumstances  because  the  agent has met the
applicable  standard of conduct  required by Paragraphs  3.15.2 or 3.15.3 of the
bylaws.

         Pursuant to authorization  provided under the articles of incorporation
and the bylaws,  the Company has entered into  indemnification  agreements  with
each of its  present  directors.  The  Company  has also  entered  into  similar
agreements  with  certain  of the  Company's  officers  who are  not  directors.
Generally,  the  indemnification  agreements  attempt  to  provide  the  maximum
protection  permitted by California  law as it may be amended from time to time.
Moreover,   the  indemnification   agreements  provide  for  certain  additional
indemnification.  Under such additional indemnification provisions,  however, an
individual  will not  receive  indemnification  for  judgments,  settlements  or
expenses if he or she is found  liable to the Company  (except to the extent the
court  determines he or she is fairly and  reasonably  entitled to indemnity for
expenses) for  settlements  not approved by the Company or for  settlements  and
expenses if the  settlement  is not approved by the court.  The  indemnification
agreements  provide  for the  Company to advance to the  individual  any and all
reasonable   expenses   (including   legal  fees  and   expenses)   incurred  in
investigating  or defending  any such action,  suit or  proceeding.  In order to
receive an advance of expenses, the individual must submit to the Company copies
of invoices presented to him or her for such expenses. Also, the individual must
repay  such  advances  upon a  final  judicial  decision  that  he or she is not
entitled to indemnification.

         Section  3.15 of the  bylaws  also  provides  that,  in the  event of a
determination by the Board of Directors of the Company to purchase insurance for
certain of its agents,  the Company  shall  purchase and  maintain  insurance on
behalf of any such agent against  liability  asserted against or incurred by the
agent in such capacity or arising out of the agent's status,  whether or not the
Company would have the power to indemnify the agent against such liability under
the provisions of Section 3.15. <PAGE>

         The Company has in effect  directors and officers  liability  insurance
policies which insure directors and officers of the Company. The policies expire
on October 13, 1998.  Although  the Company  intends to renew the policies on or
before their  expiration  date, there can be no assurance that the policies will
be renewed on terms acceptable to the Company. Under the policies, the directors
and  officers of the Company are insured  against  loss arising from claims made
against  them  due to  wrongful  acts  while  acting  in  their  individual  and
collective capacities as directors and officers,  subject to certain exclusions.
In  addition,  the  policies  insure the  Company  against  losses for which its
directors and officers are entitled to  indemnification,  subject to a retention
of $250,000 payable by the Company.  The policies are "claims made" policies and
provide  coverage  only for losses  arising out of claims first made against the
Company and reported to the insurer during the policy period.

Item 21.  Exhibits and Financial Statement Schedules

(a)   Exhibits

         Number                     Description

         3.1      Form of Restated Articles of Incorporation  (Included as Annex
                  II to the Proxy  Statement/Prospectus  contained  in Part I of
                  this Registration Statement).

         5.1      Opinion of Pillsbury Madison & Sutro LLP.
                    (To be filed by amendment)

         8.1      Opinion of Pillsbury Madison & Sutro LLP.
                    (To be filed by amendment)

         10.1     Amended and Restated 1996 Stock Option Plan.
                    (Included as Annex VI to the Proxy
                    Statement/Prospectus contained in Part I of this
                    Registration Statement.) (To be filed by amendment)

         10.2     Amended and Restated Employee Stock Purchase Plan.
                    (Included as Annex VII to the Proxy Statement/Prospectus
                     contained in Part I of this Registration Statement.)
                    (To be filed by amendment)

         23.1     Consent of PricewaterhouseCoopers LLP.

         23.2     Consent of Pillsbury Madison & Sutro LLP.
                    (Included in their opinions set forth as
                    Exhibits 5.1 and  8.1)

         24.1       Power of  Attorney.  (Contained  on  Signature  Page of this
                    Registration Statement.)

         99.1      Form of Proxy. (To be filed by amendment)


(b)  Financial  Statement  Schedules (Included in Annex IV, Annex V and Annex VI
     to  the  Proxy  Statement  and  Prospectus  contained  in  Part  I of  this
     Registration Statement).


Item 22.  Undertakings

         The  undersigned  registrant  hereby  undertakes  that, for purposes of
determining  any liability  under the  Securities  Act of 1933 (the  "Securities
Act"),  each filing of the registrant's  annual report pursuant to Section 13(a)
or Section 15(d) of the  Securities  Exchange Act of 1934 (the  "Exchange  Act")
(and, where applicable,  each filing of an employee benefit plan's annual report
pursuant to Section 15(d) of the Exchange Act) that is incorporated by reference
in the registration statement shall be deemed to be a new registration statement
relating to the securities offered therein,  and the offering of such securities
at that time shall be deemed to be the initial bona fide offering thereof.
<PAGE>

         The undersigned registrant hereby undertakes to respond to requests for
information  that is incorporated  by reference into the prospectus  pursuant to
Items 4, 10(b), 11 or 13 of this Form within one business day of receipt of such
request,  and to send the  incorporated  documents  by first class mail or other
equally prompt means.  This includes  information  contained in documents  filed
subsequent to the effective date of the registration  statement through the date
of responding to the request.

        The  undersigned  registrant  hereby  undertakes to supply by means of a
post-effective  amendment  all  information  concerning a  transaction,  and the
company  being  acquired  involved  therein,  that  was not the  subject  of and
included in the registration statement when it became effective.

        Insofar as indemnification  for liabilities arising under the Securities
Act may be  permitted to  directors,  officers  and  controlling  persons of the
registrant pursuant to the foregoing  provisions,  or otherwise,  the registrant
has been advised that in the opinion of the Securities  and Exchange  Commission
such indemnification is against public policy as expressed in the Securities Act
and is, therefore,  unenforceable. In the event that a claim for indemnification
against such  liabilities  (other than the payment by the registrant of expenses
incurred or paid by a director,  officer or controlling person of the registrant
in the successful defense of any action, suit or proceeding) is asserted by such
director,  officer or controlling person in connection with the securities being
registered, the registrant will, unless in the opinion of its counsel the matter
has been  settled by  controlling  precedent,  submit to a court of  appropriate
jurisdiction the question whether such  indemnification  by it is against public
policy as  expressed  in the  Securities  Act and will be  governed by the final
adjudication of such issue.

        The registrant  hereby  undertakes as follows:  that prior to any public
reoffering of the securities  registered  hereunder  through use of a prospectus
which is a part of this  registration  statement,  by any person or party who is
deemed to be an  underwriter  within  the  meaning  of Rule  145(c),  the issuer
undertakes that such reoffering  prospectus will contain the information  called
for by the applicable  registration  form with respect to reofferings by persons
who may be deemed underwriters, in addition to the information called for by the
other Items of the applicable form.

        The  registrant  undertakes  that  every  prospectus  (i)  that is filed
pursuant to the paragraph immediately  preceding,  or (ii) that purports to meet
the  requirements of section  10(a)(3) of the Act and is used in connection with
an offering  of  securities  subject to Rule 415,  will be filed as a part of an
amendment  to the  registration  statement  and  will  not be  used  until  such
amendment is  effective,  and that,  for purposes of  determining  any liability
under the Securities Act, each such post-effective  amendment shall be deemed to
be a new registration  statement relating to the securities offered therein, and
the offering of such  securities  at that time shall be deemed to be the initial
bona fide offering thereof.

<PAGE>

                                   SIGNATURES

     Pursuant to the  requirements of the Securities Act of 1933, the registrant
has duly caused to this S-4 Registration Statement to be signed on its behalf by
the undersigned,  thereunto duly authorized,  in the City of San Diego, State of
California, on the 12th day of August, 1998.

                          AGOURON PHARMACEUTICALS, INC.

                                       By: /s/ Gary E. Friedman
                                           Gary E. Friedman, Esq.
                                           Vice President, General Counsel, and
                                           Secretary



<PAGE>



                                POWER OF ATTORNEY

     KNOW ALL MEN BY THESE PRESENTS,  that each person whose  signature  appears
below  constitutes  and  appoints  Peter  Johnson,  Steven S. Cowell and Gary E.
Friedman,  or any of  them,  his or her true and  lawful  attorneys-in-fact  and
agents, with full power of substitution and  resubstitution,  for him or her and
in his or her name,  place and stead, in any and all capacities,  to sign any or
all  amendments  to  this  registration  statement,   including   post-effective
amendments, and to file the same, with all exhibits thereto, and other documents
in connection  therewith with the Securities and Exchange  Commission,  granting
unto said  attorneys-in-fact  and  agents  full  power and  authority  to do and
perform each and every act and thing  requisite  and necessary to be done in and
about the premises,  as fully and to all intents and purposes as he or she might
or  could  do  in  person,   hereby  ratifying  and  confirming  all  that  said
attorneys-in-fact  and agents, or their substitute or substitutes,  may lawfully
do or cause to be done by virtue hereof.

     Pursuant  to  the   requirements  of  the  Securities  Act  of  1933,  this
Registration  Statement  has been signed below by the  following  persons in the
capacities and on the dates indicated.

Signature                        Title                            Date

/s/ Peter Johnson                President, Chief Executive    August 13, 1998
- -----------------------------    Officer and Director
Peter Johnson

/s/ Steven S.Cowell              Corporate Vice President,     August 13, 1998
- -----------------------------    Finance and Chief Financial Officer
Steven S. Cowell

/s/ Gary E. Friedman             Corporate Vice President,     August 13, 1998
- -----------------------------    General Counsel, Secretary and Director
Gary E. Friedman

/s/ John N. Abelson              Director                      August 13, 1998
- -----------------------------
John N. Abelson

/s/ Patricia M. Cloherty         Director                      August 13, 1998
- -----------------------------
Patricia M. Cloherty

/s/ A.E. Cohen                   Director                      August 13, 1998
- -----------------------------
A.E. Cohen

/s/ Michael E. Herman            Director                      August 13, 1998
- -----------------------------
Michael E. Herman

/s/ Irving S. Johnson            Director                      August 13, 1998
- -----------------------------
Irving S. Johnson

/s/ Antonie T. Knoppers          Director                      August 13, 1998
- -----------------------------
Antonie T. Knoppers

/s/ Melvin I. Simon              Director                      August 13, 1998
- -----------------------------
Melvin I. Simon



<PAGE>



                                  EXHIBIT INDEX


         Number                     Description

         3.1               Form of Restated Articles of Incorporation
                              (Included as Annex II to the Proxy Statement/
                              Prospectus contained in Part I of this
                              Registration Statement.)  
                              (To be filed by amendment)

         5.1               Opinion of Pillsbury Madison & Sutro LLP.
                              (To be filed by amendment)

         8.1               Opinion of Pillsbury Madison & Sutro LLP.
                              (To be filed by amendment)

         10.1              Amended and Restated 1996 Stock Option Plan.
                              (Included as Annex VI to the Proxy
                              Statement/Prospectus contained in Part I of this
                              Registration Statement.)
                              (To be filed by amendment)

         10.2              Amended and Restated Employee Stock Purchase Plan.
                              (Included as Annex VII to the Proxy
                              Statement/Prospectus contained in Part I of this
                              Registration Statement.)
                              (To be filed by amendment)

         23.1              Consent of PricewaterhouseCoopers LLP.

         23.2              Consent of Pillsbury Madison & Sutro LLP.
                              (Included in their opinions set forth as
                              Exhibits 5.1 and  8.1)

         24.1              Power of Attorney
                              (Contained on Signature Page of this
                              Registration Statement.)

         99.1              Form of Proxy (To be filed by amendment)


                                                                    EXHIBIT 23.1

                       CONSENT OF INDEPENDENT ACCOUNTANTS

We  hereby  consent  to the  use in the  Prospectus  constituting  part  of this
Registration  Statement on Form S-4 of Agouron  Pharmaceuticals,  Inc.,  Agouron
Pharmaceuticals and Oncology Division of our report dated July 16, 1998 relating
to the  financial  statements of Agouron  Pharmaceuticals,  Inc. and our reports
dated  August 10,  1998  relating  to  the   financial   statements  of  Agouron
Pharmaceuticals and Oncology Division, which appear in such Prospectus.  We also
consent to the reference to us under the heading "Experts" in such Prospectus.

PRICEWATERHOUSECOOPERS LLP

San Diego, California
August 12, 1998






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