SHEFFIELD PHARMACEUTICALS INC
8-K, 1998-07-16
PHARMACEUTICAL PREPARATIONS
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                       SECURITIES AND EXCHANGE COMMISSION

                             Washington, D.C. 20549


                                    FORM 8-K


                                 CURRENT REPORT

                         PURSUANT TO SECTION 13 OR 15(d)
                     OF THE SECURITIES EXCHANGE ACT OF 1934



Date of Report (Date of earliest event reported): JUNE 30, 1998



                         SHEFFIELD PHARMACEUTICALS, INC.
- --------------------------------------------------------------------------------
             (Exact name of Registrant as specified in its charter)



         Delaware                      1-12584                13-3808303
- --------------------------------------------------------------------------------
(State or other jurisdiction        (Commission             (I.R.S. Employer
 of incorporation)                  File Number)             Identification
                                                             Number)




425 SOUTH WOODSMILL ROAD, ST. LOUIS, MISSOURI                63017
- --------------------------------------------------------------------------------
(Address of Principal executive offices)                    (Zip Code)


                                 (314) 579-9899
- --------------------------------------------------------------------------------
               Registrant's telephone number, including area code



- --------------------------------------------------------------------------------
          (Former Name or Former Address; if Changed Since Last Report)


<PAGE>
ITEM 5.           OTHER EVENTS.

                  On  June  30,  1998,  Sheffield  Pharmaceuticals,   Inc.  (the
"Company")   consummated   a  license  and  financing   transaction   with  Elan
International  Services, Ltd. ("Elan") (an affiliate of Elan Corporation plc, an
Irish pharmaceutical company) in accordance with the terms of the binding letter
of intent  dated  June 3, 1998 (the  "Letter  of  Intent").  A copy of the press
release disclosing  information  relating to the consummation of the transaction
and certain  related  matters is attached as an exhibit to this  report,  and is
incorporated herein by reference.

                  As part of the  transaction,  the Company has created a wholly
owned subsidiary in Bermuda called Systemic Pulmonary Delivery,  Ltd ("SPD") and
entered  into several  agreements  with Elan,  including a  Securities  Purchase
Agreement dated June 30, 1998 (the "Purchase Agreement") and a Joint Development
and Operating Agreement dated June 30, 1998 (the "Operating  Agreement").  Elan,
the Company and SPD have also licensed  certain of their  intellectual  property
rights  relating  to  pulmonary  drug  delivery   systems  pursuant  to  license
agreements.  Copies of the Purchase  Agreement,  the Operating Agreement and the
license  agreements are attached hereto as exhibits and are incorporated  herein
by reference.


ITEM 7.           FINANCIAL STATEMENTS, PRO FORMA FINANCIAL INFORMATION
                  AND EXHIBITS.

                  (c) EXHIBITS

                  (10.1)            Securities Purchase  Agreement,  dated as of
                                    June  30,  1998,  by and  between  Sheffield
                                    Pharmaceuticals, Inc. and Elan International
                                    Services,    Ltd.,    which   includes   the
                                    Certificate  of  Designations  of  Series  C
                                    Convertible  Preferred  Stock as  Exhibit B.
                                    The Company agrees to furnish the disclosure
                                    schedules as well as Exhibits A and C, which
                                    have been omitted  from this filing,  to the
                                    Commission  upon  request  (portions of this
                                    exhibit   are   omitted   and   were   filed
                                    separately  with the Securities and Exchange
                                    Commission   pursuant   to   the   Company's
                                    application     requesting      confidential
                                    treatment in  accordance  with Rule 24b-2 as
                                    promulgated  under the  Securities  Exchange
                                    Act of 1934, as amended).

                  (10.2)            Systemic  Pulmonary  Delivery,   Ltd.  Joint
                                    Development and Operating Agreement dated as
                                    of June 30,  1998 among  Systemic  Pulmonary
                                    Delivery,  Ltd., Sheffield  Pharmaceuticals,
                                    Inc. and Elan International  Services,  Ltd.
                                    (portions  of this  exhibit  are omitted and
                                    were filed  separately  with the  Securities
                                    and  Exchange  Commission  pursuant  to  the
                                    Company's       application       requesting
                                    confidential  treatment in  accordance  with
                                    Rule   24b-2  as   promulgated   under   the
                                    Securities   Exchange   Act  of   1934,   as
                                    amended).

                  (10.3)            License and Development Agreement dated June
                                    30, 1998 between Sheffield  Pharmaceuticals,
                                    Inc. and Systemic Pulmonary  Delivery,  Ltd.
                                    and Elan Corporation, plc. (portions of this
                                    exhibit

                                       -2-

<PAGE>

                                    are omitted and were filed  separately  with
                                    the  Securities   and  Exchange   Commission
                                    pursuant   to  the   Company's   application
                                    requesting    confidential    treatment   in
                                    accordance  with Rule  24b-2 as  promulgated
                                    under the  Securities  Exchange Act of 1934,
                                    as amended).

                  (10.4)            License and Development Agreement dated June
                                    30,   1998   between   Systemic    Pulmonary
                                    Delivery,       Ltd.      and      Sheffield
                                    Pharmaceuticals,  Inc. and Elan Corporation,
                                    plc.  (portions  of this exhibit are omitted
                                    and   were   filed   separately   with   the
                                    Securities and Exchange  Commission pursuant
                                    to  the  Company's  application   requesting
                                    confidential  treatment in  accordance  with
                                    Rule   24b-2  as   promulgated   under   the
                                    Securities   Exchange   Act  of   1934,   as
                                    amended).

                  (10.5)            License and Development Agreement dated June
                                    30, 1998 between Elan  Corporation,  plc and
                                    Systemic   Pulmonary   Delivery,   Ltd.  and
                                    Sheffield Pharmaceuticals, Inc. (portions of
                                    this  exhibit  are  omitted  and were  filed
                                    separately  with the Securities and Exchange
                                    Commission   pursuant   to   the   Company's
                                    application     requesting      confidential
                                    treatment in  accordance  with Rule 24b-2 as
                                    promulgated  under the  Securities  Exchange
                                    Act of 1934, as amended).

                  (99.1)            Press Release of Sheffield Pharmaceuticals,
                                    Inc. dated July 1, 1998.


                                       -3-

<PAGE>
                                   SIGNATURES


         Pursuant to the  requirements  of the Securities  Exchange Act of 1934,
the  registrant  has duly  caused  this report to be signed on its behalf by the
undersigned hereunto duly authorized.



                                                SHEFFIELD PHARMACEUTICALS INC.


Date: July 16, 1998                             By:/s/ Judy Roeske Bullock
                                                   -----------------------------
                                                   Judy Roeske Bullock
                                                   Vice President and Chief
                                                      Financial Officer


                                    CERTAIN  PORTIONS HAVE BEEN OMITTED BASED ON
                                    A  REQUEST   FOR   CONFIDENTIAL   TREATMENT;
                                    OMITTED  PORTIONS FILED  SEPARATELY WITH THE
                                    SECURITIES AND EXCHANGE COMMISSION

         SECURITIES  PURCHASE  AGREEMENT dated as of June 30, 1998, between ELAN
INTERNATIONAL  SERVICES,  LTD.,  a Bermuda  corporation  ("EIS),  and  SHEFFIELD
PHARMACEUTICALS, INC., a Delaware corporation (the "Company").

                                R E C I T A L S:

         A. The  Company  desires to issue and sell to EIS,  and EIS  desires to
purchase  from the  Company,  as  provided  herein (i)  4,571,428  shares of the
Company's common stock, par value $ .01 per share (the "Common Stock"), and (ii)
a warrant to acquire  990,000 shares  (subject to adjustment) of Common Stock at
an exercise price of $2.00 per share,  in the form attached  hereto as EXHIBIT A
(the "Warrant"), for aggregate consideration of $6,000,000.

         B. The  Company  desires to issue and sell to EIS,  and EIS  desires to
purchase from the Company, all of the shares of a Series C Convertible Preferred
Stock (the  "Series C  Preferred")  which shall be issued to EIS pursuant to the
Certificate  of  Designations  in the form  attached  hereto  as  EXHIBIT B (the
"Certificate of Designations"),  for aggregate consideration of $11,500,000 (the
"Original Issue Price").

         C.  The  Company  may,  in  its  discretion,  issue  a  new  series  of
convertible  indebtedness,  evidenced by a promissory  note in the form attached
hereto as EXHIBIT C (the "Convertible Note"; together with the Common Stock, the
Warrant,  and the Series C Preferred  Stock, the  "Securities"),  and EIS hereby
agrees to make purchases of the  Convertible  Note in accordance  with the terms
and conditions contained herein, in the event that such debt shall be issued.

         D. The Company has previously  caused to be formed  Systemic  Pulmonary
Delivery,  Ltd., a Bermuda corporation ("Newco"), and pursuant to the terms of a
subscription agreement (the "Newco Subscription Agreement") has acquired 100% of
the issued and outstanding  shares of the common stock of Newco;  and, as of the
date hereof,  Newco has entered into a license  agreement with ELAN CORPORATION,
PLC ("Elan"; the "Elan License Agreement"),  and two license agreements with the
Company (respectively,  the "Sheffield License Agreement" and the "Newco License
Agreement";   collectively  with  the  Elan  License  Agreement,   the  "License
Agreements")  for  the  purpose  of  developing  and  commercializing   products
incorporating, INTER ALIA, the Enhancing Technology, the UPDASTM Technology, the
Sheffield Technology and the ADDS Technology (as those terms are defined in each
of the  License  Agreements)  relating  to the  Systemic  Pulmonary  and Topical
Pulmonary Fields (as those terms are defined in each of the license agreements).

<PAGE>
         E. The parties  intend,  as provided  herein,  that  $15,500,000 of the
proceeds  of the  issuance  of the sale of the  Common  Stock  and the  Series C
Preferred  shall be applied by the Company solely to fund the Company's  initial
investment in Newco and subsequent  development  funding  required by Newco,  as
provided  herein and as set forth in the Newco joint  development  and operating
agreement dated as of the date hereof by and between Newco,  EIS and the Company
(the  "Development  Agreement"),  and that  $2,000,000 of such proceeds shall be
retained by the Company as working capital.

         F. The Company and EIS are executing and  delivering on the date hereof
a Registration  Rights  Agreement in the form attached  hereto as EXHIBIT D (the
"Registration Rights Agreement";  together with this Agreement,  the Securities,
the  Certificate  of  Designations,  the  Development  Agreement  and each other
document  or  instrument   executed  and   delivered  in  connection   with  the
transactions contemplated hereby, the "Transaction Documents") in respect of the
initial  purchase of Common Stock and the Common Stock underlying the Securities
and any other  Common  Stock that may at any time be acquired or owned by EIS or
its affiliates.


                               A G R E E M E N T:

The parties agree as follows:

         SECTION  1.  CLOSINGS.   (a)  TIME  AND  PLACE.   The  closing  of  the
transactions  contemplated hereby (the "Closing") shall occur on the date hereof
(the "Closing Date"), at such place as the parties may agree.

         (b) ISSUANCE OF SECURITIES. At the Closing, (x) the Company shall issue
and sell to EIS, and EIS shall purchase from the Company (i) 4,571,428 shares of
Common Stock (the "Initial Common Stock") and (ii) the Warrant, for an aggregate
purchase  price of  $6,000,000,  and (y) 11,500 shares of Series C Preferred for
consideration of $11,500,000.

         (c) DELIVERY.  At the Closing, EIS shall pay the purchase price for the
Initial Common Stock, the Warrant and the Series C Preferred by wire transfer to
an account or accounts  designated  by the Company and the parties  hereto shall
execute  and  deliver  to  each  other,  as  applicable:  (i) a  certificate  or
certificates for the shares of the Initial Common Stock; (ii) the Warrant; (iii)
a certificate  or  certificates  for the shares of the Series C Preferred;  (iv)
certificates as to the incumbency of the officers executing this Agreement;  and
(vi) each of the other documents or instruments executed in connection herewith.
In addition,  at the Closing,  the Company shall cause to be delivered to EIS an
opinion of counsel in form attached hereto as EXHIBIT E.

         (d)  ADDITIONAL  CLOSINGS.  The Company  shall be entitled from time to
time,  subject to the conditions  herein, to require EIS to purchase all or part
of the Convertible Note in accordance with Section 6 hereof.

                                       2
<PAGE>
         (e) EXEMPTION FROM REGISTRATION. The Securities will be issued under an
exemption or exemptions from  registration  under the Securities Act of 1933, as
amended;  accordingly, the certificates evidencing the Initial Common Stock, and
any shares of Common Stock  issuable upon the exercise or exchange of any of the
Securities shall, upon issuance, contain the following legend:

                  THE  SECURITIES  REPRESENTED  HEREBY HAVE NOT BEEN  REGISTERED
                  UNDER  THE  SECURITIES  ACT OF  1933  AND MAY  NOT  UNDER  ANY
                  CIRCUMSTANCES BE TRANSFERRED WITHOUT AN EFFECTIVE REGISTRATION
                  STATEMENT FOR SUCH SECURITIES UNDER THE SECURITIES ACT OF 1933
                  AND ANY  APPLICABLE  STATE  SECURITIES  LAWS OR AN  OPINION OF
                  COUNSEL  SATISFACTORY TO THE CORPORATION THAT  REGISTRATION IS
                  NOT REQUIRED  UNDER SUCH ACT OR  APPLICABLE  STATE  SECURITIES
                  LAWS.

         (f) REGISTRATION RIGHTS AGREEMENT. On the date hereof, the Company, and
EIS are  each  executing  and  delivering  the  Registration  Rights  Agreement,
covering the resale by EIS of the Initial  Common Stock  issuable  hereunder and
any Common Stock  issuable upon  conversion,  exercise or exchange of any of the
Securities.

         SECTION  2.   REPRESENTATIONS  AND  WARRANTIES  OF  THE  COMPANY.   (a)
ORGANIZATION.  The  Company  is duly  organized,  validly  existing  and in good
standing under the laws of the State of Delaware and has all requisite corporate
power and authority to own and lease its properties, to carry on its business as
presently  conducted  and as  proposed to be  conducted  and to  consummate  the
transactions  contemplated hereby. The Company is qualified and in good standing
to do business in jurisdictions set forth on SCHEDULE 2(A), which constitute all
of the  jurisdictions  in which the  nature  of the  business  conducted  or the
property owned by it requires such qualification, except where the failure to so
qualify would not have a material  adverse  effect on the  business,  prospects,
properties  or condition  (financial  or  otherwise) of the Company (a "Material
Adverse Effect").

         (b)  CAPITALIZATION.  (i) The  authorized  capital stock of the Company
consists of (i) 50,000,000 and shares of Common Stock,  par value $.01 per share
and (ii) 3,000,000  shares of Preferred  Stock,  par value $.01 per share. As of
June 25, 1998, 22,282,109 shares of Common Stock were issued and outstanding and
1,250 shares of Preferred Stock were issued and outstanding.

         (ii) Except as listed in SCHEDULE  2(B), as of June 15, 1998 there were
no  options,  warrants or other  rights  outstanding  to  purchase or  otherwise
acquire,  or any securities  convertible  into, any of the Company's  authorized
capital  stock.  Other than as set forth in this


                                       3
<PAGE>

Agreement  and  as  described  in  SCHEDULE  2(B),   there  are  no  agreements,
arrangements or understandings concerning the voting, acquisition or disposition
of any of the Company's  outstanding  securities to which the Company is a party
or of which it is otherwise aware, and, other than as set forth in SCHEDULE 2(B)
or in the Registration Rights Agreement, there are no agreements to register any
of the Company's  outstanding  securities under the U.S. federal securities acts
relating  to  securities  that  have  not  already  been  registered  under  the
Securities Act of 1933 as amended.

         (iii) All of the  outstanding  shares of capital  stock of the  Company
have been  issued in  accordance  with  applicable  state and  federal  laws and
regulations governing the sale and purchase of securities, all of such shares of
have duly and validly issued and are fully paid and non-assessable,  and none of
such shares carries preemptive or similar rights.

         (c)  AUTHORIZATION  OF  TRANSACTION  DOCUMENTS.  The  Company  has full
corporate  power and authority to execute and deliver this Agreement and each of
the other Transaction  Documents,  and to perform its obligations  hereunder and
thereunder.  The  execution,  delivery  and  performance  by the  Company of the
Transaction  Documents  (including the issuance and sale of the Securities) have
been  authorized  by all  requisite  corporate  actions by the Company;  and the
Transaction Documents,  including the issuance and sale of the Securities,  have
been duly  executed  and  delivered  by the  Company  are the valid and  binding
obligations of the Company,  enforceable  against the Company in accordance with
their respective terms.

         (d) NO  VIOLATION.  The  execution,  delivery  and  performance  by the
Company of the  Transaction  Documents,  including  the issuance and sale of the
Securities, and compliance with the provisions thereof, will not (i) violate any
provision of  applicable  law,  statute,  rule or  regulation  applicable to the
Company or any ruling, writ, injunction, order, judgment or decree of any court,
arbitrator,  administrative  agency or other governmental body applicable to the
Company or any of their respective properties or assets or (ii) conflict with or
result  in a  breach  of any of the  terms,  conditions  or  provisions  of,  or
constitute (with notice or lapse of time or both) a default (or give rise to any
right of  termination,  cancellation  or  acceleration)  under, or result in the
creation of, any  Encumbrance  (as defined  below) upon any of the properties or
assets of the Company  under its  Articles  of  Incorporation,  as amended,  its
Certificate  of  Designations  (in the form to be filed as  provided  herein) or
By-laws,  or any material contract to which the Company is a party, except where
such violation,  conflict or breach would not, individually or in the aggregate,
have a Material  Adverse Effect.  As used herein,  "Encumbrance"  shall mean any
liens, charges,  encumbrances,  equities,  claims,  options,  proxies,  pledges,
security  interests,  or other  similar  rights of any  nature,  except for such
conflicts,  breaches  or  defaults  which  would  not,  individually  or in  the
aggregate, have a Material Adverse Effect.

         (e)  APPROVALS.  Except  as set forth on  SCHEDULE  2(E),  no  material
permit,  authorization,  consent or approval of or by, or any notification of or
filing with,  any person or entity  (governmental  or  otherwise) is required in
connection  with the  execution,  delivery  or  performance  of the  Transaction
Documents,  including the issuance and sale of the  Securities,  by

                                       4

<PAGE>
the Company.  There is no approval of the Company's  stockholders required under
applicable  laws in connection  with the execution and delivery the  Transaction
Documents  or  the  consummation  of  the  transactions   contemplated  thereby,
including the filing of the Certificate of Designations  and the issuance of the
Securities.

         (f) FILINGS, TAXES AND FINANCIAL STATEMENTS.  (i) The Company has filed
its annual report on Form 10-K for the year ended December 31, 1997 (the "Annual
Report"),  its related proxy materials and the quarterly report on Form 10-Q for
the quarter  ended March 31, 1998 (the  "Quarterly  Report,"  together  with the
Annual  Report,  including  all exhibits and  schedules  required to be filed in
connection  therewith,  the "SEC  Filings")  with the  Securities  and  Exchange
Commission,  the American Stock Exchange, Inc., and any other required person or
entity  (governmental or otherwise) in a timely manner and as otherwise required
by applicable laws and regulations,  including the federal  securities acts. The
audited  financial  statements of the Company for the fiscal year ended December
31, 1997 included in the Annual Report (the "Audited Financial Statements"), and
the  Company's  unaudited  balance  sheet for the period  ending March 31, 1998,
together with the accompanying statements of operations and cash flows including
the notes  thereto  included  in the  Quarterly  Report  (the  "March  Financial
Statements"; collectively, with the Audited Financial Statements, the "Financial
Statements")  are  accurate  and  complete in all  material  respects and fairly
present the financial  condition of the Company as at the dates thereof and have
been  prepared in  accordance  with  generally  accepted  accounting  principles
applied on a consistent basis throughout the periods indicated (except as may be
otherwise indicated in such financial statements or the notes thereto), subject,
in the  case  of the  March  Financial  Statements,  to  normal  year-end  audit
adjustments  (which shall not be material in the  aggregate)  and the absence of
footnote disclosures.

         (ii) The Company  has filed in a timely  manner all  material  federal,
state,  local and  foreign  tax  returns,  reports  and  filings  (collectively,
"Returns"),  including income, franchise, property and other taxes, and has paid
or accrued  the  appropriate  amounts  reflected  on such  Returns.  None of the
Returns have been audited or challenged, nor has the Company received any notice
of challenge  nor have any of the amounts or other data  included in the Returns
been challenged or reviewed by any governmental authority.

         (iii)  Except as  disclosed  in the SEC  Filings or listed in  SCHEDULE
2(F),  which sets forth a true and accurate list and description of any employee
benefit plans  maintained or sponsored by the Company or to which the Company is
required to make contributions,  the Company does not maintain,  sponsor, is not
required to make  contributions  to or otherwise have any liability with respect
to any pension,  profit sharing, thrift or other retirement plan, employee stock
ownership  plan,  deferred  compensation,   stock  ownership,   stock  purchase,
performance  share,  bonus or other  incentive plan,  severance plan,  health or
group insurance plan, welfare plan, or other similar plan, agreement,  policy or
understanding (whether written or oral), whether or not such plan is intended to
be qualified  under  Section  401(a) of the Code,  within the meaning of Section
3(3) of the Employee  Retirement Income Security Act of 1974, as amended,  which
plan covers any employee or former employee of the Company.

                                       5
<PAGE>

         (g) ABSENCE OF CHANGES. Except as set forth on SCHEDULE 2(G), since May
31, 1998,  there has not been (a) any material  adverse  change in the business,
properties,  condition (financial or otherwise),  operations or prospects of the
Company;  (b) any  damage,  destruction  or  loss,  whether  or not  covered  by
insurance,   materially  and  adversely  affecting  the  business,   properties,
condition (financial or otherwise),  operations or prospects of the Company; (c)
any declaration,  setting aside or payment of any dividend or other distribution
or payment  (whether in cash, stock or property) in respect of the capital stock
of the Company,  or any  redemption  or other  acquisition  of such stock by the
Company;  (d) any  disposal  or lapse of any trade  secret,  invention,  patent,
trademark,  trademark  registration,  service mark,  service mark  registration,
copyright,  copyright  registration,  or any  application  therefor or filing in
respect thereof that had a Material Adverse Effect;  (e) loss of the services of
any of the key  officers or key  employees  of the  Company  that had a Material
Adverse  Effect;  (f) any incurrence of or entry into any  liability,  mortgage,
lien, commitment or transaction, including without limitation, any borrowing (or
assumption or guarantee thereof) or guarantee of a third party's obligations, or
capital expenditure (or lease in the nature of a conditional purchase of capital
equipment)  in excess of $50,000;  or (g) any material  change by the Company in
accounting  methods or principles or (h) any change in the assets,  liabilities,
condition  (financial or  otherwise),  results or operations or prospects of the
Company from those  reflected on the  Quarterly  Report,  except  changes in the
ordinary course of business that have not, individually or in the aggregate, had
a Material Adverse Effect.

         (h) NO  LIABILITIES.  Except  as set  forth  in  the  Quarterly  Report
attached  hereto,  the Company has not  incurred or suffered  any  liability  or
obligation,  matured  or  unmatured,  contingent  or  otherwise,  except  in the
ordinary course of business that have not, individually or in the aggregate, had
a Material Adverse Effect.

         (i)  PROPERTIES  AND  ASSETS;  ETC.  (i) The SEC Filings  disclose  all
patents and other intellectual  property material to the business and operations
of the Company and all  applications  therefore  and  licenses,  sublicenses  or
agreements in respect  thereof which the Company owns or has the right to use or
to which the Company is a party ("Proprietary  Rights").  The Proprietary Rights
are adequate for the conduct of the Company's  business.  Except as set forth in
the SEC Filings, the Sheffield License Agreement,  or where the absence of which
would  not have a  material  Adverse  Effect,  (A) the  Company  is the sole and
exclusive owner of all right, title and interest in an to all Proprietary Rights
free  and  clear  of all  liens,  claims,  charges,  equities,  rights  of  use,
encumbrances  and  restrictions  whatsoever,  (B)  the  Company  does  not  have
knowledge  of any  basis  for any  claim  of  infringement  or  misappropriation
contesting the validity or Company's  right to use any Proprietary  Rights;  (C)
all of such patents, trademark registrations,  service mark registrations, trade
name registrations and copyrights and copyright  registrations,  whether foreign
or domestic,  have been duly issued and have not been  canceled,  abandoned,  or
otherwise  terminated;  and  (D)  all  of  the  Company's  patent  applications,
trademark applications,  service mark applications,  trade name applications and
copyright applications have been duly filed.


                                       6
<PAGE>
         (ii) Each of the  Contracts  listed as an exhibit to the  Company's SEC
Filings is a legal and valid agreement  binding upon each of the parties thereto
and is in full force and effect except where the expiration or termination  have
not, individually or in the aggregate had a Material Adverse Effect. To the best
knowledge of the Company,  there is no breach or default by any party thereunder
that had a Material  Adverse  Effect.  Such  Contracts  constitute  all material
agreements, arrangements or understandings required to be included as an exhibit
in such  reports  under  Item  601 of the  Securities  and  Exchange  Commission
Regulations.

         (iii) The Company has and maintains adequate and sufficient  insurance,
including liability,  casualty and products liability insurance,  covering risks
associated with its business, properties and assets, including insurance that is
customary for companies similarly situated.

         (iv) The  Company,  its  business  and  properties  and  assets  are in
compliance,  in all material respects, with all applicable laws and regulations,
including without limitation,  those relating to (a) health, safety and employee
relations, (ii) environmental matters,  including the discharge of any hazardous
or  potentially  hazardous  materials  into  the  environment,   and  (iii)  the
development,  commercialization  and sale of  pharmaceutical  and  biotechnology
products,  including  all  applicable  regulations  of the  U.S.  Food  and Drug
Administration and comparable foreign regulatory authorities.

         (j)  LEGAL  PROCEEDINGS,   ETC.  There  is  no  legal,  administrative,
arbitration or other action or proceeding or governmental  investigation pending
or, to the best of the Company's  knowledge  threatened against the Company,  or
any  director,  officer or  employee  of the  Company,  which is  required to be
described  in the SEC  Filings  and is not so  described.  The Company is not in
violation of or default under, any material laws, judgments, injunctions, orders
or  decrees  of  any  court,   governmental  department,   commission,   agency,
instrumentality or arbitrator applicable to its business.

         (k)  DISCLOSURE.  The  Company's  Annual  Report and  periodic  reports
subsequently filed under Section 13 of the Exchange Act, and the representations
and  warranties  set forth  herein and the  Transaction  Documents,  when viewed
collectively,  do not contain any untrue statement of a material fact or omit to
state any material fact  necessary to make the statements  contained  herein and
therein not  misleading in light of  circumstances  in which they were made. (l)
BROKERS OR FINDERS.  The Company has not retained any investment banker,  broker
or finder in connection  with the  transactions  contemplated by the Transaction
Documents.

         SECTION 3.  REPRESENTATION AND WARRANTIES OF EIS. EIS hereby represents
and warrants to the Company as follows:

         (a) ORGANIZATION. EIS is a corporation duly organized, validly existing
and in good standing  under the laws of Bermuda and has all requisite  corporate
power and authority to own and lease its properties, to carry on its business as
presently  conducted  and as  proposed to be

                                       7

<PAGE>
conducted  and  to  consummate  the  transactions  contemplated  hereby.  EIS is
qualified and in good standing to do business in each  jurisdiction in which the
nature of the  business  conducted  or the  property  owned by it requires  such
qualification,  except where the failure to so qualify  would not  reasonably be
expected  to  have a  material  adverse  effect  on the  business  or  condition
(financial or otherwise) of EIS.

         (b)  AUTHORIZATION  OF AGREEMENT.  EIS has full legal right,  power and
authority to enter into this  Agreement  and  purchase and accept the Note,  and
perform  its  obligations  hereunder,  which  have been duly  authorized  by all
requisite  corporate action.  This Agreement and the purchase of the Convertible
Note are the valid and binding  obligations of EIS,  enforceable against them in
accordance with their terms.

         (c) NO CONFLICTS.  The  execution,  delivery and  performance by EIS of
this  Agreement,  the  purchase  and  acceptance  of the  Convertible  Note  and
compliance with provisions hereof by EIS, will not (i) violate any provisions of
applicable  law,  statute,  rule or regulation  applicable to EIS or any ruling,
written,  injunction,  order,  judgment  or  decree of any  court,  arbitration,
administrative agency of other governmental body applicable to EIS of any of its
properties or assets or (ii) conflict with or result in any breach of any of the
terms,  conditions or provisions of, or constitute (with notice or lapse of time
to both) a default (or give rise to any right of  termination,  cancellation  or
acceleration)  under, or result in the creation of any  Encumbrance  upon any of
the  properties  or  assets of EIS under the  Certificate  of  Incorporation  or
By-laws of EIS or any material contract to which EIS is party, except where such
violation conflict or breach would not, individually or in the aggregate, have a
material adverse effect on EIS.

         (d) APPROVALS. No permit, authorization, consents or approval of or by,
or any  notification  of or filing with, any person or entity  (governmental  or
otherwise) is required in connection with the execution, delivery or performance
of this Agreement or the Convertible  Note (including the funding and acceptance
thereof) by EIS.

         (e) INVESTMENT REPRESENTATIONS.  (i) EIS is an "accredited investor" as
that term is defined in Rule 501(a) of  Regulation  D. EIS is  sophisticated  in
transactions  of this type and capable of evaluating the merits and risks of the
transactions  described herein and in the other Transaction  Documents,  has the
capacity to protect its own  interests,  has reviewed  the SEC  Filings,  and is
aware of the risk factors  relating to an investment in the Company as disclosed
in such filings. EIS has not been formed solely for the purpose of entering into
the  transactions  described  herein and therein and is acquiring the Securities
for investment for its own account,  not as a nominee or agent, and not with the
view to, or for sale in connection  with, any  distribution of any part thereof;
provided,  that EIS shall be  permitted to convert or exchange  such  Securities
and/or transfer them as permitted  herein and under applicable law. EIS has been
afforded the opportunity to ask questions of and  information  about the Company
and its business and  prospects,  from  management  and  representatives  of the
Company,  and have relied on its own  independent  judgment in making a judgment
about an investment in the Securities.

                                       8
<PAGE>
         (ii)  Nothing  contained  in this  Section  3(e) shall limit any of the
Company's  representations  or  warranties  or limit  EIS's  recourse in respect
thereof.

         (iii) EIS has not retained any investment  banker,  broker or finder in
connection with the transactions contemplated by the Transaction Documents.

         SECTION 4. COVENANTS OF THE COMPANY. (a) NON-DISCLOSURE. From and after
the date hereof,  the Company  shall not disclose to any person or entity (other
than its  directors,  officers and agents who need to know such  information  in
connection  with the  transactions  described  herein and the other  Transaction
Documents (each of whom shall be informed of this confidentiality  provision and
in respect of whose breaches the Company shall be  responsible))  the content of
this Agreement or any of the other Transaction Documents or the substance of the
transactions  described herein,  without the prior written consent of EIS (which
consent  shall not be  unreasonably  withheld or delayed),  except to the extent
required by applicable laws, regulations or administrative or judicial processes
in respect  of press  releases,  periodic  reports  or other  public  disclosure
prepared in good faith by the Company;  provided, that the Company shall provide
EIS with a reasonable  opportunity  to review such  releases or reports prior to
release.  This Section 4 shall not be construed  to prohibit  disclosure  of any
information which has not been previously  determined to be confidential by EIS,
or which  shall have  become  publicly  disclosed  (other  than by breach of the
Company's obligations hereunder).

         (b) BOARD OF DIRECTORS.  Immediately  following  the  Company's  Annual
Meeting of  Stockholders  scheduled to be held on July 15, 1998,  the  Company's
board of directors shall be expanded by one member, and EIS shall be entitled to
appoint a director  to fill the  vacancy so created  (the "EIS  Director"),  who
shall be reasonably satisfactory to the Company, and who shall be a duly elected
director.  The Company shall not enter into any agreement relating to a material
acquisition  or sale of assets  or  financing  agreements  from the date of this
Agreement  until July 15, 1998  without  the prior  approval of EIS or the prior
election of the EIS Director to its Board of Directors.  From and after the date
hereof and for so long as EIS and/or its  respective  affiliates  own Securities
that represent  ownership of at least 5% of the Common Stock, on a fully diluted
basis,  the Company  shall use its best  efforts to cause the EIS Director to be
elected to the Company's  board of  directors,  by including the EIS Director in
the management  slate of directors at each meeting of  stockholders  at which an
election of directors occurs.

         (c) FULLY-DILUTED STOCK OWNERSHIP.  Notwithstanding any other provision
of this Agreement,  in the event that EIS shall have determined that at any time
it  (together  with its  Affiliates,  if  applicable)  holds or has the right to
receive Common Stock (or securities or rights,  options or warrants exercisable,
exchangeable  or  convertible  for or into  Common  Stock)  representing  in the
aggregate in excess of 19.9% of the Company's outstanding Common Stock (assuming
any such  exercise,  exchange or conversion,  but not the exercise,  exchange or
conversion of any other similar  securities),  EIS shall have the right,  in its
sole  discretion,  rather than acquiring such  securities  from the Company,  to
exchange  such number of  securities,  as are necessary to bring its holdings to
below 19.9% of the voting securities of the Company, for non-


                                       9
<PAGE>

voting,  liquidation  preferred  stock of the Company (which shall be reasonably
satisfactory to the Company and EIS), which equity  securities shall be entitled
to all of the other rights and benefits of the Common  Stock.  In the event that
EIS shall  undertake to exercise  such right,  EIS shall  retain the  additional
right to exchange  such new class of equity  security for Common  Stock,  in its
discretion on terms that are mutually agreeable to the Company and EIS.

         (d)  CERTAIN  PREEMPTIVE  RIGHTS.  For a period of four  years from and
after the date hereof,  EIS shall be entitled to participate in any  convertible
debt or equity  financing  (the  "Preemptive  Right")  undertaken by the Company
(each, a "Capital Raising"), in order that EIS may maintain its then current PRO
RATA  percentage  ownership  interest in equity  securities  (on a fully diluted
basis) of the Company. Notwithstanding the foregoing, the Preemptive Right shall
terminate and be of no further force and effect at such time as EIS's  ownership
interest in the Company's Common Stock falls below 5%, on a fully-diluted basis.
Such participation by EIS shall be on terms no less attractive to EIS than those
offered to any other potential  investor in a Capital  Raising;  provided,  that
such  Preemptive  Right  shall not apply to (i) any BONA  FIDE  offering  to the
public pursuant to the Securities Act, or (ii) an offering of securities  solely
in  connection  with (A) an  acquisition  of assets,  merger,  consolidation  or
similar  transaction with an unaffiliated  third party, or (B) an employee stock
option plan.

         (e) USE OF PROCEEDS. The Company shall use $15,500,000 of the aggregate
proceeds  of the sale of the  Initial  Common  Stock and the Series C  Preferred
solely for the purpose of meeting its capitalization and funding requirements to
Newco.

         SECTION 5. MUTUAL  COVENANTS OF THE PARTIES.  (a) RIGHT OF  CONVERSION.
EIS may,  pursuant to the Certificate of  Designations,  from and after the date
hereof and until the term of the Series C Preferred  shall  expire,  convert the
Series C Preferred into Common Stock ("Conversion Right).

         (b) RIGHTS OF  EXCHANGE.  (i) FIRST  EXCHANGE  RIGHT.  (A) EIS may,  in
accordance with the Certificate of Designations,  exchange the originally issued
shares of the Series C Preferred  for an aggregate  of 50% of the common  stock,
par value  $1.00 per share of Newco (the  "Newco  Common  Stock"),  owned by the
Company  (the  "First  Exchange  Right").  Thereafter,  such  shares of Series C
Preferred shall be of no further force or effect;  provided, that all additional
shares of Series C  Preferred  issued as a dividend  thereon  shall  continue to
carry  all  rights   attributable   thereto   pursuant  to  the  Certificate  of
Designations. Notwithstanding the foregoing, EIS, and any permitted transferees,
will convert any Dividend Shares (as defined in the Certificate of Designations)
within thirty  months of the date of exercise of the First  Exchange  Right,  in
accordance with Article 7 of the Certificate of Designations.

         (B) The First  Exchange  Right shall  terminate upon the earlier of (X)
exercise  of the  Conversion  Right by EIS and (Y)  termination  of the Series C
Preferred.

                                       10
<PAGE>
         (ii) SECOND EXCHANGE RIGHT. In the event that EIS shall  consummate the
exercise of the First Exchange Right, EIS shall be entitled to purchase from the
Company,  for consideration in the amount of $[text omitted], a number of shares
of Newco Common Stock sufficient to increase EIS's ownership interest therein to
[text omitted] (the "Second Exchange Right").

         (iii)  THIRD  EXCHANGE  RIGHT.  (A) In the event  that EIS  shall  have
consummated  the  exercise  of each of the First  Exchange  Right and the Second
Exchange  Right,  EIS shall be  entitled,  and the Company  shall be required at
EIS's request,  to enter into good faith negotiations to arrange for the sale of
the remaining  [text  omitted] of Newco Common Stock owned by the Company to EIS
(the "Final Purchase"), for consideration of fair market value ("FMV"); such FMV
to be  determined  without  regard to EIS's [text  omitted]  ownership  interest
(i.e., as if such sale were to an unaffiliated third party and without effect to
a premium for EIS's control position).

         (B) In the event that EIS and the Company are unable to reach agreement
on the FMV and other terms to be negotiated in  connection  with such sale,  the
parties shall mutually agree as to an arbitrator (or, failing mutual  agreement,
an  arbitrator  shall by appointed by the American  Arbitration  Association  in
accordance with its customary appointment provisions; each an "Arbitrator"), the
expense  of  whom  shall  be  borne  equally  by EIS and  the  Company,  and the
arbitrator shall establish FMV.

         (C) FMV as  determined  by the  Arbitrator  shall be  binding  upon the
Company,  and the Company shall be obligated to enter into the Final Purchase at
EIS's discretion;  however, EIS shall be bound by the Arbitrator's determination
of FMV and be required to enter into the Final  Purchase  only if such FMV shall
be an amount  which is less than  EIS's most  recent  offer to the  Company.  In
addition,   in  order  to   accommodate   the  Company's   internal   accounting
requirements,  the  Company  shall be entitled  to request  that the  Arbitrator
determine  what  portion of FMV is  comprised  of the value of rights to the MSI
Technology  (as defined in the  Sheffield  License  Agreement),  licensed by the
Company to Newco;  provided,  that such  determination  shall be for information
purposes only, and shall not create or add to EIS's obligations hereunder.

         (D) In the event that EIS shall  fail to enter into the Final  Purchase
within 30 days of receipt of notice of the  Arbitrator's  determination  of FMV,
the Company shall be free, for a period of [text omitted]  months from and after
the date of receipt of such notice,  to consummate a sale of its remaining [text
omitted]  interest  in Newco to an  unaffiliated  third  party  (notwithstanding
Article IV of the Newco  Subscription  Agreement)  without  first  offering such
interest to EIS.

         (b) FURTHER  ASSURANCES.  From and after the date  hereof,  each of the
parties  hereto agree to do or cause to be done such further acts and things and
deliver or cause to be  delivered  to each other  such  additional  assignments,
agreements,  powers  and  instruments,  as each may  reasonably  require or deem
advisable to carry into effect the purposes of the  Transaction  Documents or to
better to assure and confirm unto each other their respective rights, powers and
remedies hereunder and thereunder.

                                       11
<PAGE>
         SECTION 6. CONVERTIBLE NOTE. (a) ISSUANCE.  (i) Beginning with the date
which is 90 days from and after the date hereof, and until the date which is the
24-month anniversary of the date hereof, EIS shall be required, at the Company's
discretion, to purchase up to $[text omitted] of debt under the Convertible Note
in minimum increments of $[text omitted];  provided,  that the maximum amount of
debt under the  Convertible  Note which the  Company may require EIS to purchase
shall be $[text  omitted] in the event that the ADDS Technology (as described in
the Newco License  Agreement) is not acquired by Newco on or before December 31,
1998;

         (ii) the maximum  amount of debt under the  Convertible  Note which EIS
shall be required to purchase in any calendar quarter shall be $500,000.

         (b)  CONDITIONS  TO THE  PURCHASE OF  CONVERTIBLE  DEBT.  It shall be a
condition to EIS's  obligation to purchase any debt under the  Convertible  Note
that (A) each of the  representations  and warranties set forth in Section 2(a),
(b)(iii),  (c),  (d), (f), (i) and (l) shall be true and correct in all material
respects as if the date hereof were the proposed funding date thereof; provided,
that any  reference  to the  Quarterly  Report  shall  refer to the most  recent
quarterly  report on Form 10-Q and/or any report filed pursuant to Section 13 of
the Securities  Exchange Act of 1934, as amended (the "Exchange Act"),  required
to be  filed by the  Company  under  applicable  law  immediately  prior to such
funding date and SEC Filings  shall refer to all filings  required to be made by
the Company under applicable law on or prior to such date, (B) there shall be no
default or breach in any material  respect by the Company or Newco of a material
obligation under any of the Transaction Documents or any other agreement between
the Company or Newco or any of its  affiliates,  on the one hand, and EIS or any
of their  affiliates,  on the other hand,  (C) Newco  shall  continue to require
funds,  and the Company shall be continuing to provide  services,  in connection
with the R&D  Program  (as defined in the  Development  Agreement),  and (D) the
Company shall have executed and  delivered to EIS the  promissory  note attached
hereto as EXHIBIT C.

         (c)  USE OF  PROCEEDS.  The  Company  shall  use  the  proceeds  of the
Convertible  Debt, if any, as follows:  [text  omitted];  provided,  that in the
event of a failure to acquire  the ADDS  Technology  on or before  December  31,
1998,  the Company shall use [text  omitted] of the proceeds of the  Convertible
Debt to meet its funding  obligations to Newco in connection with Newco research
and development.

         SECTION 7.  SURVIVAL  AND  INDEMNIFICATION.  (a) SURVIVAL  PERIOD.  The
representations and warranties of the Company contained herein shall survive for
a period of one year from and after the date hereof.

         (b)  INDEMNIFICATION.  In addition to all rights and remedies available
to the  parties  hereunder  at law or in  equity,  each  party  hereto  (in such
capacity,  an "Indemnifying Party") shall


                                       12
<PAGE>

indemnify  each other  party  hereto,  and its  respective  affiliates,  and its
respective affiliates' stockholders,  officers,  directors,  employees,  agents,
representatives,   successors  and  assigns   (collectively,   the  "Indemnified
Person"),  and save and hold each  Indemnified  Person harmless from and against
and pay on behalf of or  reimburse  each such  Indemnified  Person,  as and when
incurred,  for any and all loss,  liability,  demand,  claim,  action,  cause of
action, cost, damage, deficiency,  tax, penalty, fine or expense, whether or not
arising  out of any  claims by or on behalf  of such  Indemnified  Person or any
third party,  including  interest,  penalties,  reasonable  attorneys'  fees and
expenses and all amounts paid in investigation,  defense or settlement of any of
the foregoing  (collectively,  "Losses"),  that any such Indemnified  Person may
suffer,  sustain incur or become subject to, as a result of, in connection with,
relating or incidental to or by virtue of:

         (i) any  misrepresentation  or  breach of  warranty  on the part of the
Indemnifying Party under Section 2 or 3 of this Agreement; or

         (ii) any nonfulfillment, default or breach of any covenant or agreement
on the part of the Indemnifying Party under Section 4 or 5 of this Agreement.

         (c) MAXIMUM RECOVERY. Notwithstanding anything to this Agreement to the
contrary,  in no event shall Sheffield be liable for indemnification  under this
Section 7, the  Transaction  Documents,  or  otherwise in an amount in excess of
$[text omitted],  in the aggregate.  No Indemnified  Party shall assert any such
claim unless Losses in respect thereof incurred by any Indemnified  Party,  when
aggregated with all previous  Losses  hereunder,  equal or exceed  $50,000;  and
after the  $50,000  threshold  is  reached,  each  indemnified  person  shall be
entitled to be  indemnified  for the amount of all claims  arising  hereunder in
excess of $50,000.

         (d)  EXCEPTION.  Notwithstanding  the  foregoing,  and  subject  to the
following  sentence,  upon  judicial  determination  that is final and no longer
appealable,  that the act or  omission  giving rise to the  indemnification  set
forth  above  resulted  primarily  out  of  or  was  based  primarily  upon  the
Indemnified Person's  negligence(unless such Indemnified Person's negligence was
based  upon the  Indemnified  Persons  reliance  in good  faith  upon any of the
representations,  warranties,  covenants  or promises  made by the  Indemnifying
Party herein) the  Indemnifying  Party shall not be  responsible  for any Losses
sought to be indemnified in connection  therewith,  and the  Indemnifying  Party
shall be entitled to recover from the Indemnified Persons all amounts previously
paid in full or partial satisfaction of such indemnity,  together with all costs
and expenses  (including  reasonable  attorneys fees) of the Indemnifying  Party
reasonably  incurred  in  connection  with the  Indemnified  Party's  claim  for
indemnity,  together with interest at the rate per annum  publicly  announced by
Morgan Guaranty Trust Company as its prime rate from the time of payment of such
amounts to the Indemnified Person until repayment to the Indemnifying Party.

         (e) INVESTIGATION.  All indemnification  rights hereunder shall survive
the  execution  and  delivery  of this  Agreement  and the  consummation  of the
transactions  contemplated  hereby to the extent provided in Section 7(b) above,
irrespective of any


                                       13
<PAGE>

investigation, inquiry or examination made for or on behalf of, or any knowledge
of the Indemnified Persons or the acceptance of any certificate or opinion.

         (f)  CONTRIBUTION.  If the  indemnity  provided  for the this Section 7
shall be, in whole or in part,  unavailable to any  Indemnified  Person,  due to
Section 7(b) being declared  unenforceable by a court of competent  jurisdiction
based upon reasons of public policy,  so that Section 7(b) shall be insufficient
to hold each such Indemnified  Person harmless from Losses which would otherwise
be indemnified hereunder, then the Indemnifying Party and the Indemnified Person
shall  each  contribute  to the  amount  paid or  payable  for such Loss in such
proportion as is appropriate to reflect not only the relative  benefits received
by the  Indemnifying  Party on the one hand and the  Indemnified  Person  on the
other, but also the relative fault of the Indemnifying  Party and be in addition
to any liability  that the  Indemnifying  Party may otherwise  have.  Subject to
Section 7(h) hereunder,  the indemnity,  contribution and expense  reimbursement
obligations that the  Indemnifying  Party has under this Section 7 shall survive
the expiration of the  Transaction  Documents.  The parties hereto further agree
that  the  indemnification  and  reimbursement  commitments  set  forth  in this
Agreement shall apply whether or not the Indemnified  Person is a formal part to
any such lawsuit, claims or other proceedings.

         (g) LIMITATION.  No claim shall be brought by an Indemnified  Person in
respect of any  misrepresentation  or breach of  warranty  under this  Agreement
after one year from and after the date hereof; and any claim for nonfulfillment,
default or breach of any covenant  shall be brought  within one year of the date
of that such Indemnified  Person became aware or should have become aware of the
nonfulfillment,  default or breach. Except as set forth in the previous sentence
and in Section 7(c) above, this Section 7 is not intended to limit the rights or
remedies otherwise  available to any party hereto with respect to this Agreement
or the Transaction Documents.

         SECTION 8. NOTICES. All notices, demands and requests of any kind to be
delivered to any party in connection with this Agreement shall be in writing and
shall be deemed to have been duly given if  personally  or hand  delivered or if
sent by an  internationally-recognized  overnight  delivery or by  registered or
certified  airmail,  return receipt requested and postage prepaid,  addressed as
follows:

                      (i) if to the Company, to:

                          Sheffield Pharmaceuticals, Inc.
                          37 South Main Street
                          Pittsford, New York  14534
                          Attn: Chairman

                                       and

                                       14
<PAGE>

                          Sheffield Pharmaceuticals, Inc.
                          425 South Woodsmill Road
                          St. Louis, Missouri 63017-3441
                          Attention: Chief Executive Officer

                          with a copy to:

                          Olshan Grundman Frome & Rosenzweig LLP
                          505 Park Avenue
                          New York, NY  10022
                          Attention: Daniel J. Gallagher

                          (ii) if to EIS, to:

                          Elan International Services, Ltd.
                          Flatts, Smiths Parish
                          Bermuda, FL04
                          Attention: Director

                          with a copy to:

                          Brock Silverstein McAuliffe LLC
                          153 East 53rd Street , 56th Floor
                          New York, New York 10022
                          Attention: David Robbins

or to such  other  address  as the party to whom  notice is to be given may have
furnished to the other party hereto in writing in accordance  with provisions of
this  Section 8. Any such notice or  communication  shall be deemed to have been
received  (i) in the  case of  personal  or hand  delivery,  on the date of such
delivery, (ii) in the case of an  internationally-recognized  overnight delivery
service,  on the second  business  day after the date when sent and (iii) in the
case of mailing, on the fifth business day following that day on which the piece
of mail containing such  communication is posted.  Notice hereunder may be given
on behalf of the parties by their respective attorneys.

         SECTION 9. ENTIRE  AGREEMENT.  This Agreement and the other Transaction
Documents  contain the entire  understanding  of the parties with respect to the
subject  matter  hereof and supersede all prior  agreements  and  understandings
among the parties with respect thereto.

         SECTION 10. AMENDMENTS.  This Agreement may not be modified or amended,
or any of the  provisions  hereof  waived,  except by written  agreement  of the
Company and EIS.


                                       15
<PAGE>
         SECTION 11. COUNTERPARTS AND FACSIMILE.  The Transaction  Documents may
be  executed in any number of  counterparts,  and each such  counterpart  hereof
shall be deemed to be an original instrument, but all such counterparts together
shall constitute one agreement.  Each of the Transaction Documents may be signed
and delivered to the other party by facsimile  transmission;  such  transmission
shall be deemed a valid signature.

         SECTION 12. HEADINGS.  The section and paragraph  headings contained in
this  Agreement are for reference  purposes only and shall not affect in any way
the meaning or interpretation of the Agreement.

         SECTION 13.  GOVERNING  LAW.  This  Agreement  shall be governed by and
construed in accordance  with the laws of the State of New York,  without giving
effect  to  principles  of  conflicts  of  laws.  Each  of  the  parties  hereby
irrevocably  submits to the  jurisdiction of any New York State or United States
Federal court sitting in the county,  city and state of New York over any action
or  proceeding  arising  out of or  relating  to  this  Agreement  or the  other
Transaction  Documents;  and each hereby  waives the defense of an  inconvenient
forum for the maintenance of such an action.

         SECTION 14. EXPENSES.  Each of the parties shall be responsible for its
own costs and expenses incurred in connection with the transactions contemplated
hereby and by the other Transaction Documents.

         SECTION 15. PUBLIC  RELEASES;  ETC. The parties shall  reasonably agree
upon the contents of any press  release or releases and other public  disclosure
in respect of the transactions  contemplated hereby, and except as may otherwise
be required by applicable law or judicial or administrative process or which the
Company  concludes in good faith is required by applicable  securities  laws and
regulations.

         SECTION 16. SCHEDULES,  ETC. All statements contained in any exhibit or
schedule  delivered by or on behalf of the parties hereto, or in connection with
the transactions contemplated hereby, are an integral part of this Agreement and
shall be deemed representations and warranties hereunder.

         SECTION  17.  ASSIGNMENTS.  This  Agreement  and all of the  provisions
hereof shall be binding upon and inure to the benefit of the parties  hereto and
their respective  successors and permitted  assigns.  This Agreement,  the other
Transaction  Documents,  and  the  Securities  may  be  transferred  by  EIS  to
affiliates and subsidiaries.




                                       16
<PAGE>
         IN WITNESS  WHEREOF,  each of the  undersigned  has duly  executed this
Securities Purchase Agreement as of the date first written above.


                                      SHEFFIELD PHARMACEUTICALS, INC.



                                      By:/s/ Thomas M. Fitzgerald
                                         ---------------------------------------
                                          Thomas M. Fitzgerald
                                          Chairman

                                      ELAN INTERNATIONAL SERVICES, LTD.



                                      By:/s/ Kevin Insley
                                        -----------------------------
                                         Name: Kevin Insley
                                        Title: President

<PAGE>
                                                                       EXHIBIT B

                                     FORM OF

                          CERTIFICATE OF DESIGNATIONS,
                             PREFERENCES AND RIGHTS

                                       OF

                 SERIES C CUMULATIVE CONVERTIBLE PREFERRED STOCK

                                       OF

                         SHEFFIELD PHARMACEUTICALS, INC.

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

                           Pursuant to Section 151 of
              the General Corporation Law of the State of Delaware

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


                  Sheffield  Pharmaceuticals,  Inc., a corporation organized and
existing  under  the  General  Corporation  Law of the  State of  Delaware  (the
"Corporation"),  hereby certifies that the following resolutions were adopted by
the Board of Directors of the  Corporation  by unanimous  written  consent dated
June 26, 1998  pursuant to  authority  of the Board of  Directors as required by
Section 151 of the General Corporation Law of the State of Delaware:

                  RESOLVED,  that pursuant to the authority expressly granted to
and vested in the Board of  Directors  of the  Corporation  (the  "Board" or the
"Board of Directors") by the provisions of the Certificate of  Incorporation  of
the Corporation (the "Certificate of  Incorporation"),  there hereby is created,
out of the 3,000,000 shares of preferred stock of the Corporation  authorized in
Article FOURTH of the Certificate of Incorporation  (the "Preferred  Stock"),  a
series of Preferred Stock  consisting of 23,000 shares,  which series shall have
the following  powers,  designations,  preferences and relative,  participating,
optional or other rights,  and the  following  qualifications,  limitations  and
restrictions  (in  addition  to  the  powers,  designations,   rights,  and  the
qualifications,  limitations and  restrictions,  set forth in the Certificate of
Incorporation which are applicable to the Preferred Stock).


<PAGE>
                                    ARTICLE 1
                             DESIGNATION AND AMOUNT

                  The shares of such  series  shall be  designated  as "Series C
Cumulative Convertible Preferred Stock" (the "Series C Preferred Stock") and the
authorized number of shares constituting such series shall be 23,000 shares. The
par value of the Series C Preferred  Stock  shall be $.01 per share.  The stated
value of the Series C Preferred Stock shall be One Thousand Dollars ($1,000) per
share (the "Stated Value").


                                    ARTICLE 2
                                   DEFINITIONS

                  The  terms  defined  in  this  Article  whenever  used in this
Certificate of Designations have the following respective meanings:

                  (a)      "AMEX" means the American Stock Exchange.

                  (b) "BUSINESS DAY" means a day other than Saturday,  Sunday or
any day on which  banks  located  in the  State of New  York are  authorized  or
obligated to close.

                  (c) "COMMON  SHARES" or "COMMON  STOCK" means shares of common
stock, $.01 par value, of the Corporation.

                  (d)  "CONVERSION  DATE"  means  any  day on  which  all or any
portion of shares of the Series C Preferred  Stock is  converted  in  accordance
with the provisions hereof.

                  (e)  "CONVERSION  NOTICE" has the meaning set forth in Section
6.1.

                  (f)  "CONVERSION  PRICE" has the  meaning set forth in Section
6.1.

                  (g)  "CORPORATION"  means  Sheffield  Pharmaceuticals,  Inc. a
Delaware  corporation,  and any  successor  or resulting  corporation  by way of
merger,  consolidation,  sale or  exchange  of all or  substantially  all of the
Corporation's assets, or otherwise.

                  (h) "CURRENT MARKET PRICE" on any date of determination  means
the closing price of a Common Share on such day as reported on the AMEX,  or, if
such security is not listed or admitted to trading on the AMEX, on the principal
national  security exchange or quotation system on which such security is quoted
or listed or  admitted  to  trading,  or, if not quoted or listed or admitted to
trading on any national  securities exchange or quotation system, the average of
the closing bid and ask prices of such security on the  over-the-counter  market
on  the  day  in  question  as  reported  by  the  National   Quotation   Bureau
Incorporated,  or a similar generally accepted  reporting service,  or if not so
available, in such manner as furnished by any Nasdaq member firm of the National
Association of Securities Dealers, Inc. selected from time to time

                                       -2-

<PAGE>
by the  Board of  Directors  of the  Corporation  for that  purpose,  or a price
determined in good faith by the Board of Directors of the  Corporation  as being
equal to the fair market value thereof, as the case may be.

                  (i)  "DIVIDEND  PAYMENT  DATE"  has the  meaning  set forth in
Section 4.1.

                  (j)  "DIVIDEND  PERIOD"  has the  meaning set forth in Section
4.1.

                  (k)  "DIVIDEND  SHARES" means the shares of Series C Preferred
Stock issued as dividends on outstanding  shares of Series C Preferred  stock in
accordance with Article 4 hereof.

                  (l)  "DOLLARS" or "$" means  currency of the United  States of
America.

                  (m) "EXCHANGE DATE" has the meaning set forth in Article 7.

                  (n) "EXCHANGE NOTICE" has the meaning set forth in Article 7.

                  (o) "HOLDER" OR "HOLDERS" means Elan  International  Services,
Ltd., a Bermuda corporation, any successor thereto, or any Person(s) to whom the
Series C Preferred  Stock is  subsequently  transferred  in accordance  with the
provisions hereof.

                  (p) "ISSUE  DATE" means the date of  original  issuance of the
applicable share of Series C Preferred Stock.

                  (q) "JUNIOR  SECURITIES"  has the meaning set forth in Article
3.

                  (r)  "LIQUIDATION  PREFERENCE"  has the  meaning  set forth in
Section 5.1(b).

                  (s) "MANDATORY  CONVERSION  DATE" has the meaning set forth in
Section 6.3.

                  (t)  "PARI  PASSU  SECURITIES"  has the  meaning  set forth in
Article 3.

                  (u)  "PERSON"   means  an   individual,   a   corporation,   a
partnership,  an association,  a limited  liability  company,  a  unincorporated
business  organization,  a  trust  or  other  entity  or  organization,  and any
government or political subdivision or any agency or instrumentality thereof.

                  (v) "RIGHTS" has the meaning set forth in Section 6.2(e).

                  (w) "SERIES C PREFERRED  STOCK"  means the Series C Cumulative
Convertible  Preferred Stock of the Corporation  created by this  Certificate of
Designations.

                  (x)  "SPD"  Systemic  Pulmonary  Delivery,   Ltd.,  a  Bermuda
corporation.

                                       -3-

<PAGE>
                  (y) "STATED VALUE" has the meaning set forth in Article 1.

                  (z) "TRADING  DAY" means any day on which  purchases and sales
of securities  authorized for quotation on the AMEX are reported  thereon or, if
the Common  Stock is not  listed or  admitted  to trading on the AMEX,  a day on
which the principal  national  securities  exchange on which the Common Stock is
listed or admitted to trading is open for the  transaction  of business,  or, if
the  Common  Stock is not so listed  or  admitted  to  trading  on any  national
securities exchange, a day on which the Nasdaq National Market (or any successor
thereto)  or  such  other  system  then in use is open  for the  transaction  of
business,  or, if the Common Stock is not quoted by any such  organization,  any
day other than a Saturday,  Sunday or a day on which banking institutions in the
State of New York are  authorized  or  obligated  by law or  executive  order to
close.


                                    ARTICLE 3
                                      RANK

                  The  Series C  Preferred  Stock  shall  rank (i)  prior to the
Common  Stock;  (ii)  prior  to any  class or  series  of  capital  stock of the
Corporation hereafter created other than "Pari Passu Securities"  (collectively,
with  the  Common  Stock,  "Junior  Securities");  (iii)  pari  passu  with  the
Corporation's  Series B Cumulative  Convertible  Redeemable Preferred Stock (the
"Series B  Preferred  Stock");  and (iv) pari  passu with any class or series of
capital  stock of the  Corporation  hereafter  created  specifically  ranking on
parity  with the  Series C  Preferred  Stock  (collectively,  with the  Series B
Preferred Stock, "Pari Passu Securities").


                                    ARTICLE 4
                                    DIVIDENDS

         SECTION 4.1

                  (a) (i) Subject to Article 6, the Holder  shall be entitled to
receive, out of funds legally available for the payment of dividends,  dividends
at the rate of 7.0% per annum  (computed  on the basis of a 360-day  year)  (the
"Dividend  Rate")  on the  Stated  Value of each  outstanding  share of Series C
Preferred Stock payable on and as of the most recent Dividend  Payment Date with
respect to each Dividend Period. Dividends on the Series C Preferred Stock shall
be cumulative  from the date of issue or the most recent  Dividend  Payment Date
upon  which  dividends  have been paid on the  Series C  Preferred  Stock by the
Corporation.


                                       -4-

<PAGE>
                  (ii) Dividend on the Series C Preferred Stock shall be payable
in equal quarterly  amounts on each March 31, June 30, September 30 and December
31 of each year (each,  a "Dividend  Payment  Date"),  commencing  September 30,
1998,  to the  holders of record of shares of the Series C Preferred  Stock,  as
they appear on the stock records of the  Corporation at the close of business on
any  record  date,  not more  than 60 days or less  than 10 days  preceding  the
payment  dates  thereof,  as shall be fixed by the Board of  Directors.  For the
purposes  hereof,  "Dividend  Period,"  in  respect  of any  share  of  Series C
Preferred Stock, shall mean (i) the period commencing on and including the Issue
Date of such  share  and  including  September  30,  1998 and,  thereafter,  the
quarterly  period  commencing  on and  including  the day after the  immediately
preceding  Dividend  Payment Date and ending on and  including  the  immediately
subsequent  Dividend  Payment  Date.  Accrued and unpaid  dividends for any past
Dividend Period may be declared and paid at any time,  without  reference to any
Dividend  Payment Date, to holders of record on such date, not more than 15 days
preceding the payment date thereof, as may be fixed by the Board of Directors.

                  (iii)  Dividends  on  the  outstanding   shares  of  Series  C
Preferred  Stock  shall  be  paid  through  the  issuance  of duly  and  validly
authorized and issued, fully paid and non-assessable additional shares of Series
C  Preferred  Stock  to be  issued  at the  rate of one (1)  share  of  Series C
Preferred  Stock for each  $1,000 of dividend  due and  payable.  No  fractional
shares of the  Series C  Preferred  Stock  shall be issued as  Dividend  Shares.
Instead  of any  fractional  shares  of Series C  Preferred  Stock  which  would
otherwise  be issuable  as Dividend  Shares,  the  Corporation  shall pay a cash
adjustment  in respect of such  fractional  interest in an amount equal to 1,000
times the fractional interest.

                  (b) The  Holder  shall not be  entitled  to any  dividends  in
excess  of the  cumulative  dividends,  as  herein  provided,  on the  Series  C
Preferred  Stock.  Except as provided in this Article 4, no interest,  or sum of
money in lieu of interest,  shall be payable in respect of any dividend  payment
or payments on the Series C Preferred Stock that may be in arrears.


                                    ARTICLE 5
                             LIQUIDATION PREFERENCE

         SECTION 5.1

                  (a) If the  Corporation  shall commence a voluntary case under
the Federal bankruptcy laws or any other applicable Federal or State bankruptcy,
insolvency  or similar law, or consent to the entry of an order for relief in an
involuntary case under any law or to the appointment of a receiver,  liquidator,
assignee,  custodian,  trustee,  sequestrator (or other similar official) of the
Corporation or of any  substantial  part of its property,  or make an assignment
for the benefit of its  creditors,  or admit in writing its inability to pay its
debts  generally  as they  become  due,  or if a decree or order  for  relief in
respect of the  Corporation  shall be entered by a court having  jurisdiction in
the premises in an  involuntary  case under the Federal  bankruptcy  laws or any
other  applicable  Federal  or  state  bankruptcy,  insolvency  or  similar  law
resulting in

                                       -5-

<PAGE>
the  appointment  of  a  receiver,  liquidator,  assignee,  custodian,  trustee,
sequestrator  (or  other  similar   official)  of  the  Corporation  or  of  any
substantial  part of its property,  or ordering the winding up or liquidation of
its affairs,  and any such decree or order shall be unstayed and in effect for a
period of ninety (90)  consecutive  days and, on account of any such event,  the
Corporation  shall liquidate,  dissolve or wind up, or if the Corporation  shall
otherwise  liquidate,  dissolve or wind up (each such event being  considered  a
"Liquidation Event"), no distribution shall be made to the holders of any Junior
Securities of the Corporation upon liquidation, dissolution or winding up unless
prior  thereto,  the  Holders,  subject to Article  5, shall have  received  the
Liquidation  Preference  (as  defined in Article  5.1(b))  with  respect to each
share.  If upon the  occurrence  of a  Liquidation  Event,  the assets and funds
available for distribution among the Holders and holders of shares of Pari Passu
Securities  shall be  insufficient  to permit the payment to such holders of the
preferential  amounts payable  thereon,  then the entire assets and funds of the
Corporation  legally  available for distribution to the Series C Preferred Stock
and the Pari Passu Securities shall be distributed  ratably among such shares in
proportion to the ratio that the preferential amounts payable on each such share
bears to the aggregate preferential amounts payable on all such shares.

                  (b) For purposes  hereof,  the  "Liquidation  Preference" with
respect to a share of the Series C Preferred Stock shall mean an amount equal to
(i) the Stated Value thereof,  plus (ii) the aggregate of all accrued and unpaid
stock  dividends on such share of Series C Preferred Stock until the most recent
Dividend  Payment Date;  PROVIDED  that, in the event of an actual  liquidation,
dissolution or winding up of the  Corporation,  the amount referred to in clause
(iii) above shall be calculated by including  accrued and unpaid stock dividends
to the actual date of such  liquidation,  dissolution or winding up, rather than
the applicable Dividend Payment Due Date referred to above.


                                    ARTICLE 6
                     CONVERSION OF SERIES C PREFERRED STOCK

         SECTION 6.1                CONVERSION.

                  (a)  Holders of shares of the Series C  Preferred  Stock shall
have the  right,  exercisable  at any time and  from  time to time  through  the
Mandatory  Conversion  Date,  to convert  all or any such shares of the Series C
Preferred  Stock  into  shares  of  the  Common  Stock  (calculated  as to  each
conversion to the nearest  1/100th of a share) at the conversion  price of $1.41
per share of the Common Stock  (equivalent to a conversion rate of 709.22 shares
of Common  Stock for each share of the Series C Preferred  Stock so  converted),
subject  to  adjustment  as  described  below  (the  "Conversion  Price").  Upon
conversion,  no  adjustment  or payment will be made for  dividends,  but if any
holder  surrenders a share of the Series C Preferred Stock for conversion  after
the close of business on the record date for the payment of a dividend and prior
to  the  opening  of  business  on  the  next  Dividend   Payment  Date,   then,
notwithstanding  such conversion,  the dividend payable on such Dividend Payment
Date will be paid to the registered holder of such share on such record date. In
such event, such share, when

                                       -6-

<PAGE>
surrendered  for  conversion  during the period between the close of business on
any  dividend   payment   record  date  and  the  opening  of  business  on  the
corresponding Dividend Payment Date, must be accompanied by payment of an amount
equal to the  dividend  payable on such  Dividend  Payment  Date on the share so
converted.

                  (b) Any holder of a share or shares of the Series C  Preferred
Stock  electing  to  convert  such share or shares  thereof  shall  deliver  the
certificate or certificates  therefor to the principal office of the Corporation
or any transfer agent for the Common Stock,  with the form of notice of election
to  convert  attached  to this  Certificate  of  Designations  (the  "Conversion
Notice"),  fully  completed  and  duly  executed  and (if such  required  by the
Corporation or any conversion  agent)  accompanied by instruments of transfer in
form  satisfactory to the Corporation and to any conversion agent, duly executed
by the registered Holder of his duly authorized  attorney.  The conversion right
with  respect to any such shares  shall be deemed to have been  exercised at the
date upon which the  certificates  therefore  accompanied  by such duly executed
notice of election and instruments of transfer and such taxes, stamps, funds, or
evidence  of  payment  shall have been so  delivered,  and the Person or Persons
entitled to receive the shares of the Common Stock issuable upon such conversion
shall be treated for all purposes as the record Holder or Holders of such shares
of the Common Stock upon said date.

                  (c) From and after the  delivery of the  Conversion  Notice in
respect of any conversion of shares of Series C Preferred Stock, all such shares
of Series C Preferred  Stock shall be deemed to have been  converted into shares
of  Common  Stock  as of  the  applicable  Conversion  Date  at  the  applicable
conversion  rate,  all stock  dividends on such shares of the Series C Preferred
Stock shall cease to accrue, and all rights of the Holders thereof as holders of
Series C  Preferred  Stock,  except the right to receive  all accrued and unpaid
stock  dividends to such  Conversion Date at the applicable rate for such shares
of Series C Preferred Stock and the right to receive  certificates  representing
shares of Common Stock issuable upon the  conversion of such shares  (including,
without limitation, with respect to such stock dividends, as applicable),  shall
cease  and  terminate,  such  shares  of  Series C  Preferred  Stock  shall  not
thereafter be transferred  (except with the consent of the Corporation) and such
shares shall not be deemed to be outstanding for any purpose whatsoever.

                  (d)  No  fractional  shares  of  the  Common  Stock  or  scrip
representing  fractional shares shall be issued upon conversion of shares of the
Series C Preferred Stock. If more than one share of the Series C Preferred Stock
shall be surrendered  for conversion at one time by the same holder,  the number
of full  shares of the Common  Stock which  shall be  issuable  upon  conversion
thereof shall be computed on the basis of the aggregate  number of shares of the
Series C Preferred Stock so surrendered. Instead of any fractional shares of the
Common Stock which would  otherwise be issuable upon conversion of any shares of
the Series C Preferred  Stock,  the  Corporation  shall pay a cash adjustment in
respect of such  fraction in an amount equal to the same fraction of the Current
Market  Price  for the  Common  Stock  on the last  Trading  Day  preceding  the
applicable date of conversion.


                                       -7-

<PAGE>
                  (e) Each  Conversion  Notice  under  this  Section  6.1  shall
request the conversion of at least 500 shares of Series C Preferred Stock or the
remaining  balance of Series C Preferred  Stock held by the  converting  Holder,
whichever is less.

         SECTION 6.2 ADJUSTMENTS.  The Conversion Price and the number of shares
issuable  upon  conversion  of the  Series C  Preferred  Stock  are  subject  to
adjustment from time to time as follows:

                  (a)  MERGER,  SALE OF  ASSETS,  ETC.  If at any time while the
Series C Preferred Stock, or any portion thereof,  is outstanding there shall be
(i) a reorganization  (other than a combination,  reclassification,  exchange or
subdivision  of  shares  otherwise  provided  for  herein),  (ii)  a  merger  or
consolidation of the Corporation  with or into another  corporation in which the
Corporation is the surviving entity but the shares of the Corporation's  capital
stock outstanding immediately prior to the merger are converted by virtue of the
merger  into  other  property,  whether  in the  form  of  securities,  cash  or
otherwise,  or (iii) a sale or  transfer  of the  Corporation's  properties  and
assets as, or substantially as, an entirety to any other person,  then as a part
of such reorganization, merger, consolidation, sale or transfer lawful provision
shall be made so that the Holder  shall  thereafter  be entitled to receive upon
conversion of the Series C Preferred Stock,  during the period specified herein,
the number of shares of stock or other  securities  or property of the successor
corporation resulting from such reorganization,  merger, consolidation,  sale or
transfer   that  the  Holder  would  have  been  entitled  to  receive  in  such
reorganization,  consolidation,  merger,  sale  or  transfer  if  the  Series  C
Preferred  Stock had been  converted  immediately  before  such  reorganization,
merger,  consolidation,  sale or transfer,  all subject to further adjustment as
provided in this Section 6.2(a). The foregoing provisions of this Section 6.2(a)
shall similarly apply to successive reclassification,  changes,  consolidations,
mergers,  mandatory  share  exchanges and sales and transfers.  If the per share
consideration  payable to the holder  hereof for shares in  connection  with any
such transaction is in a form other than cash or marketable securities, then the
value of such  consideration  shall be  determined in good faith by the Board of
Directors. In all events, appropriate adjustment (as determined in good faith by
the Board of Directors)  shall be made in the  application  of the provisions of
this Certificate of Designations with respect to the rights and interests of the
Holder after the transaction, to the end that the provisions of this Certificate
of Designations  shall be applicable after that event, as near as reasonably may
be, in relation  to any shares or other  property  deliverable  after that event
upon conversion of the Series C Preferred Stock.

                  (b)  RECLASSIFICATION,  ETC. If the  Corporation,  at any time
while the Series C Preferred Stock, or any portion thereof, remains outstanding,
shall  change any of the  securities  as to which  conversion  rights under this
Certificate  of  Designations  exist  into the  same or a  different  number  of
securities  of any other  class or classes,  the Series C Preferred  Stock shall
thereafter  represent the right to acquire such number and kind of securities as
would  have been  issuable  as the  result of such  change  with  respect to the
securities that were subject to the conversion  rights under this Certificate of
Designations  immediately prior to such reclassification or other change and the
Conversion  Price  therefor  shall be  appropriately  adjusted,  all  subject to
further adjustment as provided in this Certificate of Designations.

                                       -8-

<PAGE>
                  (c)  SPLIT,  SUBDIVISION  OR  COMBINATION  OF  SHARES.  If the
Corporation  at any time  while the Series C  Preferred  Stock,  or any  portion
thereof, remains outstanding shall split, subdivide or combine the securities as
to which conversion rights under this Certificate of Designations  exist, into a
different  number of securities of the same class, the Conversion Price shall be
proportionately   decreased   in  the  case  of  a  split  or   subdivision   or
proportionately increased in the case of a combination.

                  (d) ADJUSTMENTS FOR DIVIDENDS IN STOCK AND OTHER SECURITIES OR
PROPERTY. If while the Series C Preferred Stock, or any portion hereof,  remains
outstanding,  the holders of the securities as to which conversion  rights under
this Certificate of Designations  exist at the time shall have received,  or, on
or after the record date fixed for the determination of eligible stockholders of
the  Corporation,  shall  have  become  entitled  to  receive,  without  payment
therefor,  other or additional stock or other securities or property (other than
cash) of the Corporation by way of dividend, then and in each case, the Series C
Preferred  Stock shall  represent  the right to  acquire,  upon  conversion,  in
addition to the number of shares of the security  receivable  upon conversion of
the  Series  C  Preferred   Stock,   and  without   payment  of  any  additional
consideration  therefor,  the amount of such other or additional  stock or other
securities  or  property  (other than cash) of the  Corporation  that the Holder
would  hold on the date of such  conversion  had it been the holder of record of
the security  receivable  upon conversion of the Series C Preferred Stock on the
date  hereof and had  thereafter,  during the period from the date hereof to and
including the date of such  conversion,  retained such shares and/or  additional
stock  available by it as aforesaid  during such  period,  giving  effect to all
adjustments called for during such period by the provisions of this Section 6.2.

                  (e) REPURCHASES OR REDEMPTIONS OF COMMON STOCK OR OPTIONS.  If
the  Corporation  at any time  while  shares  of  Series C  Preferred  Stock are
outstanding,  shall repurchase or redeem any outstanding  shares of Common Stock
or rights,  options or warrants granting the holder thereof the right to acquire
shares of Common Stock (collectively, the "Rights") in a single transaction or a
series of related  transactions  involving an aggregate repurchase or redemption
price in excess of $500,000 at a price (on a per share  basis)  which is greater
than 125% of the Current Market Price as of the day prior to such  repurchase or
redemption,  the Conversion Price shall thereupon be adjusted by multiplying the
Conversion  Price in effect  immediately  prior to the applicable  repurchase or
redemption  by a fraction  (i) the  numerator  of which shall be the  Conversion
Price in effect  immediately prior to such repurchase or redemption and (ii) the
denominator of which shall be the fair market value of the consideration paid by
the  Corporation  for each share of Common  Stock (or each share of Common Stock
issuable upon exercise of the Right(s) subject to such repurchase or redemption)
in such repurchase or redemption.

                  (f) CERTIFICATE AS TO ADJUSTMENTS. Upon the occurrence of each
adjustment or readjustment  pursuant to this Section 6.2, the Corporation at its
expense shall promptly  compute such  adjustment or  readjustment  in accordance
with the terms hereof and furnish to the Holder a certificate setting forth such
adjustment  or  readjustment  and  showing  in detail  the facts upon which such
adjustment or readjustment is based.

                                       -9-

<PAGE>
                  (g)  CUMULATIVE  ADJUSTMENTS.  No adjustment in the Conversion
Price shall be required  until  cumulative  adjustments  result in a concomitant
change  of 1% or more of the  Conversion  Price as in  effect  prior to the last
adjustment of the Conversion  Price;  PROVIDED,  HOWEVER,  that any  adjustments
which by reason of this Section 6.2 are not required to be made shall be carried
forward and taken into account in any subsequent  adjustment.  All  calculations
under  this  Section  6.2 shall be made to the  nearest  cent or to the  nearest
one-hundredth  of a share,  as the case may be. No adjustment to the  Conversion
Price shall be made for cash dividends.

         SECTION 6.3 MANDATORY CONVERSION. On the tenth anniversary of the Issue
Date (the "Mandatory Conversion Date"), all Series C Preferred Stock outstanding
on such date shall be automatically  converted at the Conversion Price in effect
as of the  Mandatory  Conversion  Date.  For purposes of such  conversion,  each
Holder  shall  be  deemed  to have  delivered  a  Notice  of  Conversion  to the
Corporation in accordance with Section 6.1, with the applicable  Conversion Date
being the Mandatory Conversion Date.

                                    ARTICLE 7
                                 EXCHANGE RIGHTS

                  Holders of at least a majority of the then outstanding  shares
of Series C Preferred Stock shall have the right, by written notice delivered to
the  Corporation in the form of notice of election to exchange  attached to this
Certificate of Designations  (the "Exchange  Notice"),  fully completed and duly
executed by the requisite  Holders,  to require the  Corporation to exchange all
outstanding  shares of Series C Preferred Stock as of any Dividend  Payment Date
(such  date  being the  "Exchange  Date")  for fifty  percent  (50%) of the then
outstanding  capital  stock of SPD owned by the  Corporation  as of the Exchange
Date, with such capital stock to be delivered to all Holders on a pro rata basis
based on their  respective  holdings of Series C Preferred Stock on the Exchange
Date.  The  Exchange  Notice  shall be  delivered  at least 30 days prior to the
Exchange  Date.  Upon  receipt of the Exchange  Notice,  the  Corporation  shall
promptly  notify all  Holders of its  receipt of thereof  and all  Holders  will
promptly  deliver the  certificate  or  certificates  therefor to the  principal
office  of the  Corporation  or any  transfer  agent  for the  Common  Stock for
cancellation.

                  From and after the delivery of the Exchange Notice, all shares
of Series C Preferred Stock (other than Dividend Shares) shall be deemed to have
been exchanged for fifty percent (50%) of the then outstanding  capital stock of
SPD (in the aggregate) as of Exchange  Date, all stock  dividends on such shares
of the Series C Preferred  Stock  shall  cease to accrue,  and all rights of the
Holders  thereof  as holders of Series C  Preferred  Stock,  except the right to
receive all accrued  and unpaid  stock  dividends  to the  Exchange  Date at the
applicable  rate for such shares of such shares of Series C Preferred  Stock and
the right to receive  certificates  representing  the  applicable  shares of SPD
capital stock  issuable in respect of the exchange,  shall cease and  terminate,
such shares of Series C  Preferred  Stock shall not  thereafter  be  transferred
(except with the consent of the Corporation) and such shares shall not be deemed
to be outstanding for any purpose whatsoever.

                                      -10-

<PAGE>
                  The Rights of Holders under this Article 7 shall terminate and
such  Holders  shall not be entitled  to  exchange  shares of Series C Preferred
Stock under this Article 7 after a Conversion  Notice has been  delivered to the
Corporation  pursuant  to this  Section  6.1.  Notwithstanding  anything  to the
contrary in this Article 7, the delivery of the exchange notice shall not effect
any Holder's  rights to convert  Dividend Shares held by such holder pursuant to
Section 6.2 hereof,  except that any  conversion  of Dividend  Shares must occur
within thirty months from the Exchange Date.


                                    ARTICLE 8
                                  VOTING RIGHTS

                  The  holders  of the Series C  Preferred  Stock have no voting
power,  except as otherwise provided by the General Corporation Law of the State
of Delaware ("DGCL"), in this Article 8, and in Article 9 below.

                  The  Corporation   shall  provide  each  Holder  of  Series  C
Preferred Stock with prior  notification  of any meeting of the  shareholders of
the  Corporation  (and copies of proxy materials and other  information  sent to
shareholders).  In the event of any taking by the Corporation of a record of its
shareholders  for the purpose of  determining  shareholders  who are entitled to
receive  payment of any dividend or other  distribution,  any right to subscribe
for, purchase or otherwise acquire (including by way of merger, consolidation or
recapitalization) any share of any class or any other securities or property, or
to receive any other right, or for the purpose of determining  shareholders  who
are entitled to vote in connection with any proposed liquidation, dissolution or
winding  up of the  Corporation,  the  Corporation  shall  mail a notice to each
Holder,  at least thirty (30) days prior to the  consummation of the transaction
or event,  whichever is earlier),  of the date on which any such action is to be
taken for the purpose of such dividend,  distribution, right or other event, and
a  brief  statement  regarding  the  amount  and  character  of  such  dividend,
distribution, right or other event to the extent known at such time.

                  To the extent  that under the DGCL the vote of the  Holders of
the  Series  C  Preferred  Stock,  voting  separately  as a class or  series  as
applicable,  is required to  authorize a given  action of the  Corporation,  the
affirmative  vote or consent of the Holders of at least a majority of the shares
of the Series C Preferred  Stock  represented  at a duly held meeting at which a
quorum is present or by written  consent of a majority of the shares of Series C
Preferred  Stock  (except as  otherwise  may be  required  under the DGCL) shall
constitute  the  approval of such action by the class.  To the extent that under
the DGCL  Holders  of the Series C  Preferred  Stock are  entitled  to vote on a
matter with Holders of Common Stock, voting together as one class, each share of
Series C  Preferred  Stock  shall be  entitled to a number of votes equal to the
number of shares of Common Stock into which  convertible the record date for the
taking of such vote of shareholders as the date as of which the Conversion Price
is  calculated.  Holders of the Series C  Preferred  Stock  shall be entitled to
notice of all  shareholder  meetings  or written  consents  (and copies of proxy
materials and other infirmation sent to shareholders) with respect to which they

                                      -11-

<PAGE>
would be  entitled  as of right  under the DGCL which  notice  would be provided
pursuant to the Corporation's bylaws and the DGCL.


                                    ARTICLE 9
                              PROTECTIVE PROVISIONS

                  So long as shares of Series C Preferred Stock are outstanding,
the  Corporation  shall not,  without  first  obtaining the approval (by vote or
written consent,  as provided by the DGCL) of the Holders of at least a majority
of the then outstanding shares of Series C Preferred Stock:

                  (a) create any new class or series of capital  stock  having a
preference  over the Series C Preferred  Stock as to distribution of assets upon
liquidation,  dissolution or winding up of the Corporation ("Senior Securities")
or  alter  or  change  the  rights,  preferences  or  privileges  of any  Senior
Securities so as to affect adversely the Series C Preferred Stock; or

                  (b)  amend  or  alter  whether  by  merger,  consolidation  or
otherwise,  any of the provisions of the Certificate of Incorporation (including
this Certificate of Designations)  that would change the preferences,  rights or
privileges  with  respect  to the Series C  Preferred  Stock so as to affect the
Series C Preferred Stock adversely.

                  In the  event  holders  of at  least a  majority  of the  then
outstanding shares of Series C Preferred Stock agree to allow the Corporation to
amend or alter the  preferences,  rights or privileges of the shares of Series C
Preferred Stock, pursuant to subsection (b) above, so as to affect adversely the
Series C Preferred  Stock,  then the  Corporation  will  deliver  notice of such
approved  change to the  Holders  of the Series C  Preferred  Stock that did not
agree to such  amendment or change (the  "Dissenting  Holders")  and  Dissenting
Holders  shall  have the  right for a period  of  thirty  (30)  days to  convert
pursuant to Section 6.2 of this  Certificate of Designations as they exist prior
to such  alteration  or  change or  continue  to hold  their  shares of Series C
Preferred Stock.


                                   ARTICLE 10
                                  MISCELLANEOUS

         SECTION 10.1 LOSS, THEFT,  DESTRUCTION OF PREFERRED STOCK. Upon receipt
of evidence  satisfactory to the Corporation of the loss, theft,  destruction or
mutilation  of shares of Series C  Preferred  Stock and, in the case of any such
loss,  theft or  destruction,  upon receipt of indemnity or security  reasonably
satisfactory to the Corporation,  or, in the case of any such  mutilation,  upon
surrender and  cancellation  of the Series C Preferred  Stock,  the  Corporation
shall  make,  issue and  deliver,  in lieu of such lost,  stolen,  destroyed  or
mutilated  shares of Series C Preferred  Stock, new shares of Series C Preferred
Stock of like date and tenor.


                                      -12-

<PAGE>
         SECTION 10.2 WHO DEEMED  ABSOLUTE  OWNER.  The Corporation may deem the
Person in whose name the Series C Preferred  Stock shall be registered  upon the
registry books of the Corporation to be, and may treat it as, the absolute owner
of the  Series C  Preferred  Stock  for the  purpose  of  receiving  payment  of
dividends on the Series C Preferred  Stock,  for the  conversion of the Series C
Preferred  Stock and for all other purposes,  and the  Corporation  shall not be
affected by any notice to the contrary.  All such  payments and such  conversion
shall be valid and effectual to satisfy and  discharge  the  liability  upon the
Series  C  Preferred  Stock  to the  extent  of the  sum or  sums so paid or the
conversion so made.

         SECTION 10.3  REGISTER.  The  Corporation  shall keep at its  principal
office a register in which the Corporation shall provide for the registration of
the Series C Preferred Stock.  Upon any transfer of the Series C Preferred Stock
in accordance with the provisions  hereof,  the Corporation  shall register such
transfer on the Series C Preferred Stock register.

         SECTION 10.4 WITHHOLDING. To the extent required by applicable law, the
Corporation  may  withhold  amounts  for or on account  of any taxes  imposed or
levied by or on behalf of any  taxing  authority  in the  United  States  having
jurisdiction  over the Corporation from any payments made pursuant to the Series
C Preferred Stock.

         SECTION  10.5  HEADINGS.  The  headings of the Articles and Sections of
this  Certificate of Designations  are inserted for convenience  only and do not
constitute a part of this Certificate of Designations.

                                      -13-

<PAGE>
         IN WITNESS  WHEREOF,  the  Corporation  has caused this  Certificate of
Designations,  Preferences  and  Rights to be signed by Loren G.  Peterson,  its
President and Chief Executive Officer,  and attested by Judy Roeske Bullock, its
Secretary, on this 30th day of June, 1998.

                                    SHEFFIELD PHARMACEUTICALS, INC.



                                    By:
                                        ----------------------------------------
                                        Loren G. Peterson
                                        President and Chief Executive Officer


                                    Attested:


                                    By: 
                                        ----------------------------------------
                                        Judy Roeske Bullock
                                        Secretary


                                      -14-

<PAGE>
                            FORM OF CONVERSION NOTICE


TO:      Sheffield Pharmaceuticals, Inc.
         Attention: Chief Financial Officer


                  The  undersigned  owner  of  shares  of  Series  C  Cumulative
Convertible Preferred Stock (the "Series C Preferred Stock") issued by Sheffield
Pharmaceuticals,  Inc.  (the  "Corporation")  hereby  irrevocably  exercises its
option to convert  __________ shares of the Series C Preferred Stock into shares
of the common stock,  $.01 par value, of the Corporation  ("Common  Stock"),  in
accordance  with the terms of the  Certificate of  Designations  of the Series C
Preferred Stock. The undersigned hereby instructs the Corporation to convert the
number of shares of the Series C Preferred  Stock specified above into shares of
Common Stock in accordance with the provisions of Article 6 of such  Certificate
of  Designations.  The  undersigned  directs that the Common Stock  issuable and
certificates therefor deliverable upon conversion,  the Series C Preferred Stock
recertificated,  if any, not being surrendered for conversion  hereby,  together
with any check in payment for fractional  Common Stock, be issued in the name of
and  delivered to the  undersigned  unless a different  name has been  indicated
below.  All  capitalized  terms used and not defined  herein have the respective
meanings assigned to them in such Certificate of Designations.


Dated:__________________


________________________________________
             Signature


                  Fill in for registration of Series C Preferred Stock:

Please print name and address
(including zip code number) :


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

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

                                      -15-

<PAGE>
                             FORM OF EXCHANGE NOTICE

TO:      Sheffield Pharmaceuticals, Inc.
         Attention: Chief Financial Officer


                  The  undersigned  owner(s)  of shares  of Series C  Cumulative
Convertible Preferred Stock (the "Series C Preferred Stock") issued by Sheffield
Pharmaceuticals, Inc. (the "Corporation") hereby irrevocably exercise its option
to cause the  Corporation to exchange  11,500 shares of Series C Preferred Stock
for 50% of the outstanding capital stock Systemic Pulmonary Delivery, Ltd. ("SPD
Stock") in accordance  with the terms of the  Certificate of Designations of the
Series C Preferred  Stock.  The undersigned  hereby instructs the Corporation to
advise all other holders of Series C Preferred  Stock,  if any, of this exercise
by the undersigned owner(s).  The undersigned direct that the SPD Stock issuable
and certificates  therefor  deliverable to the undersigned upon such exchange be
issued in the name of and delivered to the  undersigned  unless a different name
has been indicated below. All capitalized terms used and not defined herein have
the respective meanings assigned to them in such Certificate of Designations.

Dated:__________________


________________________________________
             Signature


                  Fill in for registration of SPD Stock:

Please print name and address
(including zip code number) :


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

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


                                      -16-


                                    CERTAIN  PORTIONS HAVE BEEN OMITTED BASED ON
                                    A  REQUEST   FOR   CONFIDENTIAL   TREATMENT;
                                    OMITTED  PORTIONS FILED  SEPARATELY WITH THE
                                    SECURITIES AND EXCHANGE COMMISSION

                        SYSTEMIC PULMONARY DELIVERY, LTD.
                    JOINT DEVELOPMENT AND OPERATING AGREEMENT

         JOINT DEVELOPMENT AND OPERATING  AGREEMENT,  dated as of June 30, 1998,
by and among  SYSTEMIC  PULMONARY  DELIVERY,  LTD., a Bermuda  corporation  (the
"Company"),  ELAN INTERNATIONAL  SERVICES,  LTD., a Bermuda corporation ("EIS"),
and SHEFFIELD PHARMACEUTICALS INC., a Delaware corporation ("Sheffield").

                                R E C I T A L S:

         A.  Sheffield  has  subscribed  for all of the issued  and  outstanding
shares  of  the  common  stock  of  the  Company  pursuant  to  the  terms  of a
subscription  agreement  between  Sheffield and the Company dated as of the date
hereof (the "SPD Subscription Agreement").

         B. ELAN CORPORATION,  PLC, an Irish public limited company ("Elan") and
an  Affiliate  of EIS,  has or has access to  intellectual  property,  including
patent  rights and know-how  relating to UPDASTM  technology  and the  Enhancing
Technology in the Systemic  Pulmonary  and Topical  Pulmonary  Fields,  as those
terms  are  defined  in the  Elan  License  Agreement  (the  "Elan  Intellectual
Property").

         C.  Sheffield  has or has access to certain  patent rights and know-how
relating to the  development  of technology in the Systemic  Pulmonary  Field as
defined  in  the  Sheffield  License  Agreement  (the  "Sheffield   Intellectual
Property").

         D. EIS,  Sheffield and the Company  desire to set forth herein  certain
provisions relating to the development of the Elan Intellectual Property and the
Sheffield Intellectual Property.

         E. Elan and the Company  have,  as of the date  hereof,  entered into a
license and supply  agreement (the "Elan License  Agreement") in connection with
the Elan Intellectual  Property.  Sheffield and the Company have, as of the date
hereof  entered  into (i) a  sublicense  and supply  agreement  (the  "Sheffield
License Agreement") in connection with the Sheffield  Intellectual Property, and
(ii) a license  agreement in connection  with patent  rights  related to certain
technology in the Topical Pulmonary Field (the "SPD License Agreement"; together
with the  Elan  License  Agreement  and the  Sheffield  License  Agreement,  the
"License Agreements").

                               A G R E E M E N T:

The parties agree as follows:

<PAGE>
                                   DEFINITIONS

         1.1 DEFINED TERMS.  Capitalized terms used herein and not defined shall
have the meaning  assigned to them in each of the  License  Agreements.  As used
herein, the terms below shall have the following meanings:

         "$" means United States dollars.

         "AFFILIATE"  means any  corporation or entity,  other than the Company,
controlling, controlled or under the common control of Elan or Sheffield, as the
case may be. For the purposes of this definition, "Control" shall mean direct or
indirect ownership of 25% or more of the issued stock or shares entitled to vote
for the election of directors.

         "BOARD" means the board of directors of the Company.

         "COST" shall have the meaning as described in Section 6.1 hereof.

         "EIS DIRECTOR" shall have the meaning described in Section 4.1 hereof.

         "ELAN  INTELLECTUAL  PROPERTY"  shall have the meaning as  described in
Recital B.

         "ELAN LICENSE  AGREEMENT" shall have the meaning described in Recital E
above.

         "FDA" means the United States Food and Drug Administration.

         "INDEMNIFIED  PERSON"  shall have the meaning as  described  in Section
10.1 hereof.

         "INDEMNIFYING  PARTY"  shall have the meaning as  described  in Section
10.1 hereof.

         "INITIAL  TERM"  means the  24-month  period from and after the Closing
Date.

         "LICENSE AGREEMENTS" means,  collectively,  the Elan License Agreement,
the Sheffield License Agreement and the SPD License Agreement.

         "LOSSES" shall have the meaning as described in Section 10.1 hereof.

         "PARTY"  means any party to this  Development  Agreement  and "PARTIES"
means all of them together.

         "PATENT  APPLICATION"  means an application  filed with the U.S. Patent
and Trademark Office (or its foreign national  equivalent) in order to acquire a
patent on a product or process.

                                       2
<PAGE>
         "PERMITTED  TRANSFEREE" means any Affiliate of EIS or Sheffield to whom
this Agreement shall be assigned, pursuant to the terms hereof.

         "PERSON" means an individual,  partnership, joint venture, corporation,
trust or unincorporated organization, a government or any department,  agency or
political subdivision thereof, or any other entity.

         "PRODUCTS"  shall have the  meanings as  described  in the Elan License
Agreement and the Sheffield License Agreement, respectively.

         "R&D PROGRAM" means all research and development  activity conducted in
order to develop the Products.

         "R&D  SERVICES"  means the  services to be provided by Elan,  Sheffield
and/or a third party, to The Company in accordance with the R&D Program.

         "SECURITIES PURCHASE AGREEMENT" means the securities purchase agreement
by and between EIS and Sheffield, dated as of the date hereof.

         "SHEFFIELD  DIRECTORS"  shall have the meaning as  described in Section
4.1 hereof.

         "SHEFFIELD  INTELLECTUAL  PROPERTY" shall have the meaning described in
Recital C hereof.

         "SHEFFIELD  LICENSE  AGREEMENT"  shall have the  meaning  described  in
Recital E hereof.

         "STEERING COMMITTEE" shall have the meaning as described in Section 5.1
hereof.

         "SUBSCRIPTION  AGREEMENT" means the SPD  Subscription  Agreement by and
between Sheffield and The Company, dated as of the date hereof.

         "TRANSACTION DOCUMENTS" shall mean,  collectively,  this Agreement, the
Subscription  Agreement,  the Securities  Purchase  Agreement,  the Elan License
Agreement,  the Sheffield License Agreement,  the SPD License Agreement, and any
other  documents or certificates  executed in connection  with the  transactions
contemplated hereunder and thereunder.

                                   ARTICLE II
                         REPRESENTATIONS AND WARRANTIES

         2.1 REPRESENTATIONS  AND WARRANTIES OF THE COMPANY.  The Company hereby
represents and warrants to each of EIS and Sheffield as follows,  as of the date
hereof:

                                       3
<PAGE>
         (a) ORGANIZATION.  The Company was incorporated on June 30, 1998 and is
validly existing and in good standing under the laws of Bermuda, and has all the
requisite  corporate  power and  authority to own and lease its  properties,  to
carry on its business as presently conducted and as proposed to be conducted and
to carry out the transaction contemplated hereby.

         (b)  AUTHORIZATION.  The  execution,  delivery and  performance  by the
Company of this Agreement,  have been duly authorized by all requisite corporate
actions;  this Agreement has been duly executed and delivered by the Company and
is the valid and binding  obligation of the Company,  enforceable  against it in
accordance with its terms.

         (c) NO  CONFLICTS.  The  execution,  delivery  and  performance  by the
Company of this  Agreement,  and compliance  with the  provisions  hereof by the
Company,  will not (a) violate any provision of applicable law, statute, rule or
regulation  applicable to the Company or any ruling,  writ,  injunction,  order,
judgment  or decree of any  court,  arbitrator,  administrative  agency or other
governmental  body  applicable to the Company or any of its properties or assets
or (b) conflict with or result in any breach of any of the terms,  conditions or
provisions  of, or  constitute  (with notice or lapse of time or both) a default
(or give rise to any right of termination,  cancellation or acceleration) under,
or result in the creation of, any Encumbrance (as defined below) upon any of the
properties  or  assets of the  Company  under,  the  charter  or  organizational
documents  of either or any  material  contract to which the Company is a party,
except where such  violation,  conflict or breach would not,  individually or in
the aggregate,  have a material  adverse effect on the Company.  As used herein,
"Encumbrance" shall mean any liens,  charges,  encumbrances,  equities,  claims,
options,  proxies,  pledges,  security interests, or other similar rights of any
nature.

         (d) APPROVALS. No permit, authorization,  consent or approval of or by,
or any  notification  of or filing with, any person or entity  (governmental  or
private) (collectively,  "Approval"),  which has not yet been obtained or given,
as the case may be, is required in connection  with the  execution,  delivery or
performance of this Agreement by the Company.

         (e) NO  LIABILITIES.  The Company  has not  conducted  any  business or
activities  since  its  incorporation,  and has no  liabilities  as of the  date
hereof.

         (f)  LEGAL  PROCEEDINGS,   ETC.  There  is  no  legal,  administrative,
arbitration or other action or proceeding or governmental  investigation pending
or threatened against the Company. The Company is not in violation of or default
under,  any  material  laws,  judgments,  injunctions,  orders or decrees of any
court,   governmental  department,   commission,   agency,   instrumentality  or
arbitrator applicable to its business.

         (g) DISCLOSURE. This Agreement does not contain any untrue statement of
a  material  fact or omit to  state  any  material  fact  necessary  to make the
statements contained herein and therein not misleading. The Company is not aware
of any material  contingency,  event or


                                       4
<PAGE>

circumstance relating to its business or prospects,  which could have a material
adverse  effect  thereon,  in order for the  disclosure  herein  relating to the
Company not to be misleading in any material respect.

         2.2  REPRESENTATIONS  AND  WARRANTIES  OF SHEFFIELD.  Sheffield  hereby
represents and warrants to each of EIS and the Company as follows:

         (a)  ORGANIZATION.   Sheffield  is  a  company  duly  incorporated  and
organized  and validly  existing  under  Delaware law and has all the  requisite
corporate  power and authority to own and lease its  respective  properties,  to
carry on its  respective  business as presently  conducted and as proposed to be
conducted  and to carry out the  transactions  contemplated  hereby except where
this failure to obtain such power and authority  would not,  individually  or in
the aggregate, have a Material Adverse Effect on Sheffield.

         (b) AUTHORITY.  Sheffield has full legal right,  power and authority to
enter into this Agreement and to perform its respective  obligations  hereunder,
which have been duly  authorized  and by all requisite  corporate  action.  This
Agreement is the valid and binding obligation of Sheffield,  enforceable against
Sheffield in accordance with its terms.

         (c) NO CONFLICTS. The execution,  delivery and performance by Sheffield
of this Agreement,  and compliance with the provisions  hereof by Sheffield will
not (a) violate any provision of  applicable  law,  statute,  rule or regulation
applicable to Sheffield,  or any ruling, writ,  injunction,  order,  judgment or
decree of any court,  arbitrator,  administrative  agency or other  governmental
body  applicable to Sheffield or any of its  respective  properties or assets or
(b)  conflict  with or result in any breach of any of the terms,  conditions  or
provisions  of, or  constitute  (with notice or lapse of time or both) a default
(or give rise to any right of termination,  cancellation or acceleration) under,
or result in the  creation of, any  Encumbrance  upon any of the  properties  or
assets of  Sheffield  under  its  charter  or  organizational  documents  or any
material  contract to which  Sheffield is a party,  except where such violation,
conflict or breach would not, individually or in the aggregate,  have a material
adverse effect on Sheffield.

         (d)  APPROVALS.   No  Approval  is  required  in  connection  with  the
execution,  delivery or performance  of this Agreement by Sheffield;  nor is any
Approval  required by Sheffield in order to fulfill its  respective  obligations
hereunder.

         (e)  LEGAL  PROCEEDINGS,   ETC.  There  is  no  legal,  administrative,
arbitration  or other legal action or proceeding or  governmental  investigation
pending  or  threatened   against  Sheffield  which  would  interfere  with  the
performance of its  obligations  hereunder.  Sheffield is not in violation of or
default under, any material laws, judgments,  injunctions,  orders or decrees of
any court,  governmental  department,  commission,  agency,  instrumentality  or
arbitrator applicable to its business.


                                       5
<PAGE>
         2.3  REPRESENTATIONS OF EIS. EIS hereby represents and warrants to each
of the Sheffield and the Company as follows, as of the date hereof:

         (a) ORGANIZATION.  EIS is a company duly incorporated and organized and
validly existing under Bermuda law and has all the requisite corporate power and
authority to own and lease its respective properties, to carry on its respective
business as presently conducted and as proposed to be conducted and to carry out
the transactions contemplated hereby.

         (b) AUTHORITY.  EIS has full legal right,  power and authority to enter
into this Agreement and to perform its respective obligations  hereunder,  which
have been duly authorized and by all requisite  corporate action. This Agreement
is  the  valid  and  binding  obligation  of  EIS,  enforceable  against  EIS in
accordance with its terms.

         (c) NO CONFLICTS.  The  execution,  delivery and  performance by EIS of
this Agreement,  and compliance  with the provisions  hereof by EIS will not (a)
violate any provision of applicable law, statute,  rule or regulation applicable
to EIS, or any ruling, writ, injunction, order, judgment or decree of any court,
arbitrator,  administrative  agency or other governmental body applicable to EIS
or any of its respective  properties or assets or (b) conflict with or result in
any breach of any of the terms, conditions or provisions of, or constitute (with
notice  or lapse  of time or  both) a  default  (or  give  rise to any  right of
termination,  cancellation or acceleration) under, or result in the creation of,
any Encumbrance upon any of the properties or assets of EIS under its charter or
organizational  documents  or any  material  contract  to which  EIS is a party,
except where such  violation,  conflict or breach would not,  individually or in
the aggregate, have a material adverse effect on EIS.

         (d)  APPROVALS.   No  Approval  is  required  in  connection  with  the
execution, delivery or performance of this Agreement by EIS; nor is any Approval
required by EIS in order to fulfill its respective obligations hereunder.

         (e)  LEGAL  PROCEEDINGS,   ETC.  There  is  no  legal,  administrative,
arbitration or other action or proceeding or governmental  investigation pending
or threatened  against EIS which would  interfere  with the  performance  of its
obligations hereunder. EIS is not in violation of or default under, any material
laws,  judgments,  injunctions,  orders or decrees  of any  court,  governmental
department,  commission, agency, instrumentality or arbitrator applicable to its
business.

                                   ARTICLE III
                               DEVELOPMENT FUNDING

         3.1 DEVELOPMENT FUNDING.  During the Initial Term, Sheffield shall make
such capital  contributions  to the Company as shall be necessary,  up to $[text
omitted], for the development of the Product, as shall be reasonably and in good
faith  determined  and certified by the Board,  consistent  with the R&D Program
mutually and reasonably agreed to by Sheffield and Elan.

                                       6
<PAGE>
                                   ARTICLE IV
                  EXCHANGES; TRANSFERS OF SECURITIES, GENERALLY

         4.1  EXCHANGES.  (a) EIS shall have the right,  as fully  described  in
Section  5(b)(i) of the  Securities  Purchase  Agreement,  to acquire 50% of the
issued  and  outstanding  number of shares of Common  Stock of the  Company,  in
exchange for the tender by EIS of all the shares of Series C Preferred  Stock of
Sheffield (the "First Exchange Right").

         (b) EIS shall have the right, as fully described in Section 5(b)(ii) of
the Securities Purchase Agreement,  to purchase from Sheffield for consideration
of $[text  omitted],  an additional [text omitted] of the issued and outstanding
shares of Common Stock of the Company;  provided, that the exercise of the First
Exchange Right shall have been consummated (the "Second Exchange Right").

         (c) EIS shall have the right, as fully  described in Section  5(b)(iii)
of the Securities Purchase Agreement, to negotiate in good faith to acquire from
Sheffield the remaining [text omitted] of the issued and  outstanding  shares of
Common Stock of the Company;  provided that the exercise of the Second  Exchange
Right has been consummated (the "Third Exchange Right").

         4.2  TRANSFER,   GENERALLY.  (a)  No  shareholder  of  the  Company  (a
"Shareholder") shall, directly or indirectly,  sell, assign,  pledge,  encumber,
hypothecate , grant a security interest in, or otherwise transfer (in each case,
a "Transfer") any Company Securities except in accordance with this Agreement or
the Securities Purchase  Agreement.  The Company shall not, and shall not permit
any transfer agent or registrar for the Company  Securities to transfer upon the
books  of the  Company  any  Company  Securities  from  any  Shareholder  to any
transferee,  in any manner,  except in  accordance  with this  Agreement  or the
Securities Purchase Agreement, and any purported transfer not in compliance with
this Agreement or the Securities Purchase Agreement shall be void.

         (b)  Except  as set  forth in the  Securities  Purchase  Agreement,  no
Shareholder shall be permitted to transfer Company Securities to an unaffiliated
third party without the consent of the other Shareholders;  except, that nothing
herein shall be deemed to restrict transfer of such securities to an Affiliate.

         4.3 TRANSFEREE BOUND. No Shareholder shall effect a transfer of Company
Securities unless such transferee shall agree to be bound by this Agreement, and
shall  further  agree to permit  the  transferring  shareholder  to act on their
behalf in  accordance  with the  provisions of this  Agreement.  Notwithstanding
anything contained herein to the contrary,  no transferee who receives shares of
the  Common  Stock  of the  Company  pursuant  to  Section  5(b)(iii)(D)  of the
Securities  Purchase  Agreement  shall  be  bound  by  the  provisions  of  this
Agreement.

                                       7
<PAGE>
         4.4  TERMINATION.  In the event  that EIS shall own 100% of the  voting
securities  of the Company,  the terms of this Article IV shall be of no further
force or effect.

                                    ARTICLE V
                               BOARD OF DIRECTORS

         5.1 BOARD OF  DIRECTORS.  (a) The Board of the Company shall consist of
three directors,  designated as follows:  EIS shall be entitled to designate one
director  (the "EIS  Director"),  Sheffield  shall be entitled to designate  two
directors (the "Sheffield  Directors").  EIS and Sheffield hereby agree that the
initial EIS Director shall be Kevin Insley and the initial  Sheffield  Directors
shall be Thomas Fitzgerald and Loren Peterson. The designation of future members
to the Board shall be subject to the  reasonable  approval of Sheffield,  in the
case of a EIS  Director,  and EIS,  in the  case of a  Sheffield  Director.  The
Company's  by-laws shall not provide for a Board that contains  staggered terms.
In the event that EIS shall consummate the exercise of the First Exchange Right,
the number of  directors  on the Board shall  increase  by one,  and the vacancy
created thereby shall be filled by a nominee of EIS.

         (b) Notwithstanding anything to the contrary herein, until the exercise
of the  Third  Exchange  Right  is  consummated,  Sheffield  (or  any  permitted
transferee  pursuant to Section 5(b) of the Securities Purchase Agreement) shall
be  entitled  to  designate  at least one  director  of the Company who shall be
entitled to attend all meetings of the Board of Directors  and  stockholders  of
the Company  and shall be entitled to such notice of all Board and  stockholders
meetings of the Company.

         5.2  VACANCIES.  In the event that a vacancy is created on the Board at
any time by the death,  disability,  retirement,  resignation  or removal of any
director,  or otherwise there shall exist or occur any vacancy on the Board: (a)
EIS, in the case of a vacancy due to the  absence of the EIS  Director,  and (b)
Sheffield,  in the case of vacancy due to the  absence of a Sheffield  Director,
shall be entitled to appoint a replacement.

         5.3  TERMINATION  OF  AGREEMENTS.  Except as provided in Section 5.1(b)
above or Section 5.5(b) below,  the covenants and  agreements  contained in this
Article  V shall  terminate  upon the  earlier  of (i)  termination  of the Elan
License  Agreement,  (ii) termination of the Sheffield  License  Agreement,  and
(iii)  the  date  that  either  EIS  or its  Permitted  Transferees  shall  have
consummated the exercise of the Second Exchange Right.

         5.4 CERTAIN ACTIONS REQUIRING APPROVALS. Until such time as the Company
shall have consummated an initial public offering of equity securities under the
Securities Act of 1933, as amended,  or an investment of at least  $5,000,000 is
made in the Company by an  unaffiliated  third party or parties,  the  following
actions shall not be  undertaken  by the Company  without the consent of the EIS
Director:  (a) filing an amendment to the Company's Articles of Incorporation or
altering  the by-laws of the  Company;  (b)  altering  the share  capital of the
Company;  (c) altering the number of  directors  of the Company;  (d)  acquiring
material assets (including


                                       8
<PAGE>

intellectual property and licenses),  or selling all or substantially all of the
assets of the Company,  or granting an option for the same;  (e)  incurrence  of
debt or liens  other than in the  ordinary  course of  business;  (f)  declaring
dividends or  distributions to or purchasing share capital from any Shareholder;
(g) disposition, licensing or sublicensing of any material asset; (h) entry into
or  ratification  of a joint venture,  contract or agreement not in the ordinary
course of business of the Company;  (i) granting,  issuing or selling any shares
of Common Stock, or options on the same, to any party, whether or not that party
shall be a  Shareholder  at the time of the grant;  (j) material  changes to the
business,  products or material  budgets of the Company;  or (k)  liquidating or
winding up the Company.  Notwithstanding the foregoing, the Company shall not be
required to obtain the consent of the EIS Director to purchase  assets  relating
to the ADDS Technology from Aeroquip Corporation for an aggregate purchase price
not to exceed $1 million.

         5.5 EIS ENFORCEMENT  RIGHT.  (a) In the event that EIS shall reasonably
believe  that  Sheffield  has  materially  breached  the terms of the  Sheffield
License  Agreement,  and that the Board  has  failed to  adequately  protect  or
exercise the Company's rights and remedies thereunder,  EIS shall have the right
to (i) pursue  such rights and  remedies  on behalf of the  Company  and/or (ii)
require the Company to pursue such rights and remedies.

         (b) Following the exercise of the Second Exchange Right, and only until
such time, if any, that EIS shall own 100% of the outstanding  equity securities
of the Company,  in the event that Sheffield  shall  reasonably  believe EIS has
materially breached the EIS License Agreement,  and that the Board has failed to
adequately  protect or exercise the  Company's  rights and remedies  thereunder,
Sheffield  shall have the right to (i) pursue such rights and remedies on behalf
of the  Company  and/or  (ii)  require  the  Company to pursue  such  rights and
remedies.

                                   ARTICLE VI
                      DIRECTION OF RESEARCH AND DEVELOPMENT

         6.1 STEERING  COMMITTEE.  (a) The  Directors  shall  appoint a steering
committee (the "Steering Committee") to perform certain advisory services,  such
delegation to be  consistent  with the  Directors'  right to delegate all powers
pursuant to the Company's  Certificate of Incorporation.  The Steering Committee
shall initially  consist of four members,  two of whom shall be appointed by the
EIS Director and two of whom shall be appointed by the Sheffield Directors.  EIS
and Sheffield hereby agree that the initial members of the Steering Committee to
be  appointed  by the EIS  Director  shall be Ena Prosser and Izzy Tsals and the
initial  members of the Steering  Committee  to be  appointed  by the  Sheffield
Directors  shall be David Byron and Carl  Siekman.  Each of the EIS Director and
the Sheffield Directors shall be entitled to remove any of their nominees to the
Steering  Committee  and  appoint  a  replacement  in place of any  nominees  so
removed, subject to reasonable approval of the other members of the Board.

         (b) The Steering  Committee shall be responsible for (i) assisting each
of Elan and Sheffield with the transfer of know-how,  Elan Intellectual Property
and Sheffield  Intellectual Property in accordance with each of the Elan License
Agreement and  Sheffield  License 


                                       9
<PAGE>

Agreement;  (ii)  providing  access  to  Elan's  external  network  of  industry
expertise;   and  (iii)  advising  the  Company  as  to  matters  pertaining  to
developmental strategy.

         (c) The Steering Committee shall report all significant developments to
the  Directors  on the  occurrence  thereof  and, in  addition,  shall report at
quarterly intervals to the Directors.

         (d) In  the  event  that  the  Company  shall  become  a  wholly  owned
Subsidiary  of EIS (or an  Affiliate)  the  existence of the Steering  Committee
shall terminate.

         6.2 DIRECTION OF RESEARCH & DEVELOPMENT . The Steering  Committee shall
also provide advisory services in connection with the design and  implementation
of the R&D Program.

                                   ARTICLE VII
                       CONDUCT OF RESEARCH AND DEVELOPMENT

         7.1 RESEARCH AND  DEVELOPMENT  PROGRAM.  (a)  Sheffield  shall  provide
(directly or through  independent  contractors)  such  research and  development
services as may  reasonably  be required by the Company and as  described in the
R&D Program,  such services to be paid for by the Company at  Sheffield's  fully
burdened  costs plus [text  omitted]  (the  "Cost").  The R&D  Program  shall be
directed by the Steering  Committee.  Sheffield  shall,  in accordance  with the
terms and conditions set forth in this Agreement,  undertake reasonably diligent
efforts,  as would  be  deemed  commensurate  with  the  achievement  of its own
business aims for a similar product of its own, to conduct the R&D Program;  and
further, shall maintain the facilities used by it for the performance of the R&D
Program in  compliance  with the  applicable  requirements  of the FDA and other
regulatory authorities.

         (b) The Company may  evaluate  the reports and other data  furnished by
Sheffield for the purpose of deciding whether or not to proceed with all or part
of the applicable R&D Program.

         (c) The  Company  shall  make no  filings  with  the FDA or  equivalent
foreign  regulatory  body without the approval of each of the EIS Director's and
the Sheffield Directors' nominees to the Steering Committee.

         7.2  RESEARCH  BUDGET;  RECORD  KEEPING.  (a)  Sheffield,  EIS, and the
Company  shall  agree on a  budget  to be  implemented  in  connection  with the
activities  to be  undertaken  during  the R&D  Program  for the  Initial  Term;
thereafter the Parties shall agree on a budget in connection with the activities
to be undertaken during the R&D Program subsequent to the Initial Term .

         (b) Sheffield will keep accurate records, consistent with good business
practices,


                                       10
<PAGE>

of the efforts expended by it under the R&D Program for which it is charging the
Company,  which will include  estimates of time spent by each person  working on
the R&D Program.

         (d)  Sheffield   shall  permit  the  Company  or  its  duly  authorized
representative,  on reasonable  notice and at any reasonable  time during normal
business  hours,  to have access to inspect and audit its  accounts  and records
relating to the calculation of the Cost of the R&D Program or, where applicable,
for the  supply  of the  Products,  and to the  accuracy  of the  reports  which
accompanied  them. Any such  inspection of  Sheffield's  records shall be at the
expense  of  the  Company;  except,  that  if any  such  inspection  reveals  an
overpayment by the Company in the amount of the Costs allocated by Sheffield for
the R&D Program in any calendar quarter of 5% or more of the amount of the Costs
actually  incurred by Sheffield  hereunder,  then the expense of such inspection
shall be borne solely by Sheffield instead of by the Company.

                                  ARTICLE VIII
                          PATENTS; REGULATORY APPROVALS

         8.1 REGULATORY APPROVALS.  The rights and obligations of the Parties in
respect  of  seeking  regulatory   approvals  are  governed  by  the  applicable
provisions  of each of the Elan  License  Agreement  and the  Sheffield  License
Agreement, respectively.

                                   ARTICLE IX
                          INTELLECTUAL PROPERTY RIGHTS

         9.1  INTELLECTUAL  PROPERTY  RIGHTS.  The rights and obligations of the
Parties in respect of any  intellectual  property are governed by the applicable
provisions  of  each  of  the  Elan  License  Agreement  and  Sheffield  License
Agreement, respectively.

                                    ARTICLE X
                        TECHNICAL SERVICES AND ASSISTANCE

         10.1 OTHER SERVICES. Sheffield shall provide such other services as the
Company may reasonably require,  other than those specifically dealt with in the
Sheffield License Agreement, such services to be paid for at Cost.

         10.2  ADMINISTRATIVE   SUPPORT.  The  Company  shall,  if  appropriate,
conclude an administrative support agreement with Sheffield on such terms as the
parties  thereto  shall in good faith  negotiate.  The  administrative  services
required  include,  but are not limited to, one or more of the following,  which
may be requested by the Company:

         (i) accounting, financial and other services;

         (ii) tax services;

                                       11
<PAGE>
         (iii) insurance services;

         (iv) human resources services;

         (v) legal and company secretarial services;

         (vi) patent and related intellectual property services; and

         (vii) all such other services  consistent  with and of the same type as
those services to be provided pursuant to this Agreement, as may be required.

                                   ARTICLE XI
                                 INDEMNIFICATION

         11.1 INDEMNIFICATION.  In addition to all rights and remedies available
to the parties hereunder at law or in equity, each Party (each in such capacity,
an "Indemnifying Party") shall indemnify each other Party and each other Party's
stockholders,   officers,   directors,   employees,   agents,   representatives,
successors and assigns  (collectively,  the "Indemnified  Person"), and save and
hold the  Indemnified  Person  harmless from and against and pay on behalf of or
reimburse each such Indemnified  Person,  as and when incurred,  for any and all
loss,  liability,   demand,  claim,  action,  cause  of  action,  cost,  damage,
deficiency,  tax,  penalty,  fine or expense,  whether or not arising out of any
claims by or on behalf of such Indemnified Person or any third party,  including
interest,  penalties,  reasonable  attorneys'  fees and expenses and all amounts
paid  in   investigation,   defense  or  settlement  of  any  of  the  foregoing
(collectively,  "Losses"),  that any such Indemnified Person may suffer, sustain
incur or become  subject  to, as a result of, in  connection  with,  relating or
incidental to or by virtue of:

         (a) any material misrepresentation or breach of warranty on the part of
the Indemnifying Party under Article 2 of this Agreement; or

         (b) any material  nonfulfillment,  default or breach of any covenant or
agreement  on the  part  of the  Indemnifying  Party  under  Article  V of  this
Agreement; or

         (c) any material  nonfulfillment,  default or breach of any covenant or
agreement under the other Transaction Documents.

         11.2 RECOVERY LIMITATION. Notwithstanding anything in this Agreement to
the contrary,  in no event shall Sheffield be liable for  indemnification  under
this Article XI, the Transaction Documents,  or otherwise in an amount in excess
of $[text omitted],  in the aggregate.  An Indemnified Person shall not assert a
claim  hereunder  unless the Losses,  when  aggregated  with all previous Losses
hereunder,  equal or exceed $50,000; and after the $50,000 threshold is reached,
each  indemnified  person shall be entitled to be indemnified  for the amount of
all claims arising hereunder in excess of $50,000.

                                       12
<PAGE>
         11.3  EXCEPTION.  Notwithstanding  the  foregoing,  and  subject to the
following  sentence,  upon  judicial  determination  that is final and no longer
appealable,  that the act or  omission  giving rise to the  indemnification  set
forth  above  resulted  primarily  out  of  or  was  based  primarily  upon  the
Indemnified Person's negligence (unless such Indemnified Person's negligence was
based  upon the  Indemnified  Person's  reliance  in good  faith upon any of the
representations,  warranties,  covenants  or promises  made by the  Indemnifying
Party  herein)  or  willful  misconduct,  the  Indemnifying  Party  shall not be
responsible for any Losses sought to be indemnified in connection therewith, and
the Indemnifying  Party shall be entitled to recover from the Indemnified Person
all amounts  previously paid in full or partial  satisfaction of such indemnity,
together with all costs and expenses  (including  reasonable  attorneys fees) of
the Indemnifying  Party  reasonably  incurred in connection with the Indemnified
Party's  claim  for  indemnity,  together  with  interest  at the rate per annum
publicly  announced by Morgan  Guaranty Trust Company as its prime rate from the
time of payment of such amounts to the Indemnified Person until repayment to the
Indemnifying Party.

         11.4 INVESTIGATION.  All indemnification rights hereunder shall survive
the  execution  and  delivery  of this  Agreement  and the  consummation  of the
transactions  contemplated  hereby to the extent provided in Section 11.1 above,
irrespective of any investigation,  inquiry or examination made for or on behalf
of,  or any  knowledge  of the  Indemnified  Person  or  the  acceptance  of any
certificate or opinion.

         11.5  CONTRIBUTION.  If the  indemnity  provided for in this Article XI
shall be,  in whole or in part,  unavailable  to any  Indemnified  Person,  as a
result of Section  11.1 being  declared  unenforceable  by a court of  competent
jurisdiction  based upon reasons of public policy, so that Section 11.1 shall be
insufficient  to hold each such  Indemnified  Person  harmless  from Losses that
would otherwise be indemnified  hereunder,  then the Indemnifying  Party and the
Indemnified  Person shall each contribute to the amount paid or payable for such
Loss in such  proportion  as is  appropriate  to reflect  not only the  relative
benefits received by the Indemnifying  Party on the one hand and the Indemnified
Person on the other, but also the relative fault of the  Indemnifying  Party and
be in addition to any liability that the Indemnifying  Party may otherwise have.
The  indemnity,  contribution  and expense  reimbursement  obligations  that the
Indemnifying  Party has under this  Article XI shall  survive the  Closing.  The
parties  hereto  further  agree  that  the   indemnification  and  reimbursement
commitments  set  forth  in  this  Agreement  shall  apply  whether  or not  the
Indemnified  Person  is a  formal  part to any  such  lawsuit,  claims  or other
proceedings.

         11.6 CLAIM  LIMITATION.  No claim  shall be  brought by an  Indemnified
Person in  respect of any  misrepresentation  or breach of  warranty  under this
Agreement or the other  Transaction  Documents after one year from and after the
date hereof; and any claim for nonfulfillment, default or breach of any covenant
shall be  brought  within one year of the date of that such  Indemnified  Person
became  aware or should  have  become  aware of the  nonfulfillment,  default or
breach,  unless  written  notice  thereof shall have been provided prior to such
one-year  period,  in which case such surviving claims shall be limited to those
in such notice. Except as set forth in the previous sentence, this Article XI is
not  intended to limit the rights or remedies


                                       13
<PAGE>

otherwise  available to any party  hereto with respect to this  Agreement or the
Transaction Documents.

                                   ARTICLE XII
                                   TERMINATION

         12.1 GENERAL.  The Company  shall  continue to operate and exist for so
long as its shareholders  shall determine,  and this Agreement shall govern such
operation and existence  until this Agreement  shall be terminated in accordance
with  this  Article  XII  (the  "Term").  Notwithstanding  the  foregoing,  this
Agreement may be terminated by either EIS or Sheffield in the case of a Relevant
Event (as defined below) or a material breach, on the part of the other.

         12.2 RELEVANT  EVENT.  For the purpose of this Article XII, a "Relevant
Event" is committed by a Party if:

         (a) it  commits  a  material  breach  of  its  obligations  under  this
Agreement and fails to remedy it within 60 days of being  specifically  required
in writing to do so by the other Party; provided, however, that if the breaching
party has  proposed  a course of action to  rectify  the breach and is acting in
good  faith to rectify  same but has not cured the breach by the 60th day,  such
rectifying  period  shall be  extended  by an  amount  of time as is  reasonably
necessary to permit the breach to be rectified;

         (b) it ceases, wholly or substantially, to carry on its business, other
than for the purpose of a reorganization;

         (c) the voluntary appointment of a liquidator, receiver, administrator,
examiner, trustee or similar officer over all or substantially all of its assets
under the laws of such Party's country of incorporation;

         (d)  a  petition  for  bankruptcy  or  seeking  liquidation,  corporate
reorganization,  administration,  winding up or relief of debtors  under any law
relating to bankruptcy or  insolvency or any other  procedure  similar to any of
the foregoing under the laws of such Party's state or country of  incorporation,
is filed, and is not discharged within 90 days.

                                  ARTICLE XIII
                                 CONFIDENTIALITY

         13.1  CONFIDENTIALITY.  (a) Each of the Parties acknowledge that it may
be  necessary,  from time to time, to disclose to one another  confidential  and
proprietary  information,  including without  limitation,  inventions,  the Elan
Intellectual Property, the Sheffield Intellectual Property, works of authorship,
trade secrets,  specifications,  designs,  data, know-how and other information,
relating to the intellectual  property rights under the License Agreements,  the
terms of the various  agreements between the Parties,  the Products,  processes,
and  services,  of  the  disclosing  Party  ("Confidential  Information").

                                       14

<PAGE>

         (b) Confidential Information shall be deemed not to include:

            (i) information that is in the public domain;

            (ii) information which is made public by the disclosing Party;

            (iii)  information  which  is  independently  developed  by a  Party
without the aid or application of the Confidential Information;

            (iv) information that is published or otherwise  becomes part of the
public domain  without any  disclosure  by a Party,  or on the part of a Party's
directors, officers, agents, representatives or employees;

            (v)   information   that   becomes   available   to  a  Party  on  a
non-confidential basis, whether directly or indirectly, from a source other than
another Party, which source, to the best of the receiving Party's knowledge, did
not acquire this information on a confidential basis; or

            (vi)  information  which will become  public  because the  receiving
Party is required to disclose pursuant to:

                  (A) a valid order of a court or other governmental body or any
political subdivision thereof or otherwise required by law; or

                  (B) other  requirement of law;  provided that if the receiving
Party becomes legally  required to disclose any  confidential  information,  the
receiving  Party shall give the  disclosing  Party prompt notice of such fact so
that the  disclosing  Party may obtain a protective  order or other  appropriate
remedy  concerning  any  such  disclosure.   The  receiving  Party  shall  fully
co-operate with the disclosing  Party in connection with the disclosing  Party's
efforts  to obtain any such  order or other  remedy.  If any such order or other
remedy does not fully preclude  disclosure,  the receiving Party shall make such
disclosure only to the extent that such disclosure is legally required. 

         13.2 Any Confidential  Information revealed by a Party to another Party
shall be used by the receiving  Party  exclusively for the purpose of fulfilling
the receiving Party's obligations under this Agreement and for no other purpose.

         13.3 Each of the Parties agrees to disclose Confidential Information of
another  Party only to those  employees,  representatives  and agents  requiring
knowledge  thereof in  connection  with  their  duties  directly  related to the
fulfilling of the Party's obligations under this Agreement.  Each of the Parties
further agrees to inform all such employees,  representatives  and agents of the
terms and provisions of this Agreement and their duties  hereunder and to obtain
their consent hereto as a condition of receiving Confidential Information.  Each
of the Parties  agrees that it will exercise the same degree of care,  but in no
event less than a reasonable  degree, and protection to preserve the proprietary
and  confidential  nature  of  the  Confidential   Information  disclosed  by  a
Participant,  as  the 

                                       15

<PAGE>
 receiving  Party  would  exercise  to  preserve  its  own
proprietary  and  confidential  information.  Each of the Parties agrees that it
will,  upon  request of a Party,  return all  documents  and any copies  thereof
containing  Confidential  Information  belonging to or disclosed by, such Party;
except,  that one copy of any returned  files may be retained in the legal files
of the returning party.

         13.4  Notwithstanding  the  above,  each  Party  may  use  or  disclose
confidential information disclosed to it by another Party to the extent such use
or  disclosure  is  reasonably   necessary  in  filing  or  prosecuting   patent
applications,   prosecuting  or  defending  litigation,  complying  with  patent
regulations,  prosecuting or defending  litigation,  complying  with  applicable
governmental  regulations  or otherwise  submitting  information to tax or other
governmental  authorities,  conducting  clinical trials, or granting a permitted
sub-license  or  otherwise  exercising  rights  hereunder  or under the  License
Agreement  (including the right to develop jointly owned technology  outside the
Field);  provided,  that if a Party is required to make any such  disclosure  of
another   Party's   confidential   information,   other  than   pursuant   to  a
confidentiality  agreement,  such disclosing  Party shall inform the other Party
thereof, and allow such other Party to participate in the disclosure process for
the purpose of generally limiting, to the extent possible, such disclosure.

         13.5 The  provisions  relating to  confidentiality  in this Clause XIII
shall remain in effect during the Initial Term,  and for a period of three years
following the expiration or earlier termination of this Agreement.

                                   ARTICLE XIV
                                  MISCELLANEOUS

         14.1  COSTS.  Each  Party  shall  bear its own legal  and  other  costs
incurred in relation to preparing and concluding  this Agreement and the related
agreements and other documents.  All costs,  legal fees,  registration  fees and
other  expenses,  including  the costs and expenses  incurred in relation to the
incorporation of the Company, shall be borne by the Company.

         14.2  INJUNCTIVE  RELIEF.  With  respect to Article  XIII  hereof,  the
Parties  hereby agree and  acknowledge  that it will be impossible to measure in
money the  damages  that  would be  suffered  if any  Party  should  breach  any
obligation, covenant or representation therein imposed or made, and that, in the
event of such breach, a non-breaching Party will be irreparably damaged and will
not  have an  adequate  remedy  at law.  Any  such  non-breaching  party  shall,
therefore, be entitled to injunctive relief, including specific performance,  to
enforce  such  obligations,  and if any  action  should be  brought in equity to
enforce any of the provisions of Article XIII,  none of the other Parties hereto
shall raise the defense that there is an adequate remedy at law.

         14.3 NOTICES.  All notices,  other communications or documents provided
for or  permitted to be given  hereunder,  shall be made in writing and shall be
given  either  personally  by  hand-delivery,  by  mailing  the same in a sealed
envelope, certified first-class mail, postage prepaid, return receipt requested,
or by an internationally recognized overnight delivery service:
                                       16

<PAGE>

                  (i) if to the Company, to:

                  Systemic Pulmonary Delivery, Ltd.
                  c/o Elan International Services, Ltd.
                  102 St. James Court
                  Flatts, Smiths Parish FL04
                  Bermuda

                  and

                  Systemic Pulmonary Delivery, Ltd.
                  c/o Sheffield Pharmaceuticals, Inc.
                  37 South Main Street
                  Pittsford, New York  14534
                  Attn: Chairman

                  with a copy to Brock  Silverstein  McAuliffe  LLC,  and Olshan
Grundman Frome & Rosenzweig LLP, at the respective addresses indicated below;

                  (ii) if to Sheffield, to:

                  Sheffield Pharmaceuticals, Inc.
                  37 South Main Street
                  Pittsford, New York  14534
                  Attn: Chairman

      and

                  Sheffield Pharmaceuticals, Inc.
                  425 South Woodsmill Road
                  St. Louis, Missouri 63017-3441
                  Attention: Chief Executive Officer

                  with a copy to:

                  Olshan Grundman Frome & Rosenzweig LLP
                  505 Park Avenue
                  New York, NY  10022
                  Attention: Daniel J. Gallagher

                  (ii) if to EIS, to:

                                       17

<PAGE>
                  Elan International Services, Ltd.
                  Flatts Smiths SL04
                  Bermuda
                  Attention: Director

                  with a copy to:

                  Brock Silverstein McAuliffe LLC
                  153 East 53rd Street , 56th Floor
                  New York, New York 10022
                  Attention: David Robbins

         Each Party,  by written notice given to the Company in accordance  with
this Section 14.3 may change the address to which notices,  other  communication
or documents are to be sent to such Party. All notices,  other communications or
documents  shall be  deemed  to have been duly  given  when  received.  Whenever
pursuant  to this  Agreement  any notice is required to be given by any Party to
any other Party,  such Party may request from the Company a list of addresses of
all Parties, which list shall be promptly furnished to such Party.

         14.4  ASSIGNMENT.  EIS may assign this Agreement to an Affiliate at any
time.  Sheffield  may assign this  Agreement  to an  Affiliate  with the written
consent of EIS, which shall not be unreasonably withheld or delayed.

         14.5 GOVERNING  LAW. This Agreement  shall be governed by and construed
in  accordance  with the laws of the  state of New York  without  regard  to the
principle of conflicts of laws thereof.  Each of the parties hereby  irrevocably
submits to the jurisdiction of any New York State or United States Federal court
sitting in the county,  city and state of New York over any action or proceeding
arising out of or relating to this agreement or the other Transaction Documents;
and each hereby waives the defense of an inconvenience forum for the maintenance
of such an action.

         14.6  HEADINGS.  The  headings  in  this  Agreement  are  inserted  for
convenience of reference only and shall not constitute a part of this Agreement.

         14.7 SEVERABILITY.  In the event that any one or more of the provisions
contained  herein,  or the  application  thereof  in any  circumstance,  is held
invalid, illegal or unenforceable,  the validity, legality and enforceability of
any such  provision  in every  other  respect  and of the  remaining  provisions
contained herein shall not be affected or impaired thereby.

         14.8  AMENDMENTS  AND WAIVER.  No  provision of this  Agreement  may be
amended,  nor  performance  of any  covenant or  agreement  waived,  except by a
written instrument executed by each of the Company, EIS and Sheffield. Neither a
failure  nor a delay in  exercising  any right,  power or  privilege  of a Party
hereunder shall operate as a waiver of, or a consent to the


                                       18
<PAGE>

modification  of, the terms hereof  unless  given by that Party in writing.  The
waiver by any Party hereto of a breach of any provision of this Agreement  shall
not operate or be construed as a waiver of any preceding or succeeding breach.

         14.9  COUNTERPARTS.  This  Agreement  may be  executed  in two or  more
counterparts,  each of which shall be deemed an  original  and all of which when
taken together shall constitute one and the same Agreement.

         14.10  ENTIRE  AGREEMENT.  This  Agreement  and the  other  Transaction
Documents  contain the entire  understanding  of the Parties with respect to the
subject  matter  hereof and supersede all prior  agreements  and  understandings
among the Parties with respect thereto.  No provision of this Agreement shall be
construed  so as to negate,  modify or affect in any way the  provisions  of any
other agreement between any of the Parties unless specifically  referred to, and
solely to the extent provided,  in any such other  agreement.  In the event of a
conflict between the provisions of this Agreement and the provisions of the Elan
License  Agreement,   the  Sheffield  License  Agreement,  or  the  SPD  License
Agreement, the terms of this Agreement shall prevail.

         14.11 GOOD FAITH. Each of the Parties hereto undertakes with the others
to do all things reasonably within its power which are necessary or desirable to
give effect to the spirit and intent of this Agreement.

         14.12 FURTHER ASSURANCE.  The Parties hereto shall use their respective
reasonable  efforts to procure that any necessary  third party shall do, execute
and perform all such further deeds,  documents,  assurances,  acts and things as
any of the  Parties  hereto may  reasonably  require by notice in writing to the
others to carry the provisions of this Agreement into full force and effect.  In
addition,  each  of EIS  and  Sheffield  shall  cooperate  and  make  reasonably
available to the Company  (including its authorized agents and  representatives)
all  assistance  reasonably  necessary or  appropriate  to enable the Company to
prepare,  file,  prosecute and maintain Patents or other  intellectual  property
related to the Elan Intellectual Property and Sheffield  Intellectual  Property.
This Section 14.12 shall survive  indefinitely  beyond the  termination  of this
Agreement;  provided that  following  termination of this  Agreement,  Sheffield
shall be entitled to reimbursement of expenses required for compliance with this
section in excess of $10,000 per annum.





                            [Signature page follows]


                                       19

<PAGE>

         IN WITNESS  WHEREOF,  the parties hereto have executed this Development
Agreement as of the date first set forth above.

                                         SYSTEMIC PULMONARY DELIVERY, LTD.



                                         By: /s/ Thomas M. Fitzgerald
                                             -------------------------
                                         Name:  Thomas M. Fitzgerald
                                         Title: Chairman

                                         ELAN INTERNATIONAL SERVICES, LTD.



                                         By: /s/ Kevin Insley
                                             --------------------
                                         Name:  Kevin Insley
                                         Title: President

                                         SHEFFIELD PHARMACEUTICALS, INC.


                                         By: /s/ Thomas M. Fitzgerald
                                             ---------------------------
                                         Name:  Thomas M. Fitzgerald
                                         Title: Chairman

                                    CERTAIN  PORTIONS HAVE BEEN OMITTED BASED ON
                                    A  REQUEST   FOR   CONFIDENTIAL   TREATMENT;
                                    OMITTED  PORTIONS FILED  SEPARATELY WITH THE
                                    SECURITIES AND EXCHANGE COMMISSION


                        LICENSE AND DEVELOPMENT AGREEMENT



                                 BY AND BETWEEN



                         SHEFFIELD PHARMACEUTICAL, INC.
                             A Delaware Corporation



                                       AND



                        SYSTEMIC PULMONARY DELIVERY, LTD.
                                A Bermuda Company



                                       AND



                              ELAN CORPORATION, plc
                                An Irish Company





                This Agreement is made the 30th day of June 1998



<PAGE>



                                TABLE OF CONTENTS


1.    ARTICLE I : DEFINITIONS..................................................1


2.    ARTICLE II :  THE LICENSE................................................6


3.    ARTICLE III:  WARRANTY AND INDEMNITY.....................................8


4.    ARTICLE IV:   PATENTS...................................................12


5A.   ARTICLE VIII(A):  REGARDING THE SHEFFIELD INTELLECTUAL PROPERTY.........14


5.    ARTICLE V:  MISCELLANEOUS CLAUSES.......................................15







<PAGE>


LICENSE AND DEVELOPMENT Agreement, dated June 30, 1998, by and between Sheffield
Pharmaceutical,  Inc., a Delaware corporation ("Sheffield"),  Systemic Pulmonary
Delivery,  Ltd., a Bermuda  corporation  ("Newco") and Elan Corporation plc., an
Irish corporation ("Elan").

                                    RECITALS
                                    --------

            A.        Sheffield  owns,  controls and/or has rights in and to the
Sheffield  Intellectual  Property  (capitalized  terms used  herein are  defined
below), and

            B.        Elan  is  beneficially  entitled  to the  use  of  various
patents,  including  the Elan  Patent  Rights,  which  have been  granted or are
pending under the  International  Convention in relation to the  development and
production of drug delivery devices and processes, and

            C.        Elan has agreed to enter into the Elan  License  Agreement
provided that Sheffield and Newco enter into this Agreement, and

            D.        Newco is  entering  into  this  Agreement  with  Sheffield
pursuant to which Newco  shall have the right to  manufacture  and to market the
Products in the Territory, and

            E.        Sheffield   is   prepared   to   license   the   Sheffield
Intellectual Property in the Territory to Newco.

                  NOW THEREFORE, The Parties agree as follows:

1.     ARTICLE I:  DEFINITIONS
       -----------------------


          1.1.    In the present  Agreement  and any further  agreements  based
thereon between the Parties hereto, the following definitions shall apply:


                   "Affiliate" shall mean any corporation or entity controlling,
                   controlled by or under the common control of Sheffield, Newco
                   or  Elan,  as the  case  may  be.  For  the  purpose  of this
                   Agreement,  "control"  shall  mean  the  direct  or  indirect
                   ownership  of at  least  twenty-five  (25%)  percent  of  the
                   outstanding  shares or other  voting  rights  of the  subject
                   entity to elect  directors,  or if not meeting the  preceding
                   criteria,  any  entity  owned or  controlled  by or owning or
                   controlling  at  the  maximum   control  or  ownership  right
                   permitted in the country where such entity exists.

                   "Agreement" shall mean this agreement (which expression shall
                   be deemed to include the Recitals and Appendices hereto).


                                       2
<PAGE>

                   "cGCP",  "cGLP" and "cGMP" shall mean  current Good  Clinical
                   Practices, current Good Laboratory Practices and current Good
                   Manufacturing Practices respectively.

                   "Confidential  Information"  shall have the meaning set forth
                   in Article 5.1 below.

                   "Definitive  Documents"  shall mean this Agreement,  the Elan
                   License Agreement, the Newco/Sheffield License Agreement, and
                   any other documents or agreements executed in connection with
                   the transactions contemplated hereunder and thereunder.

                   "Effective Date" shall mean June 30, 1998.

                   "Elan"  shall  mean  Elan  Corporation,  plc  and  any of its
                   Affiliates.

                   "Elan   License   Agreement"   shall  mean  the  License  and
                   Development Agreement,  dated even date herewith, among Elan,
                   Newco and  Sheffield  pursuant to which,  among other things,
                   Elan is  licensing  to Newco the Elan  Know-How  and the Elan
                   Patent Rights in accordance  with the terms and conditions of
                   said agreement.

                   "FDA"   shall   mean  the   United   States   Food  and  Drug
                   Administration or any other successor agency,  whose approval
                   is necessary  to market the Products in the United  States of
                   America.

                   "Field" shall mean the Systemic Pulmonary Field.

                   "Joint  Intellectual  Property" shall mean the Joint Know-How
                   and/or the Joint Patent Rights.

                   "Joint  Know-How"  shall mean all knowledge,  information and
                   expertise  developed  by at least  two of the  three  Parties
                   during the Term relating to the Field and in accordance  with
                   the Project whether or not covered by any patent,  copyright,
                   design,   trademark  or  other   industrial  or  intellectual
                   property rights.

                   "Joint  Patent  Rights"  shall  mean any  patent  and  patent
                   applications  created,  developed,   conceived  or  otherwise
                   invented by at least two of the three Parties pursuant to the
                   Agreement,  relating to the Field, and in accordance with the
                   Project.  Joint Patent Rights shall also include  extensions,
                   continuations, continuations-in-part, divisionals, patents of
                   additions, reexaminations, re-issues supplementary protection
                   certificates  and foreign  counterparts  of such  patents and
                   patent  applications  and any  patents  issuing  thereon  and
                   extensions of any patents licensed hereunder.

                                       2
<PAGE>


                   "Marketing  Authorization"  shall  mean  the  procurement  of
                   registrations  and permits required by applicable  government
                   authorities  in a country in the Territory for the marketing,
                   sale, and distribution of a Product in such country.

                   "MSI  Delivery   System"shall  mean  Sheffield's  multi  dose
                   nebulizer  comprising  a device and  dosator  that  generally
                   conforms  to the  specifications  in  Annex 2 to the  Siemens
                   Supply  Agreement  for use with  medicines  for the  systemic
                   treatment of diseases,  and improvements  thereto,  excluding
                   the use of  medicines  for  humans  in  treating  respiratory
                   disease and/or other lung disease,  which exclusion includes,
                   but is not limited to, the use of anti-infectives.

                   "Newco" shall mean Systemic Pulmonary Delivery,  Ltd. and any
                   of its Affiliates.

                   "Newco  Intellectual  Property" shall mean the Newco Know-How
                   and/or the Newco Patent Rights.

                   "Newco Know-How" shall mean all knowledge, information, trade
                   secrets, data and expertise, or from time to time, developed,
                   invented  or  otherwise  acquired  by or on  behalf  of Newco
                   during  the  Term,  including  without  limitation,  the ADDS
                   Technology,   the  Trademark,  Newco  Project  Know-How,  and
                   clinical data and test results, whether or not covered by any
                   patent,  copyright,  design, trademark or other industrial or
                   intellectual property rights.

                   "Newco/Sheffield  License  Agreement"  shall mean the License
                   Agreement,  dated even date herewith,  among Newco, Sheffield
                   and  Elan   pursuant  to,  among  other   things,   Newco  is
                   sublicensing   certain   intellectual   property  rights  and
                   know-how  to  Sheffield  in  accordance  with the  terms  and
                   conditions of said agreement.

                   "Newco  Patent  Rights"  shall  mean all  patents  and patent
                   applications  owned or to be owned by, or  licensed  or to be
                   licensed by Newco. Newco Patent Rights shall also include all
                   extensions,       continuations,       continuations-in-part,
                   divisionals, patents in addition, reexaminations,  re-issues,
                   supplementary    protection    certificates    and    foreign
                   counterparts of such patents and patent  applications and any
                   patents   issuing  thereon  and  extensions  of  any  patents
                   licensed hereunder. Newco Patent Rights shall further include
                   any  patents or patent  applications  covering  any  improved
                   Products or improved  methods of making or using the Products
                   invented or acquired by Newco  during the Term (and shall for
                   the  avoidance  of doubt  include  the Newco  Project  Patent
                   Rights and such  patent and patent  applications  relating to
                   the ADDS Technology).

                   "Newco   Project   Know-How"   shall   mean  all   knowledge,
                   information, trade secrets, data and expertise which is owned
                   or to be  developed  by or on behalf  of Newco in  connection
                   with the Project relating to the Products, including clinical
                   data,  whether  or  not  covered  by any  patent,  copyright,
                   design,   trademark  or  other   industrial  or  intellectual
                   property rights.


<PAGE>

                   "Newco  Project  Patent  Rights"  shall  mean any  patents or
                   patent applications covering any improved Products or methods
                   of making or using the  Products,  invented or acquired by or
                   on behalf of Newco in connection with the Project.

                   "Party"  shall mean Newco,  Sheffield or Elan as the case may
                   be.  "Parties"  shall  mean any two of Newco,  Sheffield  and
                   Elan.

                   "Plan"   shall  mean  the   business   plan  and  program  of
                   development agreed to by the Parties and attached to the Elan
                   License   Agreement  as  Appendix  B,  with  respect  to  the
                   research,  development,  prosecution and commercialization of
                   the Products.

                   "Products"  shall mean all devices and  products or any parts
                   or components thereof (including, without limitation, any and
                   all compounds and/or drug products  delivered with, by and/or
                   via the  Products)  that are used,  developed,  manufactured,
                   offered for sale and/or sold by or on behalf of Newco  and/or
                   its permitted  sublicensees,  and that utilize,  incorporate,
                   apply  and/or  are  based  on  the   Sheffield   Intellectual
                   Property,  the Newco Intellectual  Property,  and/or the Elan
                   Intellectual Property.

                   "Project"  shall mean all  activity  as  undertaken  by Elan,
                   Sheffield  and  Newco in order to  develop  the  Products  in
                   accordance with the Plan.

                   "Sheffield"  shall mean  Sheffield  Pharmaceutical,  Inc.,  a
                   Delaware corporation.

                   "Sheffield  Intellectual  Property"  shall mean the Sheffield
                   Know-How and/or the Sheffield Patent Rights.

                   "Sheffield  Know-How" shall mean all knowledge,  information,
                   trade  secrets,  data and expertise  relating to the Systemic
                   Pulmonary Field,  other than compounds,  that is possessed by
                   Sheffield,  or from time to time,  developed or invented (but
                   not  acquired) by or on behalf of  Sheffield  during the Term
                   relating  to  the  Systemic  Pulmonary  Field  for  use  with
                   medicines  for  the  systemic   treatment  of  diseases  (but
                   excluding  the  use  of  medicines  for  humans  in  treating
                   respiratory disease and/or other lung disease, including, but
                   not  limited  to,  the  use of  anti-infectives),  including,
                   without  limitation,  clinical data, the MSI Delivery  System
                   and the Sheffield Project Know-How, whether or not covered by
                   any patent, copyright,  design, trademark or other industrial
                   or intellectual property rights.

                   "Sheffield  Patent  Rights" shall mean all patents and patent
                   applications  related to the Systemic  Pulmonary Field, other
                   than  compounds,  owned by or  licensed  by or on behalf,  of
                   Sheffield,  which  patents as of the  Effective  Date are set
                   forth on Appendix A, attached hereto. Sheffield Patent Rights
                   shall   also   include   all    extensions,    continuations,
                   continuations-in-part,   divisionals,  patents  of  addition,
                   re-issues,     re-examinations    supplementary    protection
                   certificates  and foreign  

                                       4
<PAGE>


                   counterparts of such patents and patent  applications and any
                   patents   issuing  thereon  and  extensions  of  any  patents
                   licensed  hereunder  (and  shall for the  avoidance  of doubt
                   include patents and patent  applications  relating to the MSI
                   Delivery System and the Sheffield Patent Project Rights).

                   "Sheffield   Project  Know-How"  shall  mean  all  knowledge,
                   information,  trade  secrets,  data  and  expertise  which is
                   possessed  or  developed  by or on  behalf  of  Sheffield  in
                   connection  with the  Project  relating  to the Field for use
                   with  medicines  for the systemic  treatment of diseases (but
                   excluding  the  use  of  medicines  for  humans  in  treating
                   respiratory disease and/or other lung disease including,  but
                   not limited to, the use of anti-infectives),  including,  but
                   not limited to, clinical data,  whether or not covered by any
                   patent,  copyright,  design, trademark or other industrial or
                   intellectual property rights.

                   "Sheffield  Project  Patent Rights" shall mean any patents or
                   patent applications covering any improved Products or methods
                   of making or using the  Products,  invented or acquired by or
                   on behalf of Sheffield in connection  with the Project during
                   the Term.

                   "Siemens"  shall mean Siemens  Aktiengesellschaft,  a company
                   organized under the laws of Germany.

                   "Siemens License Agreement" shall mean the License Agreement,
                   dated February 21, 1997, between Sheffield and Siemens.

                   "Siemens  Supply  Agreement"  shall  mean  the  Basic  Supply
                   Agreement  dated  March  21,  1997,   between  Sheffield  and
                   Siemens.

                   "Steering  Committee" shall have the meaning set forth in the
                   Newco  Development  Agreement,   dated  even  date  herewith,
                   between Sheffield and EIS.

                   "Systemic   Pulmonary  Field"  shall  mean  the  practice  of
                   delivering  therapeutic  entities  via  the  lung,  with  the
                   primary intention of making them systemically available.

                   "Term" shall have the meaning set forth in Article 5.5 below.

                   "Territory" shall mean all of the countries of the world.

                   "Topical   Pulmonary   Field"  shall  mean  the  practice  of
                   delivering respiratory therapeutic entities via the lung with
                   the  primary  intention  of making them  available  for local
                   respiratory therapeutic effect on the lung.

                   "Trademark" shall mean the trademark(s) as may be selected by
                   Newco which has been or may be  registered by Newco in one or
                   more countries in the Territory.

                                       5
<PAGE>

                   "$" shall mean United States Dollars.

                   The following  terms shall have the meanings set forth in the
                   Elan License Agreement: Elan Improvements,  Elan Intellectual
                   Property, Elan Know-How, and Elan Patent Rights.

          1.2.     Interpretation. In this Agreement, the following shall apply:

                   1.2.1.   the singular includes the plural and vice versa, the
masculine includes the feminine and vice versa and references to natural persons
include corporate bodies, partnerships and vice versa;

                   1.2.2.   any  reference  to an  Article  or  Appendix  shall,
unless  otherwise  specifically  provided,  be to a Article or  Appendix of this
Agreement; and

                   1.2.3.   the  headings  of this  Agreement  are  for  ease of
reference only and shall not affect its construction or interpretation.

2.    ARTICLE II :  THE LICENSE
      -------------------------


          2.1.      Subject to the terms and  conditions  of this  Agreement and
the rights of Elan under the Definitive  Documents,  Sheffield  hereby grants to
Newco for the Term,  and Newco  hereby  accepts,  an  exclusive,  royalty  free,
sublicense of the Sheffield  Intellectual Property for the Territory to develop,
make, have made, manufacture,  have manufactured,  package, use, import, export,
promote, distribute,  market, offer for sale, and sell the Products in the Field
in the  Territory.  Elan shall have the right to cause Newco to enforce  Newco's
rights against Sheffield hereunder.

                    2.1.1.  Except for an  assignment  or  sublicense to Elan in
accordance  with this  Agreement  and the  Definitive  Documents,  Newco may not
assign or sublicense  the licenses and rights  granted to it herein  without the
prior written approval of Sheffield and Elan, which approval may be withheld for
any reason whatsoever.  Subject to Elan's rights under the Definitive Documents,
Sheffield shall be entitled to use the Sheffield  Intellectual  Property and all
technical  and clinical  data or  improvements  thereto in  connection  with (i)
Sheffield's commercial  arrangements for the Products in any country that ceases
to be a part of the  Territory,  or in relation to the  Products in a country in
the  Territory  in the event of the  expiration  or sooner  termination  of this
Agreement,  or (ii) Sheffield's commercial  arrangements for products outside of
the Field. Such commercial arrangements referred to in the immediately preceding
sentence  shall  include  the right to  research,  develop,  manufacture,  sell,
license or otherwise  market the Products.  Notwithstanding  anything  contained
herein  to the  contrary,  during  the Term  (and for a period  of two (2) years
thereafter if Elan  acquires 100% of Newco's  Common Stock within five (5) years
from the Effective  Date),  Sheffield  shall not directly or indirectly  compete
with Newco in the Field,  and Sheffield  shall not participate in the ownership,
management,  operation  or control of, or act in any  advisory,  expert or other
capacity  for, any entity or  individual  that competes with Newco 

                                       7

<PAGE>

in the Field;  provided,  however, that upon Elan's acquisition of at least 100%
of Newco's Common Stock, Sheffield shall have the right to compete with Newco in
the Field with products  that are not based on or utilize the Elan  Intellectual
Property,  the Newco Intellectual Property, the Sheffield Intellectual Property,
and/or the Joint Intellectual Property.

          2.2.      Notwithstanding  anything contained in this Agreement to the
contrary,  Newco may without  the prior  approval  of  Sheffield,  enter into an
agreement with Elan to  manufacture,  package,  use,  import,  export,  promote,
distribute,  market,  offer for sale, and sell all Products  (including products
that utilize, incorporate,  apply and/or are based on the Sheffield Intellectual
Property) on such terms as Newco and Elan shall mutually agree.

          2.3.      Newco shall  market the  Products in the  Territory  under a
Trademark,  which  Trademark  will be owned by Newco  subject  to the  terms and
conditions of this Agreement.  2.4.  Sheffield hereby grants to Newco during the
Term a  non-exclusive  royalty free license in the Territory,  solely for use in
connection  with the  sale of the  Products,  to use  Sheffield's  trademark  or
trademarks,  on the following  terms:

                    2.4.1.  Newco  shall  as soon  as it  becomes  aware  of any
infringement  give  to  Sheffield  in  writing  full  particulars  of any use or
proposed use by any other  person,  firm or company of a trade name or trademark
or promotional or advertising activity which may constitute infringement.

                    2.4.2. If Newco becomes aware that any other person, firm or
company alleges that such trademark is invalid or that the use of such trademark
infringes  any  rights  of  another  party or that the  trademark  is  otherwise
attacked,  Newco shall immediately give to Sheffield full particulars in writing
thereof  and shall make no comment or  admission  to any third  party in respect
thereof.

                    2.4.3.  Sheffield  shall  have  the  right  to  conduct  all
proceedings  relating to such trademark and shall in its sole discretion  decide
what  action,  if  any,  to take  in  respect  of any  infringement  or  alleged
infringement  of such trademark or any other claim or  counter-claim  brought or
threatened in respect of the use or  registration  of such  trademark.  Any such
proceedings shall be conducted at Sheffield's expense and for its own benefit.

                    2.4.4.  Nothing  contained in this Agreement  shall grant to
Newco any right,  title,  or  interest in or to such  trademark,  whether or not
specifically recognized or perfected under applicable laws. At no time during or
after the Term shall Newco  challenge  or assist  others to  challenge  any such
trademark or the  registration  thereof or attempt to register  any  trademarks,
marks, or trade names confusingly similar to any such trademark. All displays of
any such  trademark  that Newco  intends to adopt  shall first be  submitted  to
Sheffield  for approval  (which shall not be  unreasonably  withheld) of design,
color,  and other details,  or shall be exact copies of those used by Sheffield.
In addition,  Newco shall fully comply with all reasonable  guidelines,  if any,
communicated  by Sheffield  concerning  the use of any such trademark as well as
all rules and regulations of such use throughout the Territory.

                                       7
<PAGE>

          2.5.      When packaged, and to the extent permitted by law, a product
label shall  include an  acknowledgement  that the Product is made under license
from Sheffield.  Such acknowledgement  shall take into consideration  regulatory
requirements  and  Newco's  reasonable  commercial  requirements.   Newco  shall
wherever possible give due  acknowledgement  and recognition to Sheffield in all
printed  promotional  and other  material  regarding the Product such as stating
that the  Product  is  under  license  from  Sheffield  and that the  applicable
Sheffield technology has been applied to the Products.  Newco shall consult with
and obtain the written approval of Sheffield as to the format and content of the
promotional  and other  material  insofar as it relates to a description  of, or
other reference to, the application of the Sheffield Intellectual Property, such
approval  not to be  unreasonably  withheld or delayed.  The further  consent of
Sheffield  shall not be required  where the format and content of such materials
is substantively  similar as the materials  previously furnished to and approved
in writing by Sheffield.

          2.6.      Newco  shall  cause  the  Products  that  relate  to the MSI
Delivery  System to be labled in accordance  with any obligation by Sheffield in
the  Siemens  License  Agreement  and in  accordance  with  applicable  laws and
regulations, including without limitation, 35 United States Code Section 287, as
the same may be amended from time to time.

3.     ARTICLE III:  WARRANTY AND INDEMNITY.
       -------------------------------------


          3.1.      Sheffield  represents , warrants and  covenants to Newco and
Elan as follows:

                    3.1.1.  Sheffield  is  duly  and  validly  existing  in  the
jurisdiction  of its  incorporation  and each  other  jurisdiction  in which the
conduct of its business requires such  qualification  (except where such failure
to so  qualify  shall not have a material  adverse  affect on the  business  and
assets of  Sheffield),  and is in compliance  with all applicable  laws,  rules,
regulations or orders relating to its business and assets;

                    3.1.2. Sheffield has full corporate authority to execute and
deliver this Agreement and to consummate the transactions  contemplated  hereby;
this Agreement has been duly executed and delivered by Sheffield and constitutes
the  legal  and  valid  obligations  of  Sheffield  and is  enforceable  against
Sheffield  in  accordance  with  its  terms;  and the  execution,  delivery  and
performance of this Agreement and the transactions  contemplated hereby will not
violate or result in a default  under or creation of lien or  encumbrance  under
Sheffield's  memorandum and articles of association or any material agreement or
instrument  binding upon or affecting  Sheffield or its  properties or assets or
any applicable laws,  rules,  regulations or orders  affecting  Sheffield or its
properties or assets;

                    3.1.3.   Sheffield  is  not  in  material   default  of  its
memorandum  and  articles  of  association,  any  applicable  material  laws  or
regulations or any material  contract or agreement  binding upon or affecting it
or its properties or assets and the execution,  delivery and performance of this
Agreement and the transactions  contemplated  hereby will not result in any such
violation;

                                        8

<PAGE>

                    3.1.4. As of the Effective  Date,  Sheffield is the sole and
exclusive owner or licensee of, or controls all right, title and interest to the
Sheffield Patent Rights; and to Sheffield's  knowledge and belief,  Sheffield is
the sole owner or licensee of the Sheffield Know-How. Sheffield has the right to
grant the licenses and sublicenses  granted herein. The Sheffield Patent Rights,
and to Sheffield's  knowledge and belief, the Sheffield  Know-How,  are free and
clear of any lien, encumbrances, security interest or restriction on the license
granted herein.  Sheffield will not grant during the Term, any right, license or
interest in and to the Sheffield  Intellectual Property, or any portion thereof,
inconsistent with the license and sublicense  granted herein; and to the best of
Sheffield's knowledge there are no pending or threatened adverse actions, suits,
investigations,  claims or  proceedings  brought  by one or more  third  parties
related to the Sheffield Intellectual Property as of Effective Date;

                    3.1.5.  The  Products  that  are  developed,   manufactured,
transported, stored, handled, packaged, marketed, promoted, distributed, offered
for sale and/or sold by Sheffield  shall be in  accordance  with all  applicable
regulations  and  requirements  of the FDA and  foreign  regulatory  authorities
including,  without  limitation,  cGCP,  cGLP,  cGMP  regulations  with  respect
thereto.  The Products  shall not be adulterated or misbranded as defined by the
Federal Food, Drug and Cosmetic Act (or applicable foreign law) and shall not be
a  product  which  would  violate  any  section  of such  Act if  introduced  in
interstate commerce;

                    3.1.6.  Sheffield  is  fully  cognizant  of  all  applicable
statutes,  ordinances  and  regulations  of the  United  States of  America  and
countries  in the  Territory  with  respect to the  manufacture  of the Products
including,  but not limited to, the U.S. Federal Food, Drug and Cosmetic Act and
regulations  thereunder and similar statutes in countries  outside of the United
States,  and cGMPs.  To the extent that Sheffield  manufactures  or procures the
manufacture  of the  Products,  such  manufacture  or  procurement  shall  be in
conformity  with  the  Marketing  Authorizations  and in a  manner  which  fully
complies  with all United  States of America and foreign  statutes,  ordinances,
regulations and practices;

                    3.1.7.  Sheffield represents and warrants that the execution
of this Agreement will not breach or in any way be  inconsistent  with the terms
and conditions of any license,  contract,  understanding  or agreement,  whether
express,  implied,  written  or oral  between  Sheffield  and any  third  party,
including without limitation, the Siemens License Agreement;

                    3.1.8.  Sheffield  and  Siemens  are  parties to the Siemens
License Agreement pursuant to which, among other things, Siemens is licensing to
Sheffield,  with  the  right  to  sublicense,  a  license  for the  manufacture,
distribution and sale the MSI Delivery System.  The Siemens License Agreement is
valid and in full  force and effect  and will  continue  to be valid and in full
force  and  effect  upon  completion  of the  transactions  contemplated  by the
Definitive Documents without any modifications. There are no existing or claimed
defaults by any party under the Siemens License  Agreement and no event,  act or
omission  has  occurred  which  (with or  without  notice,  lapse of time or the
happening or  occurrence of any other event) would result in a default under the
Siemens  License  Agreement.  Sheffield shall comply with all of its obligations
under the Siemen's License Agreement and shall promptly notify Elan and Newco of
any breach or event of default thereunder; and

                                       9

<PAGE>


                    3.1.9. EXCEPT AS SET FORTH IN THIS ARTICLE 3.1, SHEFFIELD IS
GRANTING  THE  SUBLICENSES  HEREUNDER  ON AN "AS  IS"  BASIS  WITHOUT  RECOURSE,
REPRESENTATION OR WARRANTY WHETHER EXPRESS OR IMPLIED,  INCLUDING  WARRANTIES OF
MERCHANTABILITY  OR FITNESS FOR A PARTICULAR  PURPOSE,  OR INFRINGEMENT OF THIRD
PARTY RIGHTS, AND ALL SUCH WARRANTIES ARE EXPRESSLY DISCLAIMED.

          3.2.      Newco  represents  and  warrants to Elan and  Sheffield  the
following:


                    3.2.1.  Newco is duly and validly  existing in good standing
in the jurisdiction of its  incorporation  and each other  jurisdiction in which
the conduct of its  business  requires  such  qualification  (except  where such
failure to so qualify shall not have a material  adverse  affect on the business
and assets of  Newco),  and Newco is in  compliance  with all  applicable  laws,
rules, regulations or orders relating to its business and assets;

                    3.2.2.  Newco has full  corporate  authority  to execute and
deliver this Agreement and to consummate the transactions  contemplated  hereby;
this  Agreement has been duly executed and delivered and  constitutes  the legal
and valid  obligations of Newco and is  enforceable  against Newco in accordance
with its terms;  and the execution,  delivery and  performance of this Agreement
and the transactions contemplated hereby will not violate or result in a default
under  or  creation  of  lien  or  encumbrance  under  Newco's   certificate  of
incorporation,  by-laws or other organic  documents,  any material  agreement or
instrument  binding upon or affecting  Newco, or its properties or assets or any
applicable laws, rules, regulations or orders affecting Newco, or its properties
or assets;

                    3.2.3.  Newco is not in default of its  charter or  by-laws,
any applicable laws or regulations or any material contract or agreement binding
upon or affecting it or its properties or assets and the execution, delivery and
performance of this Agreement and the transactions  contemplated hereby will not
result in any such violation;

                    3.2.4. Newco has not granted any option,  license,  right or
interest  to any  third  party  which  would  conflict  with  the  terms of this
Agreement;

                    3.2.5.  The Products  that are be  developed,  manufactured,
transported, stored, handled, packaged, marketed, promoted, distributed, offered
for  sale  and/or  sold by  Newco  shall be in  accordance  with all  applicable
regulations  and  requirements  of the FDA and  foreign  regulatory  authorities
including,  without limitation,  cGCP, cGLP, cGMP regulations  relating thereto.
The Products  shall not be  adulterated  or misbranded as defined by the Federal
Food,  Drug and  Cosmetic  Act (or  applicable  foreign  law) and shall not be a
product  which would violate any section of such Act if introduced in interstate
commerce; and

                    3.2.6. Newco is fully cognizant of all applicable  statutes,
ordinances and  regulations of the United States of America and countries in the
Territory  with respect to the  manufacture of the Products  including,  but not
limited  to,  the U.S.  Federal  Food,  Drug and  


                                       10
<PAGE>

Cosmetic  Act and  regulations  thereunder  and similar  statutes  in  countries
outside of the United States,  and cGMPs. To the extent that Newco  manufactures
or procures the  manufacture  of the Products,  such  manufacture or procurement
shall be in conformity with the Marketing  Authorizations  and in a manner which
fully  complies  with  all  United  States  of  America  and  foreign  statutes,
ordinances, regulations and practices.

          3.3.      Elan  represents  and  warrants to Newco and  Sheffield  the
following:


                    3.3.1. Elan is duly and validly existing in good standing in
the jurisdiction of its incorporation  and each other  jurisdiction in which the
conduct of its business requires such  qualification  (except where such failure
to so  qualify  shall not have a material  adverse  affect on the  business  and
assets of Elan),  and Elan is in compliance  with all  applicable  laws,  rules,
regulations or orders relating to its business and assets;

                    3.3.2. Elan  has full  corporate  authority  to execute  and
deliver this Agreement and to consummate the transactions  contemplated  hereby;
this  Agreement has been duly executed and delivered and  constitutes  the legal
and valid obligations of Elan and is enforceable against Elan in accordance with
its terms; and the execution, delivery and performance of this Agreement and the
transactions  contemplated  hereby will not violate or result in a default under
or creation of lien or encumbrance  under Elan's  certificate of  incorporation,
by-laws or other organic documents, any material agreement or instrument binding
upon or affecting  Elan,  or its  properties or assets or any  applicable  laws,
rules, regulations or orders affecting Elan, or its properties or assets;

                    3.3.3. Elan is not in default of its charter or by-laws, any
applicable  laws or  regulations or any material  contract or agreement  binding
upon or affecting it or its properties or assets and the execution, delivery and
performance of this Agreement and the transactions  contemplated hereby will not
result in any such violation.

          3.4.      Sheffield shall  indemnify,  defend and hold harmless Newco,
Elan and their  respective  officers,  directors,  employees and agents from all
actions,  losses,  claims,  demands,  damages,  costs and liabilities (including
reasonable  attorneys' fees) due to third party claims to which Newco or Elan is
or may become subject  insofar as they arise out of or are alleged or claimed to
arise out of (i) any breach by  Sheffield of any of its  obligations  under this
Agreement,  (ii) any breach of a representation or warranty of Sheffield made in
this  Agreement,  and (iii) any activities  conducted by Sheffield in connection
with  the  Project,  except  to the  extent  due to the  negligence  or  willful
misconduct of Newco or Elan.

          3.5.      Newco shall  indemnify,  defend and hold harmless  Sheffield
and Elan and their respective officers, directors, employees and agents from all
actions,  losses,  claims,  demands,  damages,  costs and liabilities (including
reasonable attorneys' fees) due to third party claims to which Sheffield or Elan
is or may become subject  insofar as they arise out of or are alleged or claimed
to arise out of (i) any  breach by Newco of any of its  obligations  under  this
Agreement,  (ii) any breach of any  representation  or warranty of Newco made in
this Agreement,  (iii) any activities  conducted by Newco in connection with the
Project,  except to the extent due to the  

                                       11
<PAGE>

negligence  or willful  misconduct  of  Sheffield or Elan (which  negligence  or
willful  misconduct  of Sheffield or Elan,  as the case may be, shall not affect
the  obligations  of Newco to the other party  hereunder),  and (iv) third party
claims to which Sheffield or Elan is or may become subject insofar as they arise
out of or are alleged or claimed to arise out of the  development,  manufacture,
transport,  packaging, storage, handling,  distribution,  promotion,  marketing,
offer for sale or sale of the Products, including any product liability claim or
any claim relating to any recall of a Product.  

          3.6.      As  a  condition   of   obtaining   an   indemnity   in  the
circumstances set out above or elsewhere in the Agreement,  the Party seeking an
indemnity shall:

                    3.6.1.  fully and  promptly  notify  the other  Party of any
claim or proceeding, or threatened claim or proceeding;

                    3.6.2.  permit the indemnifying  Party to take full care and
control of such claim or proceeding;

                    3.6.3. reasonably assist in the investigation and defense of
such claim or proceeding;

                    3.6.4.  not compromise or otherwise settle any such claim or
proceeding  without the prior written consent of the other Party,  which consent
shall not be unreasonably  withheld;  and take all reasonable  steps to mitigate
any loss or liability in respect of any such claim or proceeding.

          3.7.      Notwithstanding  anything to the contrary in this Agreement,
Elan,  Sheffield  and Newco  shall not be liable to the other for any  punitive,
consequential  or  incidental  loss or  damage  (whether  for loss of  profit or
otherwise) by reason of any representation or warranty,  condition or other term
or any duty of  common  law,  or under  the  express  or  implied  terms of this
Agreement,  and whether occasioned by the negligence of the respective  Parties,
their employees or agents or otherwise.

4.   ARTICLE IV:  PATENTS
     --------------------


          4.1.  Title:  Subject to the terms and  conditions of this  Agreement,
title to the various inventions and intellectual property are set forth below as
follows:

                      (i)     title to all  inventions  and  other  intellectual
property made solely by employees of Elan in  connection  with the Project shall
be owned by Elan;

                      (ii)    title to all  inventions  and  other  intellectual
property made solely by Newco in  connection  with the Project shall be owned by
Newco;

                      (iii)   title to all  inventions  and  other  intellectual
property made solely by Sheffield in connection with the Project, other than set
forth in  Article  7.1(v)  below,  shall be  

                                       12
<PAGE>

owned  by  Newco  including,   without   limitation,   any  such  inventions  or
intellectual property relating to the ADDS Technology;

                      (iv)    title to all  inventions  and  other  intellectual
property made jointly by Elan and Newco in connection  with the Project shall be
owned by Newco;

                      (v)     title to all  inventions  and  other  intellectual
property  made solely by Sheffield  employees or jointly by Newco and  Sheffield
employees relating to the MSI Delivery System shall be owned by Sheffield; and

                      (vi)    all  other   inventions  and  other   intellectual
property  made between  Sheffield  and Newco  employees in  connection  with the
Project  shall  be owned  by  Newco,  including,  without  limitation,  any such
inventions or intellectual property relating to the ADDS Technology.

          4.2.      Filing and Prosecution of Patents
                    ---------------------------------

                    4.2.1.  Each Party shall timely  inform the other in writing
of any improvement or development made by such Party relating,  respectively, to
the Elan Intellectual Property, the Sheffield Intellectual Property,  and/or the
Newco Intellectual  Property so that any patent protection that may be available
for any such improvement or development is not compromised.

                    4.2.2.  Newco shall  prepare,  prosecute  and  maintain  all
patents applications and issued patents relating to the inventions, improvements
and other  intellectual  property set forth in paragraphs (ii),  (iii), (iv) and
(vi)  in  Article  7.1.  With  respect  to  such  preparation,  prosecution  and
maintenance  activities,  Newco shall timely  inform  Sheffield of the status of
such  activity if such  inventions  have  application  in the Topical  Pulmonary
Field.  In the event Newco shall  decide not to seek patent  protection  for any
such intellectual  property,  Elan shall have the option to take control of such
prosecution.  In the event that Elan shall  determine,  in good faith,  that any
patents applications and issued patents relating to the inventions, improvements
and other  intellectual  property set forth in paragraphs (ii),  (iii), (iv) and
(vi) in Article 7.1 predominantly  relates to an area other than the Field, Elan
shall  have the  option to take  control  of the  preparation,  prosecution  and
maintenance of patent protection directed to such intellectual  property. In the
event that Elan does not  exercise  such  right,  Newco shall have the option to
take  responsibility for the preparation,  prosecution and maintenance of patent
protection directed to such intellectual property.

                    4.2.3.  Sheffield shall prepare,  prosecute and maintain all
patents applications and issued patents relating to paragraph (v) in section 7.1
with respect to such preparation, prosecution and maintenance activities.

          4.3.      Enforcement of  Intellectual  Property  Rights;  Third party
                    infringement
                    ------------------------------------------------------------

                    4.3.1.  Newco and Sheffield  shall promptly inform the other
in writing of any alleged  infringement  or  unauthorized  use of which it shall
become  aware  by a  third  party  of  Sheffield  Intellectual  Property,  Newco
Intellectual  Property, the Elan Intellectual Property and/or Joint Intellectual
Property and provide such other with any available evidence of such unauthorized
activity.

                                       14

<PAGE>

                    4.3.2. During the Term, Newco shall have the right to pursue
at its own expense any  enforcement  activities  of the  Sheffield  Intellectual
Property and/or the Newco  Intellectual  Property and/or the Joint  Intellectual
Property  within the Field.  Sheffield  shall  agree to be named as a  necessary
party in an action  brought by and fully  financed by Newco and will  reasonably
co-operate  with such action.  Newco shall  reimburse any out of pocket expenses
borne  by   Sheffield.   Should  Newco  decide  not  to  enforce  the  Sheffield
Intellectual  Property and/or the Newco  Intellectual  Property and/or the Joint
Intellectual  Property within the Field,  Sheffield may do so at its expense and
for its own benefit, and Newco will reasonably  co-operate with such action. Any
actual out of pocket  expenses  borne by Newco in  cooperating  with such action
shall be reimbursed by Sheffield.

                    4.3.3.  Notwithstanding  anything contained in Article 4.3.2
to the  contrary,  in the event that a third party is believed to be  infringing
any intellectual property right relating to the MSI Delivery System, then at the
request  of  Newco,  Sheffield  shall,  at  Sheffield's  discretion,  take  such
reasonable and necessary  actions to remove such infringing  activity or, in the
alternative,  Sheffield  shall  promptly  grant to Newco the right to pursue any
enforcement activities of the intellectual property relating to the MSI Delivery
System.

          4.4.      Infringement of third party patents
                    -----------------------------------

                    4.4.1.  In the event that a claim or proceedings are brought
against Newco by a third party  alleging that the  manufacture,  use,  offer for
sale, sale or other activity relating to the Products constitute an unauthorized
use of an  intellectual  property  right  owned  by  such a third  party  in the
Territory, Newco shall promptly advise Sheffield of such threat or suit.

                    4.4.2. Newco shall indemnify,  defend and hold Sheffield and
Elan harmless against all actions,  losses, claims, demands,  damages, costs and
liabilities   (including   reasonable   attorneys  fees)  relating  directly  or
indirectly  to all such claims or  proceedings  referred to in this Article 4.4;
provided that  Sheffield or Elan shall not  acknowledge to the third party or to
any other person the validity of any claims of such a third party, and shall not
compromise or settle any claim or proceedings relating thereto without the prior
written consent of Newco, not to be unreasonably withheld or delayed.

5A.       ARTICLE V(A): REGARDING THE SHEFFIELD INTELLECTUAL PROPERTY
          -----------------------------------------------------------

          5A.1      Conformance With Siemens Agreements
                    -----------------------------------

          The  Parties  acknowledge  that those  Sheffield  rights in and to the
Sheffield  Intellectual  Property  which are  derived  from the  Siemens  Supply
Agreement and the Siemens License  Agreement,  are therefore  subject to all the
terms and conditions  thereof.  It is the Parties' express intent that the grant
by  Sheffield  of any such rights be  consistent  with the terms and  conditions
thereof and Sheffield's obligations thereunder.

          5A.2      After Acquired Know How
                    -----------------------

                                       14

<PAGE>

          If Sheffield  acquires the rights to additional know how or patents in
the Systemic Pulmonary Field after the execution of this Agreement, it agrees to
negotiate  in good  faith  with  Elan and  Newco a  license  or  sublicense,  as
appropriate,  of such  know how and  patents  to Newco  for use in the  Systemic
Pulmonary Field.

5.   ARTICLE V:  MISCELLANEOUS CLAUSES
     ---------------------------------


          5.1.      Secrecy
                    -------


                    5.1.1.  Any  information,  whether written or oral (provided
that oral information  shall be reduced to writing within one month by the party
giving the oral information and the written form shall be furnished to the other
party)  pertaining  to the  Product  that  has been or will be  communicated  or
delivered  by any  Party to the  other,  including,  without  limitation,  trade
secrets,  business  methods,  and cost,  supplier,  manufacturing  and  customer
information  (collectively,  "Confidential  Information"),  shall be  treated by
Newco, Sheffield and Elan, respectively,  as confidential information, and shall
not be disclosed or revealed to any third party whatsoever or used in any manner
except  as  expressly  provided  for  herein;   provided,   however,  that  such
confidential   information   shall  not  be  subject  to  the  restrictions  and
prohibitions  set forth in this  Article  to the extent  that such  Confidential
Information:

                               (A)        is  available  to the public in public
                                          literature  or  otherwise,   or  after
                                          disclosure  by one  Party to the other
                                          becomes  public  knowledge  through no
                                          default  of the Party  receiving  such
                                          Confidential Information; or

                               (B)        was known to the Party  receiving such
                                          Confidential  Information prior to the
                                          receipt    of    such     Confidential
                                          Information  by  such  Party,  whether
                                          received before or after the Effective
                                          Date; or

                               (C)        is  obtained  by the  Party  receiving
                                          such  Confidential  Information from a
                                          third   party   not   subject   to   a
                                          requirement  of  confidentiality  with
                                          respect    to    such     Confidential
                                          Information; or

                               (D)        is required to be  disclosed  pursuant
                                          to:  (A) any  order of a court  having
                                          jurisdiction  and power to order  such
                                          information  to be  released  or  made
                                          public;  or (B) any lawful action of a
                                          governmental or regulatory agency.

                    5.1.2.  Each  Party  shall  take all such  precautions  with
Confidential Information disclosed to it by the other Party as it normally takes
with its own confidential  information to prevent any improper disclosure of the
Confidential  Information disclosed to it by the other 


                                       15
<PAGE>

Party to any third party; provided,  however, that such Confidential Information
may be disclosed within the limits required to obtain any authorization from the
FDA or any other United States of America or foreign  governmental or regulatory
agency or, with the prior written consent of the other Party, which shall not be
unreasonably  withheld,  or as may otherwise be required in connection  with the
purposes of this Agreement.

                    5.1.3.  Notwithstanding the above, each Party hereto may use
or disclose  Confidential  Information disclosed to it by the other Party to the
extent such use or disclosure is reasonably  necessary in filing or  prosecuting
patent  applications,   prosecuting  or  defending  litigation,  complying  with
applicable  governmental  regulations or otherwise submitting information to tax
or other  governmental  authorities,  conducting  clinical  trials,  or making a
permitted  sub-license or otherwise  exercising its rights  hereunder,  provided
that if a Party is required  to make any such  disclosure  of the other  party's
Confidential Information, other than pursuant to a confidentiality agreement, it
will given reasonable advance notice to the latter Party of such disclosure and,
except to the extent inappropriate in the case of patent applications,  will use
its best efforts to secure  confidential  treatment of such information prior to
its disclosure (whether through protective orders or otherwise).

                    5.1.4.  Each Party agrees that it will not use,  directly or
indirectly,  any Confidential  Information disclosed by the other Party pursuant
to this Agreement, other than as expressly provided herein.

                    5.1.5.  Newco and Sheffield will not publicize the existence
of this  Agreement  in any way  without the prior  written  consent of the other
subject to the disclosure  requirements of applicable laws and regulations.  The
Parties agree that promptly following the execution of this Agreement they shall
issue an  agreed  press  release  which  will  not  disclose  the  terms of this
Agreement.  In the event that one of the Parties wishes to make an  announcement
concerning the Agreement, that Party will seek the consent of the other Parties.
The terms of any such announcement shall be agreed in good faith.

          5.2.      Conflict.  IN THE  EVENT OF ANY  INCONSISTENCY  OR  CONFLICT
BETWEEN THE  PROVISIONS OF THE ELAN LICENCE  AGREEMENT ON THE ONE HAND,  AND THE
PROVISIONS OF THIS AGREEMENT AND THE  NEWCO/SHEFFIELD  LICENSE  AGREEMENT ON THE
OTHER HAND, THE TERMS OF THE ELAN LICENSE  AGREEMENT SHALL GOVERN AND CONTROL IN
ALL RESPECTS.

          5.3.      Parties  bound.  This  Agreement  shall be binding  upon and
inure for the benefit of Parties hereto, their successors and permitted assigns.

          5.4.      Severability.  If any provision in this  Agreement is agreed
by the Parties to be, or is deemed to be, or becomes invalid,  illegal,  void or
unenforceable  under any law that is applicable  hereto, (i) such provision will
be  deemed  amended  to  conform  to  applicable  laws  so as to  be  valid  and
enforceable  or, if it cannot be so  amended  without  materially  altering  the
intention of the Parties, it will be deleted,  with effect from the date of such
agreement or such 


                                       16
<PAGE>

earlier  date as the  Parties may agree,  and (ii) the  validity,  legality  and
enforceability  of the  remaining  provisions  of this  Agreement  shall  not be
impaired or affected in any way.

          5.5.      Duration and Termination
                    ------------------------

                    5.5.1.  Subject to the other provisions of Article 5.5, this
Agreement  shall  remain in full force and  effect on a Product  by Product  and
country by country basis,  for a period  commencing as of the Effective Date and
expiring [text omitted] years from the date of the first commercial sale of such
Product in such country in the Territory, or [text omitted], whichever is longer
(the "Term").  Promptly following the signing of this Agreement,  Sheffield will
use its best and  diligent  efforts  to extend the term of the  Siemens  License
Agreement  and  its  rights  thereunder,   including,  without  limitation,  the
exclusive  license  granted to  Sheffield in and to the  Sheffield  Intellectual
Property, for an initial period of at least fifteen years from the date thereof.
Upon Sheffield's obtaining such extension, it promptly shall so notify Newco and
Elan  in  writing,  specifying  the  period  and  territories  covered  by  such
extension.  The Term shall be  automatically  extended for a period equal to any
such extension of such rights of Sheffield under the Siemens  License  Agreement
at no additional cost to Newco and Elan.

                    5.5.2.  In  addition  to the  rights  of early or  premature
termination provided for elsewhere in this Agreement, the term of this Agreement
may be terminated immediately upon written notice of termination given by:

                                  (A)     the non-defaulting  party in the event
                                          that the other party shall: (1) commit
                                          a material  breach or default  under a
                                          Definitive  Document,  which breach or
                                          default  shall not be remedied  within
                                          sixty (60) days  after the  receipt of
                                          written notice thereof by the party in
                                          breach or default;  or (2) have made a
                                          material   misrepresentation   of  any
                                          representation  or warranty  contained
                                          herein or any Definitive Document; or

                                   (B)    Elan on the one  hand,  and  Sheffield
                                          and Newco on the other hand,  if Elan,
                                          Sheffield  or Newco (on an  individual
                                          basis),  as the case may be,  shall at
                                          any  time  be  Insolvent,   dissolved,
                                          liquidated,  discontinued, or when any
                                          proceeding  is filed or  commenced  by
                                          either    Party   under    bankruptcy,
                                          insolvency or debtor relief laws.  For
                                          purposes     of    this     Agreement,
                                          "Insolvent"  shall mean (1) the sum of
                                          a Party's  debts  exceeds  its assets,
                                          (2) a Party is  unable,  or has reason
                                          to believe  it is  unable,  to pay its
                                          debts as such debts  mature,  or (3) a
                                          Party does not have sufficient capital
                                          with which to conduct its business.

                    5.5.3.  Upon exercise of those rights of  termination as set
forth in this  Agreement  with respect to any country or countries or the entire
Agreement  as the  case may be,  this  Agreement  shall,  subject  to the  other
provisions of the Agreement, automatically terminate forthwith in the applicable
country or  countries  or the entire  Agreement as the case may be, and be of no
further legal force or effect.

                    5.5.4. Upon termination of this Agreement:

                                       17

<PAGE>
                                  (A)     all confidentiality provisions set out
                                          herein  shall remain in full force and
                                          effect for a period of five (5) years;

                                  (B)     all representations,  warranties,  and
                                          indemnities    shall    survive    the
                                          termination   of  this  agreement  and
                                          shall remain in full force and effect;

                                  (C)     termination  of this Agreement for any
                                          reason  shall  not  release  any Party
                                          hereto from any  liability  which,  at
                                          the  time  of  such  termination,  has
                                          already  accrued to the other Party or
                                          which  is  attributable  to  a  period
                                          prior to such termination nor preclude
                                          either Party from  pursuing all rights
                                          and remedies it may have  hereunder or
                                          at law or in equity  with  respect  to
                                          any breach of this Agreement;

                                  (D)     except as is  necessary to enable Elan
                                          to exercise the licenses to be granted
                                          by  Newco  and/or  Sheffield  to  Elan
                                          under   this   Agreement,   upon   any
                                          termination of this Agreement,  Newco,
                                          Sheffield  and  Elan  shall   promptly
                                          return   to  the   other   Party   all
                                          Confidential Information received from
                                          the other  Party  (except  one copy of
                                          which  may be  retained  for  archival
                                          purposes);

                                  (E)     in  the  event   this   Agreement   is
                                          terminated for any reason, Newco shall
                                          have the right for a period of six (6)
                                          months  from  termination  to  sell or
                                          otherwise  dispose of the stock of any
                                          Product then on hand,  which such sale
                                          shall be subject to  applicable  terms
                                          of this Agreement;

                                  (F)     At  Elan's  option,   except  for  the
                                          termination  of this  Agreement due to
                                          the  Insolvency of Elan, or unless the
                                          Elan License  Agreement is  terminated
                                          due to the  breach by Elan  beyond any
                                          cure or  grace  period  in  accordance
                                          with the terms thereof,  the Sheffield
                                          Intellectual  Property  and all of the
                                          rights  granted  to  Newco   hereunder
                                          shall  immediately  be  deemed to have
                                          been assigned and transferred to Elan,
                                          and Sheffield shall take such actions,
                                          without cost to Elan, to sublicense to
                                          Elan  Sheffield's   rights  under  the
                                          Siemens  License  Agreement  to secure
                                          for   Elan   the   benefits   of  such
                                          agreement.

                                  (G)     The following  Articles  shall survive
                                          the  termination or expiration of this
                                          Agreement  for any reason:  Article 1,
                                          Article  2.1.1,  Article 3,  Article 4
                                          and Article 5.

                                       18
<PAGE>
          5.6.      Force  Majeure.  Neither  Party to this  Agreement  shall be
liable for delay in the performance of any of its obligations  hereunder if such
delay  results from causes beyond its  reasonable  control,  including,  without
limitation,  acts of God,  fires,  strikes,  acts of war, or  intervention  of a
Government Authority,  non availability of raw materials,  but any such delay or
failure shall be remedied by such Party as soon as practicable.

          5.7.      Relationship  of the  Parties.  Nothing  contained  in  this
Agreement  is intended  or is to be  construed  to  constitute  Elan,  Newco and
Sheffield  as partners or joint  venturers or either Party as an employee of the
other. Neither Party hereto shall have any express or implied right or authority
to  assume or create  any  obligations  on behalf of or in the name of the other
Party or to bind the other Party to any contract,  agreement or undertaking with
any third party.

          5.8.      Amendments.  No amendment,  modification  or addition hereto
shall be  effective  or  binding on any Party  unless  set forth in writing  and
executed by a duly authorized representative of all Parties.

          5.9.      Waiver. No waiver of any right under this Agreement shall be
deemed  effective  unless  contained in a written  document  signed by the Party
charged  with such  waiver,  and no waiver of any  breach or  failure to perform
shall be deemed to be a waiver of any future  breach or failure to perform or of
any other right arising under this Agreement.

          5.10.     No  effect  on  other  agreements.   No  provision  of  this
Agreement  shall be construed  so as to negate,  modify or affect in any way the
provisions  of any other  agreement  between  the  Parties  unless  specifically
referred to, and solely to the extent provided, in any such other agreement.

          5.11.     Applicable  Law. This Agreement is construed under and ruled
by the laws of the State of New York.  For the  purpose  of this  Agreement  the
Parties submit to the personal  jurisdiction of the United States District Court
for the State of New York. The Parties each further  irrevocably  consent to the
service of any complaint,  summons,  notice or other process by delivery thereof
to it by any manner in which notices may be given pursuant to this Agreement.

          5.12.     Notices.  Any notice to be given under this Agreement  shall
be sent in writing in English by registered airmail or faxed to:

                    -   ELAN at

                        Elan Corporation plc.
                        Lincoln House,
                        Lincoln Place,
                        Dublin 2, Ireland.

                                  19
<PAGE>

                        Attention: President, Elan Pharmaceutical Technologies,
                                   a division of Elan Corporation plc
                        Telefax :  353 1 662 4960

                    -   Newco at

                        Systemic Pulmonary Delivery, Ltd.
                        c/o Elan International Services, Ltd.
                        102 St. James Street
                        Flatts, Smith Parish FL04
                        Bermuda

                        Attention: Chief Executive Officer

                    -   Sheffield at

                    Sheffield Pharmaceuticals, Inc.
                    37 South Main Street
                    Pittsford, New York 14534

                    Atttention:  Chairman

                    and

                    Sheffield Pharmaceutical, Inc.
                    425 South Woodsmill Road
                    St. Louis, Missouri 63017

                    Attention:  Chief Executive Officer
                    Telefax:  (314) 579-9799

                    with a copy to

                    Olshan Grundman Frome & Rosenzweig LLP
                    505 Park Avenue
                    New York, New York  100022
                    Attention: Daniel J. Gallagher, Esq.

                                       20
<PAGE>
                    and

                    Fitzpatrick, Cella, Harper & Scinto
                    30 Rockefeller Plaza
                    New York, NY 10112

                    Attention:  Michael P. Sandonato, Esq.
                    Telefax:  (212) 218-2200

                    or to such other address(es) and telefax numbers as may from
                    time  to time be  notified  by  either  Party  to the  other
                    hereunder.

          If a notice  is sent by  Sheffield  to  Newco  or  Newco to  Sheffield
pursuant to any agreements relating to the transactions  contemplated hereunder,
then Sheffield or Newco, as the case may be, shall send a copy of such notice to
Elan in accordance with the provisions of this Article.

          Any notice sent by  registered  air-mail  shall be deemed to have been
delivered  within seven (7) working  days after  dispatch and any notice sent by
telefax  (with  confirmed  answer  back) shall be deemed to have been  delivered
within twenty four (24) hours of the time of the  dispatch.  Notice of change of
address shall be effective upon receipt.

          5.13.     No Implied  Rights.  No rights or  licenses  are  granted or
deemed  granted  hereunder or in  connection  herewith,  other than those rights
expressly granted in this Agreement.

          5.14.     Further Assurances.  At any time or from time to time on and
after  Effective  Date, each party shall at the request of the other (i) deliver
such records,  data or other  documents  consistent  with the provisions of this
Agreement,  (ii)  execute,  and  deliver  or  cause  to be  delivered,  all such
consents,  documents or further  instruments  of transfer or license,  and (iii)
take or cause to be taken all such  actions,  as the other Party may  reasonably
deem  necessary or desirable in order for it to obtain the full benefits of this
Agreement and the transactions contemplated hereby.

          5.15.     Entire Agreement . This Agreement  including its Appendices,
together  with the  Definitive  Documents,  sets forth the entire  agreement and
understanding  of the Parties with  respect to the subject  matter  hereof,  and
supersedes all prior  discussions,  agreements and writings in relating thereto,
including the letter of agreement of June 3, 1998.


                                       21
<PAGE>
          5.16.     Counterparts.   This   Agreement  may  be  executed  in  two
counterparts, each of which shall be deemed an original and which together shall
constitute one instrument.


          IN WITNESS  THEREOF the Parties hereto have executed this Agreement in
duplicate.


                                 SYSTEMIC PULMONARY DELIVERY, LTD



                                 By: /s/ Thomas M. Fitzgerald
                                     --------------------------
                                 Name:  Thomas M. Fitzgerald
                                 Title: Chairman



                                 SHEFFIELD PHARMACEUTICAL, INC.


                                 By: /s/ Thomas M. Fitzgerald
                                     --------------------------
                                 Name:  Thomas M. Fitzgerald
                                 Title: Chairman



                                 ELAN CORPORATION, PLC


                                 By: /s/ Thomas Lynch
                                     --------------------------
                                 Name:  Thomas Lynch
                                 Title: Chief Financial Officer

                                       22
<PAGE>


                                   APPENDIX A

                            SHEFFIELD PATENT RIGHTS

                                 [TEXT OMITTED]

<PAGE>
                                   APPENDIX B

                                      PLAN

                                 [TEXT OMITTED]



                                    CERTAIN  PORTIONS HAVE BEEN OMITTED BASED ON
                                    A  REQUEST   FOR   CONFIDENTIAL   TREATMENT;
                                    OMITTED  PORTIONS FILED  SEPARATELY WITH THE
                                    SECURITIES AND EXCHANGE COMMISSION




                        LICENSE AND DEVELOPMENT AGREEMENT


                                 BY AND BETWEEN


                        SYSTEMIC PULMONARY DELIVERY, LTD.
                                A BERMUDA COMPANY


                                       AND


                         SHEFFIELD PHARMACEUTICAL, INC.
                             A DELAWARE CORPORATION



                                       AND


                              ELAN CORPORATION, PLC
                                AN IRISH COMPANY





                THIS AGREEMENT IS MADE THE 30TH DAY OF JUNE 1998











<PAGE>
                                TABLE OF CONTENTS
                                -----------------



1.          ARTICLE I : DEFINITIONS............................................1


2.          ARTICLE II :  THE LICENSE..........................................8


3.          ARTICLE III:  DEVELOPMENT OF THE PRODUCT..........................12


4.          ARTICLE IV:  FINANCIAL PROVISIONS.................................13


5.          ARTICLE V:  REGISTRATION OF THE PRODUCT...........................15


6.          ARTICLE VI:  WARRANTY AND INDEMNITY...............................16


7.          ARTICLE VII:   PATENTS............................................19


8A.         ARTICLE VIII(A):  REGARDING THE SHEFFIELD INTELLECTUAL PROPERTY...21


8.          ARTICLE VIII:  MISCELLANEOUS CLAUSES..............................22







<PAGE>



LICENSE AND DEVELOPMENT Agreement,  dated June 30, 1998, by and between Systemic
Pulmonary   Delivery,   Ltd.,  a  Bermuda   corporation   ("Newco"),   Sheffield
Pharmaceutical, Inc., a Delaware corporation ("Sheffield"), and Elan Corporation
plc., an Irish corporation ("Elan").

                                    RECITALS
                                    --------

          A.        Newco owns,  controls  and/or has rights in and to the Newco
Intellectual Property (capitalized terms used herein are defined below), and

          B.        Elan is beneficially entitled to the use of various patents,
including the Elan Patent  Rights,  which have been granted or are pending under
the  International  Convention in relation to the  development and production of
drug delivery devices and processes, and

          C.        Elan has  agreed to enter  into the Elan  License  Agreement
provided that Sheffield and Newco enter into this Agreement, and

          D.        Newco  is  entering  into  this   Agreement  with  Sheffield
pursuant to which  Sheffield  shall have the right to manufacture  and to market
the Products in the Territory.

          NOW THEREFORE, The Parties agree as follows:

1.     ARTICLE I :  DEFINITIONS
       ------------------------

          1.1.      In the present  Agreement and any further  agreements  based
thereon between the Parties hereto, the following definitions shall apply:

                    "ADDS   Technology"  shall  mean  all  of  the  MDI-Aeroquip
                    technology for all pharmaceutical, medicinal and therapeutic
                    applications  acquired or to be acquired by Newco upon terms
                    and conditions approved in advance by EIS.

                    "Affiliate"   shall   mean   any   corporation   or   entity
                    controlling,  controlled  by or under the common  control of
                    Sheffield,  Newco  or  Elan,  as the  case  may be.  For the
                    purpose of this  Agreement,  "control" shall mean the direct
                    or indirect  ownership of at least twenty-five (25%) percent
                    of the  outstanding  shares  or other  voting  rights of the
                    subject  entity to elect  directors,  or if not  meeting the
                    preceding  criteria,  any entity owned or  controlled  by or
                    owning or  controlling  at the maximum  control or ownership
                    right permitted in the country where such entity exists.

                    "Agreement"  shall  mean this  agreement  (which  expression
                    shall be deemed  to  include  the  Recitals  and  Appendices
                    hereto).

                                       1
<PAGE>

                    "cGCP",  "cGLP" and "cGMP" shall mean current Good  Clinical
                    Practices,  current Good  Laboratory  Practices  and current
                    Good Manufacturing Practices respectively.

                    "Confidential  Information" shall have the meaning set forth
                    in Article 8.1 below.

                    "Definitive  Documents" shall mean this Agreement,  the Elan
                    License Agreement,  the  Sheffield/Newco  License Agreement,
                    and any other documents or agreements executed in connection
                    with the transactions contemplated hereunder and thereunder.

                    "EIS" shall mean Elan International Services, Ltd.

                    "Effective Date" shall mean June 30, 1998.

                    "Elan"  shall  mean  Elan  Corporation,  plc  and any of its
                    Affiliates.

                    "Elan  Intellectual  Property"  shall  mean the Elan  Patent
                    Rights and/or the Elan Know-How.

                    "Elan Know-How" shall mean all knowledge, information, trade
                    secrets, data and expertise relating to the UPDAS Technology
                    and  the   Enhancing   Technology   (only  as   defined   in
                    subparagraph   "(ii)"  of  the   definition   of   Enhancing
                    Technology),  where the  therapeutic  mechanism of action is
                    local to the  lung,  solely  and  specifically  for  asthma,
                    cystic fibrosis,  chronic obstructive  pulmonary disease and
                    the use of anti-infectives  for the treatment of respiratory
                    infection, that is owned or licensed by Elan (other than the
                    Excluded  Technology) as of the Effective  Date,  including,
                    but not limited to, clinical data and test results,  and for
                    the  avoidance  of doubt  shall  include  the  Elan  Project
                    Know-How,  whether or not covered by any patent,  copyright,
                    design,  trademark,  trade  secret  or other  industrial  or
                    intellectual   property  rights,  but  all  subject  to  any
                    contractual  obligations to unaffiliated  third parties that
                    Elan has as of the Effective Date.

                    "Elan  License   Agreement"   shall  mean  the  License  and
                    Development Agreement, dated even date herewith, among Elan,
                    Newco and Sheffield  pursuant to which,  among other things,
                    Elan is  licensing  to Newco the Elan  Know-How and the Elan
                    Patent Rights in accordance with the terms and conditions of
                    said agreement.

                    "Elan  Patent  Rights"  shall  mean all  patents  and patent
                    applications  related to the UPDAS  Technology and Enhancing
                    Technology  (only as defined in  subparagraph  "(ii)" of the
                    definition of Enhancing  Technology),  where the therapeutic
                    mechanism  of  action  is  local  to the  lung,  solely  and
                    specifically   for   asthma,   cystic   fibrosis,    chronic
                    obstructive pulmonary disease and the use of anti-infectives
                    for the treatment of respiratory  infection,  that are owned
                    or  licensed  by or on  behalf of Elan,  including  the Elan
                    Project   Patent   Rights,   (but   excluding  the  Excluded


                                       2
<PAGE>

                    Technology),  as of the Effective Date,  which patents as of
                    the  Effective  Date are set forth on  Appendix  A  attached
                    hereto; all subject, however, to any contractual obligations
                    to  unaffiliated  third  parties  that  Elan  has  as of the
                    Effective  Date.  Elan Patent Rights shall also include Elan
                    Improvements    and    all    extensions,     continuations,
                    continuations-in-part,  divisionals,  patents of  additions,
                    reexaminations,    re-issues,    supplementary    protection
                    certificates  and foreign  counterparts  of such patents and
                    patent  applications  and any  patents  issuing  thereon and
                    extensions of any patents licensed hereunder.

                    "Elan   Project   Know-How"   shall   mean  all   knowledge,
                    information,  trade secrets,  data and expertise relating to
                    the UPDAS Technology and Enhancing  Technology that is owned
                    or  developed  by or on  behalf  of Elan  (other  than  with
                    respect to the Excluded Technology) pursuant to the Project,
                    including  clinical  data,  whether  or not  covered  by any
                    patent, copyright,  design, trademark, trade secret or other
                    industrial or intellectual property rights.

                    "Elan  Project  Patent  Rights"  shall  mean any  patents or
                    patent  applications  related to the UPDAS Technology and/or
                    the Enhancing  Technology  that are owned or developed by or
                    on  behalf of Elan  (other  than the  Excluded  Technology),
                    under this Agreement and pursuant to the Project.

                    "Enhancing   Technology"   shall   mean   (i)   the  use  of
                    [text omitted] that is  intended  to  facilitate  or enhance
                    systemic delivery of a drug for therapeutic  purposes,  when
                    co-administered  via  inhalation  with  said  drug  via  the
                    pulmonary   route,   and/or   (ii)   the  use  if  any,   of
                    [text omitted]  that  is  intended to  facilitate or enhance
                    topical  delivery  to the  lung  of a drug  for  therapeutic
                    purposes when  co-administered via inhalation with said drug
                    via the pulmonary route.

                    "Excluded Technology" shall mean all knowledge, information,
                    trade secrets, data, discoveries,  inventions, improvements,
                    ideas, techniques, processes, formulations, systems, designs
                    and/or  expertise,   and  any  and  all  other  intellectual
                    property (including patents and patent applications that are
                    issued or that may be issued),  relating to motor driven dry
                    powder inhalers and related powdered  storage  systems,  and
                    any  and  all  other  transactions  contemplated  under  the
                    License Agreement,  and the Protein and Peptide  Development
                    Agreement,  each  dated  September  5, 1994,  between  [text
                    omitted]  and Elan,  as the same may be amended from time to
                    time.

                    "FDA"   shall   mean  the  United   States   Food  and  Drug
                    Administration or any other successor agency, whose approval
                    is necessary to market the Products in the United  States of
                    America.

                    "Field" shall mean the Topical Pulmonary Field.

                                       3
<PAGE>
                    "In Market" shall mean the sale of the Products,  whether by
                    Sheffield  or  its  Affiliates,  or  where  applicable  by a
                    permitted   sublicensee,   to  a  third   party  such  as  a
                    wholesaler,    distributor,   managed   care   organization,
                    hospital, pharmacy and/or the like.

                    "Joint Intellectual  Property" shall mean the Joint Know-How
                    and/or the Joint Patent Rights.

                    "Joint  Know-How" shall mean all knowledge,  information and
                    expertise  developed  by at least two of the  three  Parties
                    during the Term relating to the Field and in accordance with
                    the Project whether or not covered by any patent, copyright,
                    design,   trademark  or  other  industrial  or  intellectual
                    property rights..

                    "Joint  Patent  Rights"  shall  mean any  patent  and patent
                    applications  created,  developed,  conceived  or  otherwise
                    invented  by at least two of the three  Parties  pursuant to
                    the Agreement, relating to the Field, and in accordance with
                    the  Project.  Joint  Patent  Rights  shall also include all
                    extensions,      continuations,       continuations-in-part,
                    divisionals,   patents   of   additions,    re-examinations,
                    re-issues, supplementary protection certificates and foreign
                    counterparts of such patents and patent applications and any
                    patents  issuing  thereon  and  extensions  of  any  patents
                    licensed hereunder.

                    "Marketing  Authorization"  shall  mean the  procurement  of
                    registrations and permits required by applicable  government
                    authorities in a country in the Territory for the marketing,
                    sale, and distribution of a Product in such country.

                    "MSI  Delivery  System"  shall mean  Sheffield's  Multi Dose
                    Nebulizer  comprising  a device and dosator  that  generally
                    conforms  to the  specifications  in Annex 2 to the  Siemens
                    Supply  Agreement  for use with  medicines  for the systemic
                    treatment of diseases,  and improvements thereto,  excluding
                    the use of  medicines  for  humans in  treating  respiratory
                    disease and/or other lung disease, which exclusion includes,
                    but is not limited to, the use of anti-infectives.

                    "Newco" shall mean Systemic Pulmonary Delivery, Ltd. and any
                    of its Affiliates.

                    "Newco  Improvements"  shall  mean any and all  improvements
                    conceived,  created, developed, and/or otherwise invented by
                    or on behalf of Newco  relating  to the Field  that are made
                    pursuant to the Agreement only during the Project.

                    "Newco Intellectual  Property" shall mean the Newco Know-How
                    and/or the Newco Patent Rights.

                    "Newco  Know-How"  shall  mean all  knowledge,  information,
                    trade  secrets,  data and  expertise  relating  to the UPDAS
                    Technology,  the  Enhancing  Technology  (only as defined in
                    subparagraph  "(ii)"  of the  definition  of  the  Enhancing

                                       4
<PAGE>

                    Technology)  and  ADDS  Technology,  where  the  therapeutic
                    mechanism  of  action  is  local  to the  lung,  solely  and
                    specifically for [text omitted] that is owned or licensed by
                    Newco as of the Effective Date,  including,  but not limited
                    to,  the  Newco  Improvements  and  clinical  data  and test
                    results,  whether or not covered by any  patent,  copyright,
                    design,  trademark,  trade  secret  or other  industrial  or
                    intellectual property rights, but subject to any contractual
                    obligations to  unaffiliated  third parties that Elan has as
                    of the Effective Date or in the future as developed pursuant
                    to the Project.

                    "Newco  Patent  Rights"  shall mean all  patents  and patent
                    applications   related   to  ADDS   Technology,   where  the
                    therapeutic mechanism of action is local to the lung, solely
                    and  specifically  for  [text  omitted]  that  is  owned  or
                    licensed by Newco as of the  Effective  Date,  including the
                    Newco  Improvements,  which patents as of the Effective Date
                    are set forth on Appendix B attached  hereto.  Newco  Patent
                    Rights  shall also  include all  extensions,  continuations,
                    continuations-in-part,  divisionals,  patents  of  addition,
                    reexaminations,    re-issues,    supplementary    protection
                    certificates  and foreign  counterparts  of such patents and
                    patent  applications  and any  patents  issuing  thereon and
                    extensions of any patents licensed hereunder.

                    "NSP" shall mean that sum  determined by deducting  from the
                    gross  amount  billed for the Products  (including,  without
                    limitation,  any and all sums billed for the compound and/or
                    drug product  delivered  with,  by and/or via the  Products;
                    sums billed for the supply of the  Products;  and  royalties
                    receivable for the sale of the Products) sold In Market, the
                    following:

                           (a) transportation  charges or allowances,  including
                           freight pick-up  allowances,  and packaging costs, if
                           any;

                           (b)  trade,  quantity  or  cash  discounts,   service
                           allowances  and   independent   broker's  or  agent's
                           commissions, if any, allowed or paid;

                           (c) credits or  allowances,  if any, given or made on
                           account of price  adjustments,  returns up to ten per
                           cent (10%) of gross  sales,  off-invoice  promotional
                           discounts,  rebates,  any and all national,  federal,
                           state  or  local  government   rebates,   whether  in
                           existence now, or enacted at any time during the term
                           of this Agreement; and

                           (d) any tax (other than income or  corporation  tax),
                           excise or governmental charge upon or measured by the
                           production,  import,  export,  sale,  transportation,
                           delivery, or use of the Products.

                                       5
<PAGE>

                    If Sheffield or its permitted sublicensees shall sell any of
                    the Products  together with other  products to third parties
                    in a particular  country and the price  attributable  to the
                    Products  is less than the  average  price of "arms  length"
                    sales of the Products  alone in the  particular  country for
                    the  reporting  period in which such sales occur (such sales
                    to be excluded from the  calculation of the average price of
                    "arms  length"  sales),  NSP for any such sales shall be the
                    average  price of "arms  length"  sales by  Sheffield or its
                    Affiliates of the Products  alone and in the country  during
                    the reporting period in which such sales occur.

                    "Party" shall mean Newco,  Sheffield or Elan as the case may
                    be.  "Parties"  shall mean any two of Newco,  Sheffield  and
                    Elan.

                    "Plan"  shall  mean  the   business   plan  and  program  of
                    development  agreed to by the  Parties  and  attached to the
                    Elan  License  Agreement  as Appendix C, with respect to the
                    research, development,  prosecution and commercialization of
                    the Products.

                    "Products"  shall mean all devices and products or any parts
                    or components thereof (including,  without  limitation,  any
                    and all compounds  and/or drug products  delivered  with, by
                    and/or  via  the   Products)   that  are  used,   developed,
                    manufactured,  offered  for sale and/or sold by or on behalf
                    of Sheffield  and/or its  permitted  sublicensees,  and that
                    utilize,  incorporate,  apply  and/or are based on the Newco
                    Intellectual  Property, the Sheffield Intellectual Property,
                    and/or the Elan Intellectual Property.

                    "Project"  shall mean all  activity as  undertaken  by Elan,
                    Sheffield  and Newco in order to  develop  the  Products  in
                    accordance with the Plan.

                    "Sheffield"  shall mean  Sheffield  Pharmaceutical,  Inc., a
                    Delaware corporation.

                    "Sheffield  Intellectual  Property" shall mean the Sheffield
                    Know-How and/or the Sheffield Patent Rights.

                    "Sheffield Know-How" shall mean all knowledge,  information,
                    trade secrets,  data and expertise  relating to the Systemic
                    Pulmonary Field, other than compounds,  that is possessed by
                    Sheffield,  or from time to time, developed or invented (but
                    not acquired) by or on behalf of Sheffield  during the Term,
                    including  without  limitation,  the  Trademark,   Sheffield
                    Project  Know-How,  and  clinical  data  and  test  results,
                    whether or not  covered by any  patent,  copyright,  design,
                    trademark,  trade secret or other industrial or intellectual
                    property rights.

                    "Sheffield  Patent Rights" shall mean all patents and patent
                    applications  related to the Systemic Pulmonary Field, other
                    than compounds,  that are owned by or licensed by Sheffield.
                    Sheffield  Patent Rights shall also include all  extensions,
                    continuations,  continuations-in-part,  divisionals, patents
                    of  addition,   reexaminations,   re-issues,   supplementary
                    protection  certificates  and foreign  

                                       6
<PAGE>
                    counterparts of such patents and patent applications and any
                    patents  issuing  thereon  and  extensions  of  any  patents
                    licensed  hereunder  (and shall for the  avoidance  of doubt
                    include the Sheffield  Project Patent Rights and such patent
                    and  patent  applications   relating  to  the  MSI  Delivery
                    System).

                    "Sheffield/Newco  License  Agreement" shall mean the License
                    Agreement,  dated even date herewith, among Sheffield, Newco
                    and Elan  pursuant  to,  among other  things,  Sheffield  is
                    sublicensing  certain   intellectual   property  rights  and
                    know-how  to  Newco  in   accordance   with  the  terms  and
                    conditions of said agreement.

                    "Sheffield  Project  Know-How"  shall  mean  all  knowledge,
                    information,  trade secrets, data and expertise which is not
                    generally known to the public owned or to be developed by or
                    on behalf  of  Sheffield  in  connection  with the  Project,
                    including  clinical  data,  whether  or not  covered  by any
                    patent, copyright, design, trademark, trade secret, or other
                    industrial or intellectual property rights.

                    "Sheffield  Project Patent Rights" shall mean any patents or
                    patent applications  related to the Systemic Pulmonary Field
                    that are owned or  developed  by or on  behalf of  Sheffield
                    under this Agreement and pursuant to the Project.

                    "Siemens" shall mean Siemens  Aktiengesellsehaft,  a company
                    organized under the laws of Germany.

                    "Siemens License Agreement" shall mean the license Agreement
                    dated February 21, 1997 between Sheffield and Siemens.

                    "Siemens  Supply  Agreement"  shall  mean the  Basic  Supply
                    Agreement  dated  March  21,  1997,  between  Sheffield  and
                    Siemens.

                    "Steering Committee" shall have the meaning set forth in the
                    Newco  Development  Agreement,  dated  even  date  herewith,
                    between Sheffield and EIS.

                    "Systemic  Pulmonary  Field"  shall  mean  the  practice  of
                    delivering  therapeutic  entities  via the  lung,  with  the
                    primary intention of making them systemically available.

                    "Technological Competitor" shall mean any entity (including,
                    if  applicable,   Zambon  Group  S.p.A)  that  substantially
                    engages or  proposes  to  substantially  engage  directly or
                    indirectly  in the  areas  of  drug  delivery,  neurological
                    therapies,  pain therapies,  acute care,  and/or oncology in
                    the pharmaceutical industry.

                    "Term"  shall  have the  meaning  set forth in  Article  8.5
                    below.

                    "Territory" shall mean all of the countries of the world.

                                       7
<PAGE>
                    "Topical   Pulmonary  Field"  shall  mean  the  practice  of
                    delivering  respiratory  therapeutic  entities  via the lung
                    with the  primary  intention  of making them  available  for
                    local respiratory therapeutic effect on the lung.

                    "Trademark"  shall mean the  trademark(s) as may be selected
                    by Sheffield which has been or may be registered by Newco in
                    one or more countries in the Territory.

                    "UPDAS  Technology"  (Ultrasonic  Pulmonary Drug  Absorption
                    System)  shall mean a system  intended to enhance  pulmonary
                    delivery  via  inhalation  by applying  [text omitted].

                    "$" shall mean United States Dollars.

          1.2.      INTERPRETATION.  In  this  Agreement,  the  following  shall
                    apply:

                    1.2.1.    the  singular  includes the plural and vice versa,
the  masculine  includes the feminine and vice versa and  references  to natural
persons include corporate bodies, partnerships and vice versa;

                    1.2.2.    any  reference  to an Article or  Appendix  shall,
unless  otherwise  specifically  provided,  be to a Article or  Appendix of this
Agreement; and

                    1.2.3.    the  headings  of this  Agreement  are for ease of
reference only and shall not affect its construction or interpretation.

2.     ARTICLE II :  THE LICENSE
       -------------------------

          2.1.      Subject to the terms and  conditions  of this  Agreement and
the  rights of Elan  under the  Definitive  Documents,  Newco  hereby  grants to
Sheffield for the Term, and Sheffield hereby accepts,  an exclusive,  sublicense
of the  Newco  Intellectual  Property  (and a  license  for the ADDS  Technology
component of the Newco Intellectual  Property) in the Field for the Territory to
develop, make, have made, manufacture, have manufactured,  package, use, import,
export,  promote,  distribute,  market, offer for sale, and sell the Products in
the Territory.

Except for an assignment or sublicense to Elan in accordance with this Agreement
and  the  Definitive  Documents,  Sheffield  may not (i)  assign  the  licenses,
sublicenses  and rights granted to it herein without the prior written  approval
of Newco and Elan,  which  approval may be withheld  for any reason  whatsoever,
and/or (ii) sublicense the licenses, sublicenses and rights granted to it herein
without the prior written  approval of Newco and Elan,  which approval shall not
be unreasonably withheld. Sheffield shall remain responsible for all of the acts
and omissions of its permitted sublicensees.  Subject to Elan's rights under the
Definitive  Documents,  Newco shall be  entitled  to use the Newco  Intellectual
Property  and all  technical  and  clinical  data  or  improvements  thereto  in
connection  with (i) Newco's  commercial  arrangements  for the  Products in any
country


                                       8
<PAGE>
that ceases to be a part of the  Territory,  or any country in the  Territory in
the event of the  expiration or sooner  termination of this  Agreement,  or (ii)
Newco's  commercial  arrangements  for  products  outside  of  the  Field.  Such
commercial  arrangements referred to in the immediately preceding sentence shall
include  the right to  research,  develop,  manufacture,  offer for sale,  sell,
license or otherwise market the Products.

          2.2.      Elan shall have the right to cause Newco to enforce  Newco's
rights against  Sheffield  hereunder.  This Agreement shall either  terminate or
survive  the  termination  of the Elan  License  Agreement  as  follows:  (i) if
Sheffield is in default or breach of any of its obligations,  representations or
warranties under the Definitive  Documents beyond any applicable cure period, or
if Elan terminates the Elan License Agreement under Section 8.6.2 thereof, or if
Elan  terminates  this  Agreement  pursuant to Article  8.5.2 (B) or (C) of this
Agreement,  then Elan shall have a right to immediately  terminate the licenses,
sublicenses  and any other rights  whatsoever  granted to  Sheffield  hereunder,
provided, however, that Elan agrees to enter into licenses with all sublicensees
of  Sheffield  on terms no less  favorable  to the  sublicensees  than the terms
contained  in  the  sublicensees'  agreements  with  Sheffield;   provided  such
sublicense  agreements  have  been  approved  by Elan in  accordance  with  this
Agreement  (ii) if Elan  acquires 100% of Newco's  Common Stock,  or if Elan and
Sheffield  mutually agree in accordance  with an orderly  windup of Newco,  then
Elan shall not have the right to terminate  the  licenses,  sublicenses  and any
other rights whatsoever granted to Sheffield  hereunder (except as otherwise set
forth herein), and (iii) upon the occurrence of any other event not set forth in
subsections (i) and (ii) above, Sheffield and Elan shall negotiate in good faith
with respect to the  survival or  termination  of the  licenses and  sublicenses
granted to Sheffield hereunder.  If this Agreement shall survive the termination
of the Elan  License  Agreement  in  accordance  with  this  Article  2.2,  then
Sheffield and Elan shall enter into a License  Agreement upon the same terms and
conditions as this Agreement.

          2.3.      Notwithstanding  anything contained in this Agreement to the
contrary,  Elan  shall  have  the  right of first  negotiation  to  manufacture,
package, use, import, export, promote,  distribute,  market, offer for sale, and
sell all Products in the Field  (including  products that utilize,  incorporate,
apply and/or are based on the Newco  Intellectual  Property and/or the Sheffield
Intellectual  Property)  outside  of the  United  States.  Such  right  of first
negotiation  shall be exercised as follows:  

                    2.3.1. (A) If Sheffield intends to develop a Product that is
subject to Elan's right of first negotiation,  then Sheffield  immediately shall
notify Elan in writing that Elan may elect to enter into  negotiations  referred
to in this Article 2.3, or (B) if Sheffield,  on its own behalf (and/or together
with  Newco),  has  developed a Product that is subject to Elan's right of first
negotiation,  then at such time that Sheffield  determines in good faith that it
wishes to  commercialize  the Product  itself,  with a third party or otherwise,
then,  Sheffield  shall notify Elan in writing that Elan may elect to enter into
negotiations  referred to in this Article 2.3,  subject to Elan  satisfying  the
reasonable requirements of Sheffield's strategic commercial plan with respect to
such Product in terms of formulation,  manufacturing  and marketing.  Elan shall
indicate its desire to enter into such negotiations pursuant to this Article 2.3
by delivering  written notice to Sheffield within forty-five (45) days of Elan's
receipt of the written  notification  from  Sheffield to Elan. If Elan elects to
enter into such  negotiations,  the Parties  shall  negotiate  in good faith the
terms of an applicable agreement.

                                       10
<PAGE>
                    2.3.2.  If, despite such good faith  negotiations,  Elan and
Sheffield do not reach  agreement  on the terms of such an agreement  within six
(6) months from the notification in writing by Sheffield to Elan, then Sheffield
shall be free to offer a third  party  (other  than a  Technological  Competitor
unless  consented to by Elan which consent shall not be  unreasonably  withheld,
and otherwise  subject to the terms and conditions of this  Agreement)  terms to
develop and commercialize,  as applicable,  such Product in the Territory, which
terms when taken as a whole,  are more favorable to Sheffield than the principal
terms of the last written proposal offered to Sheffield by Elan, or by Sheffield
to Elan,  as the case may be. Prior to entering  into such an  agreement  with a
third party, Sheffield shall promptly notify Elan, in writing and in confidence,
of the  principal  terms of such  agreement  and the identity of the third party
with whom  Sheffield  intends to  contract.  Elan  shall  have the right,  to be
exercised  within ten (10) days of receipt of such  notice,  to elect by written
notice to Sheffield,  to enter into an agreement  with  Sheffield  upon the same
terms and conditions  contained in Sheffield's notice to Elan. In the event Elan
does not elect to enter into such agreement, Sheffield shall have the right, for
a period of sixty (60) days from the  expiration  of the ten (10) day period set
forth  above,  to enter into an  agreement  with the third  party  specified  in
Sheffield's  notice  upon the same terms and  conditions  as  contained  in such
notice.

          2.4.      Sheffield shall market the Products in the Territory under a
Trademark,  which Trademark will be owned by Sheffield  subject to the terms and
conditions of this Agreement.

          2.5.      Newco  hereby   grants  to  Sheffield   during  the  Term  a
non-exclusive  royalty  free  license  in  the  Territory,  solely  for  use  in
connection  with  the  sale  of  the  Products,  to  use  Newco's  trademark  or
trademarks, on the following terms: 2.5.1. Sheffield shall as soon as it becomes
aware of any  infringement  give to Newco in writing full particulars of any use
or  proposed  use by any  other  person,  firm or  company  of a  trade  name or
trademark  or  promotional   or   advertising   activity  which  may  constitute
infringement.

                    2.5.2.  If Sheffield  becomes  aware that any other  person,
firm or company  alleges that such  trademark is invalid or that the use of such
trademark  infringes  any  rights  of  another  party or that the  trademark  is
otherwise  attacked,  Sheffield shall immediately give to Newco full particulars
in writing  thereof and shall make no comment or admission to any third party in
respect thereof.

                    2.5.3. Newco shall have the right to conduct all proceedings
relating to such trademark and shall in its sole discretion  decide what action,
if any, to take in respect of any  infringement or alleged  infringement of such
trademark or any other claim or  counter-claim  brought or threatened in respect
of the use or  registration  of such trademark.  Any such  proceedings  shall be
conducted at Newco's expense and for its own benefit.

                    2.5.4.  Nothing  contained in this Agreement  shall grant to
Sheffield any right, title, or interest in or to such trademark,  whether or not
specifically recognized or perfected under applicable laws. At no time during or
after the Term shall Sheffield  challenge or assist others to 

                                       10
<PAGE>

challenge any such trademark or the registration  thereof or attempt to register
any trademarks, marks, or trade names confusingly similar to any such trademark.
All displays of any such trademark  that Sheffield  intends to adopt shall first
be submitted to Newco for approval (which shall not be unreasonably withheld) of
design,  color,  and other  details,  or shall be exact  copies of those used by
Newco. In addition, Sheffield shall fully comply with all reasonable guidelines,
if any,  communicated by Newco  concerning the use of any such trademark as well
as all rules and regulations of such use throughout the Territory.

          2.6.      When packaged, and to the extent permitted by law, a product
label shall  include an  acknowledgement  that the Product is made under license
from  Newco.  Such  acknowledgement  shall  take into  consideration  regulatory
requirements and Sheffield's reasonable commercial requirements. Sheffield shall
wherever  possible  give due  acknowledgement  and  recognition  to Newco in all
printed  promotional  and other  material  regarding the Product such as stating
that the  Product  is under  license  from Newco and that the  applicable  Newco
technology  has been applied to the Products.  Sheffield  shall consult with and
obtain  the  written  approval  of Newco as to the  format  and  content  of the
promotional  and other  material  insofar as it relates to a description  of, or
other reference to, the  application of the Newco  Intellectual  Property,  such
approval  not to be  unreasonably  withheld or delayed.  The further  consent of
Newco shall not be required  where the format and content of such  materials  is
substantively  similar as the materials  previously furnished to and approved in
writing by Newco.

          2.7.      Sheffield  will  use  reasonable  best  efforts  to file and
obtain  Marketing  Authorizations  in a country in the Major  Markets as soon as
possible.   If  (i)  Sheffield  fails  to  obtain  Marketing   Authorization  to
commercialize  a Product in a country in the Major Markets within a commercially
reasonable  time, in accordance  with the Plan and as determined by the Steering
Committee,  or (ii) Sheffield fails to effect a national  commercial launch of a
Product in a country in the Major Markets within the period specified in Article
2.10 below then,  in such event,  Newco and  Sheffield  shall,  at the option of
Elan,  make  available  and  transfer  to Elan all of  Newco's  and  Sheffield's
respective data, information,  applications,  approvals, filings and the like to
permit Elan to commercialize such Product in the applicable country or countries
in the Major  Markets.  In such event Elan shall be entitled to an  irrevocable,
exclusive,  perpetual,  royalty  free,  license from Newco and  Sheffield to the
Newco  Intellectual  Property,  the  Sheffield  Intellectual  Property,  and the
Trademark to commercialize  such Product in the applicable  country in the Field
on the terms set forth in this  Article  2.7.  Elan may  sublicense  the  rights
granted to it pursuant to this Article 2.7 to one or more  sublicensees  without
the prior  consent  of Newco or  Sheffield.  Insofar as Newco or  Sheffield  has
licensed or acquired third party  technology,  Newco and Sheffield shall use all
commercially  reasonable  efforts to exclude or where applicable to minimize the
extent of any limitations or  restrictions on its use for such purposes,  and it
is understood  that no such  limitations or  restrictions  shall be permitted as
between Sheffield and Newco. In the event that Elan acquires such a license, the
Parties  shall  enter  into a  further  written  license  and  other  applicable
agreement which shall include  customary and reasonable terms in accordance with
this Article 2.7, and at Elan's option, Sheffield and Newco shall use their best
efforts to assign to Elan their  respective  rights under any third party supply
or other  agreement  relating  to such  Product,  or if  Sheffield  or Newco are
supplying  the Product or  

                                       11
<PAGE>
components thereof, Sheffield and Newco shall enter into good faith negotiations
with Elan to continue such supply.  

          2.8.      Sheffield  will use its  reasonable  best  efforts to obtain
Marketing Authorizations to commercialize the Products in the other countries of
the  Territory  (I.E.,  other than the Major  Markets)  that it selects,  having
regard to the effort and expenditure required to obtain Marketing Authorizations
for the Products and the commercial opportunities for the Products in such other
countries of the Territory.

          2.9.      In  general,  Sheffield  shall  employ  diligent  efforts to
research,  develop, register, market, promote and sell and maintain sales of the
Products in the  Territory and  Sheffield  shall employ a level of  advertising,
sales,  marketing,  and promotion efforts in each country in the Territory where
Marketing Authorization for Product has been obtained which is: (i) commensurate
with  that put  forth by other  pharmaceutical  manufacturers  for  products  of
similar market  potential in that country in the Territory,  and (ii) sufficient
with  respect to the  potential  for that  country to fully  exploit  the market
potential  for the  Product as  depicted  in the Plan and as  determined  by the
Steering  Committee.  Such Plan shall be reviewed and mutually  agreed to by the
Parties on an annual basis. 

          2.10.     Sheffield  shall  effect a national  commercial  launch of a
Product in a country in the Major  Markets  within one hundred and eighty  (180)
days of Marketing Authorization thereof in such country in the Major Markets. If
Sheffield does not make a national  commercial  launch of such Product in one or
more  countries of the Major Markets within the one hundred and eighty (180) day
period, the licenses granted to Sheffield  hereunder shall with thirty (30) days
written notice from Elan  terminate in the applicable  country and Elan shall be
entitled to commercialize  such Product in the Field and to receive a license to
the Newco Intellectual  Property,  the Sheffield  Intellectual  Property and the
Trademark in the applicable country on the terms set forth in Article 2.10.

          2.11.     If  Sheffield  indicates  to Newco and Elan that it does not
intend to obtain Marketing  Authorization  and  commercialize  the Products in a
particular  country  or  countries  of  the  Territory,  or  fails  to  commence
commercialization  in any  country  within  one  hundred  and (180)  days  after
receiving the required Marketing  Authorization therefor, Elan shall be entitled
to  license  from  Sheffield  and  Newco  the Newco  Intellectual  Property  the
Sheffield Intellectual Property, and the Trademark to commercialize the Products
in such countries on the terms set forth in Article 2.7.

3.   ARTICLE III:  DEVELOPMENT OF THE PRODUCT
     ----------------------------------------

          3.1.      Sheffield   shall  be  responsible   for  the  cost  of  the
development,  registration,  manufacture  and  marketing  of the  Products,  and
Sheffield shall use its reasonable best efforts to conduct the Project, as would
be deemed  commensurate  with the  achievement by Sheffield of the business aims
for a similar product of its own.

          3.2.      Sheffield shall mark or have marked the patent  number(s) on
all Products or otherwise  reasonably  communicate  to the trade  concerning the
existence  of any Elan Patent


                                       12
<PAGE>

Rights,  Sheffield Patent Rights, Newco Patent Rights or Joint Patent Rights for
the  countries  within the  Territory  in such a manner as to ensure  compliance
with,  and  enforceability  under,  all  applicable  laws,  including,   without
limitation,  35 United  States Code Section 287, as the same may be amended from
time to time.

4.   ARTICLE IV:  FINANCIAL PROVISIONS
     ---------------------------------

          4.1.      Newco hereby  irrevocably  assigns and  transfers to Elan or
Elan's  designee  Newco's  rights to receive  any  payments or  compensation  in
whatever form under this Agreement and, at Elan's option,  Sheffield  shall make
such payments directly to Elan or Elan's designee.

          4.2.      Royalty Payments.  
                    -----------------  

                    4.2.1. In  consideration  of the rights and licenses granted
to Sheffield to the Elan Patent  Rights by virtue of this  Agreement,  Sheffield
shall pay to Elan or Elan's  designee a single  payment of $[text  omitted] of a
product in the Field utilizing or based on the Elan Intellectual  Property first
receives  Marketing  Authorization in a country in the Major Markets.  Sheffield
shall immediately  notify Newco and Elan in writing upon Sheffield's  receipt of
such Marketing Authorization; and

                    4.2.2. In  consideration  of the rights and licenses granted
to Sheffield to the Elan Patent  Rights by virtue of this  Agreement,  Sheffield
shall pay to EIS or EIS's designee a single  payment of $[text  omitted] in cash
plus a milestone payment accrued thereon at the rate of [text omitted] per annum
through the date of payment shall be payable by Sheffield upon [text omitted].

                    4.2.3. In  consideration  of the rights and licenses granted
to Sheffield to the Elan Patent  Rights by virtue of this  Agreement,  Sheffield
shall  pay to Elan or  Elan's  designee  a  royalty  based on NSP  generated  by
Sheffield  or its sublicensees, [text omitted] percent of NSP for Products  that
utilize,  incorporate,  apply  and/or are based on the UPDAS  Technology  in the
Field and/or the Enhancing Technology in the Field.

          4.3.      ROYALTIES, PAYMENTS, REPORTS AND RECORDS
                    ----------------------------------------

                    4.3.1.  Within  forty  five  (45)  days  of the  end of each
quarter,  Sheffield  shall notify Newco and Elan of the NSP of Products  sold in
that preceding  quarter.  Payments shown by each calendar quarter report to have
accrued  shall be due on the date such report is due and shall be payable to the
designated  bank  account of Elan or its  designee as  instructed  by Elan.  All
payments due under this  Agreement  shall be made in United  States  Dollars and
shall be non-refundable to Sheffield.


                                       13

<PAGE>

                    4.3.2.  Sheffield  shall keep and shall cause its Affiliates
and  sublicensees  to keep  true and  accurate  records  of  gross  sales of the
Product,  the items deducted from the gross amount in  calculating  the NSP, the
NSP and the  royalties  payable to Elan under this  Article 4.  Sheffield  shall
deliver  to  Elan a  written  statement  thereof  within  forty-five  (45)  days
following the end of each calendar  quarter (or any part thereof in the first or
last calendar  quarter of this  Agreement) for such calendar  quarter.  The said
written statements shall set forth for each Product on country-by-country basis,
the calculation of the NSP from gross revenues during that calendar quarter, the
applicable  percentage  rate, a  computation  of the sums due to Elan,  and such
details of the  transactions  that are relevant to the calculations of NSP ("the
Statement"). The Parties' financial officers shall agree upon the precise format
of the Statement.

                    4.3.3.  Payments  due on NSP of the  Product  based on sales
amounts in a currency other than United States Dollars shall first be calculated
in the foreign currency and then converted to United States Dollars on the basis
of the exchange  rate in effect for the purchase of United  States  Dollars with
such  foreign  currency  quoted  in  the  Wall  Street  Journal  (or  comparable
publication  if not quoted in the Wall Street  Journal) with respect to the sale
of currency  of the  country of origin of such  payment for the day prior to the
date on which the payment by Sheffield is being made.

                    4.3.4. Any income or other taxes which Sheffield is required
by law to pay or withhold on behalf of Elan with  respect to  royalties  and any
other monies  payable to Elan under this  Agreement  shall be deducted  from the
amount of such NSP  payments,  royalties and other monies due.  Sheffield  shall
furnish  Elan with proof of such  payments.  Any such tax required to be paid or
withheld  shall be an  expense  of and  borne  solely by Elan.  Sheffield  shall
promptly provide Elan with a certificate or other documentary evidence to enable
Elan to support a claim for a refund or a foreign tax credit with respect to any
such tax so  withheld  or deducted by  Sheffield.  The Parties  will  reasonably
cooperate in completing  and filing  documents  required under the provisions of
any applicable tax treaty or under any other  applicable law, in order to enable
Sheffield to make such payments to Elan without any deduction or withholding.

                    4.3.5.  For the twenty four (24) month period  following the
close of each calendar year during the Term, Sheffield and its sublicensees will
provide  Elan's  independent  certified  accountants  (reasonably  acceptable to
Sheffield) with access,  during regular business hours and upon reasonable prior
request and  subject to the  confidentiality  provisions  as  contained  in this
Agreement,  to the books and records  relating to the  Products,  solely for the
purpose of verifying the accuracy and reasonable composition of the calculations
hereunder  for the  calendar  year then  ended,  including  the sums  payable by
Sheffield to Elan pursuant to Article 4.

                    4.3.6.  Any adjustment  required by such inspection shall be
made within  thirty (30) days of the agreement of the Parties or, if not agreed,
upon the  determination  of an arbitrator to whom any dispute under this Article
shall be submitted to arbitration.  If the adjustment payable to Elan is greater
than [text omitted] of the amount paid for the relevant period, then the cost to
Elan for the  inspection,  and if applicable the  arbitration,  shall be paid by
Sheffield  provided  that the costs of the  inspection  shall not  exceed  [text
omitted]. In

                                       14
<PAGE>

addition, Sheffield shall pay interest to Elan at the rate publicly announced by
Morgan  Guaranty Trust Company of New York at its principal  office as its prime
rate plus one per cent (1%)  (applicable  as of the date on which payment should
have been made pursuant to Article 4), from the date on which the payment should
have been made pursuant to Article 4.3.1 until the date of payment.

                    4.3.7.  Sheffield  shall  pay  interest  to Elan at the rate
publicly announced by Morgan Guaranty Trust Company of New York at its principal
office as its prime rate plus one per cent  (applicable  as of the date on which
payment  should have been made  pursuant to the  applicable  provisions  of this
Agreement)  from the date on which payment should have been made pursuant to the
applicable provision of this Agreement until the date of payment.

          4.4       If Sheffield  claims in good faith that one or more of its
devices,  products, parts or components thereof,  compounds and/or drug products
does not utilize,  incorporate,  apply or is not based on the Elan  Intellectual
Property,   the  Sheffield   Intellectual  Property  and/or  Newco  Intellectual
Property,  then Sheffield shall immediately notify Newco and Elan in writing. If
Newco or Elan disputes  Sheffield's claim, the Parties shall discuss such matter
in good faith and determine a mutually agreeable resolution.

5.   ARTICLE V:  REGISTRATION OF THE PRODUCT
     ---------------------------------------

          5.1.      Sheffield  shall at its sole cost file, and Sheffield  shall
use its  reasonable  best  efforts  to  prosecute  to  approval,  the  Marketing
Authorizations for the Products in the Territory in accordance with the Plan and
subject to the direction of the Steering Committee.

          5.2.      Sheffield  shall  maintain  at its own  cost  the  Marketing
Authorizations  during the period that  Sheffield  is  marketing  the  Products.
Sheffield  shall  continue  to  maintain  the  Marketing  Authorizations  in the
applicable  countries at Elan's request and expense,  if Elan acquires the right
to a license pursuant to Article 2.7 for such term thereafter  during which Elan
and/or its designees is marketing the Products,  and Sheffield  hereby agrees to
provide  to Elan,  or at  Elan's  option to  transfer  and  assign to Elan,  the
Marketing  Authorizations  (and  applications for regulatory  approvals)  within
thirty  (30)  days  of  the  submission  thereof  to the  applicable  authority.
Sheffield  shall  furnish  to Elan all  regulatory  filings  and other  material
correspondence with the FDA and other regulatory  authorities within thirty (30)
days of  submission.  

          5.3.      During   the    registration    procedure    for   Marketing
Authorizations,  Sheffield  shall keep Newco and Elan promptly and fully advised
of Sheffield's registration activities, progress and procedures. Sheffield shall
notify  Newco and Elan  immediately  of any  inspection  by the FDA or any other
regulatory  authority  of the  manufacturing  or  other  facilities  used in the
clinical  research,  manufacturing,   packaging,  storage  or  handling  of  the
Products.  Copies of all  correspondence  with the regulatory  authority will be
provided to Newco and Elan.

          5.4.      Sheffield  shall indemnify and hold harmless Newco and Elan,
their  respective  agents and  employees  from and against all claims,  damages,
losses,  liabilities  and  expenses  to which  Newco or Elan,  their  respective
agents,  and  employees  may  become  subject  related  to  or  


<PAGE>

arising out of Sheffield's  bad faith,  negligence or intentional  misconduct in
connection with the filing or maintenance of the Marketing Authorizations.


6.     ARTICLE VI:  WARRANTY AND INDEMNITY.
       ------------------------------------


          6.1.      Newco  represents  and  warrants  to  Sheffield  and Elan as
                    follows:


                    6.1.1.   Newco  is  duly  and   validly   existing   in  the
jurisdiction  of its  incorporation  and each  other  jurisdiction  in which the
conduct of its business requires such  qualification  (except where such failure
to so  qualify  shall not have a material  adverse  affect on the  business  and
assets  of  Newco),  and is in  compliance  with  all  applicable  laws,  rules,
regulations or orders relating to its business and assets;

                    6.1.2.  Newco has full  corporate  authority  to execute and
deliver this Agreement and to consummate the transactions  contemplated  hereby;
this Agreement has been duly executed and delivered by Newco and constitutes the
legal  and  valid  obligations  of Newco  and is  enforceable  against  Newco in
accordance with its terms;  and the execution,  delivery and performance of this
Agreement and the transactions contemplated hereby will not violate or result in
a default under or creation of lien or encumbrance under Newco's  memorandum and
articles of association or any material  agreement or instrument binding upon or
affecting  Newco or its  properties  or assets or any  applicable  laws,  rules,
regulations or orders affecting Newco or its properties or assets;

                    6.1.3.  Newco is not in material  default of its  memorandum
and articles of association,  any applicable material laws or regulations or any
material contract or agreement binding upon or affecting it or its properties or
assets and the  execution,  delivery and  performance  of this Agreement and the
transactions contemplated hereby will not result in any such violation;

                    6.1.4. Newco is the sole and exclusive owner or licensee of,
or controls  all right,  title and interest to the Newco  Patent  Rights  except
those  developed  under  Section  7.1(v)  hereof;  and to Newco's  knowledge and
belief, Newco is the sole owner or licensee of the Newco Know-How. Newco has the
right to grant the licenses and  sublicenses  granted  herein.  The Newco Patent
Rights,  and to Newco's knowledge and belief,  the Newco Know-How,  are free and
clear of any lien, encumbrances, security interest or restriction on the license
granted  herein.  Newco will not grant  during the Term,  any right,  license or
interest in and to the Newco  Intellectual  Property,  or any  portion  thereof,
inconsistent with the license and sublicense  granted herein; and to the best of
Newco's  knowledge there are no pending or threatened  adverse  actions,  suits,
investigations,  claims or  proceedings  brought  by one or more  third  parties
related to the Newco Intellectual Property as of Effective Date;

                    6.1.5.  Newco  represents and warrants that the execution of
this Agreement will not breach or in any way be inconsistent  with the terms and
conditions  of  any  license,  contract,  


                                       16
<PAGE>

understanding or agreement,  whether express,  implied,  written or oral between
Sheffield and any third party;

                    6.1.6.  EXCEPT AS SET FORTH IN THIS  ARTICLE  6.1,  NEWCO IS
GRANTING  THE  LICENSES AND  SUBLICENSES  HEREUNDER ON AN "AS IS" BASIS  WITHOUT
RECOURSE,  REPRESENTATION  OR WARRANTY  WHETHER  EXPRESS OR  IMPLIED,  INCLUDING
WARRANTIES  OF  MERCHANTABILITY  OR  FITNESS  FOR  A  PARTICULAR   PURPOSE,   OR
INFRINGEMENT  OF THIRD  PARTY  RIGHTS,  AND ALL SUCH  WARRANTIES  ARE  EXPRESSLY
DISCLAIMED.

          6.2.      Sheffield  represents  and  warrants  to Newco  and Elan the
following:


                    6.2.1.  Sheffield  is  duly  and  validly  existing  in good
standing in the jurisdiction of its incorporation and each other jurisdiction in
which the conduct of its business requires such qualification (except where such
failure to so qualify shall not have a material  adverse  affect on the business
and assets of  Sheffield),  and Sheffield is in compliance  with all  applicable
laws, rules, regulations or orders relating to its business and assets;

                    6.2.2. Sheffield has full corporate authority to execute and
deliver this Agreement and to consummate the transactions  contemplated  hereby;
this  Agreement has been duly executed and delivered and  constitutes  the legal
and valid  obligations  of Sheffield  and is  enforceable  against  Sheffield in
accordance with its terms;  and the execution,  delivery and performance of this
Agreement and the transactions contemplated hereby will not violate or result in
a default under or creation of lien or encumbrance under Sheffield's certificate
of incorporation,  by-laws or other organic documents, any material agreement or
instrument binding upon or affecting  Sheffield,  or its properties or assets or
any applicable laws, rules,  regulations or orders affecting  Sheffield,  or its
properties or assets;

                    6.2.3.  Sheffield  is  not in  default  of  its  charter  or
by-laws,  any  applicable  laws  or  regulations  or any  material  contract  or
agreement  binding  upon or  affecting  it or its  properties  or assets and the
execution,  delivery and  performance  of this  Agreement  and the  transactions
contemplated hereby will not result in any such violation;

                    6.2.4. Sheffield has not granted any option,  license, right
or  interest to any third  party  which  would  conflict  with the terms of this
Agreement.

                    6.2.5.  The  Products  shall  be  developed,   manufactured,
transported, stored, handled, packaged, marketed, promoted, distributed, offered
for  sale  and/or  sold  in  accordance  with  all  applicable  regulations  and
requirements of the FDA and foreign regulatory  authorities  including,  without
limitation,  cGCP, cGLP, cGMP regulations  relating thereto.  The Products shall
not be  adulterated  or  misbranded  as defined by the  Federal  Food,  Drug and
Cosmetic Act (or applicable  foreign law) and shall not be a product which would
violate any section of such Act if introduced in interstate commerce.

                                       17
<PAGE>

                    6.2.6.  Sheffield  is  fully  cognizant  of  all  applicable
statutes,  ordinances  and  regulations  of the  United  States of  America  and
countries  in the  Territory  with  respect to the  manufacture  of the Products
including,  but not limited to, the U.S. Federal Food, Drug and Cosmetic Act and
regulations  thereunder and similar statutes in countries  outside of the United
States, and cGMPs. Sheffield shall manufacture or procure the manufacture of the
Products in conformity with the Marketing  Authorizations  and in a manner which
fully  complies  with  all  United  States  of  America  and  foreign  statutes,
ordinances, regulations and practices.

          6.3.      Elan  represents  and  warrants to Newco and  Sheffield  the
following:


                    6.3.1. Elan is duly and validly existing in good standing in
the jurisdiction of its incorporation  and each other  jurisdiction in which the
conduct of its business requires such  qualification  (except where such failure
to so  qualify  shall not have a material  adverse  affect on the  business  and
assets of Elan),  and Elan is in compliance  with all  applicable  laws,  rules,
regulations or orders relating to its business and assets;

                    6.3.2.  Elan has full  corporate  authority  to execute  and
deliver this Agreement and to consummate the transactions  contemplated  hereby;
this  Agreement has been duly executed and delivered and  constitutes  the legal
and valid obligations of Elan and is enforceable against Elan in accordance with
its terms; and the execution, delivery and performance of this Agreement and the
transactions  contemplated  hereby will not violate or result in a default under
or creation of lien or encumbrance  under Elan's  certificate of  incorporation,
by-laws or other organic documents, any material agreement or instrument binding
upon or affecting  Elan,  or its  properties or assets or any  applicable  laws,
rules, regulations or orders affecting Elan, or its properties or assets;

                    6.3.3. Elan is not in default of its charter or by-laws, any
applicable  laws or  regulations or any material  contract or agreement  binding
upon or affecting it or its properties or assets and the execution, delivery and
performance of this Agreement and the transactions  contemplated hereby will not
result in any such violation.

          6.4.      Newco shall indemnify,  defend and hold harmless  Sheffield,
Elan and their  respective  officers,  directors,  employees and agents from all
actions,  losses,  claims,  demands,  damages,  costs and liabilities (including
reasonable  attorneys' fees) due to third party claims to which Newco or Elan is
or may become subject  insofar as they arise out of or are alleged or claimed to
arise  out of (i) any  breach  by Newco  of any of its  obligations  under  this
Agreement, (ii) any breach of a representation or warranty of Newco made in this
Agreement,  and (iii) any activities  conducted by Newco in connection  with the
Project,  except to the extent due to the  negligence  or willful  misconduct of
Sheffield or Elan.

          6.5.      Sheffield  shall  indemnify,  defend and hold harmless Newco
and Elan and their respective officers, directors, employees and agents from all
actions,  losses,  claims,  demands,  damages,  costs and liabilities (including
reasonable  attorneys' fees) due to third party claims to which Newco or Elan is
or may become subject  insofar as they arise out of or are alleged or claimed to
arise out of (i) any breach by  Sheffield of any of its  obligations  under this
Agreement,  

                                       18

<PAGE>

(ii) any breach of any  representation  or  warranty of  Sheffield  made in this
Agreement,  (iii) any activities  conducted by Sheffield in connection  with the
Project,  except to the extent due to the  negligence  or willful  misconduct of
Newco or Elan (which  negligence or willful  misconduct of Newco or Elan, as the
case may be,  shall not affect the  obligations  of Sheffield to the other party
hereunder),  and (iv) third party claims to which Newco or Elan is or may become
subject  insofar as they arise out of or are  alleged or claimed to arise out of
the  development,   manufacture,   transport,   packaging,   storage,  handling,
distribution,  promotion,  marketing,  offer  for sale or sale of the  Products,
including any product  liability  claim or any claim relating to any recall of a
Product.  

          6.6.      As  a  condition   of   obtaining   an   indemnity   in  the
circumstances set out above or elsewhere in the Agreement,  the Party seeking an
indemnity shall:

                    6.6.1.  fully and  promptly  notify  the other  Party of any
claim or proceeding, or threatened claim or proceeding;

                    6.6.2.  permit the indemnifying  Party to take full care and
control of such claim or proceeding;

                    6.6.3. reasonably assist in the investigation and defense of
such claim or proceeding;

                    6.6.4.  not compromise or otherwise settle any such claim or
proceeding  without the prior written consent of the other Party,  which consent
shall not be unreasonably  withheld;  and take all reasonable  steps to mitigate
any loss or liability in respect of any such claim or proceeding.

          6.7.      Notwithstanding  anything to the contrary in this Agreement,
Elan,  Sheffield  and Newco  shall not be liable to the other for any  punitive,
consequential  or  incidental  loss or  damage  (whether  for loss of  profit or
otherwise) by reason of any representation or warranty,  condition or other term
or any duty of  common  law,  or under  the  express  or  implied  terms of this
Agreement,  and whether occasioned by the negligence of the respective  Parties,
their employees or agents or otherwise.

7.   ARTICLE VII:   PATENTS
     ----------------------

          7.1.      TITLE:   Subject  to  the  terms  and   conditions  of  this
Agreement,  title to the various  inventions and  intellectual  property are set
forth below as follows:

                            (i) title to all inventions  and other  intellectual
property made solely by employees of Elan in  connection  with the Project shall
be owned by Elan;

                            (ii) title to all inventions and other  intellectual
property made solely by employees of Newco in connection  with the Project shall
be owned by Newco;

                                       19
<PAGE>

                            (iii) title to all inventions and other intellectual
property made solely by employees of Sheffield in  connection  with the Project,
other than set forth in Article 7.1(v) below, shall be owned by Newco including,
without limitation, any such inventions or intellectual property relating to the
ADDS Technology;

                            (iv) title to all inventions and other  intellectual
property made jointly by Elan and Newco in connection  with the Project shall be
owned by Newco;

                            (v) title to all inventions  and other  intellectual
property  made solely by Sheffield  employees or jointly by Newco and  Sheffield
employees relating to the MSI Delivery System shall be owned by Sheffield; and

                            (vi) all other  inventions  and  other  intellectual
property  made between  Sheffield  and Newco  employees in  connection  with the
Project  shall  be owned  by  Newco,  including,  without  limitation,  any such
inventions or intellectual property relating to the ADDS Technology.


          7.2.      FILING AND PROSECUTION OF PATENTS
                    ---------------------------------

                    7.2.1.  Each Party shall timely  inform the other in writing
of any improvement or development made by such Party relating,  respectively, to
the Sheffield Intellectual Property,  and/or Newco Intellectual Property so that
any  patent  protection  that  may be  available  for any  such  improvement  or
development is not compromised.

                    7.2.2.  Newco shall  prepare,  prosecute  and  maintain  all
patents applications and issued patents relating to the inventions, improvements
and other  intellectual  property set forth in paragraphs (ii),  (iii), (vi) and
(vi)  in  section  7.1.  With  respect  to  such  preparation,  prosecution  and
maintenance  activities,  Newco shall timely  apprise  Sheffield and Elan of the
status of any such activity and shall inform Sheffield and Elan of the status of
such  activity if such  inventions  have  application  in the Topical  Pulmonary
Field.  In the event Newco shall  decide not to seek patent  protection  for any
Newco Intellectual Property or Sheffield Intellectual Property,  Elan shall have
the  option to take  control of such  prosecution.  In the event that Elan shall
determine,  in good faith, that patents applications and issued patents relating
to the inventions,  improvements  and other  intellectual  property set forth in
paragraphs (ii), (iii), (vi) and (vi) in section 7.1.  predominantly  relates to
an area other than the Field,  Elan shall have the option to take control of the
preparation,  prosecution and maintenance of patent protection  directed to such
intellectual  property.  In the event that Elan does not  exercise  such  right,
Newco  shall  have  the  option  to take  responsibility  for  the  preparation,
prosecution and maintenance of patent  protection  directed to such Joint Patent
Rights.

                    7.2.3.  Sheffield shall prepare,  prosecute and maintain all
patents applications and issued patents relating to paragraph (v) in section 7.1
with respect to such preparation, prosecution and maintenance activities.

          7.3.      ENFORCEMENT OF  INTELLECTUAL  PROPERTY  RIGHTS;  THIRD PARTY
                    INFRINGEMENT
                    ------------------------------------------------------------

                                       20

<PAGE>

                    7.3.1.  Newco and Sheffield  shall promptly inform the other
in writing of any alleged  infringement  or  unauthorized  use of which it shall
become  aware  by a  third  party  of  Sheffield  Intellectual  Property,  Newco
Intellectual  Property,  Elan  Intellectual  Property and/or Joint  Intellectual
Property and provide such other with any available evidence of such unauthorized
activity.

                    7.3.2.  During the Term,  Sheffield  shall have the right to
pursue  at  its  own  expense  any  enforcement   activities  of  the  Sheffield
Intellectual  Property and/or the Newco  Intellectual  Property and/or the Joint
Intellectual  Property  within the  Field.  Newco  shall  agree to be named as a
necessary party in an action brought by and fully financed by Sheffield and will
reasonably  co-operate  with such action.  Sheffield  shall reimburse any out of
pocket  expenses  borne by Newco.  Should  Sheffield  decide not to enforce  the
Sheffield  Intellectual  Property and/or the Newco Intellectual  Property and/or
the Joint Intellectual Property within the Field, Newco may do so at its expense
and for its own benefit,  and Sheffield  will  reasonably  co-operate  with such
action. Any actual out of pocket expenses borne by Sheffield in cooperating with
such action shall be reimbursed by Newco.

          7.4.      INFRINGEMENT OF THIRD PARTY PATENTS
                    -----------------------------------

                    7.4.1.  In the event that a claim or proceedings are brought
against Sheffield by a third party alleging that the manufacture, use, offer for
sale, sale or other activity relating to the Products constitute an unauthorized
use of an  intellectual  property  right  owned  by  such a third  party  in the
Territory,  Sheffield  shall  promptly  advise  Newco and Elan of such threat or
suit.

                    7.4.2. Sheffield shall indemnify,  defend and hold Newco and
Elan harmless against all actions,  losses, claims, demands,  damages, costs and
liabilities   (including   reasonable   attorneys  fees)  relating  directly  or
indirectly  to all such claims or  proceedings  referred to in this Article 7.4;
provided that Newco or Elan shall not  acknowledge  to the third party or to any
other  person the  validity of any claims of such a third  party,  and shall not
compromise or settle any claim or proceedings relating thereto without the prior
written consent of Sheffield, not to be unreasonably withheld or delayed.


8A.          ARTICLE VIII(A):  REGARDING THE SHEFFIELD INTELLECTUAL PROPERTY
             ---------------------------------------------------------------

             8A.1   CONFORMANCE WITH SIEMENS AGREEMENTS
                    -----------------------------------

                    The Parties  acknowledge  that those Sheffield rights in and
to the Sheffield Intellectual Property which are derived from the Siemens Supply
Agreement and the Siemens License  Agreement,  are therefore  subject to all the
terms and conditions  thereof.  It is the Parties' express intent that the grant
by  Sheffield  of any such rights be  consistent  with the terms and  conditions
thereof and Sheffield's obligations thereunder.

             8A.2   AFTER ACQUIRED KNOW HOW
                    -----------------------

                                       21
<PAGE>

                    If Sheffield  acquires the rights to additional  know how or
patents in the Systemic  Pulmonary  Field after the execution of this Agreement,
it  agrees  to  negotiate  in good  faith  with  Elan  and  Newco a  license  or
sublicense, as appropriate, of such know how and patents to Newco for use in the
Systemic Pulmonary Field.

8.        ARTICLE VIII:  MISCELLANEOUS CLAUSES
          ------------------------------------


          8.1.      SECRECY
                    -------


                    8.1.1.  Any  information,  whether written or oral (provided
that oral information  shall be reduced to writing within one month by the party
giving the oral information and the written form shall be furnished to the other
party)  pertaining  to the  Product  that  has been or will be  communicated  or
delivered  by any  Party to the  other,  including,  without  limitation,  trade
secrets,  business  methods,  and cost,  supplier,  manufacturing  and  customer
information  (collectively,  "Confidential  Information"),  shall be  treated by
Newco, Sheffield and Elan, respectively,  as confidential information, and shall
not be disclosed or revealed to any third party whatsoever or used in any manner
except  as  expressly  provided  for  herein;   provided,   however,  that  such
confidential   information   shall  not  be  subject  to  the  restrictions  and
prohibitions  set forth in this  Article  to the extent  that such  Confidential
Information:

                            (A)         is  available  to the  public  in public
                                        literature   or   otherwise,   or  after
                                        disclosure  by one  Party  to the  other
                                        becomes  public  knowledge   through  no
                                        default  of  the  Party  receiving  such
                                        Confidential Information; or

                            (B)         was  known to the Party  receiving  such
                                        Confidential  Information  prior  to the
                                        receipt of such Confidential Information
                                        by such Party,  whether  received before
                                        or after the Effective Date; or

                            (C)         is obtained by the Party  receiving such
                                        Confidential  Information  from a  third
                                        party not  subject to a  requirement  of
                                        confidentiality  with  respect  to  such
                                        Confidential Information; or

                            (D)         is required to be disclosed pursuant to:
                                        (A)  any   order   of  a  court   having
                                        jurisdiction  and  power to  order  such
                                        information   to  be  released  or  made
                                        public;  or (B) any  lawful  action of a
                                        governmental or regulatory agency.

                    8.1.2.  Each  Party  shall  take all such  precautions  with
Confidential Information disclosed to it by the other Party as it normally takes
with its own confidential  information to prevent any improper disclosure of the
Confidential  Information disclosed to it by the other 


                                       23
<PAGE>

Party to any third party; PROVIDED,  HOWEVER, that such Confidential Information
may be disclosed within the limits required to obtain any authorization from the
FDA or any other United States of America or foreign  governmental or regulatory
agency or, with the prior written consent of the other Party, which shall not be
unreasonably  withheld,  or as may otherwise be required in connection  with the
purposes of this Agreement.

                    8.1.3.  Notwithstanding the above, each Party hereto may use
or disclose  Confidential  Information disclosed to it by the other Party to the
extent such use or disclosure is reasonably  necessary in filing or  prosecuting
patent  applications,   prosecuting  or  defending  litigation,  complying  with
applicable  governmental  regulations or otherwise submitting information to tax
or other  governmental  authorities,  conducting  clinical  trials,  or making a
permitted  sub-license or otherwise  exercising its rights  hereunder,  provided
that if a Party is required  to make any such  disclosure  of the other  party's
Confidential Information, other than pursuant to a confidentiality agreement, it
will given reasonable advance notice to the latter Party of such disclosure and,
except to the extent inappropriate in the case of patent applications,  will use
its best efforts to secure  confidential  treatment of such information prior to
its disclosure (whether through protective orders or otherwise).

                    8.1.4.  Each Party agrees that it will not use,  directly or
indirectly,  any Confidential  Information disclosed by the other Party pursuant
to this Agreement, other than as expressly provided herein.

                    8.1.5.  Newco and Sheffield will not publicize the existence
of this  Agreement  in any way  without the prior  written  consent of the other
subject to the disclosure  requirements of applicable laws and regulations.  The
Parties agree that promptly following the execution of this Agreement they shall
issue an  agreed  press  release  which  will  not  disclose  the  terms of this
Agreement.  In the event that one of the Parties wishes to make an  announcement
concerning the Agreement, that Party will seek the consent of the other Parties.
The terms of any such announcement shall be agreed in good faith.

          8.2.      CONFLICT.  IN THE  EVENT OF ANY  INCONSISTENCY  OR  CONFLICT
BETWEEN THE  PROVISIONS OF THE ELAN LICENCE  AGREEMENT ON THE ONE HAND,  AND THE
PROVISIONS OF THIS AGREEMENT AND THE  SHEFFIELD/NEWCO  LICENSE  AGREEMENT ON THE
OTHER HAND, THE TERMS OF THE ELAN LICENSE  AGREEMENT SHALL GOVERN AND CONTROL IN
ALL RESPECTS.

          8.3.      PARTIES  BOUND.  This  Agreement  shall be binding  upon and
inure for the benefit of Parties hereto, their successors and permitted assigns.

          8.4.      SEVERABILITY.  If any provision in this  Agreement is agreed
by the Parties to be, or is deemed to be, or becomes invalid,  illegal,  void or
unenforceable  under any law that is applicable  hereto, (i) such provision will
be  deemed  amended  to  conform  to  applicable  laws  so as to  be  valid  and
enforceable  or, if it cannot be so  amended  without  materially  altering  the
intention of the Parties, it will be deleted,  with effect from the date of such
agreement or such earlier date as the Parties may agree,  and (ii) the validity,
legality and enforceability of the remaining  provisions of this Agreement shall
not be impaired or affected in any way.

                                       23

<PAGE>

          8.5.      DURATION AND TERMINATION
                    ------------------------

                    8.5.1.  Subject to the other provisions of Article 8.5, this
Agreement  shall  remain in full force and  effect on a Product  by Product  and
country by country basis,  for a period  commencing as of the Effective Date and
expiring [text omitted] years from the date of the first commercial sale of such
Product in such country in the Territory, or [text omitted], whichever is longer
(the "Term").

                    8.5.2.  In  addition  to the  rights  of early or  premature
termination provided for elsewhere in this Agreement, the term of this Agreement
may be terminated immediately upon written notice of termination given by:

                              (A) the non-defaulting party in the event that the
other party shall:  (1) commit a material  breach or default  under a Definitive
Document,  which breach or default shall not be remedied  within sixty (60) days
after the receipt of written  notice  thereof by the party in breach or default;
or (2) have made a material  misrepresentation of any representation or warranty
contained herein or any Definitive Document; or

                              (B)  Elan,  in the  event  that  (1) a  change  of
"control" of Newco or Sheffield  shall occur (the term "control"  shall have the
meaning set forth in the  definition  of  "Affiliate"),  or (2) a  Technological
Competitor acquires directly or indirectly voting stock or equivalent securities
in Sheffield  or Newco  representing  [text  omitted] or more of the stock which
carries   entitlement  to  vote,  or  where  [text  omitted]  or  more  of  such
Technological  Competitor's  stock  or  equivalent  securities  is  acquired  by
Sheffield  or  Newco;  provided,  however,  that in the case of  [text  omitted]
(should [text omitted]  become a  Technological  Competitor),  the [text omited]
threshold set forth in this sentence  shall be deemed to be [text  omitted],  or
(3) if such Technological  Competitor otherwise controls Sheffield 's or Newco's
respective board of directors,  or either Sheffield or Newco otherwise  controls
such Technological Competitor's board of directors or similar governing body.

                              (C) Elan on the one hand,  and Sheffield and Newco
on the other hand, if Elan,  Sheffield or Newco (on an individual basis), as the
case  may  be,  shall  at  any  time  be   Insolvent,   dissolved,   liquidated,
discontinued, or when any proceeding is filed or commenced by either Party under
bankruptcy,  insolvency or debtor relief laws.  For purposes of this  Agreement,
"Insolvent" shall mean (1) the sum of a Party's debts exceeds its assets,  (2) a
Party is unable, or has reason to believe it is unable, to pay its debts as such
debts  mature,  or (3) a Party does not have  sufficient  capital  with which to
conduct its business.

                    8.5.3.  Upon exercise of those rights of  termination as set
forth in this  Agreement  with respect to any country or countries or the entire
Agreement  as the  case may be,  this  Agreement  shall,  subject  to the  other
provisions of the Agreement, automatically terminate forthwith in the applicable
country or  countries  or the entire  Agreement as the case may be, and be of no
further legal force or effect.
                                       24

<PAGE>

                    8.5.4. Upon termination of this Agreement:

                           (A)          all  confidentiality  provisions set out
                                        herein  shall  remain in full  force and
                                        effect for a period of five (5) years;

                           (B)          all  representations,   warranties,  and
                                        indemnities     shall     survive    the
                                        termination  of this agreement and shall
                                        remain in full force and effect;

                           (C)          termination  of this  Agreement  for any
                                        reason   shall  not  release  any  Party
                                        hereto from any liability  which, at the
                                        time of such  termination,  has  already
                                        accrued  to the other  Party or which is
                                        attributable  to a period  prior to such
                                        termination  nor  preclude  either Party
                                        from pursuing all rights and remedies it
                                        may  have  hereunder  or  at  law  or in
                                        equity  with  respect  to any  breach of
                                        this Agreement;

                           (D)          except as is necessary to enable Elan to
                                        exercise  the  licenses to be granted by
                                        Newco  and/or  Sheffield  to Elan  under
                                        this Agreement,  upon any termination of
                                        this  Agreement,  Newco,  Sheffield  and
                                        Elan shall promptly  return to the other
                                        Party   all   Confidential   Information
                                        received  from the other  Party  (except
                                        one copy of which  may be  retained  for
                                        archival purposes);

                           (E)          in   the   event   this   Agreement   is
                                        terminated  for  any  reason,  Sheffield
                                        shall have the right for a period of six
                                        (6) months from  termination  to sell or
                                        otherwise  dispose  of the  stock of any
                                        Product  then on hand,  which  such sale
                                        shall be subject to applicable  terms of
                                        this Agreement;

                           (F)          any sums that were due from Sheffield to
                                        Newco and Elan prior to the  exercise of
                                        the right to  terminate  this  Agreement
                                        shall be paid in full within  sixty (60)
                                        days of termination of this Agreement;

                           (G)          the rights of inspection and audit shall
                                        continue   in  force   for  the   period
                                        referred to in the  relevant  provisions
                                        of this Agreement;

                           (H)          At  Elan's   option,   except   for  the
                                        termination of this Agreement due to the
                                        Insolvency  of Elan,  or unless the Elan
                                        License  Agreement is terminated  due to
                                        the  breach by Elan  beyond  any cure or
                                        grace  period  in  accordance  with  the
                                        terms  thereof,  the Newco  Intellectual
                                        Property,  the 


                                       25
<PAGE>

                                        Newco  Improvements,   all  improvements
                                        developed or invented by or on behalf of
                                        Sheffield  during the Project and all of
                                        the   rights   whatsoever   granted   to
                                        Sheffield hereunder shall immediately be
                                        deemed to have been  reverted,  assigned
                                        and   transferred  to  Elan,   including
                                        rights in and to the Joint  Intellectual
                                        Property.

                           (H)          The following Articles shall survive the
                                        termination   or   expiration   of  this
                                        Agreement  for any  reason:  Article  1;
                                        Articles  2.2.,   2.7,  2.10  and  2.11;
                                        Articles  4.3.5  and  4.3.6  and  4.3.7;
                                        Article  5.4;  Article 6;  Article 7 and
                                        Article 8.

          8.6.      FORCE  MAJEURE.  Neither  Party to this  Agreement  shall be
liable for delay in the performance of any of its obligations  hereunder if such
delay  results from causes beyond its  reasonable  control,  including,  without
limitation,  acts of God,  fires,  strikes,  acts of war, or  intervention  of a
Government Authority,  non availability of raw materials,  but any such delay or
failure shall be remedied by such Party as soon as practicable.


          8.7.      RELATIONSHIP  OF THE  PARTIES.  Nothing  contained  in  this
Agreement  is intended  or is to be  construed  to  constitute  Elan,  Newco and
Sheffield  as partners or joint  venturers or either Party as an employee of the
other. Neither Party hereto shall have any express or implied right or authority
to  assume or create  any  obligations  on behalf of or in the name of the other
Party or to bind the other Party to any contract,  agreement or undertaking with
any third party.


          8.8.      AMENDMENTS.  No amendment,  modification  or addition hereto
shall be  effective  or  binding on any Party  unless  set forth in writing  and
executed by a duly authorized representative of all Parties.


          8.9.      WAIVER. No waiver of any right under this Agreement shall be
deemed  effective  unless  contained in a written  document  signed by the Party
charged  with such  waiver,  and no waiver of any  breach or  failure to perform
shall be deemed to be a waiver of any future  breach or failure to perform or of
any other right arising under this Agreement.


          8.10.     NO  EFFECT  ON  OTHER  AGREEMENTS.   No  provision  of  this
Agreement  shall be construed  so as to negate,  modify or affect in any way the
provisions  of any other  agreement  between  the  Parties  unless  specifically
referred to, and solely to the extent provided, in any such other agreement.


          8.11.     APPLICABLE  LAW. This Agreement is construed under and ruled
by the laws of the State of New York.  For the  purpose  of this  Agreement  the
Parties submit to the personal  jurisdiction of the United States District Court
for the State of New York. The Parties each further  irrevocably  consent to the
service of any complaint,  summons,  notice or other process by delivery thereof
to it by any manner in which notices may be given pursuant to this Agreement.

                                       26
<PAGE>

          8.12.     NOTICES.  Any notice to be given under this Agreement  shall
be sent in writing in English by registered airmail or faxed to:


                    -   Elan at

                        Elan Corporation plc.
                        Lincoln House,
                        Lincoln Place,
                        Dublin 2, Ireland.

                        Attention:  President, Elan Pharmaceutical Technologies,
                                    a division of Elan Corporation plc
                        Telefax :   353 1 662 4960


                    -   Newco at

                        Systemic Pulmonary Delivery, Ltd.
                        c/o Elan International Services, Ltd.
                        102 St. James Street
                        Flatts, Smith Parish FL04
                        Bermuda

                        Attention:  Chief Executive Officer


                    -   If to Sheffield, at

                        Sheffield Pharmaceutical, Inc.
                        425 South Woodsmill Road
                        St. Louis, Missouri 63017

                        Attention:   Chief Executive Officer
                        Telefax :   (314) 579-9799

                        with a copy to
                        Fitzpatrick, Cella, Harper & Scinto
                        30 Rockefeller Plaza
                        New York, NY 10112

                        Attention:  Michael P. Sandonato, Esq.
                        Telefax:  (212) 218-2200

                                       27
<PAGE>

                        or to such other  address(es) and telefax numbers as may
                        from time to time be  notified  by  either  Party to the
                        other hereunder.

          If a notice  is sent by  Sheffield  to  Newco  or  Newco to  Sheffield
pursuant to any agreements relating to the transactions  contemplated hereunder,
then Sheffield or Newco, as the case may be, shall send a copy of such notice to
Elan in accordance with the provisions of this Article.

          Any notice sent by  registered  air-mail  shall be deemed to have been
delivered  within seven (7) working  days after  dispatch and any notice sent by
telefax  (with  confirmed  answer  back) shall be deemed to have been  delivered
within twenty four (24) hours of the time of the  dispatch.  Notice of change of
address shall be effective upon receipt.

          8.13.     NO IMPLIED  RIGHTS.  No rights or  licenses  are  granted or
deemed  granted  hereunder or in  connection  herewith,  other than those rights
expressly granted in this Agreement.


          8.14.     FURTHER ASSURANCES.  At any time or from time to time on and
after  Effective  Date, each party shall at the request of the other (i) deliver
such records,  data or other  documents  consistent  with the provisions of this
Agreement,  (ii)  execute,  and  deliver  or  cause  to be  delivered,  all such
consents,  documents or further  instruments  of transfer or license,  and (iii)
take or cause to be taken all such  actions,  as the other Party may  reasonably
deem  necessary or desirable in order for it to obtain the full benefits of this
Agreement and the transactions contemplated hereby.


          8.15.     ENTIRE AGREEMENT . This Agreement  including its Appendices,
together  with the  Definitive  Documents,  sets forth the entire  agreement and
understanding  of the Parties with  respect to the subject  matter  hereof,  and
supersedes all prior  discussions,  agreements and writings in relating thereto,
including the letter of agreement of June 3, 1998.


                                       28
<PAGE>




          8.16.     COUNTERPARTS.   This   Agreement  may  be  executed  in  two
counterparts, each of which shall be deemed an original and which together shall
constitute one instrument.


          IN WITNESS  THEREOF the Parties hereto have executed this Agreement in
duplicate.


                                 SYSTEMIC PULMONARY DELIVERY, LTD



                                 By: /s/ Thomas M. Fitzgerald
                                     --------------------------
                                 Name:  Thomas M. Fitzgerald
                                 Title: Chairman



                                 SHEFFIELD PHARMACEUTICAL, INC.


                                 By: /s/ Thomas M. Fitzgerald
                                     --------------------------
                                 Name:  Thomas M. Fitzgerald
                                 Title: Chairman



                                 ELAN CORPORATION, PLC


                                 By: /s/ Thomas Lynch
                                     --------------------------
                                 Name:  Thomas Lynch
                                 Title: Chief Financial Officer
<PAGE>


                                   APPENDIX A

                               ELAN PATENT RIGHTS

                                NONE AT PRESENT

<PAGE>


                                   APPENDIX B

                               ELAN PATENT RIGHTS

                                 [text omitted]

<PAGE>
                                   APPENDIX C

                                    THE PLAN

                                 [text omitted]



                                    CERTAIN  PORTIONS HAVE BEEN OMITTED BASED ON
                                    A  REQUEST   FOR   CONFIDENTIAL   TREATMENT;
                                    OMITTED  PORTIONS FILED  SEPARATELY WITH THE
                                    SECURITIES AND EXCHANGE COMMISSION

                        LICENSE AND DEVELOPMENT AGREEMENT




                                 BY AND BETWEEN




                              ELAN CORPORATION, PLC
                                AN IRISH COMPANY


                                       AND

                        SYSTEMIC PULMONARY DELIVERY, LTD.
                                A BERMUDA COMPANY

                                       AND

                         SHEFFIELD PHARMACEUTICAL, INC.
                             A DELAWARE CORPORATION







                THIS AGREEMENT IS MADE THE 30TH DAY OF JUNE 1998











<PAGE>
                                TABLE OF CONTENTS



1.   ARTICLE I : DEFINITIONS...................................................1


2.   ARTICLE II :  THE LICENSE.................................................9


3.   ARTICLE III:  DEVELOPMENT OF THE PRODUCT.................................14


4.   ARTICLE IV:  FINANCIAL PROVISIONS........................................15


5.   ARTICLE V:  REGISTRATION OF THE PRODUCT..................................17


6.   ARTICLE VI:  WARRANTY AND INDEMNITY......................................18


7.   ARTICLE VII:   PATENTS...................................................21


8.   ARTICLE VIII(A):  REGARDING THE SHEFFIELD INTELLECTUAL PROPERTY..........24

9.   ARTICLE VIII : MISCELLANEOUS CLAUSES.....................................24






<PAGE>

LICENSE AND  DEVELOPMENT  AGREEMENT,  dated June 30,  1998,  by and between Elan
Corporation, plc., an Ireland corporation ("Elan"); Systemic Pulmonary Delivery,
Ltd., a Bermuda  corporation  ("Newco")  and Sheffield  Pharmaceutical,  Inc., a
Delaware corporation.

                                    RECITALS
                                    --------

         A.     ELAN  is  beneficially  entitled  to the  use  of  various
patents,  including  the ELAN PATENT RIGHTS  (capitalized  terms used herein are
defined below),  which have been granted or are pending under the  International
Convention  in relation  to the  development  and  production  of drug  delivery
devices and processes, and

         B.     ELAN is  knowledgeable  in the  development  of devices  and has
developed a unique  range of  delivery  systems  designed  to provide  newer and
better formulations of medicaments, and

         C.     SHEFFIELD possesses proprietary information,  including patented
and patent  applications,  relating  to  certain  technologies  in the  Systemic
Pulmonary Field, and

         D.     NEWCO  desires to enter  into a  licensing  agreement  with ELAN
pursuant to which NEWCO  shall have the right to  manufacture  and to market the
PRODUCTS in the TERRITORY, and

         E.     ELAN is prepared to license the ELAN PATENT  RIGHTS and the ELAN
KNOW HOW in the  TERRITORY  to  NEWCO.  The  PARTIES  entered  into a letter  of
agreement  dated June 3, 1998 (the  "LETTER  AGREEMENT")  pursuant  to which the
PARTIES agreed to enter into definitive documents, including this Agreement, and

         F.     As of the date of this Agreement, NEWCO, ELAN, EIS and SHEFFIELD
are  entering  into  several   agreements  with  respect  to  the   transactions
contemplated hereunder.

         The PARTIES agree as follows:

1.   ARTICLE I:  DEFINITIONS
     -----------------------

         1.1.   In the  present  Agreement  and  any  further  agreements  based
thereon between the PARTIES hereto, the following definitions shall apply:


                "ADDS TECHNOLOGY" shall mean all of the MDI-Aeroquip  technology
                for all pharmaceutical,  medicinal and therapeutic applications,
                acquired or to be  acquired  by NEWCO upon terms and  conditions
                approved in advance by EIS.

                "AFFILIATE"  shall mean any  corporation or entity  controlling,
                controlled  by or under the  common  control of ELAN or NEWCO as
                the case may be. For the  

                                       1
<PAGE>

                purpose of this  Agreement,  "control"  shall mean the direct or
                indirect  ownership of at least twenty-five (25%) percent of the
                outstanding  shares or other voting rights of the subject entity
                to elect  directors,  or if not meeting the preceding  criteria,
                any entity owned or  controlled by or owning or  controlling  at
                the maximum  control or ownership right permitted in the country
                where such entity exists.

                "AGREEMENT" shall mean this agreement (which expression shall be
                deemed to include the Recitals and Appendices hereto).

                "cGCP",  "cGLP" and  "cGMP"  shall mean  current  Good  Clinical
                Practices,  current Good  Laboratory  Practices and current Good
                Manufacturing Practices respectively.

                "COMPETING  PRODUCT" shall mean a product in the FIELDS which is
                not a PRODUCT  but which would  compete  with one or more of the
                PRODUCTS  in the  TERRITORY  such  that  sales of the  COMPETING
                PRODUCT would significantly reduce the sales of a PRODUCT.

                "CONFIDENTIAL  INFORMATION"  shall have the meaning set forth in
                Article 8.1 below.

                "DEFINITIVE  DOCUMENTS" shall mean this AGREEMENT;  the Security
                Agreement  from  Newco  to  Elan,  the  Pledge   Agreement  from
                Sheffield to Elan, the  Subscription  Agreement,  the Securities
                Purchase  Agreement,  Registration  Rights Agreement,  the Newco
                Development  Agreement,  all as  contemplated  under the  LETTER
                AGREEMENT  (as  defined in the  Recitals);  the  NEWCO/SHEFFIELD
                LICENSE AGREEMENT,  the SHEFFIELD/NEWCO  LICENSE AGREEMENT,  and
                any other  documents or agreements  executed in connection  with
                the transactions contemplated hereunder and thereunder.

                "EFFECTIVE DATE" shall mean June 30, 1998.

                "ELAN"  shall  mean  Elan  Corporation,   plc  and  any  of  its
                AFFILIATES.

                "EIS" shall mean Elan International Services, Ltd.

                "ELAN  INTELLECTUAL  PROPERTY" shall mean the ELAN PATENT RIGHTS
                and/or the ELAN KNOW-HOW.

                "ELAN  KNOW-HOW"  shall mean all knowledge,  information,  trade
                secrets, data and expertise relating to the UPDAS TECHNOLOGY and
                ENHANCING  TECHNOLOGY  and  that is owned  or  licensed  by ELAN
                (other than the EXCLUDED  TECHNOLOGY) as of the EFFECTIVE  DATE,
                including,  but not limited to,  clinical data and test results,
                and for the  avoidance  of doubt shall  


                                       2
<PAGE>

                include the ELAN PROJECT KNOW-HOW, whether or not covered by any
                patent,  copyright,  design,  trademark,  trade  secret or other
                industrial or intellectual  property rights,  but all subject to
                any contractual  obligations to unaffiliated  third parties that
                relates to specific  pharmaceuticals  that may be formulated for
                delivery by the UPDAS  TECHNOLOGY or ENHANCING  TECHNOLOGY  that
                ELAN has as of the EFFECTIVE DATE.

                "ELAN  PATENT   RIGHTS"   shall  mean  all  patents  and  patent
                applications   related  to  the  UPDAS  TECHNOLOGY   and/or  the
                ENHANCING  TECHNOLOGY that are owned or licensed by or on behalf
                of  Elan,   including  the  ELAN  PROJECT  PATENT  RIGHTS,  (but
                excluding  the  EXCLUDED  TECHNOLOGY),  which  patents as of the
                EFFECTIVE  DATE are set forth on  Appendix  A  attached  hereto;
                subject, however, to any contractual obligations to unaffiliated
                third parties that relates to specific  pharmaceuticals that may
                be formulated for delivery by the UPDAS  TECHNOLOGY or ENHANCING
                TECHNOLOGY  that ELAN has as of the EFFECTIVE  DATE. ELAN PATENT
                RIGHTS  shall  also  include  all   extensions,   continuations,
                continuations-in-part,     divisionals,     patents-of-additions
                reexaminations, re-issues, supplementary protection certificates
                and foreign counterparts of such patents and patent applications
                and any patents  issuing  thereon and  extensions of any patents
                licensed hereunder.

                "ELAN PROJECT  KNOW-HOW" shall mean all knowledge,  information,
                trade  secrets,   data  and  expertise  relating  to  the  UPDAS
                TECHNOLOGY and ENHANCING  TECHNOLOGY  that is owned or developed
                by or on behalf of ELAN (other than with respect to the EXCLUDED
                TECHNOLOGY)  pursuant to the PROJECT,  including but not limited
                to  clinical  data,  whether  or  not  covered  by  any  patent,
                copyright,  design, trademark,  trade secret or other industrial
                or intellectual property rights.

                "ELAN  PROJECT  PATENT  RIGHTS" shall mean any patents or patent
                applications   related  to  the  UPDAS  TECHNOLOGY   and/or  the
                ENHANCING TECHNOLOGY that are owned or developed by or on behalf
                of  Elan  (other  than  the  EXCLUDED  TECHNOLOGY),  under  this
                AGREEMENT and pursuant to the PROJECT.

                "ENHANCING  TECHNOLOGY" shall mean (i) the use of [text omitted]
                that is intended to facilitate or enhance systemic delivery of a
                drug  for  therapeutic   purposes,   when   co-administered  via
                inhalation with said drug via the pulmonary  route,  and/or (ii)
                the  use,  if  any,  of  [text  omitted]  that  is  intended  to
                facilitate or enhance topical delivery to the lung of a drug for
                therapeutic  purposes when  co-administered  via inhalation with
                said drug via the pulmonary route.

                "EXCLUDED  TECHNOLOGY"  shall mean all  knowledge,  information,
                trade  secrets,  data,  discoveries,  inventions,  improvements,
                ideas,  techniques,  processes,  formulations,  systems, designs
                and/or expertise,  and any and all other  intellectual  


                                       3
<PAGE>

                property  (including  patents and patent  applications  that are
                issued or that may be  issued),  relating  to motor  driven  dry
                powder inhalers and related powdered  storage  systems,  and any
                and  all  other  transactions  contemplated  under  the  License
                Agreement,  and the Protein and Peptide  Development  Agreement,
                each dated  September 5, 1994,  between [text omitted] and ELAN,
                as the same may be amended from time to time.

                "FDA" shall mean the United States Food and Drug  Administration
                or any other  successor  agency,  whose approval is necessary to
                market the PRODUCTS in the United States of America.

                "FIELDS"  shall mean the  SYSTEMIC  PULMONARY  FIELD  and/or the
                TOPICAL PULMONARY FIELD.

                "IN  MARKET"  shall  mean the sale of the  PRODUCTS,  whether by
                NEWCO or its  AFFILIATES,  or where  applicable  by a  permitted
                sublicensee, to a third party such as a wholesaler, distributor,
                managed care organization, hospital, pharmacy and/or the like.

                "JOINT  INTELLECTUAL  PROPERTY"  shall  mean the JOINT  KNOW-HOW
                and/or the JOINT PATENT RIGHTS.

                "JOINT  KNOW-HOW"  shall  mean all  knowledge,  information  and
                expertise  developed by at least two of the three PARTIES during
                the  TERM  relating  to the  FIELD  and in  accordance  with the
                PROJECT whether or not covered by any patent, copyright, design,
                trademark or other industrial or intellectual property rights.

                "JOINT   PATENT   RIGHTS"  shall  mean  any  patent  and  patent
                applications created, developed, conceived or otherwise invented
                by at least two of the three PARTIES  pursuant to the AGREEMENT,
                relating  to the FIELDS,  and in  accordance  with the  PROJECT.
                JOINT  PATENT   RIGHTS   shall  also  include  all   extensions,
                continuations,  continuations-in-part,  divisionals,  patents of
                additions,  reexaminations,  re-issues supplementary  protection
                certificates and foreign counterparts of such patents and patent
                applications  and any patents  issuing thereon and extensions of
                any patents licensed hereunder.

                "MAJOR  MARKETS"  shall mean the United  States of America,  the
                United  Kingdom of Great  Britain and Northern  Ireland,  Italy,
                France, Germany, Japan and/or Korea.

                "MARKETING   AUTHORIZATION"   shall  mean  the   procurement  of
                registrations  and  permits  required by  applicable  government
                authorities  in a country in the  TERRITORY  for the  marketing,
                sale, and distribution of a PRODUCT in such country.
 
                                      4
<PAGE>

                "MSI DELIVERY SYSTEM"shall mean SHEFFIELD'S Multi Dose Nebulizer
                comprising a device and dosator that  generally  conforms to the
                specifications  in Annex 2 to the SIEMENS  SUPPLY  AGREEMENT for
                use with medicines for the systemic  treatment of diseases,  and
                improvements thereto,  excluding the use of medicines for humans
                in treating respiratory disease and/or other lung disease, which
                exclusion   includes,   but  is  not  limited  to,  the  use  of
                anti-infectives.

                "NEWCO" shall mean Systemic Pulmonary Delivery,  Ltd. and any of
                its AFFILIATES.

                "NEWCO  INTELLECTUAL  PROPERTY"  shall  mean the NEWCO  KNOW-HOW
                and/or the NEWCO PATENT RIGHTS.

                "NEWCO  KNOW-HOW" shall mean all knowledge,  information,  trade
                secrets,  data and expertise that is possessed by NEWCO, or from
                time to time, developed, invented or otherwise acquired by or on
                behalf of NEWCO during the TERM,  including without  limitation,
                the ADDS TECHNOLOGY,  NEWCO PROJECT KNOW-HOW,  and clinical data
                and  test  results,  whether  or  not  covered  by  any  patent,
                copyright,  design, trademark,  trade secret or other industrial
                or intellectual property rights.

                "NEWCO/SHEFFIELD  LICENSE  AGREEMENT"  shall  mean  the  License
                Agreement,  dated as of the date  hereof,  entered  into between
                NEWCO and  SHEFFIELD  with respect to, among other  things,  the
                sublicense  of certain  rights in  accordance  with  Article 2.2
                below.

                "NEWCO  PATENT   RIGHTS"  shall  mean  all  patents  and  patent
                applications  owned  or to be owned  by,  or  licensed  or to be
                licensed by NEWCO.  NEWCO  PATENT  RIGHTS shall also include all
                extensions, continuations,  continuations-in-part,  divisionals,
                patents of additions,  reexaminations,  re-issues, supplementary
                protection certificates and foreign counterparts of such patents
                and patent  applications  and any  patents  issuing  thereon and
                extensions  of any  patents  licensed  hereunder.  NEWCO  PATENT
                RIGHTS shall further include any patents or patent  applications
                covering any improved  PRODUCTS or improved methods of making or
                using the PRODUCTS invented or acquired by NEWCO during the TERM
                (and shall for the  avoidance of doubt include the NEWCO PROJECT
                PATENT RIGHTS and such patent and patent  applications  relating
                to the ADDS TECHNOLOGY).

                "NEWCO PROJECT KNOW-HOW" shall mean all knowledge,  information,
                trade secrets, data and expertise owned or to be developed by or
                on behalf of NEWCO in  connection  with the  PROJECT,  including
                clinical data, whether or not covered by any patent,  copyright,
                design,   trademark,   trade  secret  or  other   industrial  or
                intellectual property rights.

                                       5
<PAGE>

                "NEWCO  PROJECT  PATENT RIGHTS" shall mean any patents or patent
                applications covering any improved PRODUCTS or methods of making
                or using the  PRODUCTS,  invented or acquired by or on behalf of
                NEWCO in connection with the PROJECT.

                "NSP" shall mean that sum determined by deducting from the gross
                amount billed for the PRODUCTS  (including,  without limitation,
                any and all sums billed for the  compound  and/or  drug  product
                delivered with, by and/or via the PRODUCTS;  sums billed for the
                supply of the PRODUCTS; and royalties receivable for the sale of
                the PRODUCTS) sold IN MARKET, the following:

                     (a) transportation charges or allowances, including freight
                     pick-up allowances, and packaging costs, if any;

                     (b) trade,  quantity or cash discounts,  service allowances
                     and independent  broker's or agent's  commissions,  if any,
                     allowed or paid;

                     (c) credits or allowances, if any, given or made on account
                     of price  adjustments,  returns up to ten per cent (10%) of
                     gross sales,  off-invoice  promotional discounts,  rebates,
                     any and all national,  federal,  state or local  government
                     rebates,  whether in existence  now, or enacted at any time
                     during the term of this Agreement; and

                     (d) any tax (other than income or corporation  tax), excise
                     or governmental  charge upon or measured by the production,
                     import, export, sale,  transportation,  delivery, or use of
                     the PRODUCTS.

                If NEWCO or its  permitted  sublicensees  shall  sell any of the
                PRODUCTS  together  with other  products  to third  parties in a
                particular country and the price attributable to the PRODUCTS is
                less  than  the  average  price of  "arms  length"  sales of the
                PRODUCTS  alone  in the  particular  country  for the  reporting
                period in which such sales occur (such sales to be excluded from
                the  calculation  of the average price of "arms length"  sales),
                NSP for any  such  sales  shall  be the  average  price of "arms
                length" sales by NEWCO or its  AFFILIATES of the PRODUCTS  alone
                and in the  country  during the  reporting  period in which such
                sales occur.

                "PARTY" shall mean NEWCO,  SHEFFIELD or ELAN as the case may be.
                "PARTIES" shall mean NEWCO, SHEFFIELD and ELAN.

                "PLAN" shall mean the business  plan and program of  development
                agreed to by the PARTIES and attached hereto as Appendix B, with
                respect   to  the   research,   development,   prosecution   and
                commercialization of the PRODUCTS,  which PLAN shall be reviewed
                and mutually agreed to by the PARTIES on an annual basis.

                                       6
<PAGE>

                "PRODUCTS"  shall mean all devices and  products or any parts or
                components thereof (including,  without limitation,  any and all
                compounds and/or drug products delivered with, by and/or via the
                PRODUCTS) that are used,  developed,  manufactured,  offered for
                sale and/or sold by or on behalf of NEWCO  and/or its  permitted
                sublicensees,  and that utilize,  incorporate,  apply and/or are
                based  on  the  ELAN   INTELLECTUAL   PROPERTY,   the  SHEFFIELD
                INTELLECTUAL PROPERTY and/or the NEWCO INTELLECTUAL PROPERTY.

                "PROJECT"  shall  mean  all  activity  as  undertaken  by  ELAN,
                SHEFFIELD  and  NEWCO  in  order  to  develop  the  PRODUCTS  in
                accordance with the PLAN.

                "SHEFFIELD"  shall  mean  Sheffield   Pharmaceutical,   Inc.,  a
                Delaware corporation.

                "SHEFFIELD  INTELLECTUAL  PROPERTY"  shall  mean  the  SHEFFIELD
                KNOW-HOW and/or the SHEFFIELD PATENT RIGHTS.

                "SHEFFIELD  KNOW-HOW"  shall  mean all  knowledge,  information,
                trade  secrets,  data  and  expertise  related  to the  SYSTEMIC
                PULMONARY  FIELD,  other than  compounds,  that is  possessed by
                SHEFFIELD,  or from time to time, developed or invented (but not
                acquired) by or on behalf of  SHEFFIELD  during the TERM related
                to the SYSTEMIC  PULMONARY FIELD,  including  clinical data, and
                shall for the avoidance of doubt include the MSI DELIVERY SYSTEM
                and the SHEFFIELD  PROJECT  KNOW-HOW,  whether or not covered by
                any patent, copyright,  design, trademark, trade secret or other
                industrial or intellectual property rights.

                "SHEFFIELD/NEWCO  LICENSE  AGREEMENT  shall mean the  Sublicense
                Agreement,  dated  even date  herewith,  between  SHEFFIELD  and
                NEWCO,  pursuant to which,  among  other  things,  SHEFFIELD  is
                licensing to NEWCO certain intellectual property rights.

                "SHEFFIELD  PATENT  RIGHTS"  shall mean all  patents  and patent
                applications related to the SYSTEMIC PULMONARY FIELD, other than
                compounds,  that  are  owned or  licensed  by  SHEFFIELD,  which
                patents  as of the  EFFECTIVE  DATE are set forth on  Appendix C
                attached hereto.  SHEFFIELD PATENT RIGHTS shall also include all
                extensions, continuations,  continuations-in-part,  divisionals,
                patents of  addition,  re-issues,  reexaminations  supplementary
                protection certificates and foreign counterparts of such patents
                and patent  applications  and any  patents  issuing  thereon and
                extensions of any patents licensed  hereunder (and shall for the
                avoidance  of  doubt  include  patent  and  patent  applications
                relating to the MSI DELIVERY  SYSTEM and the  SHEFFIELD  PROJECT
                PATENT RIGHTS).

                                       7
<PAGE>

                "SHEFFIELD   PROJECT   KNOW-HOW"   shall  mean  all   knowledge,
                information,  trade secrets,  data and expertise relating to the
                SYSTEMIC  PULMONARY  FIELD that is owned or  developed  by or on
                behalf of SHEFFIELD in connection  with the PROJECT,  including,
                but not limited to, clinical data, whether or not covered by any
                patent,  copyright,  design,  trademark,  trade  secret or other
                industrial or intellectual property rights.

                "SHEFFIELD  PROJECT  PATENT  RIGHTS"  shall mean any  patents or
                patent applications related to the SYSTEMIC PULMONARY FIELD that
                are  owned  or  developed  by  or  on  behalf  of  SHEFFIELD  in
                connection with the PROJECT during the TERM.

                "SIEMENS"  shall  mean  Siemens  Aktiengesellsehaft,  a  company
                organized under the laws of Germany.

                "SIEMENS  LICENSE  AGREEMENT"  shall mean the license  Agreement
                dated February 21, 1997 between SHEFFIELD and SIEMENS.

                "SIEMENS SUPPLY AGREEMENT" shall mean the Basic Supply Agreement
                dated March 21, 1997, between SHEFFIELD and SIEMENS .

                "STEERING  COMMITTEE"  shall have the  meaning  set forth in the
                Newco Development Agreement,  dated even date herewith,  between
                SHEFFIELD and EIS.

                "SYSTEMIC PULMONARY FIELD" shall mean the practice of delivering
                therapeutic entities via the lung, with the primary intention of
                making them systemically available.

                "TECHNOLOGICAL  COMPETITOR" shall mean any entity (including, if
                applicable,  Zambon Group S.p.A) that  substantially  engages or
                proposes to  substantially  engage directly or indirectly in the
                areas of drug delivery,  neurological therapies, pain therapies,
                acute care, and/or oncology in the pharmaceutical industry.

                "TERM" shall have the meaning set forth in Article 8.6 below.

                "TERRITORY" shall mean all of the countries of the world.

                "TOPICAL  PULMONARY FIELD" shall mean the practice of delivering
                respiratory  therapeutic  entities via the lung with the primary
                intention  of  making  them  available  for  local   respiratory
                therapeutic effect on the lung.

                "TRADEMARK"  shall mean the  trademark(s)  as may be selected by
                NEWCO  which  has been or may be  registered  by NEWCO in one or
                more countries in the TERRITORY.

                                       8
<PAGE>

                "UPDAS TECHNOLOGY" (Ultrasonic Pulmonary Drug Absorption System)
                shall mean a system intended to enhance  pulmonary  delivery via
                inhalation   by   [text omitted] 

                "$" shall mean United States Dollars.

         1.2.   INTERPRETATION. In this Agreement, the following shall apply:

                         1.2.1.    the  singular  includes  the  plural and vice
                versa,  the  masculine  includes the feminine and vice versa and
                references  to  natural   persons  include   corporate   bodies,
                partnerships and vice versa;

                         1.2.2.    any  reference  to  an  Article  or  Appendix
                shall, unless otherwise  specifically  provided, be to a Article
                or Appendix of this Agreement; and

                         1.2.3.    the headings of this  Agreement  are for ease
                of  reference  only and shall not  affect  its  construction  or
                interpretation.

2.     ARTICLE II :  THE LICENSE
       -------------------------


          2.1.  Subject  to the terms and  conditions  of this  Agreement,  ELAN
hereby  grants to NEWCO for the TERM,  and NEWCO  hereby  accepts,  an exclusive
license of the ELAN INTELLECTUAL PROPERTY, only in the FIELDS, for the TERRITORY
to develop,  make, have made,  manufacture,  have  manufactured,  package,  use,
import,  export,  promote,  distribute,  market,  offer for  sale,  and sell the
PRODUCTS in the TERRITORY.

          2.2.  NEWCO may not  assign or  sublicense  the  licenses  and  rights
granted to it herein without the prior written  approval of ELAN, which approval
may be withheld for any reason whatsoever, provided, however, that Elan will not
unreasonably withhold its consent to any sublicense,  PROVIDED, FURTHER HOWEVER,
that simultaneously with the execution and delivery of this Agreement, NEWCO and
SHEFFIELD are entering into the  NEWCO/SHEFFIELD  LICENSE AGREEMENT  pursuant to
which NEWCO shall grant to SHEFFIELD an exclusive license or sublicense,  as the
case may be, to the intellectual  property rights,  including patent rights,  in
and to the NEWCO INTELLECTUAL  PROPERTY and ELAN INTELLECTUAL  PROPERTY and only
in the TOPICAL  PULMONARY  FIELD,  where the therapeutic  mechanism of action is
local to the lung, solely and specifically for asthma, cystic fibrosis,  chronic
obstructive  pulmonary disease and the use of anti-infectives  for the treatment
of  respiratory  infection.  ELAN hereby  consents to the license and sublicense
granted by NEWCO to SHEFFIELD  as set forth in this Article 2.2,  subject to the
terms and  conditions  of the  NEWCO/SHEFFIELD  LICENSE  AGREEMENT.  Subject  to
Article 2.2 of the NEWCO/SHEFFIELD  LICENSE AGREEMENT with respect to SHEFFIELD,
any  sublicense or other  agreement  permitted by this Article 2.2 shall survive
the  termination  of  this  Agreement  

                                       9

<PAGE>

as  follows:  upon  termination  of this  AGREEMENT,  ELAN shall,  with  NEWCO'S
assistance,  notify  each  permitted  sublicensee  of the  termination  of  this
AGREEMENT.  If a  sublicensee  elects  to  notify  ELAN  that  it  requires  the
continuation of the permitted sublicense granted to it by NEWCO pursuant to this
AGREEMENT,  ELAN shall promptly  negotiate  with such  sublicensee in good faith
with a view  to  entering  into a  direct  contractual  relationship  with  such
sublicensee.  Such agreement between ELAN and such sublicensee  shall, in ELAN'S
reasonable  discretion be on commercially  reasonable terms and shall be, to the
extent practicable, on terms no less favorable to the sublicensee than the terms
of such  sublicensee's  agreement  with  NEWCO,  and  shall  provide  that  such
sublicensee  shall take over the applicable  obligations  owed by NEWCO to ELAN.
Sales of PRODUCTS  payable to such a  sublicensee  in  relation to the  PRODUCTS
shall  constitute  NSP for the purpose of  calculating  the sums  payable by the
sublicensee to ELAN. If NEWCO does not continue, or procure the continuance,  of
the supply of the relevant PRODUCT to the said sublicensee, then NEWCO shall use
its reasonable  endeavors to ensure that ELAN or the  sublicensee can enter into
the  appropriate  supply  arrangements  with NEWCO or NEWCO'S  suppliers  of the
PRODUCTS  and the  components  thereof and grant ELAN a licence on the terms set
forth  in  Article  2.9  below.  

          2.3.  ELAN shall be entitled to use the ELAN INTELLECTUAL PROPERTY and
all technical and clinical data or  improvements  thereto in connection with (i)
ELAN's commercial arrangements for the PRODUCTS in any country that ceases to be
a part of the TERRITORY,  or in any country in the TERRITORY in the event of the
expiration or sooner  termination of this Agreement,  or (ii) ELAN'S  commercial
arrangements  for products outside of the FIELDS.  Such commercial  arrangements
referred to in the  immediately  preceding  sentence  shall include the right to
research,  develop,  manufacture,  offer for sale,  sell,  license or  otherwise
market the PRODUCTS.

          2.4.  NEWCO and SHEFFIELD will not market,  develop for market,  offer
for sale or sell a  COMPETING  PRODUCT  during  the TERM and for a period of one
year thereafter. Should NEWCO or SHEFFIELD market, develop for market, offer for
sale or sell a COMPETING  PRODUCT in the  TERRITORY,  ELAN reserves the right to
terminate the licenses granted to NEWCO hereunder.

          2.5.  Notwithstanding  anything  contained  in this  Agreement  to the
contrary,  ELAN  shall  have  the  right of first  negotiation  to  manufacture,
package, use, import, export, promote,  distribute,  market, offer for sale, and
sell all PRODUCTS  (including products that utilize,  incorporate,  apply and/or
are based on the  NEWCO  INTELLECTUAL  PROPERTY  and/or  SHEFFIELD  INTELLECTUAL
PROPERTY)  in the  SYSTEMIC  PULMONARY  FIELD that  relate to the areas of pain,
neurology,  oncology and acute care.  Such right of first  negotiation  shall be
exercised as follows:

                         2.5.1.    (A) If NEWCO  intends  to  develop  a PRODUCT
                that is subject to ELAN'S right of first negotiation, then NEWCO
                immediately  shall notify ELAN in writing that ELAN may elect to
                enter into negotiations  referred to in this Article 2.5, or (B)
                if NEWCO,  on its own behalf (and/or  together with  SHEFFIELD),
                has developed a PRODUCT that is subject to ELAN'S right of first
                negotiation,  then at such time that  NEWCO  determines  in good
                faith  that it  wishes  to  commercialize  the  PRODUCT  itself,
                whether with a third party or otherwise, then 

                                       10
<PAGE>

                NEWCO shall  notify ELAN in writing that ELAN may elect to enter
                into  negotiations  referred to in this Article 2.5.  ELAN shall
                indicate its desire to enter into such negotiations  pursuant to
                this Article 2.5 by  delivering  written  notice to NEWCO within
                forty-five   (45)  days  of  ELAN's   receipt  of  the   written
                notification  from NEWCO to ELAN.  If ELAN  elects to enter into
                such negotiations, the Parties shall negotiate in good faith the
                terms of an applicable agreement.

                         2.5.2.    If,  despite  such good  faith  negotiations,
                ELAN and  NEWCO do not reach  agreement  on the terms of such an
                agreement within six (6) months from the notification in writing
                by  NEWCO  to ELAN,  then  NEWCO  shall be free to offer a third
                party (other than a TECHNOLOGICAL COMPETITOR unless consented to
                by ELAN which consent shall not be  unreasonably  withheld,  and
                otherwise subject to the terms and conditions of this Agreement)
                terms to develop and commercialize,  as applicable, such PRODUCT
                in the  TERRITORY,  which terms when taken as a whole,  are more
                favorable to NEWCO than the principal  terms of the last written
                proposal  offered to NEWCO by ELAN,  or by NEWCO to ELAN, as the
                case may be.  Prior to entering  into such an  agreement  with a
                third party, NEWCO shall promptly notify ELAN, in writing and in
                confidence,  of the  principal  terms of such  agreement and the
                identity of the third party with whom NEWCO intends to contract.
                ELAN shall have the right, to be exercised  within ten (10) days
                of receipt of such notice,  to elect by written notice to NEWCO,
                to enter  into an  agreement  with NEWCO upon the same terms and
                conditions  contained  in NEWCO'S  notice to ELAN.  In the event
                ELAN does not elect to enter into such  agreement,  NEWCO  shall
                have  the  right,  for a  period  of sixty  (60)  days  from the
                expiration of the ten (10) day period set forth above,  to enter
                into an  agreement  with the third  party  specified  in NEWCO'S
                notice upon the same terms and  conditions  as contained in such
                notice.

          2.6   NEWCO  shall  market  the  PRODUCTS  in the  TERRITORY  under  a
TRADEMARK,  which  TRADEMARK  will be owned by NEWCO  subject  to the  terms and
conditions of this Agreement.

          2.7   ELAN  hereby  grants to NEWCO  during  the TERM a  non-exclusive
royalty free license in the  TERRITORY,  solely for use in  connection  with the
sale of the PRODUCTS, to use the "UPDAS"(TM)trademark, on the following terms:

                         2.7.1     NEWCO  shall as soon as it  becomes  aware of
                any infringement give to ELAN in writing full particulars of any
                use or proposed  use by any other  person,  firm or company of a
                trade name or trademark or promotional  or advertising  activity
                which may constitute infringement.

                         2.7.2     If NEWCO becomes aware that any other person,
                firm or company  alleges that such  trademark is invalid or that
                the use of such trademark  infringes any rights of another party
                or that the trademark is otherwise attacked or attackable, NEWCO
                shall  immediately  give to ELAN  full  particulars  in  writing
                thereof  and shall  make no comment  or  admission  to any third
                party in respect thereof.

                                       11
<PAGE>

                         2.7.3     ELAN  shall  have the  right to  conduct  all
                proceedings  relating  to such  trademark  and shall in its sole
                discretion decide what action, if any, to take in respect of any
                infringement  or alleged  infringement  of such trademark or any
                other claim or counter-claim brought or threatened in respect of
                the use or registration of such trademark.  Any such proceedings
                shall be conducted at ELAN'S expense and for its own benefit.

                         2.7.4     Nothing  contained  in this  Agreement  shall
                grant to NEWCO  any  right,  title,  or  interest  in or to such
                trademark,  whether or not specifically  recognized or perfected
                under  applicable  laws.  At no time during or after the term of
                this  Agreement  shall  NEWCO  challenge  or  assist  others  to
                challenge  any such  trademark  or the  registration  thereof or
                attempt  to  register  any  trademarks,  marks,  or trade  names
                confusingly  similar to any such trademark.  All displays of any
                such  trademark  that  NEWCO  intends  to adopt  shall  first be
                submitted to ELAN for approval  (which shall not be unreasonably
                withheld) of design, color, and other details, or shall be exact
                copies of those used by ELAN.  In  addition,  NEWCO  shall fully
                comply with all reasonable  guidelines,  if any, communicated by
                ELAN  concerning  the use of any such  trademark  as well as all
                rules and regulations of such use throughout the Territory.

                         2.7.5     The  rights   granted  to  NEWCO  under  this
                Article 2.7 shall  automatically  terminate  on  termination  or
                expiration  of this  Agreement  with  respect  to a PRODUCT in a
                country in the TERRITORY.

          2.8   When  packaged,  and to the extent  permitted  by law, a product
label shall  include an  acknowledgement  that the PRODUCT is made under license
from  ELAN.  Such  acknowledgement  shall  take  into  consideration  regulatory
requirements  and  NEWCO's  reasonable  commercial  requirements.   NEWCO  shall
wherever  possible  give  due  acknowledgement  and  recognition  to ELAN in all
printed  promotional  and other  material  regarding the PRODUCT such as stating
that the  PRODUCT  is under  license  from  ELAN  and that the  applicable  ELAN
technology has been applied to the PRODUCTS. NEWCO shall consult with and obtain
the written approval of ELAN as to the format and content of the promotional and
other material insofar as it relates to a description of, or other reference to,
the  application  of the ELAN  INTELLECTUAL  PROPERTY,  such  approval not to be
unreasonably  withheld  or  delayed.  The  further  consent of ELAN shall not be
required where the format and content of such materials is substantively similar
as the materials previously furnished to and approved in writing by ELAN.

          2.9   NEWCO  will use  reasonable  best  efforts  to file  and  obtain
MARKETING  AUTHORIZATIONS in the MAJOR MARKETS as soon as possible. If (i) NEWCO
fails to obtain MARKETING  AUTHORIZATION to commercialize a PRODUCT in a country
in the MAJOR MARKETS within a commercially  reasonable  time, in accordance with
the PLAN and as  determined  by the STEERING  COMMITTEE,  or (ii) NEWCO fails to
effect a  national  commercial  launch  of a PRODUCT  in a country  in the MAJOR
MARKETS  within the period  specified in Article 2.12 below then, in such event,
NEWCO and SHEFFIELD shall, at the option of ELAN, make available and transfer to
ELAN all of NEWCO'S and SHEFFIELD'S respective data, information,  applications,
approvals,  filings and the like to permit ELAN to 

                                       12
<PAGE>

commercialize  such PRODUCT in the applicable  country or countries in the MAJOR
MARKETS.  In such event ELAN shall be  entitled  to an  irrevocable,  exclusive,
perpetual,  royalty  free,  license  from  NEWCO  and  SHEFFIELD  to  the  NEWCO
INTELLECTUAL  PROPERTY, the SHEFFIELD INTELLECTUAL PROPERTY and the TRADEMARK to
commercialize  such PRODUCT in the applicable country in the FIELDS on the terms
set out in this  Article  2.9.  ELAN may  sublicense  the  rights  granted to it
pursuant  to this  Article  2.9 to one or more  sublicensees  without  the prior
consent of NEWCO or  SHEFFIELD.  Insofar as NEWCO or  SHEFFIELD  has licensed or
acquired third party technology,  NEWCO and SHEFFIELD shall use all commercially
reasonable  efforts to exclude or where applicable to minimize the extent of any
limitations or restrictions  on its use for such purposes,  and it is understood
that no such limitations or restrictions shall be permitted as between SHEFFIELD
and NEWCO.  In the event that ELAN  acquires  such a license,  the PARTIES shall
enter into a further written license and other applicable  agreement which shall
include  customary and reasonable terms in accordance with this Article 2.9, and
at ELAN'S option,  SHEFFIELD and NEWCO shall use their best efforts to assign to
ELAN their  respective  rights under any third party  supply or other  agreement
relating to such PRODUCT.

          2.10  NEWCO will use its reasonable  best efforts to obtain  MARKETING
AUTHORIZATIONS  to  commercialize  the  PRODUCTS in the other  countries  of the
TERRITORY (I.E., other than the MAJOR MARKETS) that it selects, having regard to
the effort and expenditure  required to obtain MARKETING  AUTHORIZATIONS for the
PRODUCTS  and the  commercial  opportunities  for  the  PRODUCTS  in such  other
countries of the TERRITORY.

          2.11  In general, NEWCO and SHEFFIELD shall employ diligent efforts to
research,  develop, register, market, promote and sell and maintain sales of the
PRODUCTS in the TERRITORY and NEWCO shall employ a level of advertising,  sales,
marketing,  and  promotion  efforts  in  each  country  in the  TERRITORY  where
MARKETING AUTHORIZATION for PRODUCT has been obtained which is: (i) commensurate
with that used by other  pharmaceutical  manufacturers  for  products of similar
market  potential in that country in the  TERRITORY,  and (ii)  sufficient  with
respect to the potential for that country to fully exploit the market  potential
for the  PRODUCT  as  depicted  in the PLAN and as  determined  by the  STEERING
COMMITTEE.  Such PLAN shall be reviewed and mutually agreed to by the PARTIES on
an annual basis.

          2.12  NEWCO shall effect a national  commercial launch of a PRODUCT in
a country in the MAJOR  MARKETS  within  one  hundred  and eighty  (180) days of
MARKETING  AUTHORIZATION  thereof in such country in the MAJOR MARKETS. If NEWCO
does  not make a  national  commercial  launch  of such  PRODUCT  in one or more
countries  of the MAJOR  MARKETS  within the one  hundred  and eighty  (180) day
period,  the  licenses  granted to NEWCO  hereunder  shall with thirty (30) days
written notice from ELAN  terminate in the applicable  country and ELAN shall be
entitled to commercialize such PRODUCT in the FIELDS and to receive a license in
the FIELDS to the NEWCO INTELLECTUAL  PROPERTY,  SHEFFIELD 

                                       13
<PAGE>

INTELLECTUAL  PROPERTY and TRADEMARK in the applicable  country on the terms set
forth in Article 2.9.


          2.13  If NEWCO  indicates  to ELAN  that it does not  intend to obtain
MARKETING  AUTHORIZATION and commercialize the PRODUCTS in a particular  country
or countries of the  TERRITORY,  or fails to commence  commercialization  in any
country within one hundred and (180) days after receiving the required MARKETING
AUTHORIZATION  therefor,  ELAN shall be entitled to license from NEWCO the NEWCO
INTELLECTUAL   PROPERTY,   SHEFFIELD  INTELLECTUAL  PROPERTY  and  TRADEMARK  to
commercialize  the PRODUCTS in the FIELDS and to receive  licenses in the FIELDS
in such countries on the terms set forth in Article 2.9.


3.   ARTICLE III:  DEVELOPMENT OF THE PRODUCT
     ----------------------------------------


          3.1   NEWCO  shall be  responsible  for the  cost of the  development,
registration,  manufacture and marketing of the PRODUCTS, in accordance with the
PLAN and  subject to the  direction  of the  STEERING  COMMITTEE,  and NEWCO and
SHEFFIELD  shall  each use its  reasonable  best  efforts,  as  would be  deemed
commensurate  with the  achievement  by  SHEFFIELD  of the  business  aims for a
similar product of its own, to conduct the PROJECT. Subject to the provisions of
this Article 3, ELAN shall use its reasonable  best efforts,  as would be deemed
commensurate with the achievement of its own business aims for a similar product
of its own, to conduct  such part of the PROJECT as the Parties  mutually  agree
that shall be conducted by ELAN in accordance with the PLAN.

          3.2   Each  Party  hereby   confirms  that  it  shall   undertake  its
respective part of the PROJECT as a collaborative effort and that the provisions
of this Agreement  requires that each Party  diligently  carries out those tasks
assigned to it under the PROJECT and as  otherwise  agreed  during the course of
the  PROJECT.  Each  Party  shall  co-operate  with  the  other  in  good  faith
particularly with respect to unknown problems or contingencies and shall perform
its  obligations  in good faith and in a commercially  reasonable,  diligent and
workmanlike  manner.  Each Party will update the other Party on the  progress of
the PROJECT.

          3.3   For the avoidance of doubt,  the Parties  hereby  confirm that a
primary objective of the PROJECT is to procure  MARKETING  AUTHORIZATIONS in the
MAJOR  MARKETS for the PRODUCTS.  As of the  EFFECTIVE  DATE, it is the Parties'
expectation  that the body of data so generated in the PROJECT will also support
such  applications  for  regulatory  approval that NEWCO shall make in the other
countries of the TERRITORY.  In the event however that such  expectation  proves
incorrect  and further  data is required to obtain such other  approvals  as are
pursued by NEWCO in the other countries of the TERRITORY,  NEWCO shall determine
the  viability  of  proceeding  further  with  the  regulatory  application  and
generation of the further data  requirements.  In the event that NEWCO elects to
continue,  the Parties  shall agree on the program of work to be  undertaken  to
generate  such  additional  data  and the  apportioning  of  tasks  therefor  in
accordance with the other  provisions of Article 3. 

                                       14
<PAGE>

          3.4   NEWCO  shall mark or have  marked the  patent  number(s)  on all
PRODUCTS  or  otherwise  reasonably  communicate  to the  trade  concerning  the
existence  of any ELAN PATENT  RIGHTS,  SHEFFIELD  PATENT  RIGHTS,  NEWCO PATENT
RIGHTS or JOINT PATENT RIGHTS for the  countries  within the TERRITORY in such a
manner as to ensure  compliance with, and  enforceability  under, all applicable
laws, including,  without limitation,  35 United States Code Section 287, as the
same may be amended from time to time.

4.   ARTICLE IV:  FINANCIAL PROVISIONS
     ---------------------------------

          4.1   In  consideration of the rights and licenses granted to NEWCO to
the ELAN PATENT RIGHTS by virtue of this  Agreement,  NEWCO shall pay to ELAN or
ELAN'S designee the following:

                         4.1.1     [text omitted]

                         4.1.2     a single  payment  of [text  omitted]  within
                [text   omitted]   days  of   NEWCO'S   receipt   of   Marketing
                Authorization  in a country in the MAJOR  MARKETS  for the first
                PRODUCT.  NEWCO shall  immediately  notify ELAN in writing  upon
                NEWCO'S receipt of such MARKETING AUTHORIZATION.

                         4.1.3     a royalty  based on NSP generated by NEWCO or
                its sublicensees, as follows:

                                   (A)   [text  omitted]   percent  of  NSP  for
                                         PRODUCTS  due and  payable to ELAN that
                                         utilize, incorporate,  apply and/or are
                                         based on the  UPDAS  TECHNOLOGY  in the
                                         SYSTEMIC  PULMONARY  FIELD  and/or  the
                                         ENHANCING  TECHNOLOGY  in the  SYSTEMIC
                                         PULMONARY FIELD,

                                   (B)   [text omitted] percent of NSP  due  and
                                         payable  to  EIS  for   PRODUCTS   that
                                         utilize, incorporate,  apply and/or are
                                         based  solely  on the ADDS  TECHNOLOGY;
                                         and

                                   (C)   [text  omitted]   percent  of  NSP  for
                                         PRODUCTS  due and  payable to ELAN that
                                         utilize, incorporate,  apply and/or are
                                         based  on  any   combination  of  UPDAS
                                         TECHNOLOGY,    ENHANCING    TECHNOLOGY,
                                         and/or ADDS TECHNOLOGY.

                         4.1.4     If NEWCO  claims  in good  faith  that one or
                more of its  devices,  products,  parts or  components  thereof,
                compounds  and/or drug products  does not utilize,  incorporate,
                apply or is not  based on the ELAN  INTELLECTUAL  PROPERTY,  the
                SHEFFIELD   

                                       15
<PAGE>


                INTELLECTUAL PROPERTY and/or NEWCO INTELLECTUAL  PROPERTY,  then
                NEWCO shall immediately notify ELAN in writing. If ELAN disputes
                NEWCO's  claim,  the PARTIES  shall  discuss such matter in good
                faith and determine a mutually agreeable resolution.

          4.2   ROYALTIES, PAYMENTS, REPORTS AND RECORDS
                ----------------------------------------

                        4.2.1      Within  forty  five  (45)  days of the end of
                each  quarter,  NEWCO  shall  notify ELAN of the NSP of PRODUCTS
                sold in that preceding quarter.  Payments shown by each calendar
                quarter  report  to have  accrued  shall be due on the date such
                report  is due and  shall  be  payable  to the  designated  bank
                account  of ELAN or its  designee  as  instructed  by ELAN.  All
                payments due under this Agreement shall be made in United States
                Dollars and shall be non-refundable to NEWCO.

                        4.2.2      NEWCO   shall   keep  and  shall   cause  its
                AFFILIATES and sublicensees to keep true and accurate records of
                gross sales of the PRODUCT,  the items  deducted  from the gross
                amount in calculating the NSP, the NSP and the royalties payable
                to ELAN under this  Article  4.  NEWCO  shall  deliver to ELAN a
                written  statement thereof within forty-five (45) days following
                the end of each  calendar  quarter  (or any part  thereof in the
                first  or last  calendar  quarter  of this  Agreement)  for such
                calendar  quarter.  The said written  statements shall set forth
                for each PRODUCT on country-by-country basis, the calculation of
                the NSP from gross revenues  during that calendar  quarter,  the
                applicable  percentage  rate, a  computation  of the sums due to
                ELAN, and such details of the transactions  that are relevant to
                the  calculations  of  NSP  ("the   Statement").   The  Parties'
                financial  officers  shall agree upon the precise  format of the
                Statement.

                        4.2.3      Payments  due on NSP of the PRODUCT  based on
                sales  amounts in a currency  other than United  States  Dollars
                shall  first be  calculated  in the  foreign  currency  and then
                converted to United States  Dollars on the basis of the exchange
                rate in effect for the  purchase of United  States  Dollars with
                such  foreign  currency  quoted in the Wall  Street  Journal (or
                comparable publication if not quoted in the Wall Street Journal)
                with respect to the sale of currency of the country of origin of
                such  payment for the day prior to the date on which the payment
                by NEWCO is being made.

                        4.2.4      Any  income  or other  taxes  which  NEWCO is
                required  by law to pay or  withhold  on  behalf  of  ELAN  with
                respect to royalties and any other monies  payable to ELAN under
                this  Agreement  shall be  deducted  from the amount of such NSP
                payments,  royalties  and other monies due.  NEWCO shall furnish
                ELAN with proof of such  payments.  Any such tax  required to be
                paid or  withheld  shall be an  expense  of and borne  solely by
                ELAN.  NEWCO shall  promptly  provide ELAN with a certificate or
                other documentary evidence to enable ELAN to support a claim for
                a refund or a foreign tax credit with respect to any such tax so
                withheld  or  deducted by NEWCO.  The  Parties  will  reasonably
                cooperate in completing and filing documents  required under the
                provisions  of any  applicable  tax  treaty  or under  any other
                applicable  law, in order to enable NEWCO to make such  payments
                to ELAN without any deduction or withholding.

                                       16
<PAGE>


                        4.2.5      For  the  twenty   four  (24)  month   period
                following the close of each calendar year during the TERM, NEWCO
                and its sublicensees will provide ELAN's  independent  certified
                accountants (reasonably acceptable to NEWCO) with access, during
                regular  business  hours and upon  reasonable  prior request and
                subject to the  confidentiality  provisions as contained in this
                Agreement,  to the books and records  relating to the  PRODUCTS,
                solely for the purpose of verifying the accuracy and  reasonable
                composition of the calculations  hereunder for the calendar year
                then ended, including the sums payable by NEWCO to ELAN pursuant
                to Article 4.

                        4.2.6      Any  adjustment  required by such  inspection
                shall be made within  thirty (30) days of the  agreement  of the
                Parties  or,  if  not  agreed,  upon  the  determination  of  an
                arbitrator  to whom any  dispute  under  this  Article  shall be
                submitted to arbitration.  If the adjustment  payable to ELAN is
                greater than [text  omitted] of the amount paid for the relevant
                period,  then  the  cost to  ELAN  for  the  inspection,  and if
                applicable the arbitration, shall be paid by NEWCO provided that
                the costs of the  inspection  shall not  exceed  the  adjustment
                payable to ELAN.  In addition,  NEWCO shall pay interest to ELAN
                at the rate publicly  announced by Morgan Guaranty Trust Company
                of New York at its  principal  office as its prime rate plus one
                per cent (1%) (applicable as of the date on which payment should
                have been made  pursuant  to Article  4), from the date on which
                the  payment  should have been made  pursuant  to Article  4.2.1
                until the date of payment.

                        4.2.7      NEWCO shall pay  interest to ELAN at the rate
                publicly  announced by Morgan Guaranty Trust Company of New York
                at its  principal  office  as its  prime  rate plus one per cent
                (applicable  as of the date on which  payment  should  have been
                made pursuant to the  applicable  provisions of this  AGREEMENT)
                from the date on which payment should have been made pursuant to
                the  applicable  provision of this  AGREEMENT  until the date of
                payment.

5.   ARTICLE V:  REGISTRATION OF THE PRODUCT
     ---------------------------------------

          5.1   NEWCO shall at its sole cost file, and NEWCO and SHEFFIELD shall
use their  reasonable  best  efforts to prosecute  to  approval,  the  MARKETING
AUTHORIZATIONS for the PRODUCTS in the TERRITORY in accordance with the Plan and
subject to the direction of the STEERING COMMITTEE.

          5.2   NEWCO   shall   maintain   at  its  own   cost   the   MARKETING
AUTHORIZATIONS  during the period that NEWCO is marketing  the  PRODUCTS.  NEWCO
shall  continue to  maintain  the  MARKETING  AUTHORIZATIONS  in the  applicable
countries at ELAN'S request and expense, if ELAN acquires the right to a license
pursuant to Article 2.9 for such term  thereafter  during  which ELAN and/or its
designees is marketing the PRODUCTS, and NEWCO hereby agrees to provide to ELAN,
or at ELAN'S option to transfer and assign to ELAN, the MARKETING AUTHORIZATIONS
and any  applications  for  regulatory  approval  within thirty (30) days of the
submission thereof to the applicable authority.  NEWCO shall furnish to ELAN all
regulatory  filings  and other  material  correspondence  with the FDA and other
regulatory authorities within thirty (30) days of submission.

                                       17
<PAGE>

          5.3   During the registration procedure for MARKETING  AUTHORIZATIONS,
NEWCO  shall  keep ELAN  promptly  and fully  advised  of  NEWCO's  registration
activities,  progress and procedures. NEWCO shall notify ELAN immediately of any
inspection by the FDA or any other regulatory  authority of the manufacturing or
other  facilities  used  in the  clinical  research,  manufacturing,  packaging,
storage or  handling  of the  PRODUCTS.  Copies of all  correspondence  with the
regulatory authority will be provided to ELAN.

          5.4   NEWCO shall  indemnify  and hold harmless  ELAN,  its agents and
employees from and against all claims, damages, losses, liabilities and expenses
to which ELAN,  its  agents,  and  employees  may become  subject  related to or
arising out of NEWCO's and  SHEFFIELD'S  bad faith,  negligence  or  intentional
misconduct  in  connection  with the  filing  or  maintenance  of the  MARKETING
AUTHORIZATIONS.


6,   ARTICLE VI:  WARRANTY AND INDEMNITY.
     ------------------------------------


          6.1   ELAN represents and warrants to NEWCO and SHEFFIELD as follows:


                        6.1.1      ELAN  is duly  and  validly  existing  in the
                jurisdiction of its incorporation and each other jurisdiction in
                which the conduct of its business  requires  such  qualification
                (except  where  such  failure  to so  qualify  shall  not have a
                material adverse affect on the business and assets of ELAN), and
                is in compliance with all applicable laws, rules, regulations or
                orders relating to its business and assets;

                        6.1.2.     ELAN has full corporate  authority to execute
                and deliver this  AGREEMENT and to consummate  the  transactions
                contemplated  hereby;  this AGREEMENT has been duly executed and
                delivered   by  ELAN  and   constitutes   the  legal  and  valid
                obligations  of  ELAN  and  is   enforceable   against  ELAN  in
                accordance  with  its  terms  and the  execution,  delivery  and
                performance of this AGREEMENT and the transactions  contemplated
                hereby  and will not  violate  or result  in a default  under or
                creation of lien or  encumbrance  under  ELAN's  memorandum  and
                articles of association or any material  agreement or instrument
                binding upon or affecting  ELAN or its  properties  or assets or
                any applicable laws, rules, regulations or orders affecting ELAN
                or its properties or assets;

                        6.1.3.     ELAN  is  not  in  material  default  of  its
                memorandum and articles of association,  any applicable material
                laws  or  regulations  or any  material  contract  or  agreement
                binding upon or affecting it or its properties or assets and the
                execution,  delivery and  performance  of this AGREEMENT and the
                transactions  contemplated  hereby  will not  result in any such
                violation;

                        6.1.4.     As of the  EFFECTIVE  DATE,  ELAN is the sole
                and exclusive owner or licensee of, or controls all right, title
                and interest to the ELAN PATENT RIGHTS;  and to ELAN'S knowledge
                and belief without independent  investigation,  ELAN is the sole
                owner or  licensee of the ELAN  KNOW-HOW.  ELAN has the right to
                grant the licenses granted herein.  

                                       18
<PAGE>


                The ELAN PATENT RIGHTS,  and to ELAN'S knowledge and belief, the
                ELAN  KNOW-HOW,  are free and clear of any  lien,  encumbrances,
                security interest or restriction  granted by ELAN. ELAN will not
                grant during the TERM, any right,  license or interest in and to
                the  ELAN  INTELLECTUAL   PROPERTY,   or  any  portion  thereof,
                inconsistent with the license granted herein; and to the best of
                ELAN's  knowledge  there are no  pending or  threatened  adverse
                actions, suits, investigations, claims or proceedings brought by
                one or more  third  parties  related  to the  ELAN  INTELLECTUAL
                PROPERTY as of the EFFECTIVE DATE;

                        6.1.5      ELAN   represents   and  warrants   that  the
                execution  of this  AGREEMENT  will not  breach or in any way be
                inconsistent  with the  terms  and  conditions  of any  license,
                contract,  understanding or agreement, whether express, implied,
                written or oral between ELAN and any third party; and

                        6.1.6      EXCEPT AS SET FORTH IN THIS ARTICLE 6.1, ELAN
                IS GRANTING THE LICENSES  HEREUNDER ON AN "AS IS" BASIS  WITHOUT
                RECOURSE, REPRESENTATION OR WARRANTY WHETHER EXPRESS OR IMPLIED,
                INCLUDING   WARRANTIES  OF  MERCHANTABILITY  OR  FITNESS  FOR  A
                PARTICULAR  PURPOSE,  OR INFRINGEMENT OF THIRD PARTY RIGHTS, AND
                ALL SUCH WARRANTIES ARE EXPRESSLY DISCLAIMED.

          6.2   NEWCO  and  SHEFFIELD,  jointly  and  severally,  represent  and
warrant to ELAN the following:

                        6.2.1      Each of  NEWCO  and  SHEFFIELD  is  duly  and
                validly  existing in good  standing in the  jurisdiction  of its
                incorporation  and each other  jurisdiction in which the conduct
                of its business requires such  qualification  (except where such
                failure to so qualify shall not have a material  adverse  affect
                on the business and assets of NEWCO or SHEFFIELD, respectively),
                and  each of  NEWCO  and  SHEFFIELD  is in  compliance  with all
                applicable  laws,  rules,  regulations or orders relating to its
                business and assets;

                        6.2.2      Each  of  NEWCO   and   SHEFFIELD   has  full
                corporate authority to execute and deliver this AGREEMENT and to
                consummate the transactions  contemplated hereby; this AGREEMENT
                has been duly executed and delivered and  constitutes  the legal
                and valid  obligations of NEWCO and SHEFFIELD and is enforceable
                against NEWCO and SHEFFIELD in  accordance  with its terms;  and
                the  execution,  delivery and  performance of this AGREEMENT and
                the transactions  contemplated hereby will not violate or result
                in a default  under or  creation  of lien or  encumbrance  under
                NEWCO's and SHEFFIELD'S respective certificate of incorporation,
                by-laws or other organic  documents,  any material  agreement or
                instrument  binding upon or  affecting  NEWCO or  SHEFFIELD,  or
                their  respective  properties or assets or any applicable  laws,
                rules, regulations or orders affecting NEWCO, SHEFFIELD or their
                respective properties or assets;

                        6.2.3      Each of NEWCO and SHEFFIELD is not in default
                of its charter or by-laws, any applicable laws or regulations or
                any material  contract or agreement binding upon or 

                                       19

<PAGE>

                affecting  it or its  properties  or assets  and the  execution,
                delivery and performance of this AGREEMENT and the  transactions
                contemplated hereby will not result in any such violation; and

                        6.2.4      As of the EFFECTIVE  DATE,  each of NEWCO and
                SHEFFIELD  is the sole and  exclusive  owner or licensee  of, or
                controls all right, title and interest to the NEWCO INTELLECTUAL
                PROPERTY and the SHEFFIELD INTELLECTUAL PROPERTY,  respectively;
                and

                        6.2.5      Each of NEWCO and  SHEFFIELD  has not granted
                any option,  license, right or interest to any third party which
                would conflict with the terms of this AGREEMENT.

                        6.2.6      The    PRODUCTS     shall    be    developed,
                manufactured,  transported, stored, handled, packaged, marketed,
                promoted,  distributed,  offered for sale and sold in accordance
                with all  regulations  and  requirements  of the FDA and foreign
                regulatory  authorities  including,  without  limitation,  cGCP,
                cGLP, cGMP regulations. The PRODUCTS shall not be adulterated or
                misbranded as defined by the Federal Food, Drug and Cosmetic Act
                (or  applicable  foreign  law) and shall not be a product  which
                would   violate  any  section  of  such  Act  if  introduced  in
                interstate commerce.

                        6.2.7      NEWCO is fully  cognizant  of all  applicable
                statutes,  ordinances  and  regulations  of the United States of
                America  and  countries  in the  TERRITORY  with  respect to the
                manufacture of the PRODUCTS  including,  but not limited to, the
                U.S.  Federal  Food,  Drug  and  Cosmetic  Act  and  regulations
                thereunder  and  similar  statutes in  countries  outside of the
                United States, and cGMPs. NEWCO shall manufacture or procure the
                manufacture  of the PRODUCTS in  conformity  with the  MARKETING
                AUTHORIZATIONS  and in a manner  which fully  complies  with all
                United  States of  America  and  foreign  statutes,  ordinances,
                regulations and practices.

          6.3   ELAN shall indemnify,  defend and hold harmless NEWCO, SHEFFIELD
and their respective officers, directors, employees and agents from all actions,
losses,  claims,  demands,  damages, costs and liabilities (including reasonable
attorneys' fees) due to third party claims to which NEWCO or SHEFFIELD is or may
become  subject  insofar as they arise out of or are alleged or claimed to arise
out of (i) any breach by ELAN of any of its  obligations  under this  AGREEMENT,
(ii) any breach of a representation  or warranty of ELAN made in this AGREEMENT,
and (iii) any  activities  conducted  by ELAN in  connection  with the  PROJECT,
except to the extent due to the  negligence  or willful  misconduct  of NEWCO or
SHEFFIELD.

          6.4   NEWCO and  SHEFFIELD,  jointly and severally,  shall  indemnify,
defend and hold harmless ELAN and its officers, directors,  employees and agents
from all  actions,  losses,  claims,  demands,  damages,  costs and  liabilities
(including  reasonable  attorneys' fees) due to third party claims to which ELAN
is or may become subject  insofar as they arise out of or are alleged or claimed
to arise out of (i) any breach by NEWCO or SHEFFIELD  of any of its  obligations
under the AGREEMENT,  (ii) any breach of any representation or warranty of NEWCO
or SHEFFIELD made in this AGREEMENT,  (iii) any activities conducted by NEWCO


                                       20
<PAGE>
or SHEFFIELD  in  connection  with the PROJECT,  except to the extent due to the
negligence or willful  misconduct of ELAN,  and (iv) third party claims to which
ELAN is or may become  subject  insofar  as they arise out of or are  alleged or
claimed  to arise out of the  development,  manufacture,  transport,  packaging,
storage, handling, distribution, promotion, marketing, offer for sale or sale of
the PRODUCTS, including any product liability claim or any claim relating to any
recall of a PRODUCT.

          6.5   As a condition of  obtaining  an indemnity in the  circumstances
set out above or  elsewhere  in the  AGREEMENT,  the Party  seeking an indemnity
shall:

                        6.5.1      fully and promptly  notify the other Party of
                any claim or proceeding, or threatened claim or proceeding;

                        6.5.2      permit  the  indemnifying  Party to take full
                care and control of such claim or proceeding;

                        6.5.3      reasonably  assist in the  investigation  and
                defense of such claim or proceeding; and

                        6.5.4      not  compromise or otherwise  settle any such
                claim or  proceeding  without the prior  written  consent of the
                other Party,  which consent shall not be unreasonably  withheld;
                and take all reasonable  steps to mitigate any loss or liability
                in respect of any such claim or proceeding.

          6.6   Notwithstanding  anything  to the  contrary  in this  AGREEMENT,
ELAN,  SHEFFIELD  and NEWCO  shall not be liable to the other for any  punitive,
consequential  or  incidental  loss or  damage  (whether  for loss of  profit or
otherwise) by reason of any representation or warranty,  condition or other term
or any duty of  common  law,  or under  the  express  or  implied  terms of this
AGREEMENT,  and whether occasioned by the negligence of the respective  PARTIES,
their employees or agents or otherwise.

7.    ARTICLE VII:  PATENTS
      ---------------------

          7.1   TITLE:  Subject to the terms and  conditions of this  Agreement,
title to the various inventions and intellectual property are set forth below as
follows:

                        (i)     title to all inventions  and other  intellectual
property made solely by employees of ELAN in  connection  with the PROJECT shall
be owned by ELAN;

                        (ii)    title to all inventions  and other  intellectual
property made solely by NEWCO in  connection  with the PROJECT shall be owned by
NEWCO;

                        (iii)   title to all inventions  and other  intellectual
property made solely by SHEFFIELD in connection with the PROJECT, other than set
forth in  Article  7.1(v)  below,  shall be  owned by NEWCO  including,  without
limitation,  any such inventions or intellectual  property  relating to the ADDS
TECHNOLOGY;


                                       21
<PAGE>
                        (iv)    title to all inventions  and other  intellectual
property made jointly by ELAN and NEWCO in connection  with the PROJECT shall be
owned by NEWCO;

                        (v)     title to all inventions  and other  intellectual
property  made solely by SHEFFIELD  employees or jointly by NEWCO and  SHEFFIELD
employees relating to the MSI DELIVERY SYSTEM shall be owned by SHEFFIELD; and

                        (vi)    all  other  inventions  and  other  intellectual
property  made between  SHEFFIELD  and NEWCO  employees in  connection  with the
PROJECT  shall  be owned  by  NEWCO,  including,  without  limitation,  any such
inventions or intellectual property relating to the ADDS TECHNOLOGY.

          7.2   FILING AND PROSECUTION OF PATENTS
                ---------------------------------

                        7.2.1      Each Party shall  timely  inform the other in
                writing of any  improvement  or  development  made by such Party
                relating,  respectively,  to the ELAN INTELLECTUAL PROPERTY, the
                SHEFFIELD INTELLECTUAL  PROPERTY,  and/or the NEWCO INTELLECTUAL
                PROPERTY so that any patent protection that may be available for
                any such improvement or development is not compromised.

                        7.2.2      NEWCO shall  prepare,  prosecute and maintain
                all  patents  applications  and issued  patents  relating to the
                inventions,  improvements  and other  intellectual  property set
                forth in paragraphs (ii),  (iii),  (iv) and (vi) in Article 7.1.
                With respect to such  preparation,  prosecution  and maintenance
                activities, NEWCO shall timely apprise ELAN of the status of any
                such  activity and shall inform  SHEFFIELD of the status of such
                activity  if such  inventions  have  application  in the TOPICAL
                PULMONARY  FIELD.  In the event NEWCO  shall  decide not to seek
                patent protection for any such intellectual property, ELAN shall
                have the  option to take  control  of such  prosecution.  In the
                event that ELAN shall determine, in good faith, that any patents
                applications  and issued  patents  relating  to the  inventions,
                improvements  and  other  intellectual  property  set  forth  in
                paragraphs   (ii),   (iii),   (iv)  and  (vi)  in  Article   7.1
                predominantly  relates to an area other  than the  FIELDS,  ELAN
                shall  have  the  option  to take  control  of the  preparation,
                prosecution  and  maintenance of patent  protection  directed to
                such  intellectual  property.  In the  event  that ELAN does not
                exercise  such  right,  NEWCO  shall  have  the  option  to take
                responsibility for the preparation,  prosecution and maintenance
                of patent protection directed to such intellectual property.

                        7.2.3      SHEFFIELD   shall   prepare,   prosecute  and
                maintain all patents applications and issued patents relating to
                paragraph  (v) in section 7.1 with respect to such  preparation,
                prosecution and maintenance activities.

          7.3   ENFORCEMENT  OF  INTELLECTUAL   PROPERTY  RIGHTS;   THIRD  PARTY
                INFRINGEMENT
                ----------------------------------------------------------------

                        7.3.1      NEWCO  and ELAN  shall  promptly  inform  the
                other in writing of any alleged infringement or unauthorized use
                of  which  it  shall  become  aware  

                                       22

<PAGE>
                by  a  third  party  of  ELAN   INTELLECTUAL   PROPERTY,   NEWCO
                INTELLECTUAL  PROPERTY,  SHEFFIELD  INTELLECTUAL PROPERTY and/or
                JOINT  INTELLECTUAL  PROPERTY  and  provide  such other with any
                available evidence of such unauthorized activity.

                        7.3.2      During the TERM,  NEWCO  shall have the right
                to pursue at its own expense any  enforcement  activities of the
                ELAN INTELLECTUAL PROPERTY the NEWCO INTELLECTUAL  PROPERTY, the
                SHEFFIELD  INTELLECTUAL  PROPERTY and/or the JOINT  INTELLECTUAL
                PROPERTY  within the  FIELDS.  ELAN shall agree to be named as a
                necessary  party in an action  brought by and fully  financed by
                NEWCO  and will  reasonably  co-operate  with such  action.  Any
                expenses  borne  by ELAN  shall  be  reimbursed  by  NEWCO.  Any
                recovery   remaining   after  the  deduction  by  NEWCO  of  the
                reasonable  expenses  (including  attorney's  fees)  incurred in
                relation  to such  action  shall be  treated  as NSP for all the
                purposes of this  AGREEMENT.  Should NEWCO decide not to enforce
                the  ELAN  INTELLECTUAL  PROPERTY,  the  SHEFFIELD  INTELLECTUAL
                PROPERTY and/or the NEWCO INTELLECTUAL PROPERTY and/or the JOINT
                INTELLECTUAL  PROPERTY  within the FIELD,  ELAN may do so at its
                expense  and for its own  benefit,  and  NEWCO  will  reasonably
                co-operate  with such action.  Any actual out of pocket expenses
                borne  by  NEWCO  in  cooperating  with  such  action  shall  be
                reimbursed by ELAN.

                        7.3.3      Notwithstanding anything contained in Article
                7.3.2  to the  contrary,  in the  event  that a third  party  is
                believed  to  be  infringing  any  intellectual  property  right
                relating  to the MSI  DELIVERY  SYSTEM,  then at the  request of
                NEWCO,  SHEFFIELD  shall, at SHEFFIELD'S  discretion,  take such
                reasonable  and  necessary  actions  to remove  such  infringing
                activity or, in the alternative,  SHEFFIELD shall promptly grant
                to NEWCO the right to pursue any  enforcement  activities of the
                intellectual property relating to the MSI DELIVERY SYSTEM.

          7.4   INFRINGEMENT OF THIRD PARTY PATENTS
                -----------------------------------

                        7.4.1      In the event that a claim or proceedings  are
                brought  against  NEWCO  by a  third  party  alleging  that  the
                manufacture,  use,  offer  for  sale,  sale  or  other  activity
                relating to the PRODUCTS  constitute an  unauthorized  use of an
                intellectual  property  right owned by such a third party in the
                TERRITORY,  NEWCO shall  promptly  advise ELAN of such threat or
                suit.

                        7.4.2      NEWCO shall  indemnify,  defend and hold ELAN
                harmless against all actions, losses, claims, demands,  damages,
                costs and  liabilities  (including  reasonable  attorneys  fees)
                relating   directly  or   indirectly   to  all  such  claims  or
                proceedings  referred to in this Article 7.4; provided that ELAN
                shall not  acknowledge to the third party or to any other person
                the validity of any claims 

                                       23
<PAGE>

                of such a third party,  and shall not  compromise  or settle any
                claim or proceedings  relating thereto without the prior written
                consent of NEWCO, not to be unreasonably withheld or delayed. At
                its  option,  ELAN may  elect to take over the  conduct  of such
                proceedings  from NEWCO;  provided that NEWCO'S  indemnification
                obligations  shall  continue;  the costs of defending such claim
                shall be borne by ELAN;  and ELAN shall not compromise or settle
                any such claim or proceeding  without the prior written  consent
                of NEWCO, not to be unreasonably withheld or delayed.

                        7.4.3      ELAN  shall  have no  liability  to  NEWCO or
                SHEFFIELD   whatsoever  or  howsoever  arising  for  any  losses
                incurred  by NEWCO  as a  result  of  having  to  cease  selling
                PRODUCTS  or  having to defer the  launch of  selling  PRODUCTS,
                whether as a result of a court order or otherwise.

8A     ARTICLE VIII(A):  REGARDING THE SHEFFIELD INTELLECTUAL PROPERTY
       ---------------------------------------------------------------

          8A.1  CONFORMANCE WITH SIEMENS AGREEMENTS
                -----------------------------------

          The  PARTIES  acknowledge  that those  SHEFFIELD  rights in and to the
SHEFFIELD  INTELLECTUAL  PROPERTY  which are  derived  from the  SIEMENS  SUPPLY
AGREEMENT and the SIEMENS  LICENSE  AGREEMENT,  are subject to all the terms and
conditions  thereof.  It is the  PARTIES'  express  intent  that  the  grant  by
SHEFFIELD of any such rights be consistent with the terms and conditions thereof
and SHEFFIELD's obligations thereunder.

          8A.2  AFTER ACQUIRED KNOW HOW
                -----------------------

          If SHEFFIELD  acquires the rights to additional know how or patents in
the SYSTEMIC PULMONARY FIELD after the execution of this Agreement, it agrees to
negotiate  in good  faith  with  ELAN and  NEWCO a  license  or  sublicense,  as
appropriate,  of such  know how and  patents  to NEWCO  for use in the  Systemic
Pulmonary Field.

8.    ARTICLE VIII:  MISCELLANEOUS CLAUSES
      ------------------------------------

          8.1   SECRECY
                -------

                        8.1.1      Any  information,  whether  written  or  oral
                (provided  that oral  information  shall be  reduced  to writing
                within one month by the party  giving the oral  information  and
                the  written  form  shall  be  furnished  to  the  other  party)
                pertaining to the PRODUCT that has been or will be  communicated
                or  delivered  by ELAN to NEWCO  and/or  SHEFFIELD,  or by NEWCO
                and/or SHEFFIELD to ELAN, including,  without limitation,  trade
                secrets, business methods, and cost, supplier, manufacturing and
                customer information 

                                       24

<PAGE>
                (collectively,  "Confidential Information"), shall be treated by
                NEWCO,  SHEFFIELD  and  ELAN,   respectively,   as  confidential
                information, and shall not be disclosed or revealed to any third
                party  whatsoever  or used in any  manner  except  as  expressly
                provided for herein;  provided,  however, that such confidential
                information  shall  not  be  subject  to  the  restrictions  and
                prohibitions  set forth in this  Article to the extent that such
                CONFIDENTIAL INFORMATION:

                              (A)    is   available  to  the  public  in  public
                                     literature   or    otherwise,    or   after
                                     disclosure   by  one  Party  to  the  other
                                     becomes public knowledge through no default
                                     of the Party  receiving  such  CONFIDENTIAL
                                     INFORMATION; or

                              (B)    was  known  to  the  Party  receiving  such
                                     CONFIDENTIAL   INFORMATION   prior  to  the
                                     receipt of such CONFIDENTIAL INFORMATION by
                                     such  Party,  whether  received  before  or
                                     after the EFFECTIVE DATE; or

                              (C)    is  obtained  by the Party  receiving  such
                                     CONFIDENTIAL INFORMATION from a third party
                                     not   subject   to   a    requirement    of
                                     confidentiality   with   respect   to  such
                                     CONFIDENTIAL INFORMATION; or

                              (D)    is required to be  disclosed  pursuant  to:
                                     (A)   any   order   of   a   court   having
                                     jurisdiction   and  power  to  order   such
                                     information  to be released or made public;
                                     or (B) any lawful action of a  governmental
                                     or regulatory agency.

                        8.1.2      Each Party  shall  take all such  precautions
                with CONFIDENTIAL INFORMATION disclosed to it by the other Party
                as it normally  takes with its own  confidential  information to
                prevent any improper disclosure of the CONFIDENTIAL  INFORMATION
                disclosed to it by the other Party to any third party; PROVIDED,
                HOWEVER,  that such  CONFIDENTIAL  INFORMATION  may be disclosed
                within the limits required to obtain any authorization  from the
                FDA  or  any  other   United   States  of   America  or  foreign
                governmental  or  regulatory  agency or, with the prior  written
                consent  of the other  Party,  which  shall not be  unreasonably
                withheld, or as may otherwise be required in connection with the
                purposes of this Agreement.

                        8.1.3      Notwithstanding  the above, each Party hereto
                may use or disclose CONFIDENTIAL  INFORMATION disclosed to it by
                the  other  Party  to  the  extent  such  use or  disclosure  is
                reasonably   necessary   in   filing   or   prosecuting   patent
                applications,  prosecuting  or defending  litigation,  complying
                with applicable governmental regulations or otherwise submitting
                information to tax or other governmental authorities, conducting
                clinical trials, or making a 

                                       25
<PAGE>
                permitted   sub-license  or  otherwise   exercising  its  rights
                hereunder, provided that if a Party is required to make any such
                disclosure of the other party's CONFIDENTIAL INFORMATION,  other
                than  pursuant  to a  confidentiality  agreement,  it will given
                reasonable advance notice to the latter Party of such disclosure
                and,  except to the extent  inappropriate  in the case of patent
                applications,  will use its best efforts to secure  confidential
                treatment of such information  prior to its disclosure  (whether
                through protective orders or otherwise).

                         8.1.4     Each  Party  agrees  that  it will  not  use,
                directly or indirectly,  any CONFIDENTIAL  INFORMATION disclosed
                by the other  Party  pursuant to this  Agreement,  other than as
                expressly provided herein.

                         8.1.5     NEWCO  and  ELAN  will  not   publicize   the
                existence of this Agreement in any way without the prior written
                consent of the other subject to the disclosure  requirements  of
                applicable laws and regulations. The PARTIES agree that promptly
                following  the execution of this  Agreement  they shall issue an
                agreed press  release  which will not disclose the terms of this
                Agreement.  In the event that one of the PARTIES  wishes to make
                an announcement  concerning the Agreement,  that Party will seek
                the  consent  of the  other  PARTIES.  The  terms  of  any  such
                announcement shall be agreed in good faith.

          8.2  CONFLICT.  IN THE EVENT OF ANY INCONSISTENCY OR CONFLICT BETWEEN
THE  PROVISIONS  OF THIS  AGREEMENT ON THE ONE HAND,  AND THE  PROVISIONS OF THE
SHEFFIELD/NEWCO  LICENSE AGREEMENT OR THE  NEWCO/SHEFFIELD  LICENSE AGREEMENT ON
THE OTHER  HAND,  THE TERMS OF THIS  AGREEMENT  SHALL  GOVERN AND CONTROL IN ALL
RESPECTS.

          8.3  ASSIGNMENTS/   SUBCONTRACTING.   This  Agreement  shall  not  be
assignable  by ELAN,  SHEFFIELD  or NEWCO to any third  party  without the prior
written consent of the other Party hereto. Notwithstanding the above and subject
to the following sentence,  ELAN may assign this Agreement,  without the consent
of NEWCO or  SHEFFIELD,  to an  AFFILIATE  or to an entity that  acquires all or
substantially  all of the  business  or assets of ELAN to which  this  Agreement
pertains, whether by merger,  reorganization,  acquisition,  sale, or otherwise.
Notwithstanding  the foregoing,  NEWCO,  SHEFFIELD and ELAN will, subject to any
confidentiality  obligations to third parties,  discuss any assignment  prior to
its  implementation  in order to consider how to avoid or reduce any  additional
tax liability to either Party resulting solely from different tax law provisions
applying  after such  assignment.  For the purpose  hereof,  an  additional  tax
liability to either Party means that such Party would be subject to a higher net
tax on payments  made  hereunder  after taking into account any  applicable  tax
treaty and available tax credits,  than the said Party was subject to before the
proposed assignment.

          8.4   PARTIES BOUND.  This  Agreement  shall be binding upon and inure
for the benefit of PARTIES hereto, their successors and permitted assigns.

                                       26
<PAGE>

          8.5   SEVERABILITY.  If any  provision in this  Agreement is agreed by
the  PARTIES to be, or is deemed to be, or  becomes  invalid,  illegal,  void or
unenforceable  under any law that is applicable  hereto, (i) such provision will
be  deemed  amended  to  conform  to  applicable  laws  so as to  be  valid  and
enforceable  or, if it cannot be so  amended  without  materially  altering  the
intention of the PARTIES, it will be deleted,  with effect from the date of such
agreement or such earlier date as the PARTIES may agree,  and (ii) the validity,
legality and enforceability of the remaining  provisions of this Agreement shall
not be impaired or affected in any way.

          8.6   DURATION AND TERMINATION
                ------------------------

                        8.6.1      Subject  to the other  provisions  of Article
                8.6, this  Agreement  shall remain in full force and effect on a
                PRODUCT by PRODUCT  and country by country  basis,  for a period
                commencing as of the EFFECTIVE  DATE and expiring [text omitted]
                years from the date of the first commercial sale of such PRODUCT
                in such country in the TERRITORY,  or [text omitted],  whichever
                is longer (the "TERM").

                        8.6.2      In   addition  to  the  rights  of  early  or
                premature  termination provided for elsewhere in this Agreement,
                the term of this  Agreement may be terminated  immediately  upon
                written notice of termination given by:

                              (A)    the non-defaulting  party in the event that
                                     the  other  party   shall:   (1)  commit  a
                                     material   breach   or   default   under  a
                                     DEFINITIVE   DOCUMENT,   which   breach  or
                                     default shall not be remedied  within sixty
                                     (60) days  after  the  receipt  of  written
                                     notice  thereof  by the  party in breach or
                                     default;   or  (2)  have  made  a  material
                                     misrepresentation  of any representation or
                                     warranty contained herein or any DEFINITIVE
                                     DOCUMENT; or

                              (B)    ELAN,  in the  event  that (1) a change  of
                                     "control" of NEWCO or SHEFFIELD shall occur
                                     (the term "control"  shall have the meaning
                                     set    forth   in   the    definition    of
                                     "Affiliate"),   or   (2)  a   TECHNOLOGICAL
                                     COMPETITOR  acquires directly or indirectly
                                     voting stock or  equivalent  securities  in
                                     SHEFFIELD  or  NEWCO   representing   [text
                                     omitted] percent or more of the stock which
                                     carries entitlement to vote, or where [text
                                     omitted]  or  more  of  such  TECHNOLOGICAL
                                     COMPETITOR'S stock or equivalent securities
                                     is   acquired   by   SHEFFIELD   or  NEWCO;
                                     provided,  however,  that  in the  case  of
                                     [text   omitted]   (should  [text  omitted]
                                     become  a  Technological  Competitor),  the
                                     [text omitted] percent  threshold set forth
                                     in this  sentence  shall  be  deemed  to be
                                     [text  omitted]  percent,  or (3)  if  such
                                     TECHNOLOGICAL COMPETITOR otherwise controls
                                     SHEFFIELD'S or NEWCO'S  respective board of
                                     directors,  or  either  SHEFFIELD  or NEWCO
                                     otherwise   controls   such   TECHNOLOGICAL
                                     COMPETITOR's  board of directors or similar
                                     governing body.

                              (C)    ELAN on the one  hand,  and  SHEFFIELD  and
                                     NEWCO on the other hand, if ELAN, SHEFFIELD
                                     or NEWCO (on an individual  basis),  as the
                                     case   may  be,   shall   at  any  time  be
                                     Insolvent,      dissolved,      liquidated,
                                     discontinued,  or when  any  proceeding  is
                                     filed or  commenced  by either  Party under
                                     bankruptcy,  insolvency  or  debtor  relief
                                     laws.  For  

                                       27
<PAGE>

purposes  of this  Agreement,  "Insolvent"  shall  mean (1) the sum of a PARTY'S
debts exceeds its assets,  (2) a PARTY is unable, or has reason to believe it is
unable,  to pay its debts as such  debts  mature,  or (3) a PARTY  does not have
sufficient capital with which to conduct its business.

                         8.6.3     Upon exercise of those rights of  termination
                as set forth in this  Agreement  with  respect to any country or
                countries  or the  entire  Agreement  as the case  may be,  this
                Agreement  shall,   subject  to  the  other  provisions  of  the
                Agreement,  automatically  terminate forthwith in the applicable
                country or countries or the entire Agreement as the case may be,
                and be of no further legal force or effect.

                        8.6.4      Upon termination of this Agreement:

                              (A)    any sums that  were due from  NEWCO to ELAN
                                     prior  to  the  exercise  of the  right  to
                                     terminate this  Agreement  shall be paid in
                                     full within sixty (60) days of  termination
                                     of this Agreement;

                              (B)    all  confidentiality   provisions  set  out
                                     herein  shall  remain  in  full  force  and
                                     effect for a period of five (5) years;

                              (C)    all   representations,    warranties,   and
                                     indemnities  shall survive the  termination
                                     of this  agreement and shall remain in full
                                     force and effect;

                              (D)    the rights of  inspection  and audit  shall
                                     continue  in force for the period  referred
                                     to  in  the  relevant  provisions  of  this
                                     Agreement;

                              (E)    termination   of  this  Agreement  for  any
                                     reason  shall not release any Party  hereto
                                     from any  liability  which,  at the time of
                                     such  termination,  has already  accrued to
                                     the other Party or which is attributable to
                                     a  period  prior  to such  termination  nor
                                     preclude  either  Party from  pursuing  all
                                     rights and  remedies it may have  hereunder
                                     or at law or in equity with  respect to any
                                     breach of this Agreement;

                              (F)    except as is  necessary  to enable  ELAN to
                                     exercise  the  licenses  granted  by  NEWCO
                                     and/or   SHEFFIELD   to  ELAN   under  this
                                     Agreement,  upon  any  termination  of this
                                     Agreement,  NEWCO, SHEFFIELD and ELAN shall
                                     promptly  return  to the  other  Party  all
                                     CONFIDENTIAL  INFORMATION received from the
                                     other  Party  (except one copy of which may
                                     be retained for archival purposes);

                                       28
<PAGE>

                              (G)    in the event this  Agreement is  terminated
                                     for any reason,  NEWCO shall have the right
                                     for  a  period  of  six  (6)  months   from
                                     termination to sell or otherwise dispose of
                                     the  stock  of any  PRODUCT  then on  hand,
                                     which such sale shall be subject to Article
                                     4 and  Article 5 and the  other  applicable
                                     terms of this Agreement;

                              (H)    The ELAN  INTELLECTUAL  PROPERTY and all of
                                     the rights granted to NEWCO hereunder shall
                                     immediately revert to ELAN and, unless this
                                     Agreement is  terminated  due to the breach
                                     by ELAN beyond any cure or grace  period in
                                     accordance   with   the   terms   of   this
                                     Agreement,   NEWCO  and   SHEFFIELD   shall
                                     immediately  be deemed to have assigned and
                                     transferred    to   ELAN   the    MARKETING
                                     AUTHORIZATIONS     (together    with    all
                                     applications for regulatory approvals), the
                                     TRADEMARK,   the   SHEFFIELD   INTELLECTUAL
                                     PROPERTY,  the NEWCO INTELLECTUAL PROPERTY,
                                     the JOINT INTELLECTUAL PROPERTY, all rights
                                     under the purchase  agreement  for the ADDS
                                     TECHNOLOGY  (including  any  employment and
                                     other agreements contemplated  thereunder),
                                     all rights under supply or other agreements
                                     relating  to the  PRODUCTS,  and all  other
                                     transactions and documents  relating to the
                                     foregoing and/or contemplated thereby.

                              (I)    All  sublicenses  of the ELAN  INTELLECTUAL
                                     PROPERTY   shall    terminate,    provided,
                                     however,  that ELAN  agrees  to enter  into
                                     licenses with all  sublicensees of NEWCO on
                                     terms no less favorable to the sublicensees
                                     than  those  contained  in  the  sublicense
                                     agreements   with  NEWCO;   provided   such
                                     sublicense agreements have been approved by
                                     ELAN in accordance with this AGREEMENT.

                              (J)    The  following  Articles  shall survive the
                                     termination or expiration of this Agreement
                                     for any reason:  Article 1;  Articles  2.2,
                                     2.4, 2.9, 2.12, and 2.13;  Articles  4.2.5;
                                     4.2.6;  and 4.2.7;  Article 5.4; Article 6;
                                     Article 7, and Article 8.

          8.7   FORCE MAJEURE.  Neither Party to this Agreement  shall be liable
for delay in the performance of any of its  obligations  hereunder if such delay
results  from  causes  beyond  its  reasonable   control,   including,   without
limitation,  acts of God,  fires,  strikes,  acts of war, or  intervention  of a
Government Authority,  non availability of raw materials,  but any such delay or
failure shall be remedied by such Party as soon as practicable.

                                       29
<PAGE>


          8.8   RELATIONSHIP OF THE PARTIES. Nothing contained in this Agreement
is intended or is to be construed to  constitute  ELAN,  NEWCO and  SHEFFIELD as
partners or joint venturers or either Party as an employee of the other. Neither
Party hereto  shall have any express or implied  right or authority to assume or
create any obligations on behalf of or in the name of the other Party or to bind
the other Party to any contract, agreement or undertaking with any third party.


          8.9   AMENDMENTS. No amendment,  modification or addition hereto shall
be effective or binding on either Party unless set forth in writing and executed
by     a     duly     authorized     representative     of     both     PARTIES.


          8.10  WAIVER.  No waiver of any right  under this  Agreement  shall be
deemed  effective  unless  contained in a written  document  signed by the Party
charged  with such  waiver,  and no waiver of any  breach or  failure to perform
shall be deemed to be a waiver of any future  breach or failure to perform or of
any other right arising under this Agreement.


          8.11  NO EFFECT ON OTHER  AGREEMENTS.  No provision of this  Agreement
shall be construed so as to negate,  modify or affect in any way the  provisions
of any other agreement between the PARTIES unless specifically  referred to, and
solely to the extent provided, in any such other agreement.


          8.12  APPLICABLE  LAW. This Agreement is construed  under and ruled by
the laws of the State of New York. For the purpose of this Agreement the PARTIES
submit to the personal  jurisdiction of the United States District Court for the
State of New York. The PARTIES each further  irrevocably  consent to the service
of any complaint,  summons, notice or other process by delivery thereof to it by
any manner in which notices may be given pursuant to this Agreement.

          8.13  NOTICES.  Any notice to be given under this  Agreement  shall be
sent  in   writing   in   English   by   registered   airmail   or   faxed   to:

                     -  If to ELAN, at

                        Elan Corporation plc.
                        Lincoln House,
                        Lincoln Place,
                        Dublin 2, Ireland.

                        Attention:  President, Elan Pharmaceutical Technologies,
                                    a division of Elan Corporation plc
                        Telefax:    353 1 662 4960

                                       30

<PAGE>

                     -  If to NEWCO, at

                        Systemic Pulmonary Delivery, Ltd.
                        c/o Elan International Services, Ltd.
                        102 St. James Street
                        Flatts, Smith Parish FL04
                        Bermuda

                        Attention:  Chief Executive Officer

                     -  If to SHEFFIELD, at

                        Sheffield Pharmaceutical, Inc.
                        425 South Woodsmill Road
                        St. Louis, Missouri 63017

                        Attention: Chief Executive Officer
                        Telefax :  (314) 579-9799

                        with a copy to
                        Fitzpatrick, Cella, Harper & Scinto
                        30 Rockefeller Plaza
                        New York, NY 10112

                        Attention:  Michael P. Sandonato, Esq.
                        Telefax:  (212) 218-2200

                     or to such other  address(es) and telefax numbers as may
                     from time to time be  notified  by  either  Party to the
                     other hereunder.

           If a notice  is sent by  SHEFFIELD  to  NEWCO  OR NEWCO to  SHEFFIELD
pursuant to any agreements relating to the transactions  contemplated hereunder,
then SHEFFIELD or NEWCO, as the case may be, shall send a copy of such notice to
ELAN in accordance with the provisions of this Article.

           Any notice sent by registered  air-mail  shall be deemed to have been
delivered  within seven (7) working  days after  dispatch and any notice sent by
telefax  (with  confirmed  answer  back) shall be deemed to have been  delivered
within twenty four (24) hours of the time of the  dispatch.  Notice of change of
address shall be effective upon receipt.

          8.14  NO IMPLIED  RIGHTS.  No rights or licenses are granted or deemed
granted hereunder or in connection  herewith,  other than those rights expressly
granted in this Agreement.

                                       31

<PAGE>

          8.15  FURTHER  ASSURANCES.  At any  time or  from  time to time on and
after  EFFECTIVE  DATE, each party shall at the request of the other (i) deliver
such records,  data or other  documents  consistent  with the provisions of this
Agreement,  (ii)  execute,  and  deliver  or  cause  to be  delivered,  all such
consents,  documents or further  instruments  of transfer or license,  and (iii)
take or cause to be taken all such  actions,  as the other Party may  reasonably
deem  necessary or desirable in order for it to obtain the full benefits of this
Agreement and the transactions contemplated hereby.

          8.16  ENTIRE  AGREEMENT.  This  Agreement  including  its  Appendices,
together  with the  DEFINITIVE  DOCUMENTS,  sets forth the entire  agreement and
understanding  of the PARTIES with  respect to the subject  matter  hereof,  and
supersedes all prior  discussions,  agreements and writings in relating thereto,
including the letter of agreement of June 3, 1998.

                                       32

<PAGE>

          8.17  COUNTERPARTS.   This   Agreement   may   be   executed   in  two
counterparts, each of which shall be deemed an original and which together shall
constitute one instrument.


          IN WITNESS  THEREOF the Parties hereto have executed this Agreement in
duplicate.


                                 SYSTEMIC PULMONARY DELIVERY, LTD



                                 By: /s/ Thomas M. Fitzgerald
                                     --------------------------
                                 Name:  Thomas M. Fitzgerald
                                 Title: Chairman



                                 SHEFFIELD PHARMACEUTICAL, INC.


                                 By: /s/ Thomas M. Fitzgerald
                                     --------------------------
                                 Name:  Thomas M. Fitzgerald
                                 Title: Chairman



                                 ELAN CORPORATION, PLC


                                 By: /s/ Thomas Lynch
                                     --------------------------
                                 Name:  Thomas Lynch
                                 Title: Chief Financial Officer


                                       31
<PAGE>


                                   APPENDIX A

                               ELAN PATENT RIGHTS

                                NONE AT PRESENT

<PAGE>


                                   APPENDIX B

                                      PLAN

                                 [text omitted]

<PAGE>
                                   APPENDIX C

                             SHEFFIELD PATENT RIGHTS

                                 [text omitted]



For further information:

Sheffield Pharmaceuticals, Inc.                   John Muir Associates
425 South Woodsmill Road, Suite 270               5400 Kincheloe Drive
St. Louis, MO 63017                               Los Angeles, CA 90041
(314) 579-9899

Contact: Thomas Fitzgerald                        Contact:  John Muir
         (716) 385-0810                           (213) 257-4701


FOR IMMEDIATE RELEASE

            SHEFFIELD PHARMACEUTICALS AND ELAN COMPLETE FORMATION OF
                     PULMONARY DRUGS DELIVERY COLLABORATION

ST. LOUIS, JULY 1, 1998 - Sheffield  Pharmaceuticals,  Inc. (AMEX:SHM) announced
today that it has entered into a definitive agreement with Elan Corporation, plc
(NYSE:ELN) to create a wholly owned  subsidiary of Sheffield  responsible  for a
worldwide  collaboration to develop systematic therapies delivered by a range of
pulmonary drug delivery systems.

Terms of the agreement include a $17.5 million equity investment in Sheffield by
Elan  consisting of $6.0 million of common stock,  that will result in ownership
of approximately 17% of Sheffield's outstanding common shares, and $11.5 million
of 7% convertible  preferred stock. In addition to providing operating funds for
Sheffield,  a  substantial  portion of the funding  will be  contributed  to the
subsidiary to pay license fees to Elan for certain of the technologies  acquired
as well as  future  development  costs.  Elan,  which  will  be  represented  on
Sheffield's Board of Directors, will also provide funding for the acquisition of
additional,  value-adding,  pulmonary delivery technologies.  Products resulting
from the  collaboration  will be  available  for  marketing  by  either  Elan or
Sheffield.  Elan has the right to convert  the  preferred  stock into  either an
ownership interest in Sheffield or the new subsidiary.

The  first  technologies  to be  developed  by  the  collaborative  venture  are
Sheffield's   Metered   Solution  Inhaler  (MSI)  system  for  systemic  disease
applications  and Elan's  proprietary  UPDAS(TM)  delivery  system,  a unit-dose
pulmonary  delivery system.  Outside of the  collaboration,  Sheffield will hold
licenses to any rights relating to the respiratory  disease  applications of the
UPDAS(TM) technology and other new technologies the subsidiary may acquire.


<PAGE>
Thomas  Fitzgerald,  Chairman of Sheffield  said, "We are very excited about our
collaboration with Elan. This venture brings together a broad-based  platform of
pulmonary drug delivery  technologies - each with its own particular strengths -
which  can be  developed  into a wide  array of  specialized  applications.  For
example, we see significant  commercial  opportunity in applying these pulmonary
delivery platforms to the systemic delivery of large and small molecules." Added
Fitzgerald,  "Elan  is a world  leader  in drug  delivery  with a great  deal of
experience  in  collaborating  with a wide  range  of  companies.  Through  this
collaboration,  we can fully  maximize the potential of our MSI delivery  system
and add depth and breadth to our pulmonary delivery platform."

Seamus Mulligan,  President,  Elan  Pharmaceutical  Technologies,  a division of
Elan,  commented,  "We are pleased to expand our  portfolio of  technology-based
drug delivery collaborations.  The Sheffield team has demonstrated a high degree
of insight and expertise in the area of pulmonary  drug delivery as evidenced by
their novel MSI system. The combined  capabilities of Sheffield and Elan provide
an  excellent  platform to pursue the  development  of specific  pulmonary  drug
delivery technologies."

Sheffield Pharmaceuticals, Inc. is a specialty pharmaceutical company focused on
the development and  commercialization of later stage, lower risk pharmaceutical
opportunities,   particularly   those  utilizing   unique   pulmonary   delivery
technologies over a range of therapeutic areas.

This  press  release  contains  certain  forward-looking  statements  within the
meaning of Section 27A of the  Securities  Act of 1933, as amended,  and Section
21E of the Securities Exchange Act of 1934, as amended, which are intended to be
covered by the safe harbors  created  hereby.  Investors are cautioned  that all
forward-looking  statements  involve risks and  uncertainty,  including  without
limitation, the ability of the Company to successfully develop and commercialize
their   technologies.   Although  the  Company  believes  that  the  assumptions
underlying the forward-looking  statements contained herein are reasonable,  any
assumptions could be inaccurate,  and therefore,  there can be no assurance that
the forward- looking statements  included in this press release will prove to be
accurate.   In  light  of  the   significant   uncertainties   inherent  in  the
forward-looking  statements  included herein,  the inclusion of such information
should not be regarded as a  representation  by the Company or any other  person
that the objectives and plans of the Company will be achieved.

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