ALZA CORP
SC 13E3, 1997-08-27
PHARMACEUTICAL PREPARATIONS
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<PAGE>
 
                      SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, DC 20549
                                 _____________
                                SCHEDULE 13E-3

                       RULE 13E-3 TRANSACTION STATEMENT

      (PURSUANT TO SECTION 13(e) OF THE SECURITIES EXCHANGE ACT OF 1934)

                       THERAPEUTIC DISCOVERY CORPORATION
- --------------------------------------------------------------------------------
                             (Name of the Issuer)

                               ALZA CORPORATION
- --------------------------------------------------------------------------------
                     (Name of Person(s) Filing Statement)

                     CLASS A COMMON STOCK, PAR VALUE $0.01
- --------------------------------------------------------------------------------
                        (Title of Class of Securities)

                                   883376105
- --------------------------------------------------------------------------------
                     (CUSIP Number of Class of Securities)

    Bruce Cozadd, 950 Page Mill Road, Palo Alto, CA  94304, (650) 494-5000
- --------------------------------------------------------------------------------
  (Name, Address and Telephone Number of Person Authorized to Receive Notices
          and Communications on Behalf of Person(s) Filing Statement)

This statement is filed in connection with (check the appropriate box):

(a)   [ ]    The filing of solicitation materials or an information statement
             subject to Regulation 14A, Regulation 14C, or Rule 13e-3(c) under
             the Securities Exchange Act of 1934.

(b)   [ ]    The filing of a registration statement under the Securities Act of
             1933.

(c)   [ ]    A tender offer.

(d)   [X]    None of the above.

Check the following box if the soliciting materials or information statement
referred to in checking box (a) are preliminary copies. [ ]

                           Calculation of Filing Fee
- --------------------------------------------------------------------------------
Transaction Valuation/1/:  $100 million        Amount of Filing Fee/2/:  $20,000
- --------------------------------------------------------------------------------

- -----------------------
     /1/ For purposes of calculating the filing fee only. This calculation is
based upon the purchase price of $100 million for all issued and outstanding
shares of Class A Common Stock of the Issuer to be acquired pursuant to this 
transaction.

     /2/ The amount of the filing fee, calculated in accordance with Section
13 of the Securities Exchange Act of 1934, as amended, equals 1/50th of one
percent of the aggregate value of cash to be paid by ALZA Corporation for such
Class A Common Stock.
<PAGE>
 
[ ]  Check box if any part of the fee is offset as provided by Rule 0-11(a)(2)
and identify the filing with which the offsetting fee was previously paid.
Identify the previous filing by registration statement number, or the form or
schedule and the date of its filing.

Amount previously paid:___________________      Filing party:__________________
                       
Form or registration no.:_________________      Date filed:____________________
 

                                       2
<PAGE>
 
Introduction.
- -------------

     This Schedule 13E-3 Transaction Statement (the "Statement") relates to
the exercise by ALZA Corporation, a Delaware corporation ("ALZA"), of its
option to purchase all issued and outstanding shares of Class A Common Stock
of Therapeutic Discovery Corporation, a Delaware corporation ("TDC").

     This Statement is being filed by ALZA. Notwithstanding this Statement, ALZA
disclaims application of Rule 13e-3 under the Securities Exchange Act of 1934,
as amended, to the transaction reported herein.

Item 1.
- -------

     (a)  The issuer of the class of equity security which is the subject of
          this filing and the address of its principal executive offices is:

                    Therapeutic Discovery Corporation
                    1454 Page Mill Road
                    Palo Alto, CA  94303-0806

     (b)  The exact title of the class of security which is the subject of this
          filing is Class A Common Stock, par value $0.01, of TDC. The number
          of shares of Class A Common Stock outstanding as of August 25, 1997,
          the most recent practicable date, is 7,734,424. As of that date,
          there were also options to purchase 395,000 shares of Class A Common
          Stock immediately exercisable. The approximate number of holders of
          record of such Class A Common Stock as of August 25, 1997, the most
          recent practicable date, is 5,604.

     (c)  The principal market in which the Class A Common Stock is being traded
          is the Nasdaq National Market. The range of high and low bid
          quotations for the Class A Common Stock for each quarterly period
          during the past two years is:

<TABLE>
<CAPTION>
                     Period               High         Low
                     ------               ----         ---       
               <S>                       <C>          <C>
               June 30, 1995             7.875        6.00
               September 30, 1995        7.75         6.75
               December 31, 1995         7.25         6.75
               March 31, 1996           10.625        7.125
               June 30, 1996             9.875        8.875
</TABLE>

                                       3
<PAGE>
 
<TABLE>
               <S>                       <C>          <C>
               September 30, 1996       10.00         8.00
               December 31, 1996        11.375        9.375
               March 31, 1997           11.375       10.50
               June 30, 1997            11.375       10.625
</TABLE>

     (d)  To the best of ALZA's knowledge after making reasonable inquiry, TDC
          has not paid any dividends on the Class A Common Stock in the past
          two years.

          TDC is restricted from paying any dividends on the Class A Common
          Stock if, after payment of such dividend, the amount of TDC's cash,
          cash equivalents and short-term and long-term investments would be
          less than the Available Funds as such term is defined in the
          Restated Certificate of Incorporation of TDC as filed with the
          Secretary of State of the State of Delaware on April 1, 1993 (the
          "Restated Certificate") and attached as Annex 17(c) hereto.
                                                  -----------

     (e)  Not applicable.

     (f)  Not applicable.

Item 2.
- -------

     This filing is being made by ALZA. Its principal business is
pharmaceutical research and development and the commercialization of
pharmaceutical products. The address of its principal executive offices are
950 Page Mill Road, Palo Alto, CA 94304.

     During the last five years, ALZA has not been convicted in a criminal
proceeding (excluding traffic violations or similar misdemeanors).  During the
last five years, ALZA has not been a party to a civil proceeding of a judicial
or administrative body of competent jurisdiction and as a result of such
proceeding was or is subject to a judgment, decree or final order enjoining
further violations of, or prohibiting activities, subject to, federal or state
securities laws or finding any violation of such laws.

                                       4
<PAGE>
 
Item 3.
- -------

     (a)  (1)  The nature and approximate amount in dollars of any transaction
          which has occurred since the commencement of TDC's second full fiscal
          year preceding the date of this Statement between ALZA and TDC are as
          follows:

               (i)   Since the commencement of TDC's second full fiscal year
                     preceding the date of this Statement, TDC paid
                     approximately $225,000,000 to ALZA pursuant to a
                     Development Agreement between ALZA and TDC dated March 10,
                     1993 whereby ALZA was retained by TDC to undertake
                     activities related to the selection and development of
                     pharmaceutical products.

               (ii)  Since the commencement of TDC's second full fiscal year
                     preceding the date of this Statement, TDC paid
                     approximately $500,000 to ALZA pursuant to a Services
                     Agreement between ALZA and TDC dated March 10, 1993 whereby
                     ALZA was retained by TDC to provide certain administrative
                     services to TDC (such as legal and accounting) in exchange
                     for payment of ALZA's costs in the provision of such
                     services.

               (iii) There is also (a) a Technology License Agreement dated
                     March 10, 1993 between ALZA and TDC, whereby ALZA licensed
                     certain proprietary technology to TDC, and (b) a License
                     Option Agreement dated March 10, 1993 between ALZA and TDC,
                     whereby TDC granted ALZA an option to license certain
                     products from TDC. No amounts have been paid by either of
                     ALZA or TDC to the other pursuant to such agreements since
                     the commencement of TDC's second full fiscal year preceding
                     the date of this Statement except as set forth in section
                     (iv) below.

                                       5
<PAGE>
 
               (iv)  In January of 1997, ALZA exercised its option to license
                     from TDC for 12 European countries a second-generation
                     transdermal testosterone product to follow ALZA's existing
                     Testoderm(R) product. ALZA entered into an agreement with
                     Ferring N.V. to market the TDC product in such countries.
                     As a result of ALZA's exercise of this license option and
                     the arrangement with Ferring, ALZA paid TDC $580,000, a
                     portion of the upfront payment ALZA received from Ferring,
                     and will receive payments from ALZA based on sales of the
                     product in the 12 European countries covered by ALZA's
                     agreement with Ferring.

               (v)   In February of 1997, ALZA exercised its option to license
                     from TDC a once-daily OROS(R) hydromorphone product on a 
                     worldwide basis. ALZA entered into an agreement with Knoll
                     Pharmaceutical Company and Knoll A.G. (together "Knoll")
                     for the further clinical development and worldwide
                     commercialization of that product. As a result of ALZA's
                     exercise of the license for such product, TDC will receive
                     a portion of the amounts ALZA receives from Knoll based on
                     worldwide sales of the product, and a portion of future
                     milestone payments made by Knoll to ALZA.

          (2)  None.

     (b)  Not applicable.

Item 4.
- -------

     (a)  ALZA exercised its option to purchase all of TDC's Class A Common
          Stock (the "Purchase Option") on August 25, 1997 by delivering an
          exercise notice to TDC. The terms of the Purchase Option are set
          forth in TDC's Restated Certificate. Pursuant to the Restated
          Certificate, the exercise price of the Purchase Option is $100
          million. ALZA has determined that September 29, 1997 will be the
          closing date for the purchase ("Closing Date"). ALZA will deposit
          the exercise price with Boston EquiServe, L.P., as payment agent
          ("Payment Agent"), on or prior to that date. Promptly following the
          Closing Date, and upon receipt of stock certificates for the Class A
          Common Stock as instructed by the Payment Agent, the Payment Agent
          will distribute the exercise price pro rata to each person or entity
          who was a holder of Class A Common Stock at the close of business on
          the Closing Date. In the case of any person or entity holding Class
          A Common Stock in a brokerage account, the broker will credit the
          relevant account with such amount.

                                       6
<PAGE>
 
          In accordance with the terms of the Restated Certificate, the
          stockholders of the Class A Common Stock do not need to take any steps
          to approve the purchase. Title to the Class A Common Stock will
          automatically vest in ALZA on the Closing Date and the exercise price
          will be paid to such stockholders, upon tender of their stock
          certificates directly or through their brokers, in accordance with
          their respective interests.

     (b)  Not applicable.

Item 5.
- -------

     Subsequent to the purchase of the Class A Common Stock by ALZA, TDC will be
a wholly-owned subsidiary of ALZA.  ALZA anticipates de-listing TDC from the
Nasdaq National Market and suspending its reporting requirements with the
Securities and Exchange Commission (the "Commission") by filing a Form 15. ALZA
intends to replace TDC's officers and Board of Directors with ALZA employees.

Item 6.
- -------

     (a)  The total consideration for the purchase by ALZA of the Class A Common
          Stock is $100 million. The source of these funds is ALZA's cash, cash
          equivalents and marketable securities.

     (b)  ALZA's reasonably itemized statement of expenses for the transaction
          includes filing fees of $20,000, printer fees of approximately
          $5,000, accounting fees of approximately $2,000 and legal fees of
          approximately $50,000. TDC will not be responsible for paying any or
          all of such expenses.

     (c)  Not applicable.
 
     (d)  Not applicable.

Item 7.
- -------

     (a)  The purpose of this transaction is to acquire the rights to all
          products and product candidates developed or under development by ALZA
          and TDC pursuant to the Development Agreement dated March 10, 1993
          between ALZA and TDC. ALZA believes that it is in the best interests
          of ALZA and ALZA's stockholders to exercise the Purchase Option at
          this time.

                                       7
<PAGE>
 
     (b)  As ALZA is exercising certain previously granted rights, no other
          options were considered.

     (c)  The transaction is structured pursuant to the terms of the previously
          granted Purchase Option as set forth in TDC's Restated Certificate.  
          This transaction is being undertaken at this time because TDC has no
          significant funds remaining to expend on product development and the
          Purchase Option otherwise would have expired no later than January 15,
          1998.

     (d)  The transaction reported herein will cause TDC to become a wholly-
          owned subsidiary of ALZA. TDC will be de-listed from the Nasdaq
          National Market and will have its public reporting obligations
          suspended. The federal tax consequences to TDC are that utilization of
          TDC's losses and other tax carryovers may be limited under Section 382
          of the Internal Revenue Code of 1986, as amended (the "Code").

          The transaction reported herein will cause ALZA to own 100% of TDC.
          As a result, ALZA will indirectly own all of the assets of TDC.
          Accordingly, ALZA will report 100% of the net book value and net
          earnings of TDC. There will be no significant federal tax
          consequences to ALZA as a result of the exercise of the Purchase
          Option.

          The transaction reported herein will cause each stockholder of Class A
          Common Stock to dispose of his or her Class A Common Stock for
          consideration equal to that stockholder's pro rata share of the
          exercise price identified in Item 4(a) above.  This consideration is
          the amount specified in the Restated Certificate provided in 1993.
          The federal income tax consequences to such stockholder, in general
          terms, are set forth below.

          The following discussion sets forth federal income tax considerations
          under the Code for stockholders with respect to cash received by
          stockholders of TDC for the Class A Common Stock. This discussion is
          intended only to provide general information to stockholders that are
          subject to United States federal income tax; it may not address all
          relevant federal income tax consequences to such persons or to other
          categories of stockholders, e.g., foreign persons, dealers in
          securities, and stockholders that are exempt from federal income tax.
          This discussion is based upon present federal income tax laws and does
          not attempt to anticipate changes, including changes in tax rates,
          that may be made under currently pending legislative proposals. This
          discussion assumes that the Class A Common Stock was at all relevant
          times capital assets of the stockholders. This discussion does not
          address state, local or foreign tax considerations. ALL STOCKHOLDERS
          ARE URGED TO CONSULT THEIR OWN TAX ADVISORS.

          Holders of Class A Common Stock will have a capital gain or loss due
          to ALZA's exercise of the Purchase Option equal to the difference
          between (a)

                                       8
<PAGE>
 
          the amount of the cash received, and (b) their basis in the Class A
          Common Stock surrendered. Gain or loss due to the exercise of the
          Purchase Option should be long-term if the Class A Common Stock has
          been held for more than one year at the time of exercise of the
          Purchase Option. The Internal Revenue Service ("IRS") may assert,
          however, that the holding period of the Class A Common Stock does not
          begin until such date as the Purchase Option is exercised and that
          capital gain or loss upon exercise of the Purchase Option is therefore
          short-term. Limitations may apply to deduction of capital loss.

          To the extent that holders of Class A Common Stock have not provided
          appropriate taxpayer identification numbers on IRS Form W-9 or a
          substitute therefor, such stockholders may be subject to backup
          withholding by ALZA.

Item 8.
- -------

     (a)  ALZA reasonably believes that the transaction reported herein is fair
          to the holders of TDC Class A Common Stock.  None of ALZA's directors
          dissented to the transaction.  Julian N. Stern and Dr. Alejandro
          Zaffaroni abstained from voting on such transaction because they each
          own shares of Class A Common Stock.

     (b)  The material factor upon which the belief stated in Item 8(a) is based
          is set forth below.

               (i)   Stockholder Awareness of Purchase Option

               The initial public holders of the Class A Common Stock received
               such stock as a dividend from ALZA in 1993. The Purchase Option
               was a feature of the Class A Common Stock at that time and was
               described in the ALZA Information Statement, dated March 10,
               1993, distributed in connection with this distribution. The
               Purchase Option was also set forth in the Restated Certificate,
               which was publicly filed both with the Delaware Secretary of
               State and the Commission prior to the distribution. Pursuant to
               the Restated Certificate, the stock certificates for the Class
               A Common Stock were legended to put the holders thereof on
               further notice about the Purchase Option. Stockholders were
               also advised of the Purchase Option in each Form 10-K (since
               the date of the distribution) and each recent Form 10-Q public
               filing made by each of ALZA and TDC with the Commission.
               Accordingly, the Purchase Option was present in the initial
               public distribution of the Class A Common Stock, was
               disseminated in TDC's charter documents, was discussed

                                       9
<PAGE>
 
               in ALZA's and TDC's periodic filings and was legended on each
               stock certificate for the Class A Common Stock. As a result,
               every TDC Class A Common stockholder received substantial
               notice as to the terms of the Purchase Option prior to making
               any investment decision with respect to the Class A Common
               Stock. In addition, recent public filings by both ALZA and TDC
               have indicated the status of funds available for product
               development and therefore when the potential exercise of the
               Purchase Option was likely to be triggered. During 1997, both
               parties have indicated that these funds would likely be
               exhausted during the third quarter of 1997.

     (c)  The Restated Certificate does not require any approval of the
          stockholders of TDC for the exercise of the Purchase Option.

     (d)  After making reasonable inquiry of management of TDC, ALZA believes
          that no directors of TDC have retained an unaffiliated representative
          to act solely on behalf of any security holders of TDC as no action is
          required by either TDC's directors or security holders to effect the
          Purchase Option.

     (e)  See Item 8(d) above.
 
     (f)  Not applicable.

Item 9.
- -------

     (a)  Neither ALZA nor, to the best of ALZA's knowledge after reasonable
          inquiry of management of TDC, TDC, has received any report, opinion
          (other than an opinion of counsel) or appraisal from an outside party
          which is materially related to the transaction described herein.

     (b)  Not applicable.

     (c)  Not applicable.

Item 10.
- --------

     (a)  As of August 25, 1997, no shares of Class A Common Stock of TDC are
          beneficially owned by ALZA, by any pension, profit sharing or similar
          plan of ALZA or, to ALZA's knowledge after reasonable inquiry of
          management of TDC, by TDC, by each executive officer and director of
          either ALZA, TDC, any person controlling either ALZA or TDC or any
          executive officer of any corporation ultimately in control of either
          ALZA or TDC, or by any associate or majority owned subsidiary of
          either ALZA or TDC except as set out on the following table:

                                       10
<PAGE>
 
<TABLE>
<CAPTION>
                                                                                                      Immediately
                                                                      Direct         Indirect         Exercisable
Name                             Position                            Ownership       Ownership          Options
- ----                             --------                            ---------       ---------          -------    
 
<S>                              <C>                                 <C>             <C>                <C>
Blaschke, Dr. Terrence F.        Director of TDC                         4,500           6,200           40,000
 
Cozadd, Bruce C.                 Senior Vice President and                  15
                                 Chief Financial Officer of ALZA
 
Fethe, Harold                    Vice President, Human                                   3,304
                                 Resources of ALZA
 
Fulscher, Dr. Gary V.            Senior Vice President,                  4,489           4,693
                                 Operations of ALZA
 
Hoffmann, David R.               Vice President, Finance and             1,622           6,223
                                 Secretary of TDC

Lairson, Dr. Paul D.             Director of TDC                                                         40,000
 
Martin, Suzanne G.               Vice President, Research and              695
                                 Development Administration of TDC
 
Neil, Gary L., Ph.D.             Director, President and Chief                          12,000          160,000
                                 Executive Officer of TDC
 
Phipps, Allen M.                 Chairman of the Board of TDC           10,000                           60,000
 
Sommers, William P, Ph.D.        Director of TDC                                         2,919           40,000
 
Stern, Julian N.                 Director and Secretary of ALZA          9,393
 
Theeuwes, Dr. Felix              President, New Ventures and               413          17,064
                                 Chief Scientist of ALZA
 
Zaffaroni, Dr. Alejandro         Co-Chairman of the Board and           95,594
                                 Founder of ALZA
</TABLE>
As of December 31, 1996 ALZA's 401(k) tax deferral investment plan owned 18,902
shares of Class A Common Stock for the accounts of certain ALZA employees. The
employees direct the investment of these accounts. Some of the shares reported
as indirectly owned by ALZA employees in the table above are included in the
foregoing amount.

     (b)  None.

                                       11
<PAGE>
 
Item 11.
- --------

     The arrangements between ALZA and TDC have been described in Items 1, 4,
and 6 herein. A summary of this information is set forth below.

     Article FIFTH of the Restated Certificate provides ALZA with the Purchase
Option. The Purchase Option provides that ALZA may purchase all, but not less
than all, of the issued and outstanding Class A Common Stock at any time prior
to the earlier of: (i) 60 days after the later of (a) the date of filing with
the Commission or (b) the due date of TDC's Form 10-K or Form 10-Q containing a
balance sheet showing that TDC has less than an aggregate of $5 million in cash,
cash equivalents, and short-term and long-term investments, or (ii) June 30,
1999. ALZA may exercise the Purchase Option at any time prior to such expiration
date by mailing an exercise notice to TDC. This exercise notice must identify
certain information, including a Closing Date for the purchase and the exercise
price and form of consideration to be paid to TDC stockholders. The Closing Date
must be within 90 days of the exercise date but may be extended by ALZA in
certain circumstances outlined in the Restated Certificate, such as the need for
regulatory clearance. ALZA exercised the Purchase Option by providing the
foregoing exercise notice to TDC on August 25, 1997. The Closing Date has been
set for September 29, 1997.

     From the date of exercise of the Purchase Option until the Closing Date,
TDC is prohibited by the terms of the Restated Certificate from engaging in any
extraordinary corporate activity without the prior written consent of ALZA.

     Article FOURTH of the Restated Certificate provides that as soon as ALZA
exercises the Purchase Option, TDC's board shall cease to be classified, the
number of authorized TDC directors shall be increased in accordance with a
formula set forth in the Restated Certificate and the holders of TDC's Class B
Common Stock (currently ALZA) shall have the sole right to appoint the directors
thereafter.

     Within 15 days after the mailing of the exercise notice to TDC, TDC must
provide ALZA with a status statement containing certain financial information.
This financial information includes all actual and contingent liabilities of
TDC. ALZA then may reduce the exercise price by the amount of such liabilities. 
It is not anticipated that any reduction will occur in the current circumstances
of this transaction.

     ALZA must designate a payment agent who will distribute the exercise price
to the TDC stockholders. ALZA must also deposit both the exercise price, and
irrevocable instructions to pay the exercise price to TDC stockholders of record
as of the close of business on the Closing Date, with the payment agent on or
prior to the Closing Date. ALZA has designated Boston EquiServe, L.P., as 
payment agent.

                                       12
<PAGE>
 
     On the Closing Date, title to the Class A Common Stock will automatically
transfer to and vest in ALZA without further act of any person. The Payment
Agent will then disburse the exercise price to TDC stockholders upon tender of 
stock certificates to the Payment Agent or, if the Class A Common Stock is held 
in a brokerage account, that account will be credited with such amount.

Item 12.
- --------

     (a)  Not applicable.

     (b)  Not applicable.

Item 13.
- --------

     (a)  Appraisal rights are not afforded under either applicable law or the
          Restated Certificate to TDC stockholders in respect of the exercise of
          the Purchase Option and none will be afforded by either ALZA or
          TDC.  ALZA is not aware of any rights available to objecting holders
          of Class A Common Stock under applicable law.

     (b)  ALZA is unaware, after making reasonable inquiry of management of TDC,
          of any grant of access to unaffiliated security holders to the
          corporate files of either TDC or ALZA or the appointment of counsel or
          appraisal services for unaffiliated security holders at the expense of
          either TDC or ALZA.

     (c)  Not applicable.

Item 14.
- --------

     (a)  TDC financial data is attached to this Statement as Exhibits 99.1,
          99.2 and 99.3. TDC had no material fixed charges for the two most
          recent fiscal years and the appropriate interim period. Book value
          per share of Class A Common Stock for December 31, 1996 was $8.94 and
          for June 30, 1997 was $2.82.

     (b)  Not applicable.

Item 15.
- --------

     (a)  Not applicable.

     (b)  None.

Item 16.
- --------

     Not applicable.

                                       13
<PAGE>
 
Item 17.
- --------

     17(c)   Restated Certificate of Incorporation of Therapeutic Discovery
Corporation as filed with the Secretary of State of the State of Delaware on
April 1, 1993.

     17(d)   Notice to Stockholders of Therapeutic Discovery Corporation (for 
purposes of this Statement only, Annex A thereto being Item 17(c) above).
                                 -------

   99.1       Financial information extracted from TDC Form 10-Q for the
              quarterly period ended June 30, 1997.

   99.2       Financial information extracted from TDC Form 10-K for the year
              ended December 31, 1996.

   99.3       Financial information extracted from TDC Form 10-K for the year
              ended December 31, 1995.



                                   SIGNATURE

     After due inquiry and to the best of my knowledge and belief, I certify
that the information set forth in this statement is true, complete and correct.

August 27, 1997                          ALZA CORPORATION


                                         By: /s/ BRUCE C. COZADD
                                            ____________________________
                                              Bruce C. Cozadd,
                                              Senior Vice President and
                                              Chief Financial Officer



The original statement shall be signed by each person on whose behalf the
statement is filed or his authorized representative.  If the statement is signed
on behalf of a person by his authorized representative (other than an executive
officer or general partner of the person filing this statement), evidence of the
representative's authority to sign on behalf of such person shall be filed with
the statement.  The name and any title of each person who signs the statement
shall be typed or printed beneath his signature.
<PAGE>
 
                                                                     ANNEX 17(c)


                               State of Delaware

                       Office of the Secretary of State                   PAGE 1

                       ________________________________

     I, WILLIAM T. QUILLEN, SECRETARY OF STATE OF THE STATE OF DELAWARE, DO 
HEREBY CERTIFY THE ATTACHED IS A TRUE AND CORRECT COPY OF THE CERTIFICATE OF 
RESTATED CERTIFICATE OF INCORPORATION OF "THERAPEUTIC DISCOVERY CORPORATION" 
FILED IN THIS OFFICE ON THE FIRST DAY OF APRIL, A.D. 1993, AT 9 O'CLOCK A.M

     A CERTIFIED COPY OF THIS CERTIFICATE HAS BEEN FORWARDED TO NEW CASTLE
COUNTY RECORDER OF DEEDS ON THE FIRST DAY OF APRIL, A.D. 1993 FOR RECORDING.

                              * * * * * * * * * *


                                   /s/ William T. Quillen
      [SEAL OF STATE OF DELAWARE]  ---------------------------------------------
                                   William T. Quillen, Secretary of State

                                   AUTHENTICATION:     *3843907
                                             DATE:     04/01/1993
930915252

<PAGE>
 
                    RESTATED CERTIFICATE OF INCORPORATION 
                                      OF 
                       THERAPEUTIC DISCOVERY CORPORATION
                (Originally incorporated on November 12, 1992)

          FIRST:    Name.  The name of this corporation is Therapeutic Discovery
                    ----
Corporation (the "corporation").

          SECOND:   Registered Office; Registered Agent.  The address of the 
                    -----------------------------------
registered office of this corporation in the State of Delaware is 1013 Centre 
Road, in the City of Wilmington, County of New Castle. The name of the
registered agent of this corporation at such address is Corporation Service
Company.

          THIRD:    Purpose.  The purpose of this corporation is to engage in 
                    -------
any lawful act or activity for which corporations may be organized under the 
General Corporation Law of the State of Delaware.

          FOURTH:   Authorized Capital Stock.
                    ------------------------

          (A)  This corporation is authorized to issue two classes of shares, 
which shall be known as Class A Common Stock and Class B Common Stock. The total
number of shares of stock of all classes that this corporation is authorized to 
issue is 12,000,100. The total number of shares of Class A Common Stock which 
this corporation is authorized to issue is 12,000,000. The total number of 
shares of Class B Common Stock which this corporation is authorized to issue is 
100. Each share of Class A Common Stock and Class B Common Stock shall have a 
par value of $0.01.

          Effective immediately upon the filing of this Restated Certificate of 
Incorporation, each share of Common Stock, par value $1.00 per share, of this 
corporation outstanding immediately prior to such filing shall be converted into
and reclassified as one share of Class B Common Stock.

          (B)  The powers, designations, preferences, and relative, 
participating, optional or other special rights granted to, and the 
qualifications, limitations and restrictions imposed upon, the Class A Common 
Stock and Class B Common Stock and the respective holders thereof are as 
follows:

          (1)  Redemption.  The shares of Class A Common Stock are redeemable
               ----------
     and may be redeemed as provided in (but only as provided in) ARTICLE FIFTH,
     Section (F).

          (2)  Dividends.  The holders of shares of Class A Common Stock and
               ---------
     Class B Common Stock shall be entitled to receive per share and without
     preference such dividends as may be declared by the Board of Directors from
     time to time

<PAGE>
 
     out of funds legally available therefor. No dividend may be declared on the
     Class A Common Stock unless the same per share dividend is declared on the
     Class B Common Stock, and no dividend may be declared on the Class B Common
     Stock unless the same per share dividend is declared on the Class A Common
     Stock. Dividends may not be declared, nor may shares of Class A Common
     Stock or Class B Common Stock be repurchased or redeemed (other than
     pursuant to Section (F) of Article FIFTH) if, after payment of such
     dividend, or after effecting such repurchase or redemption, the amount of
     this corporation's cash, cash equivalents, short and long term investments
     would be less than the amount of Available Funds as of the date of such
     dividend, repurchase or redemption.

          (3)  Liquidation. In the event of voluntary or involuntary liquidation
               -----------
     of this corporation, the holders of the Class A Common Stock and Class B
     Common Stock of the corporation shall be entitled to receive, on a pro rata
     per share basis and without preference, all of the remaining assets of this
     corporation available for distribution to its stockholders.

          (4)  Voting Rights. Except as otherwise required by law or provided 
               -------------
     herein, the holders of Class A Common Stock and Class B Common Stock shall
     vote together as a single class. Each holder of Class A Common Stock and
     Class B Common Stock shall have one vote for each share standing in his or
     her name on all matters submitted to a vote of holders of the common
     shares. At any meeting of the stockholders of this corporation, the
     determination of a quorum shall be based upon the presence of shares of
     Class A Common Stock and Class B Common Stock representing a majority of
     the voting power of all of the shares of Class A Common Stock and Class B
     Common Stock. This corporation shall not, without the affirmative vote of
     the holders of a majority of the issued and outstanding shares of Class B
     Common Stock, voting separately and as a class, (a) alter or change the
     powers, designations, preferences and relative, participating, optional or
     other special rights granted to, or the qualifications, limitations and
     restrictions imposed upon, the Class A Common Stock or the Class B Common
     Stock, (b) alter or change Articles FOURTH, FIFTH, SIXTH, SEVENTH or EIGHTH
     of this Restated Certificate of Incorporation, (c) authorize the creation
     or issuance of any additional class or series of stock, or otherwise make
     any amendment to this Certificate of Incorporation that would alter the
     rights of the holders of the Class B Common Stock, (d) undertake the
     voluntary dissolution, liquidation or winding up of this corporation, (e)
     merge or consolidate this corporation with or into any other corporation or
     entity, (f) sell, lease, exchange, transfer or otherwise dispose of any
     substantial asset of this corporation or (g) alter the bylaws of this
     corporation in a manner

                                      -2-
<PAGE>
 
     described in the last sentence of ARTICLE EIGHTH. Furthermore, from and
     after the Purchase Option Exercise Date, as defined in Article FIFTH, (i)
     the board of directors of this corporation shall cease to be classified;
     (ii) the number of directors of this corporation shall be increased to a
     number equal to (a) two times the maximum number of authorized directors
     (counting for this purpose both directors in office and vacant
     directorships), plus (b) one; and (iii) the holders of the Class B
                     ----
     Common Stock shall have the sole right to elect the directors of this
     corporation, including directors to fill the new directorships created
     pursuant to clause (ii). No vacancy created as a result of the increase in
     the size of the board of directors pursuant to the preceding sentence shall
     be filled other than by the holders of the Class B Common Stock.

          (5)  Conversion. The Class B Common Stock shall automatically convert
               ----------
     into fully paid and non-assessable shares of Class A Common Stock of this
     corporation at 12:01 a.m. New York time on the day immediately following
     the expiration of the Purchase Option granted in Article FIFTH. The Class B
     Common Stock shall convert into Class A Common Stock at the rate of one
     share of Class A Common Stock for each share of Class B Common Stock.

          (6)  Transfer of Class A Common Stock. Until the first to occur of (i)
               --------------------------------
     the third anniversary of the date (the "Distribution Date") upon which
     certificates representing Units comprised in part of shares of Class A
     Common Stock are distributed by ALZA Corporation (together with its
     successors and assigns, "ALZA") to the holders of ALZA's Class A Common
     Stock or (ii) the Purchase Option Exercise Date, the Class A Common Stock
     may be transferred only as part of Units. Each "Unit" consists of one share
     of Class A Common Stock and one warrant to acquire one-eighth of one share
     of ALZA Common Stock.

          FIFTH.    Purchase Option.
                    ---------------

          (A)  Definitions. For purpose of this Restated Certificate of 
               -----------
Incorporation, the following terms shall have the following definitions:

          (1)  ALZA Common Stock means the Class A Common Stock of ALZA or, if 
               -----------------
such Class A Common Stock is converted into or exchanged for another class or 
series of stock of ALZA or any other corporation, such other class or series of 
stock.

          (2)  Available Funds means, as of any date of determination, the sum 
               ---------------
of (a) $250 million (contributed by ALZA in or about March 1993), plus (b)
                                                                  ----
interest and other income earned through investment of such funds until their
expenditure pursuant to the Development Contract through the date of

                                      -3-

<PAGE>
 
determination, less (c) reasonable ongoing administrative expenses of this 
               ---- 
corporation, including legal and accounting expenses, incurred through the date 
of determination, less (d) the costs associated with the distribution to ALZA's 
                  ----
stockholders of the Units.

          (3)  Development Contract means the Development Agreement dated as of 
               --------------------
March 10, 1993 between ALZA and this corporation, as such contract may be 
amended or modified from time to time by amendments approved by ALZA and the 
board of directors of this corporation.

          (4)  Fair Market Value means, with reference to ALZA Common Stock, (a)
               -----------------
if ALZA Common Stock is listed on the New York Stock Exchange or any other 
securities reporting closing sales prices (including without limitation the 
NASDAQ National Market System), the average of the closing sales price of ALZA 
Common Stock on such exchange (which shall be the New York Stock Exchange or, if
ALZA Common Stock is not then traded on such exchange, on the principal exchange
on which ALZA Common Stock is then traded), for the five trading days ending 
with the trading day that is two trading days prior to the date of 
determination, (b) if ALZA Common Stock is not listed on any securities exchange
described in clause (a) but is quoted on NASDAQ or another quotation system 
providing bid prices, the average (over the five day period described in clause 
(a)) of the bid prices for each day in such period on NASDAQ (or, if ALZA Common
Stock is not then quoted on NASDAQ, the largest quotation system on which ALZA 
Common Stock is then quoted), and (c) if ALZA Common Stock is not listed on any 
exchange or quoted on any quotation system, the value thereof as determined in 
good faith by ALZA's board of directors.

          (5)  Final Purchase Option Exercise Price means the Purchase Option 
               ------------------------------------
Exercise Price minus (a) the amount by which this corporation's Liabilities 
               -----
existing at the Purchase Option Exercise Date (other than liabilities pursuant 
to the Development Contract) exceed the aggregate of this corporation's then 
existing cash, cash equivalents and short-term and long-term investments (but 
excluding from such cash, cash equivalents and short-term and long-term 
investments the amount of Available Funds determined as of the Purchase Option 
Exercise Date which had not, as of such date, been paid by this corporation in 
accordance with the Development Contract); and minus (b), if the Purchase Option
                                               -----
Exercise Price was determined based upon the provisions of clause (c) of 
Section (A)(10) of this Article FIFTH, any additional amounts paid by this 
corporation pursuant to the Development Contract from the date of the last 
report of such expenditures provided by this corporation to ALZA pursuant to the
Development Contract to the Purchase Option Exercise Date.

          (6)  Liabilities means, with respect to this corporation, (a) all 
               -----------
liabilities required to be reflected or 

                                      -4-


<PAGE>

reserved against in this corporation's financial statements under generally
accepted accounting principles consistently applied ("GAAP"), (b) any guaranty
of any indebtedness of another person and (c) any reimbursement or similar
obligation with respect to any letter of credit issued for the account of this
corporation or as to which this corporation is otherwise liable. Liabilities of
the type described in (b) and (c) shall be valued at the full amount of the
potential liability of the corporation thereon.

          (7)  License Agreement means any License Agreement between ALZA and 
               -----------------
this corporation entered into upon the exercise by ALZA of the license option 
granted to it pursuant to the License Option Agreement.

          (8)  License Option Agreement means the License Option Agreement 
               ------------------------
between ALZA and this corporation dated as of March 10, 1993, as such agreement 
may be amended or modified from time to time by amendments approved by ALZA and 
the board of directors of this corporation.

          (9)  Purchase Option Exercise Date means the date upon which ALZA 
               -----------------------------
notifies this corporation in writing of its exercise of the Purchase option as 
provided in Section (C) of this Article FIFTH.

          (10) Purchase Option Exercise Price means the greatest of the 
               ------------------------------
following:

          (a)  the greater of (i) 25 times the Royalties paid by or due from
     ALZA to this corporation, plus 25 times any Royalties that would have been
                               ----
     paid by or due from ALZA to this corporation if ALZA had not exercised its
     right to buy out its obligation to pay any such Royalties as provided in
     Section 7.5 of the Development contract or Section 3.4 of any License
     Agreement, in each case determined with reference to the most recent four
     complete calendar quarters preceding the Purchase Option Exercise Date for
     which such Royalties were paid by or due from ALZA or would have been paid
     by or due from ALZA, or (ii) 100 times such Royalties paid by or due from
     ALZA to this corporation during the most recent complete calender quarter
     for which such Royalties were paid or due; provided, that in the case of
                                                --------  
     either (i) or (ii) the amount so determined shall be reduced by any amounts
     previously paid by ALZA to this corporation to buy out any obligation to
     pay Royalties as provided in the Development Contract or any License
     Agreement;

          (b)  the Fair Market Value of one million shares of ALZA Common Stock
     (which number of shares shall be proportionately adjusted for any stock
     dividend, split-up, combination or reclassification of the ALZA Common
     Stock) determined as of the Purchase Option Exercise Date;

                                     -5-
<PAGE>
 
          (c)  $325 million less the total amount paid by this corporation under
                            ----
     the Development Contract as last reported by this corporation to ALZA
     through the Purchase Option Exercise Date; and

          (d)  $100 million.

          (11) Purchase Option Expiration Time means 11.59 p.m. New York time on
               -------------------------------
December 31, 1999; provided that such date will be extended for successive one 
year periods if, as of any June 30 beginning with June 30, 1999, this 
corporation has not paid at least 90% of all Available Funds pursuant to the 
Development Contract. Notwithstanding the foregoing sentence, the Purchase 
Option Expiration Time will in no event occur later than 11.59 p.m. New York 
time on the 60th day after the later of (a) the date of filing with the 
Securities and Exchange Commission or (b) the due date of this corporation's 
Annual Report on Form 10-K or Quarterly Report on Form 10-Q containing a balance
sheet showing that this corporation has less than an aggregate of $5 million in 
cash, cash equivalents, and short-term and long-term investments.

          (12) Royalties means (a) royalties paid or other payments made by 
               ---------
ALZA to this corporation under a License Agreement in respect of any product
licensed by ALZA from this corporation pursuant to the License Option Agreement
and (b) payments made by ALZA under Section 7.4 of the Development Contract. In 
determining the amount of Royalties for purposes of Article FIFTH, Section (A) 
(10) (a), all Special Royalty Payments are to be amortized equally over a period
of 28 calendar quarters beginning with the calendar quarter in which such
Special Royalty Payment is made, regardless of the treatment of such Special
Royalty Payments in determining Royalties actually paid under any License
Agreement or the Development Contract.

          (13) Special Royalty Payment means front-end distribution fees, 
               -----------------------
prepaid royalties and similar one-time, infrequent or special payments.

          (14) Status Statement means, as of any date, a balance sheet dated as 
               ----------------
of such date, together with (a) a statement and brief description of all other 
liabilities of this corporation constituting Total Liabilities as of such date 
not reflected on such balance sheet, (b) a statement of the amount of Available 
Funds remaining as of such date, and (c) a statement of the total amounts paid 
by this corporation pursuant to the Development Contract through such date.

          (15) Total Liabilities means, with respect to this corporation, (a) 
               -----------------
all Liabilities and (b) any other debts, liabilities or obligations, absolute or
contingent, matured or unmatured, liquidated or unliquidated, accrued or 
unaccrued, known or unknown, whenever arising, including all costs and expenses 
relating thereto, and including those debts, liabilities

                                     -6-
<PAGE>
 
and obligations arising under law, rule or regulation, or under any pending or 
threatened action, suit or proceeding, or any order or consent decree of any 
governmental entity or any award or any arbitrator of any kind, and those 
arising under any contract, commitment or undertaking.

          (B)  Grant of Option. ALZA is hereby granted an exclusive irrevocable 
               ---------------
purchase option to purchase all issued and outstanding shares of Class A Common 
Stock of this corporation for the Final Purchase Option Exercise Price (the 
"Purchase Option"). The Purchase Option, if exercised, must be exercised as to 
all, but not less then all, issued and outstanding shares of Class A Common 
Stock and may be exercised at any time at or prior to the Purchase Option 
Expiration Time. ALZA shall elect, at the time of exercise of the Purchase 
Option, to pay all or any portion of the Final Purchase Option Exercise Price in
cash, ALZA Common Stock (valued at its Fair Market Value determined as of the 
Purchase Option Exercise Date), or any combination thereof. The Purchase Option 
may, at ALZA's option, be assigned or otherwise transferred to any person or 
entity, including this corporation.

          (C)  Manner of Exercise. The Purchase Option shall be exercised at or 
               ------------------
before the Purchase Option Expiration Time by written notice (the "Exercise 
Notice") from ALZA to this corporation stating that the Purchase Option is 
being exercised and setting forth (1) the Purchase Option Exercise Price; (2) 
the portion, if any, of the Purchase Option Exercise Price to be paid in cash
and the portion, if any, of the Purchase Option Exercise Price to be paid in 
ALZA Common Stock, and if any portion of the Purchase Option Exercise Price is 
to be paid in ALZA Common Stock, stating the Fair Market Value of such ALZA 
Common Stock determined as of the Purchase Option Exercise Date, and (3) a 
closing date (the "Closing Date") on which all of the issued and outstanding 
shares of Class A Common Stock will be purchased. The Purchase Option shall be 
deemed to be exercised as of the date of mailing by first class mail of the 
Exercise Notice to this corporation.

          (D)  Closing.
               -------

          (1)  Closing Date; Corporation. Except as set forth below, the Closing
               -------------------------
Date shall be the date specified as such in the Exercise Notice, which date 
specified shall be no later than 90 days after the Purchase Option Exercise 
Date. The Closing Date may be extended by ALZA if, the judgment of ALZA, an 
extension of the Closing Date is necessary to obtain any governmental or third 
party consent to the purchase of the Class A Common Stock, to permit any 
necessary registration statement or similar filing to be declared effective, or 
to permit the expiration prior to the Closing Date of any statutory or 
regulatory waiting period. ALZA may extend the Closing Date for the reasons set 
forth in the preceding sentence by delivering written notice of such extension 
to this corporation on or prior 

                                      -7-
<PAGE>
 
to the previously scheduled Closing Date. This corporation shall cooperate with 
ALZA to effect the closing of the Purchase Option, including without limitation 
seeking any required third-party or governmental consents, and filing any 
applications, notifications, registration statements or the like which may be 
necessary to effect the closing. 

          (2)  Certain Restrictions Following Purchase Option Exercise Date. 
               ------------------------------------------------------------
From the Purchase Option Exercise Date until the Closing Date, this corporation
will not take any of the following actions (or permit any such actions to be 
taken on its behalf) except with the prior written consent of ALZA:

          (a)  borrow money, or mortgage, remortgage, pledge, hypothecate or 
     otherwise encumber any of its assets;

          (b)  sell, lease, lend, exchange or otherwise dispose of any of its
     assets, other than sales of inventory in the ordinary course of business;

          (c)  pay or declare any dividends or make any distributions on or in 
     respect of any shares of its capital stock;

          (d)  default in its obligations under any material contract, 
     agreement, commitment or undertaking of any kind or enter into any material
     contract, agreement, purchase order or other commitment; or

          (e)  enter into any other transaction or agreement or arrangement, or 
     incur any liabilities, not in the ordinary course of this corporation's 
     business.

          (3)  Determination of Final Purchase Option Exercise Price. Not later 
               -----------------------------------------------------
than 15 business days following the Purchase Option Exercise Date, this 
corporation shall deliver a final Status Statement to ALZA prepared as of the 
Purchase Option Exercise Date. Following receipt of such Status Statement and 
completion of any other investigation as ALZA shall deem necessary or 
appropriate, and prior to the Closing Date, ALZA shall determine the Final 
Purchase Option Exercise Price by making the adjustments to the Purchase Option 
Exercise Price contemplated by Section (A)(5) of this Article FIFTH and shall 
notify this corporation of such determination.

          (4)  Payment of Final Purchase Option Exercise Price. On or before the
               -----------------------------------------------
Closing Date, ALZA shall deposit the full amount of the Final Purchase Option 
Exercise Price with a bank or banks or similar entities designated by ALZA 
(which may include ALZA's transfer agent if shares of ALZA Common Stock are 
being delivered) to pay, on ALZA's behalf, the Final Purchase Option Exercise 
Price (the "Payment Agent"). Funds, if any, and ALZA Common Stock, if any, 
deposited with the Payment Agent shall be delivered in trust for the benefit of 
the holders of Class A

                                      -8-
<PAGE>
 
Common Stock, and ALZA shall provide the Payment Agent with irrevocable 
instructions to pay, on or after the Closing Date, the Final Purchase Option 
Exercise Price for the shares of Class A Common Stock to the holders of record 
thereof determined as of the Closing Date.  Payment for shares of Class A Common
Stock shall be mailed to each holder at the address set forth in this 
corporation's records or at the address provided by each holder or, if no 
address is set forth in this corporation's records for a holder or provided by 
such holder, to such holder at the address of this corporation.  At ALZA's 
request, this corporation shall provide, or shall cause its transfer agent to 
provide, to ALZA or to the Payment Agent, free of charge, a complete list of the
record holders of shares of Class A Common Stock, including the number of shares
of Class A Common Stock held of record and the address of each record holder.

          (E)  Transfer of Title.  Transfer of title to all of the issued and 
               -----------------
outstanding shares of Class A Common Stock shall be deemed to occur 
automatically on the Closing Date and thereafter this corporation shall be 
entitled to treat ALZA as the sole holder of all of the issued and outstanding 
shares of its Class A Common Stock, notwithstanding the failure of any holder of
Class A Common Stock to tender the certificates representing such shares to the 
Payment Agent.  This corporation shall instruct its transfer agent not to accept
any shares of Class A Common Stock for transfer on and after the Closing Date, 
except for the shares of Class A Common Stock transferred to ALZA.  This 
corporation shall take all actions reasonably requested by ALZA to assist in 
effectuating the transfer of shares of Class A Common Stock in accordance with 
this Article FIFTH.

          (F)  Redemption of Class A Common Stock.   At ALZA's election (which 
               ----------------------------------
election may be made at any time, provided it is made, by delivery of written 
notice thereof to this corporation, not less than five days prior to the Closing
Date), this corporation shall, subject to applicable restrictions in the 
Delaware General Corporation Law, redeem on the Closing Date all issued and 
outstanding shares of Class A Common Stock for an aggregate redemption price 
equal to the Final Purchase Option Exercise Price.

          SIXTH.    Protective Provisions.
                    ---------------------

          (A)  Legend.   Certificates evidencing shares of Class A Common Stock 
               ------
issued by or on behalf of this corporation shall bear a legend in substantially 
the following form:

          "The shares of Therapeutic Discovery Corporation evidenced hereby are 
subject to an option in favor of ALZA Corporation, its successors and assigns, 
as described in the Restated Certificate of Incorporation of Therapeutic 
Discovery Corporation to purchase such shares at a purchase price determined in 
accordance with Article FIFTH thereof exercisable

                                      -9-
<PAGE>
 
by notice delivered to this Corporation at or prior to the Purchase Option 
Expiration Time (as defined in the Restated Certificate of Incorporation of 
Therapeutic Discovery Corporation).  Copies of the Restated Certificate of 
Incorporation of Therapeutic Discovery Corporation are available at the 
principal place of business of Therapeutic Discovery Corporation at 1290 Page 
Mill Road, P. O. Box 10950, Palo Alto, California 94303-0860 and will be 
furnished to any stockholder on request and without cost."

          (B)  No Conflicting Action.   This corporation shall not take, nor 
               ---------------------
permit any other person or entity within its control to take, any action 
inconsistent with ALZA's rights under Article FIFTH.  This corporation shall not
enter into any arrangement, agreement or understanding, whether oral or in 
writing, that is inconsistent with or limits or impairs the rights of ALZA and 
the obligations of this corporation hereunder, including without limitation any 
arrangement, agreement or understanding which imposes any obligation upon this 
corporation, or deprives this corporation of any material rights, as a 
consequence of the exercise of the Purchase Option or the acquisition of the 
outstanding Class A Common Stock pursuant thereto.

          (C)  Inspection and Visitation Rights; Status Statements.   ALZA shall
               ---------------------------------------------------
have the right to inspect and copy, on reasonable notice and during regular 
business hours, the books and records of this corporation.  ALZA shall also have
the right to request from time to time (but not more frequently than monthly) a 
Status Statement as of such date as ALZA may request.  Each Status Statement 
shall be sent within seven days of request by ALZA.  ALZA shall also have the 
right to send a non-voting representative to attend all meetings of this 
corporation's board of directors and any committees thereof.  Such 
representative shall receive notice of all meetings of this corporation's board 
of directors and each committee thereof, as well as copies of all documents and 
other materials provided to any directors of this corporation in connection 
with any such meeting not later than the time such materials are provided to 
other directors.  Such representative shall also be provided with copies of all 
resolutions adopted or proposed to be adopted by unanimous written consent not 
later than the time such resolutions are provided to other directors.

          SEVENTH:  Board of Directors.
                    ------------------

          (A)  The number of directors which shall constitute the whole Board of
Directors of this corporation shall initially be three, but may be increased or 
decreased from time to time by a resolution duly adopted by the Board of 
Directors.

          (B)  Nomination of candidates for election to the Board of Directors 
shall be made as provided in the bylaws of this corporation. Election of
directors need not be by written ballot.

                                     -10-
<PAGE>
 
          (C)  The Board of Directors shall be and is divided into three 
classes: Class I, Class II and Class III, which shall be as nearly equal in 
number as possible. Each director shall serve for a term ending on the date of 
the third annual meeting of stockholders following the annual meeting at which 
the director was elected; provided, however, that each initial director in Class
I shall hold office until the annual meeting of stockholders in 1994; each 
initial director in Class II shall hold office until the annual meeting of 
stockholders in 1995; and each initial director in Class III shall hold office 
until the annual meeting of stockholders in 1996. Notwithstanding the foregoing
provisions of this Article, each director shall serve until his successor is
duly elected and qualified or until his death, resignation or removal.

          (D)  In the event of any increase or decrease in the authorized number
of directors, the newly created or eliminated directorships resulting from such
increase or decrease shall be apportioned by the Board of Directors among the
three classes of directors so as to maintain such classes as nearly equal as
possible. No decrease in the number of directors constituting the Board of
Directors shall shorten the term of any incumbent director.

          (E)  Except as otherwise provided in Article FOURTH, Section (B)(4), 
newly created directorships resulting from any increase in the number of 
directors and any vacancies on the Board of Directors resulting from death, 
resignation, disqualification, removal or other cause shall be filled by the 
affirmative vote of a majority of the remaining directors then in office (and 
not by stockholders), even though less than a quorum of the Board of Directors. 
Any director elected in accordance with the preceding sentence shall hold office
for the remainder of the full term of the class of directors in which the new 
directorship was created or the vacancy occurred and until such director's 
successor shall have been elected and qualified. 

          (F)  The name and mailing address of each person who is to serve as a 
director until the annual meeting of the stockholders entitled to vote for the 
class or until a successor is elected and qualified are as follows:

NAME                          MAILING ADDRESS                    CLASS 

Dr. Pieter P. Bonsen          950 Page Mill Road,                  I
                              Palo Alto, CA 94303

Adrian M. Gerber              950 Page Mill Road,                 II
                              Palo Alto, CA 94303

Dr. Felix Theeuwes            950 Page Mill Road,                III
                              Palo Alto, Ca 94303

          (G)  The board of directors of this corporation shall cease to be 
classified as provided in this Article SEVENTH from 

                                     -11-
<PAGE>
 
and after the Purchase Option Exercise Date. From and after such date all 
directors shall be elected to one year terms; provided the term of any director 
then in office shall not be reduced.

          EIGHTH:   Bylaws. In furtherance and not in limitation of the 
                    ------
powers conferred by statute, and subject to the next sentence, the Board of 
Directors and the stockholders of this corporation are each expressly authorized
to adopt, amend or repeal the bylaws of this corporation subject to any 
particular provisions concerning amendments set forth in this Certificate of 
Incorporation or the bylaws of this corporation. No amendment to the bylaws may 
be adopted by the stockholders without the approval of holders of a majority of 
the Class B Common Stock voting separately as a class if such amendment would 
affect the classification of the Board of Directors, or would otherwise regulate
the conduct of the Board's affairs or the manner in which it may act.

          NINTH:    Stockholder Meetings.     
                    --------------------

          (A)  Special Meetings. Special meetings of the stockholders for any 
               ----------------
purpose or purposes whatsoever may be called at any time only by the Board of 
Directors, the Chairman of the Board or the President of this corporation.

          (B)  No Action Without Meeting. At any time when this corporation has 
               -------------------------
more than one stockholder of any class of capital stock, no action required to 
be taken or which may be taken at any annual or special meeting of the 
stockholders may be taken without a meeting, and the power of stockholders to 
consent in writing, without a meeting, to the taking of any action is 
specifically denied. Notwithstanding the foregoing, the holder or holders of the
Class B Common Stock may take any action permitted to be taken by such holders 
as a class by written consent without a meeting.

          TENTH:    Limitation of Liability and Indemnification of Directors.
                    --------------------------------------------------------

          (A)  Elimination of Certain Liability of Directors. No director or 
               ---------------------------------------------
this corporation shall be personally liable to this corporation or its 
stockholders for monetary damages for breach of fiduciary duty as a director, 
except for liability (i) for any breach of the director's duty of loyalty to 
this corporation or its stockholders, (ii) for acts or omissions not in good 
faith or which involve intentional misconduct or a knowing violation of law, 
(iii) under section 174 of the Delaware General Corporation Law or (iv) for any 
transaction from which the director derived an improper, personal benefit.

          (B)  Indemnification and Insurance.
               -----------------------------

          1.   Right to Indemnification. Each person who was or is made a party 
               ------------------------
or is threatened to be made a party to or is

                                    -12-
<PAGE>
 
involved in any action, suit or proceeding, whether civil, criminal,
administrative or investigative (a "proceeding"), because he or she, or a person
of whom he or she is the legal representative, is or was a director or officer
of this corporation or is or was serving at the request of this corporation as a
direction, officer, employee or agent of another corporation or of a
partnership, joint venture, trust or other enterprise (including service with
respect to employee benefit plans), whether the basis of the proceeding is
alleged action in an official capacity as a director, officer, employee or agent
or in any other capacity while serving as a director, officer, employee or
agent, shall be indemnified and held harmless by this corporation to the fullest
extent authorized by the Delaware General Corporation Law, as the same exists or
may hereafter be amended (but, in the case of any such amendment, only to the
extent that such amendment permits this corporation to provide broader
indemnification rights than that law permitted this corporation to provide
before such amendment), against all expense, liability and loss (including
attorney's fees, judgments, penalties, fines, Employee Retirement Income
Security Act of 1974 excise taxes or penalties, and amounts paid or to be paid
in settlement) reasonably incurred or suffered by such person in connection
therewith; provided, however, that this corporation shall indemnify any such
person seeking indemnification in connection with a proceeding (or part thereof)
initiated by such person only if the proceeding (or part thereof) was authorized
by the Board of Directors of this corporation. Such indemnification shall
continue as to a person who has ceased to be a director, officer, employee or
agent and shall inure to the benefit of his or her heirs, executors and
administrators. The right to indemnification conferred by this Section shall be
a contract right which may not be retroactively amended and shall include the
right to be paid by this corporation the expenses incurred in defending any such
proceeding in advance of its final disposition; provided, however, that, if the
Delaware General Corporation Law requires the payment of such expenses incurred
by a director or officer in his or her capacity as a director or officer (and
not in any other capacity in which service was or is rendered by such person
while a director or officer, including, without limitation, service with respect
to an employee benefit plan) in advance of the final disposition of the
proceeding, such payment shall be made only upon delivery to this corporation of
an undertaking, by or on behalf of such director or officer, to repay all
amounts so advanced if ultimately it shall be determined that such director or
officer is not entitled to be indemnified under this section or otherwise. This
corporation may, by action of its Board of Directors, provide indemnification to
employees and agents of this corporation with the same scope and effect as the
indemnification of directors and officer

          2.   Nonexclusivity of Rights. The right to indemnification and the 
               ------------------------
payment of expenses incurred in defending a proceeding in advance of its final 
disposition conferred in this Section shall not be exclusive of any other right
which any

                                     -13-
<PAGE>
 
person may have or hereafter acquire under any statute, provision of this 
Certificate of Incorporation, bylaw, agreement, vote of stockholders or 
disinterested directors, or otherwise. 

          3.   Insurance. This corporation may maintain insurance, at its 
               ---------
expense, to protect itself and any director, officer, employee or agent of this 
corporation or another corporation, partnership, joint venture, trust or other 
enterprise against any such expenses, liability or loss, whether or not this 
corporation would have the power to indemnify such person against such expense, 
liability or loss under the Delaware General Corporation Law.

                                     -14-





<PAGE>
 

          IN WITNESS WHEREOF, the undersigned officers have executed this 
Restated Certificate of Incorporation on March 30, 1993 and do hereby certify 
                                               --
that this Restated Certificate of Incorporation, which restates and integrates, 
and also further amends, the provisions of this Corporation's Certificate of 
Incorporation, was duly adopted by the stockholders of this Corporation in 
accordance with Sections 242 and 245 of the Delaware General Corporation Law.


                                        THERAPEUTIC DISCOVERY CORPORATION 

                                        BY:  /s/ Pieter P. Bonsen
                                             --------------------------------
                                             Dr. Pieter P. Bonsen,
                                             President, Therapeutic Discovery 
                                             Corporation    


ATTEST:

/s/ Mary M. Roensch 
- --------------------------
Mary M. Roensch, Secretary, 
Therapeutic Discovery Corporation 

                                     -15-


<PAGE>
 
                                                                     ANNEX 17(d)

- --------------------------------------------------------------------------------

                               ALZA CORPORATION

                      EXERCISE OF OPTION TO PURCHASE ALL
                            CLASS A COMMON STOCK OF
                       THERAPEUTIC DISCOVERY CORPORATION

                     ------------------------------------
 
                          NOTICE  TO  STOCKHOLDERS OF

                       THERAPEUTIC DISCOVERY CORPORATION

                     ------------------------------------


        This information is disseminated pursuant to Rule 13e-3 of the
                 Securities Exchange Act of 1934, as amended.


THIS TRANSACTION HAS NOT BEEN APPROVED OR DISAPPROVED BY THE SECURITIES AND
 EXCHANGE COMMISSION NOR HAS THE COMMISSION PASSED UPON THE FAIRNESS OR MERITS
 OF SUCH TRANSACTION NOR UPON THE ACCURACY OR ADEQUACY OF THE INFORMATION
 CONTAINED IN THIS DOCUMENT. ANY REPRESENTATION TO THE CONTRARY IS UNLAWFUL.
  
 
 
- --------------------------------------------------------------------------------
<PAGE>


                                THE TRANSACTION
                                ---------------

     ALZA Corporation, a Delaware corporation ("ALZA"), wishes to advise holders
of the Class A Common Stock of Therapeutic Discovery Corporation, a Delaware
corporation ("TDC"), that, on August 25, 1997, ALZA exercised its option to
purchase all of the issued and outstanding shares of Class A Common Stock of TDC
(the "Purchase Option") as provided in TDC's Restated Certificate of
Incorporation filed with the Secretary of State of the State of Delaware on
April 1, 1993 (the "Restated Certificate"). The closing date for this purchase
will be September 29, 1997 (the "Closing Date"). A copy of the Restated
Certificate is appended hereto as Annex A.
                                  ------- 

     The purchase price for all issued and outstanding shares of Class A
Common Stock is $100 million. As of August 25, 1997, there are 7,734,424
shares of Class A Common Stock issued and outstanding and options to purchase
395,000 shares of Class A Common Stock currently exercisable. Accordingly,
assuming all outstanding options are exercised, you will receive approximately
$12.30 for each share of Class A Common Stock that you hold as of the close of
business on the Closing Date.

     In accordance with the Restated Certificate, ALZA will deposit $100
million with Boston EquiServe, L.P. (the "Payment Agent") on or before
September 29, 1997 and will provide the Payment Agent with an irrevocable
direction to pay these funds to the holders as of the close of business on
September 29, 1997 of Class A Common Stock. AFTER COMPLYING WITH THESE
CONDITIONS, OWNERSHIP OF ALL TDC CLASS A COMMON STOCK WILL AUTOMATICALLY
TRANSFER TO ALZA ON SEPTEMBER 29, 1997. If you hold your Class A Common Stock
certificates, the Payment Agent will be instructing you on how to tender your
certificates for payment. You will receive your payment from the Payment Agent
after you tender the certificates. If you hold your Class A Common Stock in a
brokerage account, your broker will credit your account with the purchase
price.

<PAGE>
 
                              NATURE OF DISCLOSURE
                              --------------------

     ALZA is providing this information to the security holders of TDC in
compliance with Rule 13e-3 of the Securities Exchange Act of 1934, as amended
(the "Exchange Act"). Notwithstanding the provision of this information, ALZA
disclaims any classification of ALZA as an "affiliate" of TDC as such term is
used in Rule 13e-3 of the Exchange Act .

                                SPECIAL FACTORS
                                ---------------

     Purpose
     -------

     The purpose of this transaction is to acquire the rights to all products
and product candidates developed or under development by ALZA and TDC pursuant
to the Development Agreement dated March 10, 1993 between ALZA and TDC. ALZA
believes that it is in the best interests of ALZA and ALZA's stockholders to
exercise the Purchase Option at this time.

     As ALZA is exercising certain previously granted rights, no other options
were considered.

     The transaction is structured pursuant to the terms of the previously
granted Purchase Option as set forth in TDC's Restated Certificate. This
transaction is being undertaken at this time because TDC has no significant
funds remaining to expend on product development and the Purchase Option
otherwise would have expired no later than January 15, 1998.

     Consequences
     ------------

     The transaction reported herein will cause TDC to become a wholly-owned
subsidiary of ALZA. ALZA anticipates that TDC will be de-listed from the
Nasdaq National Market and will have its public reporting obligations
suspended. The federal tax consequences to TDC are that utilization of TDC's
losses and other tax carryovers may be limited under Section 382 of the
Internal Revenue Code of 1986, as amended (the "Code").

     The transaction reported herein will cause ALZA to own 100% of TDC. As a
result, ALZA will indirectly own all of the assets of TDC. Accordingly, ALZA
will report 100% of the net book value and net earnings of TDC. There will be
no significant federal tax consequences to ALZA as a result of the exercise of
the Purchase Option.

                                       3
<PAGE>
 
     The transaction reported herein will cause each stockholder of Class A
Common Stock to dispose of his or her Class A Common Stock for consideration
equal to that stockholder's pro rata share of the exercise price identified
above.  This consideration is the amount specified in the Restated Certificate
provided in 1993.  The federal income tax consequences to such stockholder, in
general terms, are set forth below.

     The following discussion sets forth federal income tax considerations under
the Code for stockholders with respect to cash received by stockholders for the
Class A Common Stock. This discussion is intended only to provide general
information to stockholders that are subject to United States federal income
tax; it may not address all relevant federal income tax consequences to such
persons or to other categories of stockholders, e.g., foreign persons, dealers
in securities, and stockholders that are exempt from federal income tax. This
discussion is based upon present federal income tax laws and does not attempt to
anticipate changes, including changes in tax rates, that may be made under
currently pending legislative proposals. This discussion assumes that the Class
A Common Stock was at all relevant times capital assets of the stockholders.
This discussion does not address state, local or foreign tax considerations. ALL
STOCKHOLDERS ARE URGED TO CONSULT THEIR OWN TAX ADVISORS.

     Holders of Class A Common Stock will have a capital gain or loss due to
ALZA's exercise of the Purchase Option equal to the difference between (a) the
amount of the cash received, and (b) their basis in the Class A Common Stock
surrendered. Gain or loss due to the exercise of the Purchase Option should be
long-term if the Class A Common Stock has been held for more than one year at
the time of exercise of the Purchase Option. The Internal Revenue Service
("IRS") may assert, however, that the holding period of the Class A Common
Stock does not begin until such date as the Purchase Option is exercised and
that capital gain or loss upon exercise of the Purchase Option is therefore
short-term. Limitations may apply to deduction of capital loss.

     To the extent that holders of Class A Common Stock have not provided
appropriate taxpayer identification numbers on IRS Form W-9 or a substitute
therefor, such stockholders may be subject to backup withholding by ALZA.

          Fairness
          --------

     ALZA reasonably believes that the transaction reported herein is fair to
the holders of TDC Class A Common Stock. None of ALZA's directors dissented to
the transaction. 

                                       4
<PAGE>
 
Julian N. Stern and Dr. Alejandro Zaffaroni abstained from voting on such
transaction because they each own shares of Class A Common Stock.

     The material factor upon which this belief is based is set forth below.

     Stockholder Awareness of Purchase Option

     The initial public holders of the Class A Common Stock received such stock
     as a dividend from ALZA in 1993. The Purchase Option was a feature of the
     Class A Common Stock at that time and was described in the ALZA Information
     Statement dated March 10, 1993 distributed in connection with this
     distribution. The Purchase Option was also set forth in the Restated
     Certificate, which was publicly filed both with the Delaware Secretary of
     State and the Securities and Exchange Commission (the "Commission") prior
     to the distribution. Pursuant to the Restated Certificate, the stock
     certificates for the Class A Common Stock were legended to put the holders
     thereof on further notice about the Purchase Option. Stockholders were also
     advised of the Purchase Option in each Form 10-K (since the date of the
     distribution) and each recent Form 10-Q public filing made by each of ALZA
     and TDC with the Commission. Accordingly, the Purchase Option was present
     in the initial public distribution of the Class A Common Stock, was
     disseminated in TDC's charter documents, was discussed in ALZA's and TDC's
     periodic filings and was legended on each stock certificate for the Class A
     Common Stock. As a result, each TDC Class A Common stockholder received
     substantial notice as to the terms of the Purchase Option prior to making
     any investment decision with respect to the Class A Common Stock. In
     addition, recent public filings by both ALZA and TDC have indicated the
     status of funds available for product development and therefore when the
     potential exercise of the Purchase Option was likely to be triggered.
     During 1997, both parties have indicated that these funds would likely be
     exhausted during the third quarter of 1997.

     The Restated Certificate does not require any approval of the stockholders
of TDC for the exercise of the Purchase Option.

     After making reasonable inquiry of management of TDC, ALZA believes that no
directors of TDC have retained an unaffiliated representative to act solely on
behalf of any security holders of TDC as no action is required by either 
TDC's directors or security holders to effect the Purchase Option.

     Reports
     -------

     Neither ALZA nor, to the best of ALZA's knowledge after reasonable inquiry
of management of TDC, TDC, has received any report, opinion (other than an
opinion of counsel) or
                                       5
<PAGE>
 
appraisal from an outside party which is materially related to the transaction
described herein.

                    BACKGROUND AND SUMMARY OF TRANSACTION
                    -------------------------------------

Identification of ALZA:

     This filing is being made by ALZA. Its principal business is
pharmaceutical research and development and the commercialization of
pharmaceutical products. The address of its principal executive offices are
950 Page Mill Road, Palo Alto, CA 94304.

     During the last five years, ALZA has not been convicted in a criminal
proceeding (excluding traffic violations or similar misdemeanors).  During the
last five years, ALZA has not been a party to a civil proceeding of a judicial
or administrative body of competent jurisdiction and as a result of such
proceeding was or is subject to a judgment, decree or final order enjoining
further violations of, or prohibiting activities, subject to, federal or state
securities laws or finding any violation of such laws.


Identification and Securities of TDC:

     The issuer of the Class A Common Stock and the address of its principal
executive offices is:

                    Therapeutic Discovery Corporation
                    1454 Page Mill Road
                    Palo Alto, CA  94303-0806

     The exact title of the class of security which is the subject of this
filing is Class A Common Stock, par value $0.01, of TDC. The amount of Class A
Common Stock outstanding as of August 25, 1997, the most recent practicable
date, is 7,734,424. As of that date, there were also options to purchase 395,000
shares of Class A Common Stock immediately exercisable. The approximate number
of holders of record of such Class A Common Stock as of August 25, 1997, the
most recent practicable date, is 5,604.

     The principal market in which the Class A Common Stock is being traded is
the Nasdaq National Market.  The range of high and low bid quotations for the
Class A Common Stock for each quarterly period during the past two years is:

<TABLE>
<CAPTION>
        Period               High         Low
- -----------------------   ----------   ---------
<S>                       <C>          <C>
June 30, 1995                  7.875        6.00
September 30, 1995              7.75        6.75
December 31, 1995               7.25        6.75
March 31, 1996                10.625       7.125
June 30, 1996                  9.875       8.875
September 30, 1996             10.00        8.00
December 31, 1996             11.375       9.375
March 31, 1997                11.375       10.50
June 30, 1997                 11.375      10.625
</TABLE>

                                       6
<PAGE>
 
     To the best of ALZA's knowledge, after making reasonable inquiry, TDC has
not paid any dividends on the Class A Common Stock in the past two years.

     TDC is restricted from paying any dividends on the Class A Common Stock if,
after payment of such dividend, the amount of TDC's cash, cash equivalents and
short-term and long-term investments would be less than the Available Funds as
such term is defined in the Restated Certificate.


Past Contacts, Transactions or Negotiations:

     The nature and approximate amount in dollars of any transaction which has
occurred since the commencement of TDC's second full fiscal year preceding the
date of this Statement between ALZA and TDC are as follows:

              (i)   Since the commencement of TDC's second full fiscal year
                    preceding the date of this Statement, TDC paid approximately
                    $225,000,000 to ALZA pursuant to a Development Agreement
                    between ALZA and TDC dated March 10, 1993 whereby ALZA was
                    retained by TDC to undertake activities related to the 
                    selection and development of pharmaceutical products.

              (ii)  Since the commencement of TDC's second full fiscal year
                    preceding the date of this Statement, TDC paid approximately
                    $500,000 to ALZA pursuant to a Services Agreement 

                                       7
<PAGE>
 
                    between ALZA and TDC dated March 10, 1993 whereby ALZA was
                    retained by TDC to provide certain administrative services
                    to TDC (such as legal and accounting) in exchange for
                    payment of ALZA's costs in the provision of such services.

              (iii) There is also (a) a Technology License Agreement dated March
                    10, 1993 between ALZA and TDC, whereby ALZA licensed certain
                    proprietary technology to TDC, and (b) a License Option
                    Agreement dated March 10, 1993 between ALZA and TDC, whereby
                    TDC granted ALZA an option to license certain products from
                    TDC. No amounts have been paid by either of ALZA or TDC to
                    the other pursuant to such agreements since the commencement
                    of TDC's second full fiscal year preceding the date of this
                    Statement except as set forth in section (iv) below.

              (iv)  In January of 1997, ALZA exercised its option to license
                    from TDC for 12 European countries a second-generation
                    transdermal testosterone product to follow ALZA's existing
                    Testoderm(R) product. ALZA entered into an agreement with
                    Ferring N.V. to market the TDC product in such countries. As
                    a result of ALZA's exercise of this license and the
                    arrangement with Ferring, ALZA paid TDC $580,000, a portion
                    of the upfront payment ALZA received from Ferring, and will
                    receive payments from ALZA based on sales of the product in
                    the 12 European countries covered by ALZA's agreement with
                    Ferring.

              (v)   In February of 1997, ALZA exercised its option to license
                    from TDC a once-daily OROS(R) hydromorphone product on a
                    worldwide basis. ALZA entered into an agreement with Knoll
                    Pharmaceutical Company and Knoll A.G. (together "Knoll") for
                    the further clinical development and worldwide
                    commercialization of that product. As a result of ALZA's
                    exercise of the license, TDC will receive a portion of the
                    amounts ALZA receives from Knoll based on worldwide sales of
                    the product, and a portion of certain milestone payments
                    made by Knoll to ALZA.

                                       8
<PAGE>
 
Terms of the Transaction:

     ALZA exercised its option to purchase all of TDC's Class A Common Stock on
August 25, 1997 by delivering an exercise notice to TDC. The terms of the
Purchase Option are set forth in TDC's Restated Certificate. Pursuant to the
Restated Certificate, the exercise price of the Purchase Option is $100 million.
ALZA has determined that September 29, 1997 will be the Closing Date. ALZA will
deposit the exercise price with Boston EquiServe, L.P., as Payment Agent, on or
prior to that date. Promptly following the Closing Date, and upon receipt of
stock certificates for the Class A Common Stock as instructed by the Payment
Agent, the Payment Agent will distribute the exercise price pro rata to each
person or entity who was a holder of Class A Common Stock at the close of
business on the Closing Date. In the case of any person or entity holding Class
A Common Stock in a brokerage account, the broker will credit the relevant
account with such amount.

     In accordance with the terms of the Restated Certificate, the stockholders
of the Class A Common Stock do not need to take any steps to approve the
purchase.  Title to the Class A Common Stock will automatically vest in ALZA on
the Closing Date and the exercise price will be paid to such stockholders, upon
tender of their stock certificates directly or through their brokers, in
accordance with their respective interests.

Plans or Proposals of ALZA:

     Subsequent to the purchase of the Class A Common Stock by ALZA, TDC will be
a wholly-owned subsidiary of ALZA. ALZA anticipates de-listing TDC from the
Nasdaq National Market and suspending its reporting requirements with the
Securities and Exchange Commission by filing a Form 15. ALZA intends to replace
TDC's officers and Board of Directors with ALZA employees.

Interest in Securities of TDC:

     As of August 25, 1997, no shares of Class A Common Stock of TDC are
beneficially owned by ALZA, by any pension, profit sharing or similar plan of
ALZA or, to ALZA's knowledge after reasonable inquiry of management of TDC, by
TDC, by each executive officer and director of either ALZA, TDC, any person
controlling either ALZA or TDC or any executive officer of any corporation
ultimately in control of either ALZA or TDC, or by any associate or majority
owned subsidiary of either ALZA or TDC except as set out on the following table:

                                       9
<PAGE>
 
<TABLE>
<CAPTION>
                                                                                                     Immediately
                                                                     Direct         Indirect         Exercisable
Name                            Position                           Ownership       Ownership           Options
- ----                            --------                           ---------       ---------         -----------
<S>                              <C>                             <C>             <C>                 <C>
Blaschke, Dr. Terrence F.        Director of TDC                         4,500           6,200           40,000
 
Cozadd, Bruce C.                 Senior Vice President and                  15
                                 Chief Financial Officer of ALZA
 
Fethe, Harold                    Vice President, Human                                   3,304
                                 Resources of ALZA
 
Fulscher, Dr. Gary V.            Senior Vice President,                  4,489           4,693
                                 Operations of ALZA
 
Hoffmann, David R.               Vice President, Finance and             1,622           6,223
                                 Secretary of TDC

Lairson, Dr. Paul D.             Director of TDC                                                         40,000
 
Martin, Suzanne G.               Vice President, Research and              695
                                 Development Administration of TDC
 
Neil, Gary L., Ph.D.             Director, President and Chief                          12,000          160,000
                                 Executive Officer of TDC
 
Phipps, Allen M.                 Chairman of the Board of TDC           10,000                           60,000
 
Sommers, William P, Ph.D.        Director of TDC                                         2,919           40,000
 
Stern, Julian N.                 Director and Secretary of ALZA          9,393
 
Theeuwes, Dr. Felix              President, New Ventures and               413          17,064
                                 Chief Scientist of ALZA
 
Zaffaroni, Dr. Alejandro         Co-Chairman of the Board and           95,594
                                 Founder of ALZA
</TABLE>

As of December 31, 1996 ALZA's 401(k) tax deferral investment plan owned 18,902
shares of Class A Common Stock for the accounts of certain ALZA employees. The 
employees direct the investment of these accounts. Some of the shares reported 
as indirectly owned by ALZA employees in the table above are included in the 
foregoing amount.

                                       10
<PAGE>
 
CONTRACTS, ARRANGEMENTS OR UNDERSTANDINGS WITH RESPECT TO TDC'S CLASS A COMMON
STOCK:

     Article FIFTH of the Restated Certificate provides ALZA with the Purchase
Option. The Purchase Option provides that ALZA may purchase all, but not less
than all, of the issued and outstanding Class A Common Stock at any time prior
to the earlier of: (i) 60 days after the later of (a) the date of filing with
the Commission or (b) the due date of TDC's Form 10-K or Form 10-Q containing a
balance sheet showing that TDC has less than an aggregate of $5 million in cash,
cash equivalents, and short-term and long-term investments, or (ii) June 30,
1999. ALZA may exercise the Purchase Option at any time prior to such expiration
date by mailing an exercise notice to TDC. This exercise notice must identify
certain information, including a Closing Date for the purchase and the exercise
price and form of consideration to be paid to TDC stockholders. The Closing Date
must be within 90 days of the exercise date but may be extended by ALZA in
certain circumstances outlined in the Restated Certificate, such as the need for
regulatory clearance. ALZA exercised the Purchase Option by providing the
foregoing exercise notice to TDC on August 25, 1997. The Closing Date has been
set for September 29, 1997.

     From the date of exercise of the Purchase Option until the Closing Date,
TDC is prohibited by the terms of the Restated Certificate from engaging in any
extraordinary corporate activity without the prior written consent of ALZA.

     Article FOURTH of the Restated Certificate provides that as soon as ALZA
exercises the Purchase Option, TDC's board shall cease to be classified, the
number of authorized TDC directors shall be increased in accordance with a
formula set forth in the Restated Certificate and the holders of TDC's Class B
Common Stock (currently ALZA) shall have the sole right to appoint the directors
thereafter.

     Within 15 days after the mailing of the exercise notice to TDC, TDC must
provide ALZA with a status statement containing certain financial information.
This financial information includes all actual and contingent liabilities of
TDC. ALZA then may reduce the exercise price by the amount of such liabilities. 
It is not anticipated that any reduction will occur in the current circumstances
of this transaction.

     ALZA must designate a Payment Agent who will distribute the exercise price
to the TDC stockholders. ALZA must also deposit both the exercise price, and
irrevocable instructions to pay the exercise price to TDC stockholders of record
as of the close of business on the Closing Date, with the Payment Agent on or
prior to the Closing Date.

                                       11
<PAGE>
 
     On the Closing Date, title to the Class A Common Stock will automatically
transfer to and vest in ALZA without further act of any person. The Payment
Agent will then disburse the exercise price to TDC stockholders upon tender of 
stock certificates to the Payment Agent as instructed thereby.

                      OTHER PROVISIONS OF THE TRANSACTION
                      -----------------------------------

     Appraisal rights are not afforded under either applicable law or the
Restated Certificate to TDC stockholders in respect of the exercise of the
Purchase Option and none will be afforded by either ALZA or TDC.  ALZA is not
aware of any rights available to objecting holders of Class A Common Stock under
applicable law.

     ALZA is unaware, after making reasonable inquiry of TDC, of any grant of
access to unaffiliated security holders to the corporate files of either TDC or
ALZA or the appointment of counsel or appraisal services for unaffiliated
security holders at the expense of either TDC or ALZA.

                        SUMMARY OF FINANCIAL STATEMENTS
                        -------------------------------

Selected Consolidated Financial Data

Set forth below is a summary of TDC's selected consolidated financial data,
which has been excerpted or derived from the information contained in TDC's
Annual Reports on Form 10-K for the years ended December 31, 1996 and 1995, and
its Quarterly Report on Form 10-Q for the quarterly period ended June 30, 1997. 
More comprehensive information is included in such reports and other
documents filed by TDC with the Commission, and the following information should
be read in conjunction with such reports and other documents and the financial
information (including any related notes and Management's Discussion and
Analysis of Financial Condition and Results of Operations) contained therein.

Statement of Income Data:
(in millions, except per share amounts)

<TABLE> 
<CAPTION> 
                                   Year ended December 31,       Six Months ended June 30,
                                     1996          1995            1997             1996
                                   -------------------------------------------------------
<S>                                <C>           <C>             <C>             <C> 
Total revenues                     $   8.2       $ 11.5          $  1.5          $  4.7
Net loss                           $  94.8       $ 59.4          $ 48.3          $ 46.5 
Loss per share                     $ 12.25       $ 7.68          $ 6.24          $ 6.01  
Ratio of earnings
 to fixed changes                      N/A          N/A             N/A             N/A
</TABLE> 

<TABLE> 
<CAPTION> 
Balance Sheet Data:
(in millions, except per share amounts)

                               December 31, 1996                  June 30, 1997                 
                               -----------------                  -------------                 
<S>                            <C>                                <C>                           
Working capital                    $67.9                             $20.9                      
Total assets                        88.5                              40.5                      
Total stockholders'                                                                      
 equity                             69.1                              21.8                      
Book value per share               $8.94                             $2.82                      
</TABLE> 

Note to Selected Consolidated Financial Data:

(1) TDC had no material fixed charges for the periods presented.

                                  CONCLUSION
                                  ----------

     If you have any questions with respect to this transaction, please contact
ALZA Corporate and Investor Relations at (650) 494-5222.

     ALZA and TDC wish to thank you for your investment and interest in TDC.  We
sincerely hope that you are pleased with your return on this investment.

                                       12
<PAGE>
 
                                 EXHIBIT INDEX

 EXHIBIT
- ---------

   17(c)      Restated Certificate of Incorporation of Therapeutic Discovery
              Corporation as filed with the Secretary of State of the State of
              Delaware on April 1, 1993.

   17(d)      Notice to Stockholders of Therapeutic Discovery Corporation (for
              purposes of this Statement only, Annex A thereto being Item 17(c)
              above).

   99.1       Financial information extracted from TDC Form 10-Q for the
              quarterly period ended June 30, 1997.

   99.2       Financial information extracted from TDC Form 10-K for the year
              ended December 31, 1996.

   99.3       Financial information extracted from TDC Form 10-K for the year
              ended December 31, 1995.

<PAGE>
                                                                    EXHIBIT 99.1
 

                       THERAPEUTIC DISCOVERY CORPORATION
                         (a development stage company)

                      Statement of Operations (unaudited)
          (in thousands, except number of shares and per share data)
<TABLE>
<CAPTION>
Period From
                                                     Three Months Ended            Six Months Ended            Inception
                                                           June 30,                    June 30,            (November 1992)
                                                      1997          1996          1997          1996        to June 30, 1997
                                                   ----------    ----------    ----------      --------     ----------------
<S>                                                <C>           <C>           <C>             <C>          <C>
REVENUES:
 
  Net interest and investment income               $      838    $    1,993    $    1,505    $    4,665           $  35,841
 
EXPENSES:
  Research and development
    paid to ALZA Corporation                           26,375        28,312        48,616        49,886             253,995
 
General and administrative                                513           705         1,168         1,254              10,624
                                                   ----------    ----------    ----------    ----------    ----------------
    Total expenses                                     26,888        29,017        49,784        51,140             264,619
                                                   ----------    ----------    ----------    ----------    ----------------
 
Loss before tax                                       (26,050)      (27,024)      (48,279)      (46,475)          $(228,778)
 
Income tax                                                  -             -             -             -                 301
                                                   ----------    ----------    ----------    ----------    ----------------
 
Net loss                                           $  (26,050)   $  (27,024)   $  (48,279)   $  (46,475)          $(228,477)
                                                   ----------    ----------    ----------    ----------    ----------------
 
Net loss per common share                          $    (3.37)   $    (3.49)   $    (6.24)   $    (6.01)
                                                   ----------    ----------    ----------    ----------
 
Weighted average common shares                      7,734,524     7,734,524     7,734,524     7,734,524
                                                   ==========    ==========    ==========    ==========
</TABLE>

                            See accompanying notes.

                                      -2-
<PAGE>
 
                       THERAPEUTIC DISCOVERY CORPORATION
                         (a development stage company)

                           Balance Sheet (unaudited)
          (in thousands, except number of shares and per share data)
<TABLE>
<CAPTION>
ASSETS                                                 June 30,       December 31,
                                                         1997            1996
                                                       ---------      ------------
<S>                                                    <C>          <C>
Current assets:
   Cash and cash equivalents                           $   1,913       $  10,597
   Short-term investments                                 36,643          74,707
   Interest receivable                                       448             809
   Prepaid expenses and other
      current assets                                         395           1,033
                                                       ---------       ---------
 
         Total current assets                             39,399          87,146
 
Long-term assets:
   Employee loans, long-term                                 300             300
   Prepaid expenses and other
      long-term assets                                         -               -
   Organization costs, (net of
      accumulated amortization)                              776           1,014
                                                       ---------       ---------
 
Total assets                                           $  40,475       $  88,460
                                                       =========       =========
 
LIABILITIES AND STOCKHOLDERS' EQUITY
 
Current liabilities:
   Payable to ALZA Corporation                         $  18,445       $  19,129
   Accounts payable and other current liabilities             22              72
                                                       ---------       ---------
 
      Total current liabilities                           18,467          19,201
 
Long-term liabilities:
   Deferred compensation                                     229             115
 
Total liabilities
 
Stockholders' equity:
   Class A Common Stock, $.01 par
      value, 12,000,000
      shares authorized, 7,734,424
      issued and outstanding                                  77              77
   Class B Common Stock, $.01 par
      value, 100 shares authorized,
      issued and outstanding                                   -               -
   Additional paid-in capital                            251,650         251,650
   Net unrealized losses on
      available-for-sale securities                         (493)         (1,166)
   Deficit accumulated during the
      development stage                                 (228,477)       (180,198)
   Deferred compensation                                    (978)         (1,219)
                                                       ---------       ---------
 
      Total stockholders' equity                          21,779          69,144
                                                       ---------       ---------
 
Total liabilities and stockholders' equity             $  40,475       $  88,460
                                                       =========       =========
</TABLE>

                            See accompanying notes.

                                      -3-
<PAGE>
 
                       THERAPEUTIC DISCOVERY CORPORATION
                         (a development stage company)

          Condensed Consolidated Statement of Cash Flows (unaudited)
                                (in thousands)

<TABLE>
<CAPTION>
                                                                                        Period From
                                                             Six Months Ended            Inception
                                                                 June 30,           (November 1992) to
                                                             1997         1996         June 30, 1997
                                                          ----------   ----------   -------------------
<S>                                                       <C>          <C>          <C>
CASH FLOWS FROM OPERATING ACTIVITIES:
 
Net loss                                                   $(48,279)    $(46,475)          $  (228,477)
Adjustments to reconcile net loss
   to net cash used in operating
      activities:
   Amortization of organization costs                           238          358                 2,804
   Amortization of deferred compensation                        241           82                   969
    (Increase) decrease in assets:
      Interest receivable                                       361          (81)                 (448)
      Other receivable                                            -            -                  (252)
      Organization costs                                          -            -                (3,581)
      Prepaid expenses and other assets                         638           52                  (143)
   Increase (decrease) in liabilities:
      Payable to ALZA Corporation                              (684)       3,924                18,445
      Accounts payable and other current liabilities            (50)         (52)                   22
      Long-term liabilities                                     114           12                   229
                                                           --------     --------           -----------
         Total adjustments                                      858        4,295                18,045
                                                           --------     --------           -----------
            Net cash used in operating
               activities                                   (47,421)     (42,180)             (210,432)
 
CASH FLOWS FROM INVESTING ACTIVITIES:
 
   Investments in available-for-sale
      securities                                                  -      (25,667)           (1,363,067)
   Sale of available-for-sale securities                     35,737       58,503               622,411
   Maturities of available-for-sale
      securities                                              3,000        8,070               703,523
   Employee loans, long-term                                      -            -                  (300)
                                                           --------     --------           -----------
            Net cash provided by
                (used in) investing activities               38,737       40,906               (37,433)
 
CASH FLOWS FROM FINANCING ACTIVITIES:
 
   Issuance of Class B Common Stock                               -            -                     2
   Issuance of Class A Common Stock                               -            -               249,998
   Issuance costs                                                 -            -                  (222)
                                                           --------     --------           -----------
            Net cash provided by financing
               activities                                         -            -               249,778
                                                           --------     --------           -----------
 
Net increase (decrease) in cash and
   cash equivalents                                          (8,684)      (1,274)                1,913
 
Cash and cash equivalents at beginning of period             10,597       13,314                     -
                                                           --------     --------           -----------
 
Cash and cash equivalents at end of period                 $  1,913     $ 12,040           $     1,913
                                                           ========     ========           ===========
</TABLE>

                            See accompanying notes.

                                      -4-
<PAGE>
 
                                               THERAPEUTIC DISCOVERY CORPORATION
                                                   (a development stage company)
                                                                   June 30, 1997


                   Notes to Financial Statements (unaudited)

1.   BASIS OF PRESENTATION

     Therapeutic Discovery Corporation ("TDC") was incorporated in Delaware on
November 12, 1992 and commenced operations on June 11, 1993. TDC was formed to
select and develop new human pharmaceutical products (the "TDC Products")
combining the proprietary drug delivery systems of ALZA Corporation ("ALZA")
with various drug compounds. TDC has been engaged in these and related
activities since its formation. TDC's principal activities consist of research
and development activities under its agreements with ALZA.

     Under generally accepted accounting principles, TDC is considered a
development stage company and, accordingly, must present financial information
for the three and six months ended June 30, 1997 and 1996 and for the period
from inception (November 1992) to June 30, 1997.

     The information at June 30, 1997, for the three and six months ended June
30, 1997 and 1996, and the period from inception (November 1992) to June 30,
1997 is unaudited, but includes all adjustments (consisting only of normal
recurring adjustments) which the management of TDC believes necessary for fair
presentation of the results for such periods. Interim results are not
necessarily indicative of results for a full year. The financial statements
should be read in conjunction with the audited financial statements of TDC for
the year ended December 31, 1996 included in TDC's 1996 Annual Report on 
Form 10-K.

2.   SHORT-TERM INVESTMENTS

     TDC has classified its entire investment portfolio as available-for-sale.
TDC's investment portfolio is available for current operations and, therefore,
has been classified as a current asset. Investments in the available-for-sale
category are carried at fair market value with unrealized losses recorded as a
separate component of stockholders' equity. At June 30, 1997, net unrealized
losses on available-for-sale securities were approximately $0.5 million. The
cost of securities when sold is based upon specific identification.

                                      -5-
<PAGE>
 
                                               THERAPEUTIC DISCOVERY CORPORATION
                                                   (a development stage company)
                                                                   June 30, 1997


The following is a summary of available-for-sale securities at June 30, 1997:
<TABLE>
<CAPTION>
 
                                                                                      Available-for-Sale Securities
                                                                                      -----------------------------
                                                                                                                   Estimated
                                                                                         Unrealized   Unrealized      Fair
(in thousands)                                                                  Cost       Gains        Losses        Value
                                                                             ---------   ----------   ----------    ---------
<S>                                                                          <C>          <C>         <C>           <C>
U.S. Treasury securities
  and obligations of U.S.
  government agencies                                                          $23,159      $     0        $(300)     $22,859
 
Collateralized mortgage
  obligations and asset
  backed securities                                                              3,997            0         (125)       3,872
 
Corporate securities                                                            10,634            0         ( 68)      10,566
                                                                               -------      -------     ----------    ---------
                                                                               $37,790      $     0        $(493)     $37,297
                                                                               =======      =======     ==========    =========
</TABLE>
 
     The amortized cost and estimated fair value of debt and marketable
securities at June 30, 1997, by contractual maturity, are shown below. Expected
maturities will differ from contractual maturities because the issuers of the
securities may have the right to prepay obligations without prepayment
penalties.
 
<TABLE>
<CAPTION>
                                                      Estimated
                                                         Fair
(in thousands)                            Cost          Value
                                          ---------   ----------
<S>                                       <C>         <C>
Due in one year or less                     $17,177      $17,085
Due after one year through               
 four years                                  13,676       13,438
Due after four years through             
 eight years                                  6,937        6,774
                                          ---------   ----------
                                            $37,790      $37,297
                                          =========   ==========
</TABLE>

                                      -6-
<PAGE>
 
                                               THERAPEUTIC DISCOVERY CORPORATION
                                                   (a development stage company)
                                                                   June 30, 1997

3.   ARRANGEMENTS WITH ALZA CORPORATION

     TDC was formed by ALZA for the purpose of selecting and developing new
human pharmaceutical products combining ALZA's proprietary drug delivery
technologies with various drug compounds, and commercializing such products,
most likely through licensing to ALZA.  In connection with the distribution
to ALZA stockholders of a special dividend of units (each unit includes one
share of TDC Class A Common Stock and one warrant to purchase one-eighth of
one share of ALZA Common Stock at an exercise price of $65 per share), ALZA
made a $250 million cash contribution to TDC's capital.  The cash is being
used primarily to fund activities under a development agreement (the
"Development Contract") between ALZA and TDC pursuant to which ALZA conducts
research and development activities on behalf of TDC.  In accordance with
TDC's Restated Certificate of Incorporation, on June 11, 1996, the Units
separated into their component securities--TDC Class A Common Stock and ALZA
warrants.  As a result of the separation, both securities are listed and
trade independently on the Nasdaq Stock Market.  The trading symbol for the
TDC Class A Common Stock is "TDCA".

     PRODUCT LICENSE OPTION. TDC has granted to ALZA an option to acquire, on a
product-by-product and country-by-country basis, a perpetual, exclusive, 
royalty-bearing license to make, have made, use and sell any or all TDC 
Products (the"License Option"). If ALZA exercises its License Option for any TDC
Product (a "Licensed TDC Product"), ALZA will pay the following royalties
("Product Royalties") to TDC:

     (a)  if the Licensed TDC Product is sold by ALZA, Product Royalties of up
to a maximum of 5% of ALZA's net sales of the Licensed TDC Product determined as
follows: (i) 1% of net sales, other than sales to distributors or sublicensees
who agree to pay royalties or make percentage of sales payments to ALZA or any
affiliate of ALZA and in respect of which the Product Royalties are determined
as provided in clause (b) below, plus (ii) an additional 0.1% of such net sales
for each full $1 million of the Development Costs (as defined in the Development
Contract) of the Licensed TDC Product paid by TDC; and

     (b)  if the Licensed TDC Product is sold by a third party, Product
Royalties of up to a maximum of 50% of third party payments to ALZA with respect
to such Licensed TDC Product determined as follows: (i) 10% of such third party
payments, plus (ii) an additional 1% of such third party payments for each full
$1 million of the Development Costs of the Licensed TDC Product paid by TDC.

In each case, net sales and other third party payments will be reduced by the
dollar amount of any license or similar payments due to third parties from
ALZA with respect to the Licensed TDC Product.  In addition, ALZA has the
option to buy out TDC's right to receive Product Royalties with respect to
any Licensed TDC Product on either a country-by-country or worldwide basis.


                                      -7-
<PAGE>
 
                                               THERAPEUTIC DISCOVERY CORPORATION
                                                   (a development stage company)
                                                                   June 30, 1997


     ALZA may exercise the License Option with respect to any TDC Product, on a
country-by-country basis, at any time until 90 days after the earliest of the
following: (a) approval to market the TDC Product in such country by the
appropriate regulatory agency; (b) approval to market the TDC Product in the
United States by the FDA; or (c) the expiration of the Purchase Option (as
defined below).

     PURCHASE OPTION.  ALZA has certain rights pursuant to the Restated
Certificate of Incorporation of TDC to purchase all (but not less than all)
of the TDC Class A Common Stock (the "Purchase Option").  Except as otherwise
set forth below, the Purchase Option may be exercised by written notice to
TDC at any time during the period ending on December 31, 1999; provided that
such date will be extended for successive one year periods if, as of any June
30 beginning with June 30, 1999, TDC has not used at least 90% of all funds
available for product development as set forth in the Development Contract.
Notwithstanding the foregoing, the Purchase Option will terminate on the 60th
day after the later of the filing or the due date of a Form 10-K or Form 10-Q
of TDC containing a balance sheet showing less than $5 million of cash, cash
equivalents and short-term and long-term investments.  Based on TDC's current
rate of expenditures on TDC Products, TDC's balance sheet will reach this
threshold during the third quarter of 1997.

     If the Purchase Option is exercised, the exercise price (the "Purchase
Option Exercise Price") will be the greatest of the following:

     (a)  $100 million;

     (b)  the greater (i) of 25 times the worldwide royalties and sublicensing
          fees paid by ALZA to TDC during four specified calendar quarters or
          (ii) 100 times such royalties and sublicensing fees during a specified
          calendar quarter, in each case, less any amounts previously paid by
          ALZA to exercise a buy-out option with respect to any product;

     (c)  the fair market value of one million shares of ALZA Common Stock; or

     (d)  $325 million less all amounts spent by TDC under the Development
          Contract.

Based on information available at June 30, 1997, the Purchase Option Exercise
Price is expected to be $100 million.

     At the time of exercise of the Purchase Option ALZA may decide, in its
discretion, to pay the Purchase Option Exercise Price in cash, in ALZA Common
Stock, or in any combination of cash and ALZA Common Stock.


                                      -8-
<PAGE>
 
                                               THERAPEUTIC DISCOVERY CORPORATION
                                                   (a development stage company)
                                                                   June 30, 1997

     ALZA has not made a decision as to whether it will exercise the Purchase
Option.  ALZA is under no obligation to exercise the Purchase Option and will
do so only if ALZA determines that it is in the best interests of ALZA and
its stockholders at the time the decision is made.

     For a more detailed discussion of the License Option, the Purchase Option
and the arrangements between ALZA and TDC, see TDC's 1996 Annual Report on
Form 10-K.



                                      -9-

<PAGE>
 
                                                                    EXHIBIT 99.2

               REPORT OF ERNST & YOUNG LLP, INDEPENDENT AUDITORS



The Board of Directors and Stockholders of
Therapeutic Discovery Corporation

  We have audited the accompanying balance sheet of Therapeutic Discovery
Corporation (a development stage company) as of December 31, 1996 and 1995,
and the related statements of operations, stockholders' equity and cash flows
for the years ended December 31, 1996, 1995 and 1994 and for the period from
inception (November 1992) to December 31, 1996.  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 in accordance with generally accepted auditing
standards. Those standards 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.
An audit also includes assessing the accounting principles used and
significant estimates made by management, as well as evaluating the overall
financial statement presentation.  We believe that our audits provide a
reasonable basis for our opinion.

  In our opinion, the financial statements referred to above present fairly,
in all material respects, the financial position of Therapeutic Discovery
Corporation (a development stage company) at December 31, 1996 and 1995 and
the results of its operations and its cash flows for the years ended December
31, 1996, 1995 and 1994 and for the period from inception (November 1992) to
December 31, 1996 in conformity with generally accepted accounting
principles.

                                                           /s/ Ernst & Young LLP

Palo Alto, California
February 14, 1997



                                      F-1
<PAGE>
 
                       THERAPEUTIC DISCOVERY CORPORATION
                         (A DEVELOPMENT STAGE COMPANY)

                                 BALANCE SHEET
          (IN THOUSANDS, EXCEPT NUMBER OF SHARES AND PER SHARE DATA)
<TABLE>
<CAPTION>
 
ASSETS                                                December 31,    December 31,
                                                          1996            1995
                                                      ------------    ------------
<S>                                                   <C>              <C>
Current assets:
  Cash and cash equivalents                            $  10,597        $ 13,314
  Short-term investments                                  74,707         163,294
  Interest receivable                                        809           1,427
  Prepaid expenses and other current assets                1,033             278
                                                       ---------        --------
  Total current assets                                    87,146         178,313
 
 
Long-term assets:
  Employee loans, long-term                                  300             300
  Prepaid expenses and other long-term assets                  -           1,094
  Organization costs, (net of accumulated
    amortization)                                          1,014           1,730
                                                       ---------        --------
Total assets                                           $  88,460        $181,437
                                                       =========        ========
 
LIABILITIES AND STOCKHOLDERS' EQUITY
 
Current liabilities:
  Payable to ALZA Corporation                          $  19,129        $ 16,817
  Accounts payable and other liabilities                      72             148
                                                       ---------        --------
    Total current liabilities                             19,201          16,965
 
Long-term liabilities:
    Deferred compensation                                    115               -
 
Stockholders' equity:
  Class A Common Stock, $.01 par value,
     12,000,000 shares authorized, 7,734,424
     issued and outstanding                                   77              77
  Class B Common Stock, $.01 par value,
     100 shares authorized, issued and
     outstanding                                               -               -
  Additional paid-in capital                             251,650         251,650
  Net unrealized losses on available-for-sale
    securities                                            (1,166)           (262)
  Deficit accumulated during development stage          (180,198)        (85,448)
  Deferred compensation                                   (1,219)         (1,545)
                                                       ---------        --------
    Total stockholders' equity                            69,144         164,472
                                                       ---------        --------
Total liabilities and stockholders' equity             $  88,460        $181,437
                                                       =========        ========
</TABLE>

                            SEE ACCOMPANYING NOTES.

                                      F-2
<PAGE>
 
                       THERAPEUTIC DISCOVERY CORPORATION
                         (A DEVELOPMENT STAGE COMPANY)

                            STATEMENT OF OPERATIONS
          (IN THOUSANDS, EXCEPT NUMBER OF SHARES AND PER SHARE DATA)

<TABLE>
<CAPTION>
                                                                                             Period From
                                          Year Ended      Year Ended      Year Ended          Inception
                                          December 31,    December 31,    December 31,    (November 1992) to
                                             1996            1995            1994          December 31, 1996
                                          ------------    ------------    ------------    ------------------
<S>                                        <C>             <C>             <C>                 <C>
REVENUES:
 
  Net interest and investment income        $    8,215      $   11,540      $    8,673         $  34,336     
   and license fees                                                                                          
                                                                                                             
EXPENSES:                                                                                                    
                                                                                                             
  Research and development                                                                                   
  paid to ALZA Corporation                      99,953          68,923          31,634           205,379     
                                                                                                             
  General and administrative                     3,012           2,321           2,700             9,456     
                                            ----------      ----------      ----------        ----------     
                                                                                                             
  Total expenses                               102,965          71,244          34,334           214,835     
                                            ----------      ----------      ----------        ----------     
Loss before taxes                              (94,750)        (59,704)        (25,661)         (180,499)    
                                            ----------      ----------      ----------        ----------     
Income tax                                           -             301               -               301     
                                            ----------      ----------      ----------        ----------     
Net loss                                    $  (94,750)     $  (59,403)     $  (25,661)        $(180,198)    
                                            ----------      ----------      ----------        ----------     
Net loss per common share                   $   (12.25)     $    (7.68)     $    (3.32)
                                            ==========      ==========      ==========
Weighted average common shares               7,734,524       7,734,524       7,734,524
                                            ==========      ==========      ==========
</TABLE> 

                            SEE ACCOMPANYING NOTES.

                                      F-3
<PAGE>
 
                       THERAPEUTIC DISCOVERY CORPORATION
                         (A DEVELOPMENT STAGE COMPANY)
                       STATEMENT OF STOCKHOLDERS' EQUITY
          (IN THOUSANDS, EXCEPT NUMBER OF SHARES AND PER SHARE DATA)

<TABLE>
<CAPTION>
                                                                             Unrealized     Deficit
                                                                             losses on    Accumulated
                                       Class A     Class B     Additional    available-    During the                      Total
                            Common     Common       Common      Paid-in       for-sale    Development     Deferred     Stockholders'
                            Stock      Stock        Stock       Capital      securities      Stage      Compensation      Equity
                           --------   ---------   ---------   ----------    -----------   -----------   ------------   -------------
<S>                         <C>        <C>         <C>         <C>          <C>           <C>             <C>            <C>
Issuance of 100 shares
 of Common Stock for
 $20 per share to ALZA
 Corporation in
 November 1992               $  -        $  -        $  -       $      2        $  -           $  -          $  -        $      2


Issuance of 7,734,424
 shares of Class A
 Common Stock for
 approximately $32.32
 per share to ALZA
 Corporation in June
 1993, net of issuance
 costs of $222                  -          77           -        249,699           -              -             -         249,776


Conversion by ALZA
 Corporation of 100
 shares of Common Stock
 into 100 shares of
 Class B Common Stock
 in June 1993                   -           -          -               -           -              -             -               -


Deferred compensation
 resulting from grant
 of options through
 December 31, 1993              -           -         -            1,686           -              -        (1,686)              -


Amortization of
 deferred
 compensation                   -           -         -                -           -              -            80              80


Net loss                        -           -         -                -           -           (384)            -            (384)
                           ------     -------   -------         --------   ---------       --------      --------       ---------

BALANCE,
 DECEMBER 31,
 1993                           -          77         -          251,387          -            (384)       (1,606)        249,474
</TABLE>


                            SEE ACCOMPANYING NOTES.

                                      F-4
<PAGE>
 
                       THERAPEUTIC DISCOVERY CORPORATION
                         (A DEVELOPMENT STAGE COMPANY)
                       STATEMENT OF STOCKHOLDERS' EQUITY
          (IN THOUSANDS, EXCEPT NUMBER OF SHARES AND PER SHARE DATA)
<TABLE>
<CAPTION>
                                                                           Unrealized      Deficit
                                                                            losses on    Accumulated
                                       Class A    Class B    Additional     available-    During the                      Total
                              Common   Common     Common       Paid-in       for-sale     Development     Deferred     Stockholders'
                              Stock    Stock      Stock        Capital      securities      Stage       Compensation      Equity
                             -------- ---------  ---------  ------------  -------------  ------------- --------------  ------------
<S>                           <C>         <C>       <C>         <C>          <C>            <C>           <C>            <C>
Deferred compensation
 resulting from grant
 of options in the year
 ended December 31, 1994            -         -          -           261              -              -           (261)            -

Amortization of
 deferred
 compensation                       -         -          -             -              -              -            158           158


Net change in unrealized
 loss on available-for-sale
 securities                         -         -          -             -        (11,393)             -              -       (11,393)

Net loss                            -         -          -             -              -        (25,661)             -       (25,661)
                             -------- ---------  ---------  ------------  -------------  ------------- -------------- -------------

BALANCE,
 DECEMBER 31,
 1994                               -        77          -      251,648         (11,393)       (26,045)        (1,709)      212,578


Deferred compensation
 resulting from grant
 of options in the year
 ended December 31, 1995            -         -          -             2              -              -             (2)            -

Amortization of
 deferred
 compensation                       -         -         -              -              -              -            166           166

Net change in unrealized
 loss on available-for-sale
 securities                         -         -         -             -          11,131              -              -        11,131

Net loss                            -         -         -             -               -              -              -       (59,403)
                             -------- ---------  ---------  ------------  -------------  ------------- -------------- -------------
BALANCE,
 DECEMBER 31,
 1995                           $   -    $   77      $  -     $ 251,650       $    (262)    $  (85,448)     $  (1,545)     $164,472
</TABLE>

                            SEE ACCOMPANYING NOTES.

                                      F-5
<PAGE>
 
                       THERAPEUTIC DISCOVERY CORPORATION
                         (A DEVELOPMENT STAGE COMPANY)
                       STATEMENT OF STOCKHOLDERS' EQUITY
          (IN THOUSANDS, EXCEPT NUMBER OF SHARES AND PER SHARE DATA)
<TABLE>
<CAPTION>
                                                                              Unrealized      Deficit
                                                                               losses on     Accumulated
                                           Class A    Class B    Additional    available-    During the                   Total
                                Common     Common     Common      Paid-in       for-sale     Development   Deferred    Stockholders'
                                Stock      Stock      Stock       Capital      securities       Stage     Compensation    Equity
                               --------  ---------  ---------     ----------   -----------   -----------  ------------ ------------
<S>                              <C>       <C>       <C>           <C>          <C>           <C>          <C>           <C>
Deferred compensation
 resulting from grant
 of options in the year
 ended December 31, 1996              -          -          -              -             -             -             -            -


Amortization of
 deferred
 compensation                         -          -          -              -             -                         326          326


Net change in unrealized
 loss on available-for-sale
 securities                           -          -          -              -          (904)            -             -         (904)

Net loss                              -          -          -              -             -       (94,750)            -      (94,750)
                               --------  ---------  ---------     ----------   -----------   -----------  ------------ ------------
BALANCE,
 DECEMBER 31,
 1996                            $    -    $    77     $    -       $251,650       $(1,166)    $(180,198)      $(1,219)    $ 69,144
                               ========  =========  =========     ==========   ===========   ===========  ============ ============
</TABLE>

                            SEE ACCOMPANYING NOTES.

                                      F-6
<PAGE>
 
                       THERAPEUTIC DISCOVERY CORPORATION
                         (A DEVELOPMENT STAGE COMPANY)
 
                     CONSOLIDATED STATEMENT OF CASH FLOWS
              INCREASES (DECREASES) IN CASH AND CASH EQUIVALENTS
                                (IN THOUSANDS)
 
<TABLE>
<CAPTION>
                                                                                                                 Period from
                                                                Year Ended        Year Ended     Year Ended        Inception
                                                                December 31,     December 31,   December 31,   (November 1992) to
                                                                    1996            1995            1994        December 31, 1996
                                                                ------------     ------------   ------------   ------------------
<S>                                                               <C>             <C>            <C>              <C>
CASH FLOWS FROM OPERATING ACTIVITIES:
 
 Net loss                                                         $(94,750)       $(59,403)      $ (25,661)       $  (180,198)     
 Adjustments to reconcile net loss                                                                                                 
  to net cash used in operating activities:                                                                                        
  Amortization of organization costs                                   716             716             716              2,566      
  Amortization of deferred compensation                                326             164             158                728      
  (Increase) decrease in assets:                                                                                                   
   Interest receivable                                                 618           1,021             127               (809)     
   Other receivable                                                      -               -            (252)              (252)     
   Organization costs                                                    -               -               -             (3,581)     
   Prepaid expenses and other assets                                   339             123             130               (781)     
  Increase (decrease) in liabilities:                                                                                              
   Payable to ALZA Corporation                                       2,312           9,122           5,390             19,129      
   Accounts payable                                                      4              (2)            (47)                 5      
   Other current liabilities                                           (80)             (4)             52                 67      
   Long-term liabilities                                               115               -               -                115      
                                                                  --------        --------       ---------        -----------      
    Total adjustments                                                4,350          11,140           6,274             17,187      
                                                                  --------        --------       ---------        -----------      
     Net cash used in operating activities                         (90,400)        (48,263)        (19,387)          (163,011)     
                                                                                                                                   
CASH FLOWS FROM INVESTING ACTIVITIES:                                                                                              
                                                                                                                                   
 Investments in available-for-sale securities                      (25,667)        (42,863)       (294,121)        (1,363,067)     
 Sale of available-for-sale securities                              98,523          81,349         194,134            586,674      
 Maturities of available-for-sale securities                        14,827           3,041         137,918            700,523      
 Employee loans, long-term                                               -               -               -               (300)     
                                                                  --------        --------       ---------        -----------      
    Net cash provided by (used in) investing                                                                                       
     activities                                                     87,683          41,527          37,931            (76,170)     
                                                                                                                                   
CASH FLOWS FROM FINANCING ACTIVITIES:                                                                                              

  Issuance of Class B Common Stock                                       -               -               -                  2      
  Issuance of Class A Common Stock, net of                                                                                         
    issuance costs                                                       -               -               -            249,776      
                                                                  --------        --------       ---------        -----------      
        Net cash provided by financing                                                                                             
          activities                                                     -               -               -            249,778      
                                                                  --------        --------       ---------        -----------      
                                                                                                                                   
Net increase (decrease) in cash and cash                                                                                           
  equivalents                                                       (2,717)         (6,736)         18,544             10,597      
                                                                                                                                   
Cash and cash equivalents at beginning of period                    13,314          20,050           1,506                  -      
                                                                  --------        --------       ---------        -----------      
                                                                                                                                   
Cash and cash equivalents at end of period                         $10,597         $13,314         $20,050           $ 10,597      
                                                                  ========        ========       =========        ===========      
</TABLE>

                            SEE ACCOMPANYING NOTES.

                                      F-7
<PAGE>
 
                                               Therapeutic Discovery Corporation
                                                   (a development stage company)
                                                               December 31, 1996


                         NOTES TO FINANCIAL STATEMENTS

1.  ORGANIZATION AND SIGNIFICANT ACCOUNTING POLICIES

 Therapeutic Discovery Corporation ("TDC") was incorporated in Delaware on
November 12, 1992 and commenced operations on June 11, 1993.  Since it
commenced operations, TDC has been engaged in selecting and developing new
human pharmaceutical products combining the proprietary drug delivery systems
of ALZA Corporation ("ALZA") with various drug compounds.  TDC's principal
activities consist of research and development activities under its
agreements with ALZA.  Accordingly, TDC is considered a development stage
company.

 TDC incurred research and development expenses of approximately $100.0
million during 1996, $68.9 million during 1995, and $31.6 million during
1994.  Research and development expenses have totaled approximately $205.4
million for the period from inception (November 1992) to December 31, 1996.
Based on TDC's current rate of expenditures on TDC products, it is expected
that funds for product development will be exhausted in the second half of
1997 and product development funding by TDC will cease.  When cash available
for product development is exhausted, ALZA's purchase option with respect to
all of TDC's Class A Common Stock and option to license TDC products on a
product-by-product basis will be triggered, as described more fully in Note 2
below.  The Board of Directors of TDC has initiated activities to establish a
contingency plan for the continued operations of TDC in the event that ALZA
chooses not to exercise the purchase option, and has the right, under its
agreements with ALZA, to take necessary steps to cease development funding
and maintain an adequate level of available funds to ensure TDC's ability to
meet its operating cash needs through at least December 31, 1997.

  A summary of the significant accounting policies of TDC follows:

 USE OF ESTIMATES:

 The preparation of the financial statements in conformity with generally
accepted accounting principles requires management to make estimates and
assumptions that affect the amounts reported in the financial statements and
accompanying notes.  Actual results could differ from those estimates.


                                      F-8
<PAGE>
 
                                               Therapeutic Discovery Corporation
                                                   (a development stage company)
                                                               December 31, 1996

 CASH AND CASH EQUIVALENTS:

 TDC reports all highly liquid debt instruments purchased with a maturity of
three months or less as cash equivalents.  The carrying amount reported on
the balance sheet for cash and cash equivalents approximates their fair value.

 SHORT-TERM INVESTMENTS:

 TDC has classified its entire investment portfolio, including cash
equivalents of approximately $85 million and $177 million at December 31,
1996 and 1995, respectively, as available-for-sale. TDC's investment
portfolio is available for current operations and, therefore, has been
classified as a current asset.  Investments in the available-for-sale
category are carried at fair market value with unrealized losses recorded as
a separate component of stockholders' equity.  At December 31, 1996, net
unrealized losses on available-for-sale securities were approximately $1.2
million.  At December 31, 1995, net unrealized losses on available-for-sale
securities were approximately $0.3 million.  Realized gains and losses for
the years ended December 31, 1996 and 1995 were not material.  The cost of
securities when sold is based upon specific identification.
 
The following is a summary of available-for-sale securities at December 31,
1996:
 
<TABLE>
<CAPTION>
                                               Available-for-Sale Securities
                                      ------------------------------------------------
                                                                             Estimated
                                                  Unrealized   Unrealized      Fair
(in thousands)                          Cost        Gains        Losses        Value
                                      --------    ----------   ----------    ---------
<S>                                   <C>          <C>          <C>           <C>
U.S. Treasury securities
 and obligations of U.S.
 government agencies                  $37,921          $ 8      $  (370)     $37,559
 
Collateralized mortgage
 obligations and asset
 backed securities                     22,340            4         (517)      21,827
 
Corporate securities                   24,478            7         (298)      24,187
                                     --------   ----------   ----------    ---------
                                      $84,739          $19      $(1,185)     $83,573
                                     ========   ==========   ==========    =========
</TABLE>

                                      F-9
<PAGE>
 
                                               Therapeutic Discovery Corporation
                                                   (a development stage company)
                                                               December 31, 1996

 The following is a summary of available-for-sale securities at December 31,
1995:
 
<TABLE>
<CAPTION>
                                                                                                 
                                                      Available-for-Sale Securities
                                             ------------------------------------------------
                                                                                    Estimated  
                                                         Unrealized   Unrealized      Fair       
(in thousands)                                  Cost        Gains       Losses        Value      
                                             ---------   ----------   ----------    ---------  
<S>                                           <C>         <C>          <C>           <C>        
U.S. Treasury securities                                                                       
 and obligations of U.S.                                                                       
 government agencies                          $ 89,526         $288        $(167)    $ 89,647  
                                                                                               
Collateralized mortgage                                                                        
 obligations and asset                                                                         
 backed securities                              39,061           11         (363)      38,709  
                                                                                               
Corporate securities                            47,858           47          (78)      47,827  
                                             ---------   ----------   ----------    ---------  
                                              $176,445         $346        $(608)    $176,183  
                                             =========   ==========   ==========    =========  
</TABLE>
 
 The amortized cost and estimated fair value of debt and marketable
securities at December 31, 1996, by contractual maturity, are shown below.
Expected maturities will differ from contractual maturities because the
issuers of the securities may have the right to prepay obligations without
prepayment penalties.
<TABLE> 
<CAPTION> 
  
                                                           Estimated                                        
                                                              Fair                                          
(in thousands)                                  Cost         Value                                            
                                              ---------    ---------                                       
<S>                                            <C>           <C>                                              
Due in one year or less                        $ 36,938     $ 36,611                                       
Due after one year through                                                                                 
 four years                                      40,814       40,118                                       
Due after four years through                                                                               
 eight years                                      6,987        6,844                                       
                                               --------     --------                                       
                                               $ 84,739     $ 83,573                                       
                                               ========     ========                                       
</TABLE>


                                     F-10
<PAGE>
 
                                               Therapeutic Discovery Corporation
                                                   (a development stage company)
                                                               December 31, 1996

 INVESTMENT RISK:

 TDC invests excess cash in money market and fixed income securities of
companies with strong credit ratings, from a variety of industries, and in
U.S. government obligations.  These securities typically bear minimal credit
risk and TDC has not experienced any losses on its investments to date due to
credit risk.

 ORGANIZATION COSTS:

 Organization costs totaling approximately $3.6 million were incurred in
developing TDC's organizational, financial and contractual structures and are
being amortized over 60 months using the straight line method.

 STOCK BASED COMPENSATION:

 The Company accounts for stock option grants in accordance with APB Opinion
No. 25, ACCOUNTING FOR STOCK ISSUED TO EMPLOYEES.  The Company grants certain
stock options for a fixed number of shares to employees, directors and
consultants with an exercise price below the fair value at the date of grant
and, accordingly, recognizes deferred compensation from the date of the grant.

 PER SHARE INFORMATION:

 Per share information is based on 7,734,524 shares (including Class A and
Class B Common Stock) outstanding for the entire period from inception
(November 1992) to December 31, 1996.  Common equivalent shares are excluded
as their effect is antidilutive.

2.  ARRANGEMENTS WITH ALZA CORPORATION

 TDC was formed by ALZA for the purpose of selecting and developing new
human pharmaceutical products combining ALZA's proprietary drug delivery
technologies with various drug compounds, and commercializing such products,
most likely through licensing to ALZA.  In connection with the dividend
discussed below, ALZA made a $250 million cash contribution to TDC's capital,
which is being used primarily to fund activities under the development
contract described below.


                                     F-11
<PAGE>
 
                                               Therapeutic Discovery Corporation
                                                   (a development stage company)
                                                               December 31, 1996


 In March 1993, ALZA announced a special dividend of units (each, a "Unit")
to ALZA stockholders, each Unit consisting of one share of TDC Class A Common
Stock and one warrant to purchase one-eighth of one share of ALZA Common
Stock at an exercise price of $65 per share.  Holders of record of ALZA
Common Stock on May 28, 1993 received one Unit for every 10 shares of ALZA
Common Stock held, with cash distributed in lieu of fractional Units.  A
total of 7,734,424 Units were distributed to ALZA stockholders on June 11,
1993.  As a result of the distribution, all of the outstanding shares of TDC
Class A Common Stock were distributed to ALZA stockholders.  ALZA continues
to hold all of the outstanding shares of TDC Class B Common Stock.

 In accordance with TDC's Restated Certificate of Incorporation, on June 11,
1996, the Units separated into their component securities--TDC Class A Common
Stock and ALZA warrants.  As a result of the separation, both securities are
listed and trade independently on the Nasdaq Stock Market.  The trading symbol
for the TDC Class A Common Stock is "TDCA".

 ALZA and TDC are parties to a development agreement (the "Development
Contract") pursuant to which ALZA conducts research and development
activities on behalf of TDC.  Under the Development Contract, products have
been proposed by ALZA to TDC for development.  For products approved for
development by TDC, ALZA (and/or other third parties) conducts research and
development activities under approved work plans and cost estimates.  ALZA
has granted to TDC a royalty-free, exclusive, worldwide perpetual license to
use ALZA's proprietary drug delivery technology to develop and commercialize
TDC products.

 For activities under the Development Contract, TDC incurred research and
development expenses of approximately $100.0 million during 1996, as compared
with $68.9 million during 1995, and $31.6 million during 1994.  As
development activities continue during 1997, TDC's research and development
expenses are expected to continue until the funds contributed to TDC by ALZA
in 1993, plus any investment income earned thereon, less organization costs
and administrative expenses (including reasonable reserves for TDC
operations) are utilized.

 ALZA has an option to license any products developed by TDC, on a
country-by-country product-by-product basis.  If ALZA exercises its license
option for any product, ALZA will make the following payments to TDC with
respect to such product:

    (a) if the product is sold by ALZA, royalties of up to a maximum of
  5% of ALZA's net sales of the product determined as follows:  (i) 1%
  of net sales, plus (ii) an additional 0.1% of net sales for each full
  $1 million of development costs of the


                                     F-12
<PAGE>
 
                                               Therapeutic Discovery Corporation
                                                   (a development stage company)
                                                               December 31, 1996

    product paid by TDC; and (b) if the product is sold by a third party,
    sublicensing fees of up to 50% of ALZA's sublicensing revenues with
    respect to the product, determined as follows:  (i) 10% of ALZA's
    sublicensing revenues, plus (ii) an additional 1% of ALZA's
    sublicensing revenues for each full $1 million of development costs of
    the product paid by TDC.

 ALZA has an option, exercisable on a product-by-product basis, to buy out
its royalty obligation to TDC by making a one-time payment that is a multiple
of royalties and sublicensing fees paid in specified periods.  Such option
may be exercised on a country-by-country or worldwide basis.  Since the
beginning of 1997, ALZA has exercised its option to license TDC's
second-generation transdermal testosterone product to follow ALZA's existing
Testoderm-Registered Trademark- product from TDC for 12 European countries,
and TDC's OROS-Registered Trademark- hydromorphone product for the entire world.

 ALZA also has an option, exercisable in ALZA's sole discretion, to
purchase, according to a predetermined formula, all (but not less than all)
of the outstanding shares of TDC Class A Common Stock (the "Purchase
Option").  The Purchase Option is exercisable at any time until December 31,
1999; provided that such date may be extended for successive one year periods
if, as of any June 30 beginning with June 30, 1999, TDC has not used pursuant
to the Development Contract at least 90% of the cash initially contributed to
TDC by ALZA plus interest earned thereon less organization costs, TDC's
administrative expenses (including reasonable reserves for operations), and
the costs of the distribution to ALZA's stockholders.  The Purchase Option
will expire, in any event, on the 60th day after TDC files with the
Securities and Exchange Commission a Form 10-K or Form 10-Q containing a
balance sheet showing less than an aggregate of $5 million in cash and cash
equivalents, short-term investments and long-term investments.

 If the Purchase Option is exercised, the exercise price will be the
greatest of:

  (a) $100 million;

  (b) the greater (i) of 25 times the worldwide royalties and sublicensing
 fees paid by ALZA to TDC during four specified calendar quarters or (ii) 100
 times such royalties and sublicensing fees during a specified calendar
 quarter, in each case, less any amounts previously paid by ALZA to exercise
 a buy-out option with respect to any product;

  (c) the fair-market value of one million shares of ALZA Common Stock, or


                                     F-13
<PAGE>
 
                                               Therapeutic Discovery Corporation
                                                   (a development stage company)
                                                               December 31, 1996

  (d) $325 million less all amounts paid by TDC under the Development
 Contract.

The purchase price may be paid in cash, in ALZA Common Stock, or any
combination of the two, at the option of ALZA.

 Until the expiration of the Purchase Option, ALZA, as the sole holder of
TDC's Class B Common Stock, will be entitled to vote separately as a class
with respect to, and therefore could prevent, any merger or liquidation of
TDC, the sale, lease, exchange, transfer or other disposition of any
substantial asset of TDC, and any amendments to the Restated Certificate of
Incorporation of TDC that would alter the Purchase Option, TDC's
capitalization, or the provisions of the Restated Certificate of
Incorporation concerning TDC's board of directors.

 ALZA performs certain administrative services for TDC under an annually
renewable services agreement which is terminable at the option of TDC on 60
days' notice.  Under this agreement, TDC reimburses ALZA for its
fully-burdened costs.  Expenses incurred by TDC for administrative services
rendered under this agreement were approximately $152,000 in 1996, as
compared with $136,000 in 1995, and $206,000 in 1994.  The expenses incurred
for the period from inception (November 1992) to December 31, 1996 were
approximately $614,000.

 The arrangements between ALZA and TDC are complex and are incorporated in
various agreements between the parties and in TDC's Restated Certificate of
Incorporation.

3.  STOCK OPTIONS

 TDC has a stock option plan under which 500,000 shares of Class A Common
Stock have been reserved for issuance to employees, officers, directors
and consultants.  During the period from inception (November 1992) to
December 31, 1993, options to purchase 341,500 shares were granted.  In the
year ended December 31, 1994, options to purchase 55,000 shares were granted
to consultants.  In the year ended December 31, 1995, options to purchase
2,000 shares were granted and options to purchase 1,500 shares were canceled.
In the year ended December 31, 1996, the options to purchase 2,000 shares
that were granted in 1995 were canceled.  All outstanding options have an
exercise price of $1.00 per share, are exercisable in four equal annual
installments beginning on June 11, 1996, and expire ten years after the date
of grant.  As of December 31, 1996, 395,000 options were outstanding, 98,750
of which were exercisable.  The weighted average remaining contractual life
is 6.61 years for options outstanding at December 31, 1996.


                                     F-14
<PAGE>
 
                                               Therapeutic Discovery Corporation
                                                   (a development stage company)
                                                               December 31, 1996

   STOCK COMPENSATION PLAN

 TDC has elected to follow Accounting Principles Board Opinion No. 25,
"Accounting for Stock Issued to Employees" ("APB 25") and related
Interpretations in accounting for its employee stock options because the
alternative fair value accounting provided for under FASB Statement No. 123,
"Accounting for Stock-Based Compensation" ("FAS 123"), requires use of
option valuation models that were not developed for use in valuing employee
stock options.  The proforma compensation associated with the options granted
in 1995 (none in 1996) is negligible.  TDC has, for financial statement
presentation purposes, recorded deferred compensation expense equal to the
difference, at the date of grant, between the exercise price and the market
value on the date of grant of the Class A Common Stock underlying options
granted during the relevant  periods.  This deferred compensation amount is
being amortized to expense over the vesting period of the options.

4.  INCOME TAXES

 Significant components of TDC's deferred tax assets for federal and state
income taxes for the two years ended December 31, 1996 and, 1995 are as follows:
<TABLE>
<CAPTION>
 
(in thousands)
                                       1996        1995
                                     --------    --------
<S>                                  <C>         <C> 
Net deferred tax assets:
  Capitalized research expenses      $ 64,696    $ 28,337
  Capital loss carryover                1,434       1,454
  SFAS 115 unrealized losses              479         108
  Other                                   (39)        (39)
                                     --------    --------
    Total deferred tax assets          66,570      29,860
    Less:  valuation allowance        (66,570)    (29,860)
                                     --------    --------

Net deferred tax assets              $      -    $      -
                                     ========    ========
</TABLE> 

 Because of the Company's lack of earnings history, the net deferred tax
assets have been fully offset by a valuation allowance.  The valuation
allowance increased by $36,710 in 1996 as compared with 1995 and by $14,719
in 1995 as compared with 1994, and by $14,695 in 1994 as compared with 1993.


                                     F-15

<PAGE>
 
                                                                    EXHIBIT 99.3


               REPORT OF ERNST & YOUNG LLP, INDEPENDENT AUDITORS

The Board of Directors and Stockholders

Therapeutic Discovery Corporation

     We have audited the accompanying balance sheet of Therapeutic Discovery 
Corporation (a development stage company) as of December 31, 1995 and 1994, and 
the related statements of operations, stockholders' equity and cash flows for 
the years ended December 31, 1995 and 1994 and for the periods from inception 
(November 1992) to December 31, 1993 and 1995. 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 in accordance with generally accepted auditing 
standards. Those standards 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. An audit also includes 
assessing the accounting principles used and significant estimates made by 
management, as well as evaluating the overall financial statement presentation. 
We believe that our audits provide a reasonable basis for our opinion.

     In our opinion, the financial statements referred to above present fairly, 
in all material respects, the financial position of Therapeutic Discovery 
Corporation (a development stage company) at December 31, 1995 and 1994 and the 
results of its operations and its cash flows for the years ended December 31, 
1995 and 1994 and for the periods from inception (November 1992) to December 31,
1993 and 1995 in conformity with generally accepted accounting principles.


                                                /s/ Ernst & Young LLP

Palo Alto, California
February 16, 1996

<PAGE>
 
                       THERAPEUTIC DISCOVERY CORPORATION
                         (a development stage company)

                                 Balance Sheet
          (in thousands, except number of shares and per share data)

                                                      
<TABLE> 
<CAPTION> 
                                                              December 31,    December 31,
                                                                 1995             1994
                                                              ------------    ------------
<S>                                                             <C>             <C> 
Assets

Current assets:
   Cash and cash equivalents                                    $ 13,314        $ 20,050
   Short-term investments                                        163,294         193,687
   Interest receivable                                             1,427           2,448
   Prepaid expenses and other current assets                         278             401
                                                                --------        --------
      Total current assets                                       178,313         216,586


Long-term assets:                                                                        
   Employee loans, long-term                                         300             300 
   Prepaid expenses and other long-term assets                     1,094           1,094 
   Organization costs, (net of accumulated amortization)           1,730           2,447 
                                                                --------        --------
Total assets                                                    $181,437        $220,427
                                                                ========        ========


Liabilities and Stockholders' Equity

Current liabilities:
   Payable to ALZA Corporation                                  $ 16,817        $  7,695
   Accounts payable                                                    1               3
   Other current liabilities                                         147             151
                                                                --------        --------
      Total current Liabilities                                   16,965           7,849

Stockholders' equity:
   Class A Common Stock, $.01 par value, 12,000,000
      shares authorized, 7,734,424 issued and outstanding             77              77
   Class B Common Stock, $.01 par value, 100 shares
      authorized, issued and outstanding                               -               -
   Additional paid-in capital                                    251,650         251,648
   Net unrealized losses on available-for-sale securities           (262)        (11,393)
   Deficit accumulated during development stage                  (85,448)        (26,045)
   Deferred compensation                                          (1,545)         (1,709)
                                                                --------        --------

      Total stockholders' equity                                 164,472         212,578
                                                                --------        --------

Total liabilities and stockholders' equity                      $181,437        $220,427
                                                                ========        ========
</TABLE> 

                            See accompanying notes.

                                      F-2
<PAGE>
 
                       THERAPEUTIC DISCOVERY CORPORATION
                         (a development stage company)

                            Statement of Operations
           (in thousand, except number of shares and per share data)


<TABLE> 
<CAPTION> 
                                                                                             Period From           Period From
                                                    Year Ended          Year Ended            Inception             Inception
                                                   December 31,        December 31,       (November 1992) to    (November 1992) to
                                                      1995                 1994            December 31, 1993     December 31, 1995
                                                   ------------        ------------       ------------------    ------------------
<S>                                                 <C>                 <C>                   <C>                  <C> 
Revenues:
   Net interest and investment income              $   11,540          $    8,673             $    5,908           $    26,121

Expenses:
   Research and development                            68,923              31,634                  4,869               105,426
   General and administrative                           2,321               2,700                  1,423                 6,444
                                                   ----------          ----------             ----------           -----------
    Total expenses                                     71,244              34,334                  6,292               111,870
                                                   ----------          ----------             ----------           -----------

Loss before taxes                                     (59,704)            (25,661)                  (384)              (85,749)
                                                   ----------          ----------             ----------           -----------

Income tax                                                301                   -                      -                   301
                                                   ----------          ----------             ----------           -----------

Net loss                                           $  (59,403)         $  (25,661)            $     (384)          $   (85,448)
                                                   ==========          ==========             ==========           ===========

Net loss per common share                          $    (7.68)         $    (3.32)            $     (.05)          
                                                   ==========          ==========             ==========         

Weighted average common shares                      7,734,524           7,734,524              7,734,524
                                                   ==========          ==========             ==========         
</TABLE> 

                            See accompanying notes.

                                      F-3

<PAGE>
 
                       THERAPEUTIC DISCOVERY CORPORATION
                         (a development stage company)
                       Statement of Stockholders' Equity
          (in thousands, except number of shares and per share data)

<TABLE> 
<CAPTION>
                                                                      Deficit                  Unrealized                         
                                                                    Accumulated                 losses on                          
                                     Class A   Class B  Additional   During the                 available-       Total             
                            Common   Common    Common    Paid-in     Development   Deferred      for-sale     Stockholders'        
                            Stock     Stock     Stock    Capital       Stage     Compensation   securities       Equity            
                           -------   -------  --------  ----------  ------------ -------------  -----------   -------------
<S>                        <C>       <C>      <C>        <C>        <C>            <C>           <C>            <C>
Issuance of 100 shares
   of Common Stock for
   $20 per share to ALZA
   Corporation in November $     -  $      -  $      -   $      2   $      -        $      -      $      -       $      2  
   1992                                                                                                                    
                                                                                                                           
Issuance of 7,734,424                                                                                                      
   shares of Class A                                                                                                       
   Common Stock for                                                                                                        
   approximately $32.32                                                                                                    
   per share to ALZA                                                                                                       
   Corporation in June                                                                                                     
   1993, net of issuance                                                                                                   
   costs of $222                 -        77         -    249,699          -               -             -        249,776  
                                                                                                                           
Conversion by ALZA                                                                                                         
   Corporation of 100                                                                                                      
   shares of Common Stock                                                                                                  
   into 100 shares of                                                                                                      
   Class B Common Stock                                                                                                    
   in June 1993                  -         -         -          -          -               -             -              -  
                                                                                                                           
Deferred compensation                                                                                                      
   resulting from grant                                                                                                    
   of options through                                                                                                      
   December 31, 1993             -         -         -      1,686          -          (1,686)            -              -  
                                                                                                                           
Amortization of                                                                                                            
   deferred                                                                                                                
   compensation                  -         -         -          -          -              80             -             80  
                                                                                                                           
Net loss                         -         -         -          -       (384)              -             -           (384) 
                          --------  --------  --------   --------   --------        --------      --------       --------  
Balance,                                                                                                                   
   December 31,                                                                                                            
   1993                          -        77         -    251,387       (384)         (1,606)            -        249,474  
</TABLE> 

                            See accompanying notes

                                      F-4
<PAGE>
 
                       Therapeutic Discovery Corporation
                         (a development stage company)
                       Statement of Stockholders' Equity
          (in thousands, except number of shares and per share data)

<TABLE> 
<CAPTION> 
                                                                              Deficit                    Unrealized                 
                                                                            Accumulated                   losses on
                                         Class A   Class B    Additional    During the                   available-      Total
                                Common    Common    Common     Paid-in      Development     Deferred      for-sale    Stockholders'
                                Stock     Stock     Stock      Capital         Stage      Compensation   securities      Equity
                                ------   -------   -------    ----------    -----------   ------------   ----------   -------------
<S>                             <C>      <C>       <C>        <C>           <C>           <C>            <C>          <C> 
Deferred compensation
   resulting from grant
   of options in the year
   ended December 31, 1994           -         -         -           261              -           (261)           -

Amortization of
   deferred
   compensation                      -         -         -             -              -            158            -             158

Net change in unrealized loss  
   on available-for-sale
   securities                        -         -         -             -              -              -      (11,393)        (11,393)

Net loss                             -         -         -             -        (25,661)              -            -        (25,661)
                                ------   -------   -------    ----------    -----------   ------------   ----------   -------------

Balance,
   December 31,
   1994                              -        77         -       251,648        (26,045)        (1,709)     (11,393)        212,578

Deferred compensation
   resulting from grant
   of options in the year
   ended December 31, 1995           -         -         -             2              -             (2)           -               -

Amortization of
   deferred
   compensation                      -         -         -             -              -            166            -             166

Net change in unrealized
   loss on available-for-sale
   securities                        -         -         -             -              -              -       11,131          11,131

Net loss                             -         -         -             -        (59,403)             -            -         (59,403)
                                ------   -------   -------    ----------    -----------   ------------   ----------   -------------

Balance,
   December 31,
   1995                         $    -   $    77   $     -    $  251,650    $   (85,448)  $     (1,545)  $     (262)  $     164,472
                                ======   =======   =======    ==========    ===========   ============   ==========   =============
</TABLE> 
                            See accompanying notes

                                      F-5
<PAGE>
 
                       THERAPEUTIC DISCOVERY CORPORATION
                         (A DEVELOPMENT STAGE COMPANY)

                     CONSOLIDATED STATEMENT OF CASH FLOWS
              INCREASES (DECREASES) IN CASH AND CASH EQUIVALENTS
                                (IN THOUSANDS)
<TABLE> 
<CAPTION> 
                                                                                                Period From          Period from
                                                              Year Ended      Year Ended         Inception            Inception
                                                             December 31,    December 31,    (November 1992) to   (November 1992) to
                                                                 1995            1994        December 31, 1993    December 30, 1995
                                                             ------------    ------------    ------------------   -----------------

CASH FLOWS FROM OPERATING ACTIVITIES:
<S>                                                          <C>             <C>             <C>                  <C> 
   Net loss                                                  $    (59,403)   $    (25,661)   $             (384)  $         (85,448)
   Adjustments to reconcile net loss
      to net cash used in operating activities;
      Amortization of organization costs                              716             716                   418               1,850 
      Amortization of deferred compensation                           164             158                    80                 402 
      (Increase) decrease in assets:                                                                                
          Interest receivable                                       1,021             127                (2,575)             (1,427)
          Other receivable                                              -            (252)                    -                (252)
          Organization costs                                            -               -                (3,581)             (3,581)
          Prepaid expenses                                            123             130                (1,373)             (1,120)
      Increase (decrease) in liabilities;                                                                           
          Payable to ALZA Corporation                               9,122           5,390                 2,305              16,817 
          Accounts payable                                             (2)            (47)                   50                   1 
          Other current liabilities                                    (4)             52                    99                 147 
                                                             ------------    ------------    ------------------   -----------------
             Total adjustments                                     11,140           6,274                (4,577)             12,837 
                                                             ------------    ------------    ------------------   -----------------
                Net cash used in operating activities             (48,263)        (19,387)               (4,961)            (72,611)


CASH FLOWS FROM INVESTING ACTIVITIES:

   Investments in available-for-sale securities                   (42,863)       (294,121)           (1,000,416)         (1,337,400)
   Sale of available-for-sale securities                           81,349         194,134               212,668             488,151 
   Maturities of available-for-sale securities                      3,041         137,918               544,737             685,696 
   Employee loans, long-term                                            -               -                  (300)               (300)
                                                             ------------    ------------    ------------------   -----------------
                Net cash provided by (used in) investing
                   activities                                      41,527          37,931              (243,311)           (163,853)


CASH FLOWS FROM FINANCING ACTIVITIES:

   Issuance of Class B Common Stock                                     -               -                     2                   2 
   Issuance of Class A Common Stock, net of                                                                                         
      issuance costs                                                    -               -               249,776             249,776
                                                             ------------    ------------    ------------------   -----------------
                 Net cash provided by financing activities              -               -               249,778             249,778 
                                                             ------------    ------------    ------------------   -----------------

Net increase (decrease) in cash and cash equivalents               (6,736)         18,544                 1,506              13,314 

Cash and cash equivalents at beginning of period                   20,050           1,506                     -                   - 
                                                             ------------    ------------    ------------------   -----------------

Cash and cash equivalents at end of period                   $     13,314    $     20,050    $            1,506   $          13,314 
                                                             ============    ============    ==================   =================
</TABLE> 

                            See accompanying notes.

                                      F-6

<PAGE>
 
                                               Therapeutic Discovery Corporation
                                                   (a development stage company)
                                                               December 31, 1995

                         Notes to Financial Statements
                         -----------------------------

1.   ORGANIZATION AND SIGNIFICANT ACCOUNTING POLICIES
     ------------------------------------------------

     Therapeutic Discovery Corporation ("TDC") was incorporated in Delaware on 
November 12, 1992 and commenced operations on June 11, 1993. Since it commenced 
operations, TDC has been engaged in selecting and developing new human 
pharmaceutical products combining the proprietary drug delivery systems of ALZA 
Corporation ("ALZA") with various drug compounds. TDC's principal activities 
consist of research and development activities under its agreement with ALZA. 
Accordingly, TDC is considered a development stage company.

     During the period from TDC's inception (November 1992) to December 31, 
1992, TDC's operations were limited to capital formation and organization 
activities. During that period, TDC earned no revenues and incurred immaterial 
operating costs and expenses. Due to the insignificance of these amounts to the 
financial statements taken as a whole, the results of operations for this period
are included in the results of operations for the period ended December 31, 
1993.

     A summary of the significant accounting policies of TDC follows:

     USE OF ESTIMATES:

     The preparation of the financial statements in conformity with generally 
accepted accounting principles requires management to make estimates and 
assumptions that affect the amounts reported in the financial statements and 
accompanying notes. Actual results could differ from those estimates.

     CASH AND CASH EQUIVALENTS:

     TDC reports all highly liquid debt instruments purchased with a maturity of
three months or less as cash equivalents. The carrying amount reported on the 
balance sheet for cash and cash equivalents approximates their fair value.
    
                                      F-7
<PAGE>
 
                                               Therapeutic Discovery Corporation
                                                   (a development stage company)
                                                                December 31,1995

     SHORT-TERM INVESTMENTS:

     TDC has classified its entire investment portfolio, including cash
equivalents of $177 million and $214 million at December 31, 1995 and 1994,
respectively, as available-for-sale. Although TDC may not dispose of all of the
securities in its investment portfolio within one year, TDC's investment
portfolio is available for current operations and, therefore, has been
classified as a current asset. Investments in the available-for-sale category
are carried at fair market value with unrealized losses recorded as a separate
component of stockholders' equity. At December 31, 1995, net unrealized losses
on available-for-sale securities were approximately $.3 million. At December 31,
1994, net unrealized losses on available-for-sale securities were approximately
$11.4 million. Net interest and investment income for the year ended December
31, 1994 includes a loss of $3.9 million on securities that were sold in 1994 to
reposition TDC's portfolio to take advantage of higher interest rates. Realized
gains for the years ended December 31, 1995 and 1994 and realized losses for the
year ended December 31, 1995 were not material. The cost of securities when sold
is based upon specific identification.

     The following is a summary of available-for-sale securities at December 31,
1995:

<TABLE> 
<CAPTION> 
                                            Available-for-Sale Securities
                                 -----------------------------------------------

                                                                      Estimated
                                           Unrealized   Unrealized       Fair
(in thousands)                   Cost        Gains        Losses        Value
                                 ----      ----------   ----------    ---------
<S>                              <C>       <C>          <C>           <C> 
U.S. Treasury securities
  and obligations of U.S.
  government agencies            $ 89,526   $     288   $     (167)   $  89,647

Collateralized mortgage
  obligations and asset
  backed securities                39,061          11         (363)      38,709

Corporate securities               47,858          47          (78)      47,827
                                 --------   ---------   ----------    ---------
                                 $176,445   $     346   $     (608)   $ 176,183
                                 ========   =========   ==========    =========
</TABLE> 

                                      F-8
<PAGE>
 
                                               Therapeutic Discovery Corporation
                                                   (a development stage company)
                                                               December 31, 1995

 The following is a summary of available-for-sale securities at December 31, 
1994:

<TABLE> 
<CAPTION> 
                                     Available-for-Sale Securities
                           --------------------------------------------------

                                                                       Estimated
                                           Unrealized    Unrealized       Fair
(in thousands)                Cost           Gains         Losses        Value
                              ----         ----------    ----------    ---------
<S>                           <C>          <C>           <C>           <C> 
U.S. Treasury securities
  and obligations of U.S.
  government agencies         $109,864     $        0    $  (6,586)    $ 103,278

Collateralized mortgage
  obligations and asset
  backed securities             44,410              0       (2,552)       41,858

Corporate securities            70,602              0       (2,255)       68,347
                              --------     ----------    ---------     ---------
                              $224,876     $        0    $ (11,393)    $ 213,483
                              ========     ==========    =========     =========
</TABLE> 

     The amortized cost and estimated fair value of debt and marketable 
securities at December 31, 1995, by contractual maturity, are shown below.  
Expected maturities will differ from contractual maturities because the issuers 
of the securities may have the right to prepay obligations without prepayment 
penalties.

<TABLE> 
<CAPTION> 

                                                    Estimated
                                                      Fair
(in thousands)                       Cost             Value
                                   --------         ---------
<S>                                <C>               <C> 
Due in one year or less            $ 75,570          $ 75,649
Due after one year through
  four years                         89,990            89,515
Due after four years through
  eight years                        10,885            11,019
                                   --------         ---------
                                   $176,445          $176,183
                                   ========         =========
</TABLE> 
     The difference between the total estimated fair value as given in the above
tables and the total of cash and cash equivalents and short-term investments on 
the balance sheet is due to the inclusion of TDC's cash in bank of $0.4 million 
in cash and cash equivalents on the balance sheet.

                                      F-9
<PAGE>
 
                                               Therapeutic Discovery Corporation
                                                   (a development stage company)
                                                               December 31, 1995

     INVESTMENT RISK:

     TDC invests excess cash in money market and fixed income securities of 
companies with strong credit ratings, from a variety of industries, and in U.S. 
government obligations. These securities typically bear minimal credit risk and 
TDC has not experienced any losses on its investments to date due to credit 
risk.

     ORGANIZATION COSTS:

     Organization costs totaling approximately $3.6 million were incurred in 
developing TDC's organizational, financial and contractual structures and are 
being amortized over 60 months using the straight line method.

     STOCK BASED COMPENSATION:

     The Company accounts for stock option grants in accordance with APB Opinion
No. 25, Accounting for Stock Issued to Employees. The Company grants certain
stock options for a fixed number of shares to employees, directors and
consultants with an exercise price below the fair value at the date of grant
and, accordingly, recognizes deferred compensation from the date of the grant.

     PER SHARE INFORMATION:

     Per share information is based on 7,734,524 shares (including Class A and 
Class B Common Stock) outstanding for the entire period from inception (November
1992) to December 31, 1995. Common equivalent shares are excluded as their 
effect is antidilutive.

2.   ARRANGEMENTS WITH ALZA CORPORATION
     ----------------------------------

     TDC was formed by ALZA for the purpose of selecting and developing new
human pharmaceutical products combining ALZA's proprietary drug delivery
technologies with various drug compounds, and commercializing such products,
most likely through licensing to ALZA. In connection with the dividend
discussed below, ALZA made a $250 million cash contribution to TDC's capital,
which is being used primarily to fund activities under the development
contract described below.

                                     F-10 
     
<PAGE>
 
                                               Therapeutic Discovery Corporation
                                                   (a development stage company)
                                                               December 31, 1995


   In March 1993, ALZA announced a special dividend of units (each, a "Unit") to
ALZA stockholders, each Unit consisting of one share of TDC Class A Common Stock
and one warrant to purchase one-eighth of one share of ALZA Common Stock at an 
exercise price of $65 per share. Holders of record of ALZA Common Stock on May
28, 1993 received one Unit for every 10 shares of ALZA Common Stock held, with
cash distributed in lieu of fractional Units. A total of 7,734,424 Units were
distributed to ALZA stockholders on June 11, 1993. As a result of the
distribution, all of the outstanding shares of TDC Class A Common Stock were
distributed to ALZA stockholders. ALZA continues to hold all of the outstanding
shares of TDC Class B Common Stock.

   The Units trade on the Nasdaq Stock Market (under the symbol TDCAZ) and will 
trade only as Units until the earlier of June 11, 1996 or the date on which 
ALZA exercises the Purchase Option (as defined below)(the "Separation Date"). 
On and after the Separation Date, the ALZA warrants and the TDC Class A Common 
Stock will trade separately.

   ALZA and TDC are parties to a development agreement (the "Development 
Contract") pursuant to which ALZA conducts research and development activities 
on behalf of TDC. Under the Development Contract, products are proposed by ALZA 
to TDC for development. For products approved for development by TDC, ALZA 
(and/or other third parties) will conduct research and development activities 
under approved work plans and cost estimates. ALZA has granted to TDC a 
royalty-free, exclusive worldwide perpetual license to use ALZA's proprietary 
drug delivery technology to develop and commercialize TDC products.

   For activities under the Development Contract, TDC incurred research and 
development expenses of approximately $68.9 million during 1995 as compared with
$31.6 million during 1994 and $4.9 million for the period from inception 
(November 1992) to December 31, 1993. As additional products are accepted by TDC
for development, and development activities increase, TDC's research and 
development expenses are expected to continue at current levels or increase in 
future years.

   ALZA has an option to license any products developed by TDC, on a country-by-
country product-by-product basis. If ALZA exercises its license option for any 
product, ALZA will make the following payments to TDC with respect to such 
product;

        (a) if the product is sold by ALZA, royalties of up to a maximum of 5% 
   of ALZA's net sales of the product determined as follows: (i) 1% of net
   sales, plus (ii) an additional 0.1% of net sales for each full $1 million of
   development costs of the product paid by TDC; and




                                     F-11
<PAGE>
 
                                               Therapeutic Discovery Corporation
                                                   (a development stage company)
                                                               December 31, 1995



                
   (b) if the product is sold by a third party, sublicensing fees of up to 50%
   of ALZA's sublicensing revenues with respect to the product, determined as
   follows: (i) 10% of ALZA's sublicensing revenues, plus (ii) an additional 1%
   of ALZA's sublicensing revenues for each full $1 million of development costs
   of the product paid by TDC.

   ALZA has an option, exercisable on a product-by-product basis, to buy out 
its royalty obligation to TDC by making a one-time payment that is a multiple of
royalties and sublicensing fees paid in specified periods. Such option may be 
exercised on a country-by-country or worldwide basis.

   ALZA also has an option, exercisable in ALZA's sole discretion, to purchase
according to a predetermined formula, all (but not less than all) of the
outstanding shares of TDC Class A Common Stock (the "Purchase Option"). The
Purchase Option is exercisable at any time until December 31, 1999; provided
that such date may be extended for successive one year periods if, as of any
June 30 beginning with June 30, 1999, TDC has not paid pursuant to the
Development Contract at least 90% of the cash initially contributed to TDC by
ALZA plus interest earned thereon less organization costs, TDC's administrative
expenses, and the costs of the distribution to ALZA's stockholders. The Purchase
Option will expire, in any event, on the 60th day after TDC files with the
Securities and Exchange Commission a Form 10-K or Form 10-Q containing a balance
sheet showing less than an aggregate of $5 million in cash and cash equivalents,
short-term investments and long-term investments.

  If the Purchase Option is exercised, the exercise price will be the greatest 
of:

   (a) the greater (i) of 25 times the worldwide royalties and sublicensing fees
   and sublicensing fees paid by ALZA to TDC during four specified calendar
   quarters or (ii) 100 times such royalties and sublicensing fees during a
   specified calendar quarter, in each case, less any amounts previously paid by
   ALZA to exercise a buy-out option with respect to any product:

   (b) the fair-market value of one million shares of ALZA Common Stock;

   (c) $325 million less all amounts paid by TDC under the Development Contract:
or
   (d) $100 million.

The purchase price may be paid in cash, in ALZA Common Stock, or any combination
of the two, at the option of ALZA.

                                     F-12



<PAGE>
 
                                               Therapeutic Discovery Corporation
                                                   (a development stage company)
                                                               December 31, 1995

     Until the expiration of the Purchase Option, ALZA, as the sole holder of 
TDC's Class B Common Stock, will be entitled to vote separately as a class with 
respect to, and therefore could prevent, any merger or liquidation of TDC, the 
sale, lease, exchange, transfer or other disposition of any substantial asset of
TDC, and any amendments to the Restated Certificate of Incorporation of TDC that
would alter the Purchase Option, TDC's capitalization, or the provisions of the 
Restated Certificate of Incorporation concerning TDC's board of directors.

     ALZA performs certain administrative services for TDC under an annually 
renewable services agreement which is terminable at the option of TDC on 60 
days' notice. Under this agreement, TDC reimburses ALZA for its fully-burdened 
costs. Expenses incurred by TDC for administrative services rendered under this 
agreement were approximately $136,000 in 1995, as compared with $206,000 in 1994
and $120,000 for the period from inception (November 1992) to December 31, 1993.
The expenses incurred for the period from inception (November 1992) to December,
1995 were approximately $462,000.

     The arrangement between ALZA and TDC are complex and are incorporated in 
various agreements between the parties and in TDC's Restated Certificate of 
Incorporation.

3.   STOCK OPTIONS
     -------------
     TDC has a stock option plan under which 500,000 shares of Class A Common
Stock have been reserved for issuance to employees, officers and directors and 
consultants. During the period from inception (November 1992) to December 31, 
1993, options to purchase 341,500 shares were granted. In the year ended 
December 31, 1994, options to purchase 55,000 shares were granted to 
consultants. In the year ended December 31, 1995, options to purchase 2,000 
shares were granted and options to purchase 1,500 shares were cancelled. All 
options granted on or prior to December 31, 1994 have an exercise price of $1.00
per share. Options granted in 1995 have an exercise price of not less than 
eighty-five percent (85%) of the fair market value of the stock on the date of 
grant. All options granted to date are exercisable in four equal annual 
installments beginning on June 11, 1996 and expire ten years after the date of 
grant.

     TDC has, for financial statement presentation purposes, recorded deferred
compensation expense equal to the difference, at the date of grant, between the 
exercise price and the market value on the date of grant of the Class A Common 
Stock underlying options granted during the periods ended December 31, 1995 and 
December 31, 1994. The TDC Class A Common Stock is currently traded as part of

                                     F-13 

 











 


   
<PAGE>
 

                                               Therapeutic Discovery Corporation
                                                   (a development stage company)
                                                               December 31, 1995


Units, each Unit consisting of one share of TDC Class A Common Stock and one
warrant to purchase one-eighth of one share of ALZA Common Stock at an exercise
price of $65 per share. For purposes of determining the value of unexercised
options, the average of the high and low sales prices per Unit on the applicable
grant date was determined to be the value of TDC Class A Common Stock and no
value was attributed to the ALZA warrant. This deferred compensation amount is
being amortized to expense over the vesting period of the options. The value of
a Unit is not necessarily indicative of the future performance of the TDC Class
A Common Stock once such stock begins to trade separately from the ALZA
warrants.

4.  INCOME TAXES
    ------------        

    Significant components of TDC's deferred tax assets for federal and state
income taxes for the two years ended December 31 are as follows:

<TABLE> 
<CAPTION> 
(in thousands)
                                                 1995           1994
                                                 ----           ----
<S>                                           <C>            <C> 
Net deferred tax assets:
    Capitalized research expenses              $ 28,337       $ 8,840
    Capital loss carryover                        1,454         1,559
    SFAS 115 unrealized losses                      108         4,676
    Other                                           (39)           66
                                               --------       -------
      Total deferred tax assets                  29,860        15,141 
      Less: Valuation allowance                 (29,860)      (15,141)
                                               --------       ------- 
Net deferred tax assets                        $      -       $     -
                                               --------       -------
</TABLE> 
   Because of the Company's lack of earnings history, the net deferred tax
assets have been fully offset by a valuation allowance. The valuation allowance
increased by $14,719 in 1995 as compared with 1994 and by $14,695 in 1994 as
compared with 1993.

                                     F-14 




 


   



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