SHEFFIELD PHARMACEUTICALS INC
8-K, 1998-06-22
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 15, 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 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  15,  1998,  Sheffield  Pharmaceuticals,   Inc.  (the
"Company")  announced  that it had entered  into a  sublicense  and  development
agreement (the  "Agreement") with Inpharzam  International,  S.A. of Switzerland
("Inpharzam")   (an  affiliate  of  Zambon  Group,  SpA)  for  the  testing  and
development  of the  Company's  rights  in its  MSI  technology  in  respect  of
therapies  for  respiratory  diseases.  A copy of the press  release  disclosing
information  relating to the  Agreement and certain other matters is attached as
an exhibit to this report.

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


                  (c) EXHIBITS

                  1.       Press Release of the Company dated June 16, 1998.

                  2.       Form of Sublicense and Development  Agreement between
                           Sheffield   Pharmaceuticals,   Inc.   and   Inpharzam
                           International,  S.A.  (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).


                                       -2-

<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: June 22, 1998                     By:/S/ JUDY ROESKE BULLOCK
                                           -------------------------------------
                                              Judy Roeske Bullock
                                              Vice President and Chief Financial
                                              Officer



For further information:

SHEFFIELD PHARMACEUTICALS, INC.                   ZAMBON GROUP SPA
425 South Woodsmill Road, Suite 270               20091 Bresso
St. Louis, MO 63017                               Via Lillo del Duca, 10
(314) 579-9899                                    Milan, Italy

Contact:  Thomas Fitzgerald                       Contact:  Mario Galbiati
          (716) 385-0810                                    011-39-266-52-4269

JOHN MUIR ASSOCIATES
5400 Kincheloe Drive
Los Angeles, CA 90041

Contact:  John Muir
           (213) 257-4701


            SHEFFIELD AND ZAMBON ANNOUNCE STRATEGIC ALLIANCE FOR MSI
                                 DELIVERY SYSTEM

ST.   LOUIS,   MISSOURI   AND  MILAN,   ITALY,   JUNE  16,  1998  --   Sheffield
Pharmaceuticals,  Inc.  (AMEX:SHM)  and  Zambon  Group SpA  announced  today the
formation  of  a  strategic   alliance  for  the   worldwide   development   and
commercialization  of respiratory  drugs using Sheffield's  proprietary  Metered
Solution Inhaler (MSI) system.  Zambon is one of Europe's top five  prescription
respiratory companies.

Specific  terms of the agreement,  the potential  value of which is in excess of
$25  million  exclusive  of the  royalty  stream  or U.S.  co-promotion  rights,
include:

o         A $2.15  million  equity  investment  by an  affiliate  of  Zambon  in
         Sheffield,  which  includes  $650,000  previously  invested,  that will
         result in ownership of 13% of Sheffield's outstanding common shares. In
         addition,  upon the achievement of certain early technical  milestones,
         Zambon will provide Sheffield with $2 million of interest-free loans as
         advances against future milestone payments.

o         Zambon assumes all development costs, which Sheffield had estimated at
         approximately $20 million, for respiratory disease therapies in the MSI
         system,  including the four drugs that are  Sheffield's  current focus:
         albuterol,  ipratropium,  cromolyn and beclomethasone, as well as other
         respiratory compounds that may be suitable for use with the MSI.

o         Zambon may designate a member of Sheffield's Board of Directors.

o         Sheffield receives milestone payments upon NDA approval of each of its
          current  four drugs and for the first  European  product  licenses for
          each of the four  drugs.
                                     -more-
o         Sheffield  receives a royalty from Zambon,  ranging from 5%-7%, on all
          Zambon sales of the MSI system.
<PAGE>
o         Sheffield receives  co-promotion  rights in the United states and will
          be compensated in the form of a profit sharing arrangement.

o         Sheffield retains the rights to non-respiratory disease application of
          the MSI.

Commenting on the alliance,  Thomas Fitzgerald,  Sheffield's  Chairman said, "We
are pleased to  establish  this  alliance  with Zambon for  respiratory  disease
applications  of  our  MSI  delivery  system  on a  global  basis.  Zambon  is a
well-respected  pharmaceutical  company with extensive respiratory expertise and
the  resources  to  develop  and  commercialize  products  using our  unique MSI
technology.  We are  especially  pleased  to partner  with a company  that has a
significant  presence in Europe and  ambitions to be a major  competitor  in the
U.S. market." Added  Fitzgerald,  "This alliance allows us to focus on expanding
the  scope  and  depth of our  pulmonary  delivery  technology  portfolio  while
ensuring that our core MSI respiratory  products  progress to market in a timely
fashion."

"The MSI system is an important component in the achievement of Zambon's overall
strategic business  objectives.  The MSI system offers tangible patient benefits
and represents an exciting opportunity for Zambon to develop a broad respiratory
product  range on a global  basis.  This  alliance is an  important  step in the
continued growth and development of Zambon's  worldwide  respiratory  business,"
said Andrea Zambon, President and CEO, Zambon Group.

Zambon  Group  SpA,  headquartered  in Milan,  Italy,  is a  research-intensive,
multinational   pharmaceutical   firm.  The  group   researches,   develops  and
manufactures healthcare products and fine chemicals,  which it markets worldwide
either directly or through license.

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
its  technologies.   Although  the  Companies   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 Companies will be achieved.

                                      ###

                      SUBLICENSE AND DEVELOPMENT AGREEMENT



                                     BETWEEN



                         SHEFFIELD PHARMACEUTICALS, INC.



                                       AND



                          INPHARZAM INTERNATIONAL, S.A.


<PAGE>
                                TABLE OF CONTENTS
                                                                            PAGE
1.       Definitions..........................................................3
2.       Conformance with Siemens Agreements..................................7
3.       Development Program..................................................8
4.       Exclusive Sublicenses...............................................11
5.       Representation, Warranties and Additional Covenants.................19
6.       Business Decisions and Commercial Efforts...........................25
7.       Data................................................................27
8.       Indemnification and Infringement....................................28
9.       Termination.........................................................32
10.      Events of Force Majeure.............................................35
11.      Specific Performance................................................36
12.      Further Assurances..................................................37
13.      Assignment..........................................................38
14.      Choice of Law.......................................................39
15.      Contractual Relationship............................................40
16.      Notices.............................................................41
17.      Miscellaneous.......................................................42

                                       -i-

<PAGE>



Appendix A                 -        Patents & Patent Applications
Appendix B                 -        Subscription Agreement
Appendix C                 -        Resolution of Sheffield Board of Directors
Appendix D                 -        Development Plan
Appendix E                 -        Promissory Note
Appendix F                 -        Report re: Albuterol
Appendix G                 -        Report re: Beclomethasone
Appendix H                 -        Co-promotion Principles

                                      -ii-

<PAGE>
                      SUBLICENSE AND DEVELOPMENT AGREEMENT

         AGREEMENT (this  "Agreement"),  made June 15, 1998,  between  Inpharzam
International,  S.A., a corporation  organized under the laws of Switzerland and
having its  principal  executive  offices at Via  Industria  1, 6814  Cadempino,
Switzerland, and its Affiliates (as hereinafter defined)(hereinafter referred to
as "Inpharzam"),  and Sheffield  Pharmaceuticals,  Inc., a corporation organized
under the laws of the State of  Delaware  and  having  offices  at 37 South Main
Street, Pittsford, New York 14534 (hereinafter referred to as "Sheffield").

         WHEREAS,  Sheffield  holds  i)  the  exclusive  worldwide  right  to be
supplied  with  Devices  (as  hereinafter  defined)  pursuant  to the  terms  of
Sheffield's Basic Supply Agreement with Siemens  Aktiengesellschaft  Keramik und
Porzellanwerk (hereinafter "Siemens") dated March 21, 1997 and ii) the exclusive
worldwide  rights in and to the  Sublicensed  Patent Rights and  Technology  (as
hereinafter defined) pursuant to the terms of Sheffield's License Agreement with
Siemens dated March 21, 1997 and by virtue of its own development work; and

         WHEREAS,  Sheffield disclosed to Inpharzam's  Affiliate (as hereinafter
defined) Zambon Group,  S.p.A.  (hereinafter  "Zambon") under a  Confidentiality
Agreement dated [TEXT OMITTED]  (hereinafter the  "Confidentiality  Agreement"),
information   relating  to  a  Delivery  System  and  certain  Formulations  (as
hereinafter defined); and

         WHEREAS,  Inpharzam  wishes to be supplied with Devices and sublicensed
under the Sublicensed Patent Rights and Technology


<PAGE>
exclusively  in the  Field  in  the  Territory  (as  hereinafter  defined),  and
Inpharzam and Sheffield  desire to complete  testing and development of Licensed
Products (as hereinafter defined); and

         WHEREAS,  Sheffield  granted to Inpharzam an option for such supply and
sublicense  under an Option  Agreement  dated  April 14,  1998 and both  parties
desire to perform  certain  studies on various  Formulations  of medicines to be
used  in the  Delivery  System  and  to  seek  regulatory  approval  to  market,
distribute and sell Licensed Products in the Field in the Territory.

         NOW,  THEREFORE,  in consideration of the promises and mutual covenants
hereinafter set forth, the parties hereby agree as follows:

                                       -2-

<PAGE>
1.       Definitions

         1.1 "AFFILIATE" means any entity which directly or indirectly controls,
is  controlled  by or is under common  control  with a party to this  Agreement.
"Control"  for the purposes of this  definition  means the ownership of at least
fifty percent  (50%) of the  outstanding  voting stock of a corporate  entity or
voting interest in a non-corporate equity.

         1.2 "BASIC LICENSE  AGREEMENT" means the License  Agreement dated March
21, 1997 between Sheffield and Siemens.

         1.3 "BASIC SUPPLY  AGREEMENT"  means the Basic Supply  Agreement  dated
March 21, 1997 between Sheffield and Siemens.

         1.4 "DELIVERY  SYSTEM" means the  multi-dose  nebulizer  comprising the
Device and Dosator that conforms to the Specification, as may be modified and/or
improved from time to time.

         1.5 "DEVELOPMENT PLAN" shall mean the plan setting forth the timing and
events relating to the development and registration in the Territory of four (4)
mutually   acceptable   Licensed  Products  (which  at  this  time  include  the
Formulation  for albuterol,  ipratropium,  cromolyn and  beclomethasone,  or any
other  Formulation  mutually  agreed to by the parties),  as attached  hereto as
Appendix D.

         1.6  "DEVICE"  means  that  portion  of  the  Delivery   System  to  be
manufactured and supplied by Siemens pursuant to the Basic Supply Agreement,  as
described in the Specification.

         1.7  "DOSATOR"   means  a  dosating  system  capable  of  dispensing  a
Formulation, as described in the Specification.

                                       -3-

<PAGE>
         1.8  "EFFECTIVE  DATE" means the date upon which both parties sign this
Agreement.

         1.9 "FDA" means the United States Food and Drug  Administration and any
successor bodies.

         1.10 "FIELD" means the use of various  medicines for humans in treating
respiratory  disease  and/or other lung disease  including,  but not limited to,
anti-infectives.

         1.11 "FIRST  COMMERCIAL  SALE" means the first sale by  Inpharzam,  its
Affiliates or sublicensees of a Licensed Product to an independent third party.

         1.12 "FISCAL QUARTER" means a quarter of a Fiscal Year.

         1.13 "FISCAL  YEAR" means the year  commencing  on the January 1 of the
year during which the First Commercial Sale occurs.

         1.14 "FORMULATION"  means a preparation of a pharmaceutical  capable of
administration to a human by the Delivery System.

         1.15  "LICENSED   PRODUCT"   means  any   combination  of  Dosator  and
Formulation  in the Field which employs the Technology or which would infringe a
Valid Claim of any Sublicensed  Patent Rights, but for the sublicense granted in
this Agreement.

         1.16  "NDA"  means  a new  drug  application  submitted  to the FDA for
approval to manufacture,  promote, market, distribute and sell Licensed Products
as medicine for humans in the Territory.

         1.17 "NET SALES" means the total revenues  received by Inpharzam or its
Affiliates from the sale of Licensed  Products to independent third parties less
the  following  amounts (i) customary  discounts,  including  cash  discounts or
rebates  actually  allowed or  granted,  (ii)  customary  credits or  allowances
actually granted upon claims or returns,  regardless of the party requesting the
return,

                                       -4-

<PAGE>
(iii)  separately  itemized  freight charges paid by Inpharzam or its Affiliates
for delivery,  to the extent included in revenue  received.  Net Sales shall not
include  the value of any  promotional  samples,  including  any  affixed  to or
accompanying other products of Inpharzam.

         1.18  "NON-US   REGULATORY   AUTHORITY"  means  any  health  agency  or
regulatory  authority in and  throughout  the  Territory,  outside of the United
States, authorized to grant marketing approval for the Licensed Products.

         1.19 "SIEMENS AGREEMENTS" is a collective reference to the Basic Supply
Agreement and the Basic License Agreement.

         1.20 "SPECIFICATION" means the complete and detailed description of the
Delivery System as set forth in Annex 2 to the Basic Supply Agreement.

         1.21  "SUBLICENSED  PATENT  RIGHTS"  mean  i) the  patents  and  patent
applications set forth in Appendix A; and ii) any and all extensions,  renewals,
continuations, continuations-in-part,  divisions, patents-of-addition, reissues,
reexaminations, supplementary protection certificates or foreign counterparts of
any of the  foregoing;  and iii) any and all patents which are granted on any i)
and ii); and iv) any and all patents and patent applications owned or controlled
or licensed by Sheffield with the right to sublicense which contain claims,  the
practice of which would  infringe  the claims of a patent or patent  application
included  in i),  ii),  or iii),  or which are based  upon or  derived  from the
Technology.

         1.22   "TECHNOLOGY"   means  any  and  all  inventions,   improvements,
discoveries, claims, formulae, processes, data, trade secrets,

                                       -5-

<PAGE>
technologies, and know-how owned or controlled or licensed by Sheffield with the
right to sublicense and i) incorporated in or useful for the manufacture, use or
sale of the Delivery  System and/or  Formulations in the Field or ii) claimed or
disclosed in any patent or patent  application  included in  Sublicensed  Patent
Rights.

         1.23 "TERRITORY" means worldwide.

         1.24 "VALID CLAIM" means a claim in any issued, unexpired patent within
the Sublicensed  Patent Rights which has not been held invalid or  unenforceable
by a nonappealed or unappealable  decision by a court or other  appropriate body
of  competent  jurisdiction,  and which is not  admitted  to be invalid  through
disclaimer, dedication to the public or otherwise.

                                       -6-

<PAGE>
2.       Conformance with Siemens Agreements

                  Sheffield's rights to be supplied with Devices,  or in certain
circumstances  to  manufacture  Devices,  and  Sheffield's  rights in and to the
Sublicensed Patent Rights are derived from the Siemens  Agreements;  Sheffield's
rights in and to the Technology are derived in part from the Siemens  Agreements
and in part from Sheffield's own development work. Any rights of Sheffield which
are  derived  from the  Siemens  Agreements  are subject to all of the terms and
conditions  thereof.  It is the  parties'  express  intent  that  the  grant  to
Inpharzam  by Sheffield of any rights  derived  from the Siemens  Agreements  be
consistent  with  the  terms  and  conditions   thereof  and  with   Sheffield's
obligations thereunder.

                                       -7-

<PAGE>
3.       Development Program

         3.1  Inpharzam  agrees to carry out at its expense the  development  of
Licensed  Products  set forth in the  Development  Plan  attached  as Appendix D
hereto.  Sheffield  agrees that it shall assist  Inpharzam  in this  development
effort at no substantial cost to Sheffield, disclose to Inpharzam all Technology
required by Inpharzam to evaluate  Licensed  Products and the  marketability and
regulatory  status of various inhaled medicines for use with the Delivery System
in the Field,  and provide  Inpharzam  with  updates of all  newly-developed  or
newly-acquired Technology.

         3.2 (a) Inpharzam  shall  periodically  provide to Sheffield  copies of
reports on all development work and testing performed. The reports shall include
but not be  limited  to reports on  clinical  development,  regulatory  matters,
manufacturing  status  and  intellectual  property.   Sheffield  shall  promptly
evaluate  such reports and provide  comments to Zambon based on the  Technology,
and on  newly-developed  or newly-acquired  Technology.  Representatives  of the
parties shall meet at mutually convenient times to discuss planning and progress
of the Development Plan.

             (b) All activities of each party shall be carried out by each party
in  strict  compliance  with all  applicable  federal,  state,  or  local  laws,
regulations  or  guidelines  governing  such  activities.  Without  limiting the
generality of the foregoing,  neither party shall knowingly  infringe any United
States or foreign  patent or  copyright  owned by any third party in  connection
with the performance of its obligations under this Agreement.

                                       -8-

<PAGE>
         3.3      Inventions

                  (a) All intellectual  property rights such as patents,  patent
applications, inventions, data, know-how and the like (hereinafter "Intellectual
Property"),  owned or controlled  by either party prior to the parties  entering
into this Agreement or the Option  Agreement,  shall remain the property of such
party, subject only to the rights granted herein and to Sheffield's  obligations
under the Siemens Agreements.

                  (b) All Intellectual  Property  conceived and/or first reduced
to practice during the term of this Agreement or the Option  Agreement solely by
personnel  employed by or on behalf of either party shall remain the property of
such  party,  subject  only to the  rights  granted  herein  and to  Sheffield's
obligations under the Siemens Agreements.

                  (c) All Intellectual  Property  conceived and/or first reduced
to practice during the term of this Agreement or the Option Agreement jointly by
personnel  employed  by or on behalf  of both  parties  shall be owned  jointly,
subject only to the rights granted herein and to Sheffield's  obligations  under
the Siemens Agreements. Should the parties agree to file patent applications for
the same, they shall do so,  employing an attorney or agent mutually agreed upon
to act in their joint behalf and shall share the costs related thereto  equally.
In the event that only one party seeks patent protection,  then that party shall
bear all costs and the other party shall  cooperate fully in the prosecution and
enforcement of any patent application or patent resulting therefrom.

         3.4  Inpharzam has  previously  paid to Sheffield the option sum of Six
Hundred Fifty Thousand Dollars ($650,000.00), the receipt of

                                       -9-

<PAGE>
which is hereby acknowledged, as an investment in the common stock of Sheffield.
Sheffield has delivered to Inpharzam a  Certificate  for such common stock,  the
receipt of which is also hereby acknowledged.

         3.5 Promptly  after the  Effective  Date of this  Agreement,  Sheffield
shall  disclose to  Inpharzam  all of the  Technology  required by  Inpharzam to
practice the  Sublicensed  Patent  Rights and  Technology  licensed to Inpharzam
hereunder, and shall certify that all such information has been provided.

         3.6  Sheffield  and  Inpharzam  agree to form a Committee,  which shall
monitor the progress of the development program and the submissions of the NDA's
for the Licensed Products, as set forth in the Development Plan.

                                      -10-

<PAGE>
4.       Exclusive Sublicenses

         4.1 Sheffield hereby grants to Inpharzam an exclusive sublicense in the
Field under the Sublicensed Patent Rights and the Technology, with the rights to
grant  further  sublicenses,  to make,  have  made,  use and have sold  Licensed
Products  in the  Territory,  subject  to the  Co-Promotion  Rights set forth in
Section 4.10.  Notwithstanding  anything in this Agreement to the contrary,  the
parties hereby  expressly agree that the sublicense  granted to Inpharzam herein
does not extend to chemical  entities  developed or acquired by Sheffield  after
the execution of this  Agreement.  However,  Sheffield  agrees that in the event
that such  compounds  are  developed or acquired (a) it shall  negotiate in good
faith for the  licensing  of such  chemical  entities  for use with the Delivery
System in the Field to  Inpharzam;  and (b) it shall not license  such  chemical
entities for use with the Delivery System in the Field to any third-party.

         4.2 As  consideration  for the rights  granted  herein by  Sheffield to
Inpharzam, Inpharzam hereby agrees to make the following payments to Sheffield:

                  (a) Upon execution of this Agreement,  Inpharzam shall make an
additional  investment  in the common  stock of Sheffield in the amount of [TEXT
OMITTED],  in return for which Sheffield shall issue to Inpharzam in Inpharzam's
name [TEXT OMITTED]  shares of the common stock of Sheffield,  all in accordance
with  the  terms  of  a  Subscription  Agreement  For  Shares  Of  Common  Stock
("Subscription  Agreement") executed simultaneously herewith and attached hereto
as Appendix B.

                                      -11-

<PAGE>
                  (b) Said Subscription Agreement shall include a stock purchase
option on the part of Inpharzam granting Inpharzam,  in the event of a public or
private  sale of  additional  shares of common  stock of  Sheffield at a certain
offering  price,  an option to  purchase  within  ninety  (90) days of that sale
enough additional shares of common stock of Sheffield at that offering price, so
that Inpharzam's  percentage ownership of common stock of Sheffield  immediately
prior to such public or private sale may be maintained.

                  (c) In  addition,  Inpharzam  shall be entitled as of the date
hereof to designate  one member of the Board of Directors  of  Sheffield,  which
member  shall be  reasonably  acceptable  to  Sheffield,  and which  board shall
consist of a maximum of seven  members  and which  board  shall not be  expanded
during the period in which  Inpharzam has the right to designate a member of the
board of Sheffield, in accordance with a resolution of the Board of Directors of
Sheffield  dated July 15,  1998,  a copy of which  shall be  attached  hereto as
Appendix C. Inpharzam shall have the right to maintain its designee on the board
only for so long as Inpharzam or its Affiliates hold [TEXT OMITTED].

                  (d) Upon  execution  of this  Agreement  Inpharzam  agrees  to
extend to Sheffield an interest  free line of credit loan in the amount of [TEXT
OMITTED].  Such line of credit loan may be drawn down and  received by Sheffield
in two  payments as follows,  with each  payment  being  secured by a promise by
Sheffield in the form of the  Promissory  Note  attached as Appendix E hereto to
repay the amount drawn down by October 1, 2002, in accordance  with the schedule
set forth therein, or earlier as hereinafter provided:

                                      -12-

<PAGE>
                    1. [TEXT  OMITTED]  upon proof of  principle  of delivery of
albuterol  and the  issuance  of a report  of the type set forth in  Appendix  F
attached hereto.

                    2.  [TEXT   OMITTED]  upon  the   conclusion  of  successful
beclomethasone  formulation studies demonstrating  technical feasibility and the
issuance of a study report of the type set forth in Appendix G attached hereto.

         (e) The parties  agree that in the event that  marketing  approvals for
Licensed Products are not obtained prior to [TEXT OMITTED], they will discuss in
good faith whether and to what extent the  repayment  schedule set forth in this
Agreement and its Appendix E should be modified.

         (f)  Inpharzam  shall make up to [TEXT  OMITTED]  additional  milestone
payments  to  Sheffield,  each in the  amount  of [TEXT  OMITTED],  on the first
business day following  receipt by Inpharzam of a written  approval  letter from
the FDA with respect to the first [TEXT OMITTED]  mutually  acceptable  Licensed
Products  in the  U.S.  and on the  first  business  day  following  receipt  by
Inpharzam of a written approval letter from a Non-US Regulatory Authority in any
of the major countries in Europe, specifically Italy, France, Germany, Spain and
the U.K., with respect to the first [TEXT OMITTED] mutually  acceptable Licensed
Products to be incorporated into the Development  Plan. The mutually  acceptable
Licensed Products include at this time the Formulation for the following:

                                    1.  albuterol

                                    2.  ipratropium

                                    3.  cromolyn

                                    4.  beclomethasone,

                                      -13-

<PAGE>
or any other  medicines  mutually  agreed to by both  parties.  It is  expressly
understood  that  the  receipt  of a  written  approval  letter  from  a  Non-US
Regulatory  Authority in a major European  country of any Licensed  Product that
has already  been  approved  in a different  major  European  country  shall not
trigger an additional milestone payment.  Moreover, under no circumstances shall
Inpharzam be required to make  payments to Sheffield  under this  subsection  in
excess of [TEXT OMITTED].

         (g) At the  time of  receipt  of each of the  milestones  set  forth in
subsection  4.2(f),  Sheffield  shall,  if  applicable,  make a payment of [TEXT
OMITTED] to Inpharzam to pay down the balance of any outstanding loans set forth
under subsection  4.2(d). The payments set forth in this subsection 4.2(g) shall
be applied  equally to the balances of any of the loans set forth in subsections
4.2(d)(1) and 4.2(d)(2) of this Agreement that were drawn down by Sheffield,  to
reduce or eliminate (as may be applicable) the earliest of any payments that may
be due. Under no  circumstances  shall Sheffield be required to pay to Inpharzam
more than the outstanding loan amount.

         (h) It is hereby  expressly  acknowledged  that  Sheffield  has paid to
Siemens  the 1998 annual  license fee of DM  2,000,000.00,  in  accordance  with
Section 3.2 of the Option Agreement between Sheffield and Zambon. At the time of
execution  of this  Agreement  and,  thereafter,  at the time  each of the above
milestone  payments  shall be due and payable to  Sheffield,  and as a condition
precedent to payment by Inpharzam,  Sheffield shall submit to Inpharzam a letter
from Siemens confirming that the Siemens Agreements are in

                                      -14-

<PAGE>
full force and effect and that there are no material defaults thereunder.

         (i) Sheffield agrees to use reasonable  commercial efforts to cooperate
with Inpharzam in any and all efforts  involving  contacts with and negotiations
with third party suppliers of raw materials,  component  parts,  formulators and
manufacturers of Dosators or other items related to Licensed Products  including
but not limited to [TEXT OMITTED] Sheffield further agrees that it shall use its
best efforts to cause  Siemens to extend the Basic  License  Agreement and Basic
Supply Agreement beyond their initial terms, in accordance with Sections 9.1 and
13.1, respectively, thereof.

         4.3      Royalties

                  (a) Royalties shall be paid to Sheffield within 45 days of the
end of each Fiscal Quarter as follows:

                           (1)      [TEXT OMITTED] of Net Sales made that Fiscal
Quarter of Licensed Products for all sales less than [TEXT OMITTED]
in any Fiscal Year;

                           (2)      [TEXT OMITTED] of Net Sales made that Fiscal
Quarter of Licensed  Products for all sales in excess of [TEXT OMITTED] but less
than [TEXT OMITTED] in any Fiscal Year;

                           (3) [TEXT  OMITTED] of all Net Sales made that Fiscal
Quarter of Licensed  Products  for all sales in excess of [TEXT  OMITTED] in any
Fiscal Year;

                           (4)  [TEXT  OMITTED]  of  all  payments  received  by
Inpharzam or its Affiliates from sublicensees for the sale of Licensed Products;
and

                                      -15-

<PAGE>
                           (5) During a time in which there are no Valid  Claims
under the Sublicensed  Patent Rights, the royalty rates set forth above shall be
[TEXT OMITTED].

         (b) Royalties shall be earned and paid by Inpharzam to Sheffield, until
the last Valid Claim under the Sublicensed  Patent Rights expires.  No royalties
shall be payable on sales  transactions  between  Inpharzam and any Affiliate or
sublicensee.  Only one  applicable  royalty  payment shall be due on the sale of
each Licensed Product.

         4.4 For purposes of determining  the amount of royalties  payable under
Section 4.3, a sale in a foreign  currency shall be converted into U.S.  dollars
at an exchange  rate as  published on the last  business  day of the  applicable
Fiscal  Quarter in the  Exchange  Rate  section of the U.S.  edition of the WALL
STREET JOURNAL.  In the event such rate is not available,  a comparable exchange
rate shall be mutually agreed upon by the parties.

         4.5  Royalty   payments  due  to  Sheffield  from  Inpharzam  shall  be
accompanied by a written  report of all Net Sales during the  applicable  Fiscal
Quarter and will be paid in U.S. dollars.

         4.6      Records

                  Both parties  shall  maintain  accurate and complete  records,
which shall be available  for review and audit by the other party at  reasonable
times, as set forth hereinafter.

         4.7 Upon the request of  Sheffield,  Inpharzam  will  permit,  and will
cause its sublicensees to permit,  an independent  certified  public  accountant
selected by Sheffield and reasonably acceptable to Inpharzam to have access, not
more than twice in each calendar year,  during  regular  business hours and upon
reasonable notice to

                                      -16-

<PAGE>
Inpharzam   and  its   sublicensees,   to  the  records  of  Inpharzam  and  its
sublicensees,  which may be necessary  to verify the  accuracy of the  quarterly
reports made during the previous Fiscal Year. Said accountant shall not disclose
to Sheffield any information  except that which,  in the reasonable  judgment of
Inpharzam, should properly have been contained in such quarterly report.

         4.8  Sheffield  and Inpharzam  agree and  acknowledge  that all amounts
payable to Sheffield  under this Agreement shall be paid in full by Inpharzam to
Sheffield  without  deduction for any withholding or similar tax. At the written
request of Inpharzam  made to Sheffield from time to time,  Sheffield  agrees to
execute  and  deliver  such forms as may be  delivered  to  Sheffield  to permit
Inpharzam to take advantage of any withholding tax exemptions or reductions that
may be  available  under  applicable  tax  treaties or tax laws with  respect to
amounts payable to Sheffield under this Agreement.

         4.9      Regulatory

                  Inpharzam or its Affiliates  shall have,  consistent  with the
guidelines set forth in the Development  Plan, the exclusive  authority over all
clinical studies and for preparing, filing, and obtaining approval of the NDA in
the  United  States  and the  appropriate  marketing  approvals  throughout  the
Territory.  Such authority shall include,  but not be limited to, Inpharzam's or
its Affiliates'  determination  of which medicines used in the Delivery  Systems
shall be filed for approval in which countries and when.

         4.10     Co-promotion Rights

                  Concurrent  with its  execution of this  Agreement,  Inpharzam
grants to Sheffield a right to co-promote Licensed

                                      -17-

<PAGE>
Products in the U.S. market consistent with the principles set forth in Appendix
H hereto ("Co-promotion  Rights").  Prior to submission of the first application
to the FDA for  authority  to market a Licensed  Product,  but in no event later
than twelve  months  after the  execution  of this  Agreement,  Inpharzam or its
designee and Sheffield  shall conclude  negotiations of the terms and conditions
of such Co-promotion Rights and the parties shall agree upon a Commercialization
Plan. The  Commercialization  Plan shall establish the minimum  requirements for
each of the marketing entities including but not limited to necessary personnel,
geographic   territories,   and  medical   specialties,   and  provide  for  the
establishment of a co-marketing  committee.  The co-marketing committee shall be
chaired by Inpharzam or its designee,  and Inpharzam shall choose the trademarks
for the products and all details of the marketing program.

                                      -18-

<PAGE>
5.       Representations, Warranties and Additional Covenants

         5.1 Sheffield hereby represents and warrants to Inpharzam that:

                  (a)  Sheffield  is  a  corporation  duly  organized,   validly
existing  and in good  standing  under the laws of the State of Delaware and has
all  corporate  power  and  authority  to carry  on its  business  as now  being
conducted  and to own its  properties  and is duly  licensed or  qualified  as a
foreign  corporation in each  jurisdiction in which its failure to qualify would
have  a  material  adverse  effect  on  the  business,  financial  condition  or
operations of Sheffield.

                  (b) Sheffield has full corporate  power and authority to enter
into this Agreement and to consummate the transactions  contemplated hereby. The
execution,  delivery and  performance  of this  Agreement by Sheffield have been
duly authorized by all requisite  corporate action. This Agreement has been duly
executed  and  delivered  by  Sheffield  and  constitutes  a valid  and  binding
obligation enforceable in accordance with its terms, subject, as to enforcement,
to applicable bankruptcy, reorganization, insolvency, moratorium, and other laws
affecting creditors' rights generally from time to time in effect.

                  (c) Neither Sheffield nor any of its Affiliates is a party to,
subject  to or bound by any  agreement  or any  judgment,  award,  order,  writ,
injunction or decree of any court,  governmental  body or arbitrator which would
conflict with or be breached by the  execution,  delivery or performance of this
Agreement  by  Sheffield  or  which  could  prevent  the  carrying  out of  this
Agreement.

                                      -19-

<PAGE>
                  (d) There is (i) no action,  suit,  dispute  or  governmental,
administrative,  arbitration or regulatory proceeding pending or, to Sheffield's
or its  Affiliates'  best  knowledge,  threatened nor (ii) to  Sheffield's  best
knowledge,  any  investigation  pending or  threatened  against or  relating  to
Sheffield which, in each case, could prevent the carrying out of this Agreement.

                  (e) All consents of third  parties,  governmental  authorities
and  non-governmental   self-regulatory  agencies,  and  all  filings  with  and
notifications  of  governmental  authorities,   regulatory  agencies  (including
non-governmental  self-regulatory agencies) or other entities which regulate the
business of Sheffield  necessary on the part of Sheffield to the  execution  and
delivery of this Agreement and the consummation of the transactions contemplated
hereby have been obtained or effected.

                  (f)  Subject  to the  terms  and  conditions  of  the  Siemens
Agreements, Sheffield is the sole and exclusive holder of the Sublicensed Patent
Rights and Technology  rights,  and such rights granted herein to Inpharzam will
not  violate  the rights of any third  party.  Further,  the  patents and patent
applications  set  forth in  Appendix  A are all of the  patents  licensed  from
Siemens  under the Basic  License  Agreement.  Sheffield  will  promptly  update
Appendix A from time to time, as necessary.

                  (g) To the best of Sheffield's knowledge,  as of the Effective
Date, it knows of no facts which would make the sublicense granted herein or the
patents  or  patent  applications  which  are the  subject  thereof  invalid  or
defective,  and it  knows of no third  party  patents  which  would,  or  patent
applications which if

                                      -20-

<PAGE>
issued  would,  be infringed by either party  operating  under the terms of this
Agreement.  Sheffield  agrees to make  Inpharzam  aware of any such third  party
patents and applications promptly upon becoming aware of the same.

         5.2 Inpharzam hereby represents and warrants to Sheffield that:

                  (a)  Inpharzam  is  a  corporation  duly  organized,   validly
existing  and in  good  standing  under  the  laws  of  Switzerland  and has all
corporate  power and  authority to carry on its business as now being  conducted
and to own its  properties  and is  duly  licensed  or  qualified  as a  foreign
corporation in each  jurisdiction,  in which its failure to qualify would have a
material  adverse effect on the business,  financial  condition or operations of
Inpharzam.

                  (b) Inpharzam has full corporate  power and authority to enter
into this Agreement and to consummate the transactions  contemplated hereby. The
execution,  delivery and performance of this Agreement have been duly authorized
by all requisite  corporate  action.  This  Agreement has been duly executed and
delivered  by  Inpharzam  and  constitutes  a valid and  binding  obligation  of
Inpharzam, enforceable in accordance with its terms, subject, as to enforcement,
to applicable bankruptcy, reorganization, insolvency, moratorium, and other laws
affecting creditors' rights generally from time to time in effect.

                  (c) Neither  Inpharzam,  nor any Affiliate of Inpharzam,  is a
party to,  subject to or bound by any agreement or any judgment,  award,  order,
writ, injunction or decree of any court, governmental body or arbitrator,  which
would conflict with or be breached by the execution,  delivery or performance of
this

                                      -21-

<PAGE>
Agreement  by  Inpharzam  or  which  could  prevent  the  carrying  out of  this
Agreement.

                  (d) There is (i) no action,  suit,  dispute  or  governmental,
administrative,  arbitration or regulatory proceeding pending or, to Inpharzam's
best  knowledge,   threatened  nor  (ii)  to  Inpharzam's  best  knowledge,  any
investigation  pending or  threatened  against or relating to  Inpharzam  or its
Affiliates  which,  in  each  case,  could  prevent  the  carrying  out of  this
Agreement.

                  (e)  All   consents  of  third   partes   including,   without
limitation,   governmental  authorities  and  non-governmental   self-regulatory
agencies,  and all filings with and  notifications of governmental  authorities,
(including  non-governmental  self-regulatory  agencies)  regulatory agencies or
other  entities,  which  regulate the  business of  Inpharzam or its  Affiliates
necessary  on the  part of  Inpharzam  to the  execution  and  delivery  of this
Agreement and the consummation of the transactions contemplated hereby have been
obtained or effected.

                  (f) All Licensed  Products  labeled,  advertised,  and sold by
Inpharzam,  its Affiliates and its sublicensees  shall be in compliance with all
applicable  requirements  of the Food,  Drug and Cosmetic Act and all other laws
and regulations applicable thereto.

         5.3 The  representations  and  warranties  of the  parties set forth in
Sections 5.1 and 5.2 shall survive the  termination,  cancellation or expiration
of this Agreement without limitation.

         5.4      Sheffield and Inpharzam and its Affiliates further agree
as follows:

                                      -22-

<PAGE>
                  (a) Licensed Products will be manufactured, stored and sold in
compliance  with all applicable  requirements of the Food, Drug and Cosmetic Act
and regulations promulgated thereunder.

                  (b)  Sheffield  shall  disclose to Inpharzam and Inpharzam and
its Affiliates  shall disclose to Sheffield any reports or other  knowledge they
receive  with  respect  to  adverse  drug  experiences,  mislabeling,  stability
failures  or  contaminations,  to the  extent  that  those  items  relate to the
Delivery  System  or  the  Licensed  Products.  Sheffield,   Inpharzam  and  its
Affiliates  shall  comply  with FDA  requirements  for  reporting  adverse  drug
experiences.

                  (c) Except as otherwise  expressly  provided herein,  all data
pertaining  to the  Technology  generated  prior to the  Effective  Date of this
Agreement and pursuant to this Agreement shall be available to Inpharzam,  which
shall have the unrestricted  right to use such data in the Field anywhere in the
Territory.

                  (d) Any written information,  submitted by one party, or by an
Affiliate  of one party,  to the other  party,  or to an  Affiliate of the other
party, that is designated  "Confidential" shall be treated as confidential,  and
reasonable  diligence  will be used not to disclose or make  available  any such
confidential  information to any third party for the term of this Agreement, and
for a period of five (5) years following termination, cancellation or expiration
hereof.

                  An oral  disclosure,  if reduced to writing by the  disclosing
party and submitted to the party that received the oral disclosure within thirty
(30) days of the oral disclosure, will be deemed confidential.

                                      -23-

<PAGE>
                           Confidential    Information    shall   not    include
information:

                           (i)  that  can be  demonstrated  to have  been in the
public domain prior to the date of its receipt;

                           (ii)  that  becomes  part  of the  public  domain  by
publication, or otherwise, not due to any unauthorized act or omission;

                           (iii) that is supplied  by a third party  lawfully in
possession of same and not under any obligation of  confidentiality to Sheffield
or Inpharzam or its Affiliates with respect to the information; or

                           (iv) that was known to  Sheffield or Inpharzam or its
Affiliates  prior to the date of its disclosure,  such knowledge being evidenced
by written records.

         However,  nothing set forth in this subsection  shall prevent any party
or its Affiliates  from making a disclosure  that is required by applicable laws
or regulations.

                                      -24-

<PAGE>
6.       Business Decisions and Commercial Efforts

         6.1 Subject to the  Co-promotion  Rights set forth in Section 4.10, all
business  decisions  related to the  Licensed  Products in the Field  including,
without limitation,  regulatory activities, sale price and promotion of products
covered under this Agreement shall be within the sole discretion of Inpharzam.

         6.2 Inpharzam hereby agrees that it shall use  commercially  reasonable
efforts,  or shall cause its Affiliates to use commercially  reasonable efforts,
to seek FDA approval for and to market and sell  Licensed  Products in the Field
in the U.S., and to seek Non-US Regulatory  Authority approval for and to market
and sell Licensed Products in the Field in the remainder of the Territory.

         6.3 In the  event  that  Inpharzam  makes a  decision  not to seek  FDA
approval for and/or a decision  not to market and sell any Licensed  Products in
the U.S. or sublicense a third-party  to do the same,  Inpharzam  shall grant to
Sheffield an exclusive sublicense,  with the right to grant further sublicenses,
in the  U.S.  in and to all of the  rights  acquired  by  Inpharzam  under  this
Agreement,  for which  exclusive  sublicense  Sheffield  shall pay to  Inpharzam
either:

                  (a) in the  event  that  Sheffield  does not  grant a  further
sublicense,  (i) [TEXT  OMITTED]  Inpharzam's  total  expenditures,  based  upon
Inpharzam's normal accounting  methods,  in developing Licensed Products for and
seeking FDA approval for the U.S.  market and (ii) [TEXT OMITTED] of Sheffield's
Net  Sales  (as  defined  in  subsection  1.17 of this  Agreement,  substituting
Sheffield for Inpharzam) of Licensed Products; or

                                      -25-

<PAGE>
                  (b)  in  the  event  that   Sheffield   does   grant   further
sublicenses,  [TEXT  OMITTED]  of all  milestone,  royalty  and  other  payments
received from sublicensees.

                                      -26-

<PAGE>
7.       Data

                  Sheffield and  Inpharzam  agree as follows with respect to the
data related to the  Technology  generated  pursuant to this  Agreement  and the
NDA's:

                  (a) Subject to the  Co-Promotion  Rights sets forth in Section
4.10,  Inpharzam shall have the exclusive right to use such data in the Field in
connection with its commercialization of the Licensed Products.

                  (b) Sheffield shall have the right to use such data outside of
the Field.

                  (c) Upon the  expiration  of the last  Valid  Claim  under the
Sublicensed  Patent  Rights,  Inpharzam  shall  have  the  right to use all data
related to the Technology generated pursuant to this Agreement for all purposes,
and shall have the right to make,  have  made,  use and sell  Licensed  Products
[TEXT OMITTED].

                  (d)  Inpharzam  agrees that it will share,  and will cause its
Affiliates and sublicensees to share, data relating to the Delivery System,  but
not to  Formulations,  with  Sheffield and other  licensees of Sheffield if such
other  licensees  similarly  agree to and do in fact share  their such data with
Inpharzam.

                                      -27-

<PAGE>
8.       Indemnification and Infringement

         8.1  Inpharzam and  Sheffield  shall each  indemnify and hold the other
harmless  from and  against any costs,  expenses  or damages  which arise from a
breach of their respective obligations, covenants, representations or warranties
herein, excluding, however, any amounts representing loss of profits.

         8.2 Inpharzam agrees to indemnify and hold Sheffield  harmless from and
against any costs,  expenses or damages  resulting from or otherwise arising out
of manufacturing defects in Licensed Products. Sheffield agrees to indemnify and
hold  Inpharzam  harmless  from and  against  any  costs,  expenses  or  damages
resulting from or otherwise arising out of manufacturing  defects in the Device.
Notwithstanding  the  provisions  of this  Section 8.2, in no event shall either
party be liable to the other party for any  indirect or  consequential  damages,
including but not limited to loss of profit or interest,  production  stoppages,
operation  breakdowns,  handling  or labor  costs or loss of data and  retrieval
costs, nor for any punitive damages, except where such liability is mandatory by
law due to intent or gross negligence.

         8.3 The party obligated to provide indemnity pursuant to this Article 8
is  hereinafter  referred to as the  "Indemnifying  Party".  Promptly  after the
receipt by any party  hereto of notice of (a) any claim or (b) the  commencement
of any action or proceeding, such party will, if a claim with respect thereto is
to be made against any party  obligated to provide  indemnification  pursuant to
this Agreement, give such Indemnifying Party written notice of such claim or the
commencement of such action or proceeding.  Such  Indemnifying  Party shall have
the right, at its option, to

                                      -28-

<PAGE>
compromise  or defend,  at its own expense and by its  counsel,  any such matter
involving the asserted liability of the party seeking such indemnification. Such
notice,  and the  opportunity  to  compromise  or defend,  shall be a  condition
precedent to any liability of the Indemnifying  Party under the  indemnification
agreement contained in this Agreement.

                  In the event that any  Indemnifying  Party shall  undertake to
compromise or defend any such asserted  liability,  it shall promptly notify the
party seeking  indemnification  of its intention to do so, and the party seeking
indemnification  agrees to cooperate fully with the  Indemnifying  Party and its
counsel in the compromise of, or defense against,  any such asserted  liability.
In any event, the indemnified party shall have the right, at its own expense, to
participate  in the  defense  of such  asserted  liability,  provided  that  the
Indemnifying  Party's  counsel  shall make all final  decisions  concerning  the
defense or compromise or settlement of such claim or litigation.

         8.4 In the event a third  party  appears to be  infringing  one or more
Licensed  Patents,  Sheffield shall, at its own expense,  take whatever steps in
its own and sole  discretion it deems advisable  including,  but not limited to,
settlement  or the filing of suit for  damages or to enjoin such sales or offers
for sale by such third party.  Inpharzam  agrees,  upon  reasonable  notice,  to
cooperate  and, to the extent deemed  necessary or desirable by Sheffield and at
Sheffield's expense,  participate in any suit to enjoin such infringement and to
collect, for Sheffield's sole and exclusive benefit any and all damages, profits
and awards of any nature recoverable for such infringement.

                                      -29-

<PAGE>
         8.5  Should  Sheffield  elect not to take any  action,  or fail to take
action  within  thirty (30) days  following  notice by  Inpharzam of an apparent
infringement,  Inpharzam shall have the right, at its expense,  to take whatever
steps  in its own and sole  discretion  it deems  advisable  including,  but not
limited to, settlement or the filing of suit for damages or to enjoin such sales
or offers for sale by such third  party.  Sheffield  agrees to perform  all acts
which are or may become  necessary to vest in  Inpharzam  the right to institute
any such suit and will,  upon  reasonable  notice,  cooperate and, to the extent
deemed  necessary  or  desirable  by  Inpharzam  and  at  Inpharzam's   expense,
participate  in any  suit  to  enjoin  such  infringement  and to  collect,  for
Inpharzam's sole and exclusive benefit, any and all damages,  profits and awards
of any nature recoverable for such infringements.

         8.6 In the  event a  third-party  is  infringing  a Valid  Claim of the
Sublicensed  Patent Rights,  then on request from Inpharzam  Sheffield shall, at
Sheffield's  sole discretion,  take reasonable  action to remove such infringing
activity or grant Inpharzam the right to bring suit. In the event that Sheffield
elects to grant  Inpharzam the right to bring suit,  Inpharzam shall have during
the  pendency  of the suit the right to  deposit in an  interest-bearing  escrow
account  fifty-percent  (50%) of the royalties payable to Sheffield with respect
to the Net Sales of Licensed  Products in the country in which the  infringement
is occurring. Upon final determination of the suit, all royalties held in escrow
shall be released to  Sheffield,  less the  reasonable  costs and attorney  fees
incurred by Inpharzam in connection  with such suit,  which costs and fees shall
not exceed the total amount of royalties held in escrow.

                                      -30-

<PAGE>
         8.7 In the event that any  third-party  raises  claims  against or sues
Inpharzam in connection with the Device, Sheffield shall defend,  indemnify, and
hold  harmless  Inpharzam  from and with respect to any claim,  demand,  damage,
liability,   cause  of  action,  costs  and/or  expenses  (including  reasonable
attorneys' fees) of whatever kind or nature, whether arisen, arising or to arise
in the future  from or  directly  or  indirectly  related  to,  patents,  patent
applications, copyrights, or similar. Sheffield shall at its sole discretion and
cost acquire a license on such  intellectual  property  rights.  Sheffield shall
alternatively  cause the Devices to be  modified  so as to become  noninfringing
provided such modification does not violate  Inpharzam's  regulatory  approvals,
with the written consent of Inpharzam.  In any event,  Sheffield shall take form
Inpharzam  Devices  which are not  salable  due to  infringement  and  reimburse
Inpharzam the price paid therefor. The aforementioned  liability shall, however,
only be valid if Inpharzam  informs  Sheffield to this effect  without any delay
and in writing, does not acknowledge or accept of its own accord any such claims
and does not  conduct  negotiations  with  such  third-party  without  the prior
consent of Sheffield and in accordance with the instructions of Sheffield.

         8.10 The  provisions of this Article 8 shall  survive the  termination,
cancellation or expiration of this Agreement without limitation.

                                      -31-

<PAGE>
9.       Termination

         9.1 In the event of any default by either  party,  or an  Affiliate  of
either party,  in the  performance of any of the material terms or conditions of
this  Agreement,  the other party may terminate  this Agreement upon ninety (90)
days' written notice; provided, however, that (a) if during such ninety (90) day
period the party against whom the default is claimed cures such default,  or (b)
if such breach  cannot be cured  within such ninety (90) day period,  such party
takes reasonable steps to commence and proceeds  diligently after default,  and,
in fact,  cures such default within a reasonable  period of time, or (c) if such
default  is cured in any  other  manner  satisfactory  to the  other  party as a
substitute for full performance, then this Agreement will continue in full force
and effect as if the default had not occurred.

         9.2 Upon termination of this Agreement for Sheffield's  failure to cure
a material breach,  the NDA's and regulatory and marketing  approval  throughout
the Territory shall be retained and owned by Inpharzam.

         9.3 This  Agreement may be  terminated  (a) in the event that a case or
proceeding shall be commenced and continue  undismissed or unstayed for a period
of thirty  (30) days  against  either  party or either  party  shall  commence a
voluntary  case, in either case seeking relief under the bankruptcy  laws or any
other law  relating to  bankruptcy,  insolvency,  reorganization,  winding up or
composition or adjustment of debts,  in each case as now or hereafter in effect,
or (b)  either  party  shall  apply for,  consent  to, or fail to  contest,  the
appointment of a receiver,  liquidator,  custodian,  trustee or the like of such
party or for all or any part

                                      -32-

<PAGE>
of its  property,  or (c) either party shall make a general  assignment  for the
benefit of its  creditors,  or (d) either party shall fail,  or admit in writing
its inability, to pay, or generally not be paying, its debts as they become due,
in each case, by the other party.

         9.4 All  rights  and  sublicenses  granted  under or  pursuant  to this
Agreement are, and shall  otherwise be deemed to be, for the purposes of Section
365(n)  of  Title  11,  U.S.  Code   ("Bankruptcy   Code")   license  rights  to
"intellectual property" as defined under Section 101(60) of the Bankruptcy Code.
The parties  agree that  Inpharzam,  as  sublicensee  of such rights  under this
Agreement,  shall retain and may fully  exercise all of its rights and elections
under the Bankruptcy Code.

         9.5  Termination  of this  Agreement  for any reason  shall not relieve
either party of any obligations occurring prior to such termination.

         9.6 The sublicenses  granted hereunder shall terminate upon termination
or cancellation of this Agreement.

         9.7 Upon the  expiration of the last Valid Claim under the  Sublicensed
Patent Rights, Inpharzam shall have a royalty free license to continue to market
all Licensed Products royalty free.

         9.8 Upon termination of this Agreement for Inpharzam's  failure to cure
a material  breach of this  Agreement,  in addition to any other  remedies  that
Sheffield may have available, all rights in and to the Sublicensed Patent Rights
and the Technology  granted by Sheffield to Inpharzam  hereunder shall revert to
Sheffield.

                                      -33-

<PAGE>
         9.9 The  provisions  of Sections 5.1 and 5.2, and Articles 8, 14 and 16
shall survive termination,  cancellation or expiration of this Agreement without
limitation.  The  provisions  of subsection  5.4(e) shall  survive  termination,
cancellation or expiration of this Agreement to the extent provided therein.  In
the event of  termination  each party shall return and/or destroy all copies and
other tangible  forms of the other's  confidential  information  except that one
copy may be retained by legal counsel for archival and evidentiary purposes.

                                      -34-

<PAGE>
10.      Events of Force Majeure

         10.1  "Force  Majeure"  shall  mean  any  cause  which  is  beyond  the
reasonable  control  of the party  invoking  Force  Majeure  and  which,  by the
exercise of reasonable diligence, such party is unable to prevent, including but
not limited to, and whether or not of the same class or kind as, the  following:
any law, decree,  regulation,  order, or request of any  governmental  authority
(national,  state or regional),  nationalization,  expropriation,  confiscation,
requisition,  riot,  war,  hostilities,  public  disturbance,  act of the public
enemy,  act of terrorism,  strike lockout or other labor dispute,  fire,  flood,
earthquake,  storm, tidal wave,  explosion,  Act of God, accident of navigation,
breakdown or failure of transportation or transportation facilities.

         10.2 If either party is  prevented  from or delayed in carrying out any
provision  of this  Agreement  by  reason  of Force  Majeure,  the  party  whose
performance is so prevented, delayed, interfered with or restricted, upon prompt
written  notice  thereof  to  the  other  party,  shall  be  excused  from  such
performance  to the extent and  during  the  period of such  prevention,  delay,
interference or restriction.

         10.3 The  provisions  of this  Article 10 shall not be  available  to a
party, if such party fails to use reasonable  diligence to remedy the applicable
situation  described in subsection 10.1 above in an adequate manner and with all
reasonable  dispatch or if such  applicable  situation  is caused by such party,
except that this  Article 10 shall not require the  unreasonable  settlement  of
controversies by acceding to the demands of the opposing party or parties.

                                      -35-

<PAGE>
11.      Specific Performance

                  Each  party  agrees  that  a  violation  by it of  any  of its
covenants and  undertakings  contained in this  Agreement may cause  irreparable
injury to the other, and that such other party shall be entitled, in addition to
any other rights and remedies it may have  hereunder or at law or in equity,  to
an injunction or similar  equitable  remedy  enjoining and  restraining any such
violation or threatened violation thereof.

                                      -36-

<PAGE>
12.      Further Assurances

         Each of the  parties  shall,  from time to time  during the term of the
Agreement  upon  request by the other,  execute  and  deliver  all such  further
documents  or  instruments  as may be  required  in order to give  effect to the
purpose and intent of this  Agreement.  Without  limiting the  generality of the
foregoing,  the  obligations  of the parties  hereunder  are  undertaken  with a
principal  objective of complying  with all  pertinent  provisions of applicable
law,  orders  and  regulations  relating  to the  manufacture,  use or  sale  of
pharmaceutical  products, and the parties shall take all necessary action as may
be required to comply with such provisions.

                                      -37-

<PAGE>
13.      Assignment

         This  Agreement  shall be binding  upon and inure to the benefit of the
parties  hereto  and  their  respective  assigns  and  successors  in  interest;
provided,  however,  that  neither  party may assign or  otherwise  transfer its
interest, or any part thereof, under this Agreement to any other person, firm or
corporation  without the written consent of the other party, which consent shall
not be unreasonably withheld,  except (a) in connection with the transfer of all
or  substantially  all of the  assets of  Inpharzam  or  Sheffield  to any other
person,  whether by means of a merger, asset or stock sale or otherwise,  or (b)
to an  Affiliate,  provided  that the  transferring  party  shall  guaranty  its
transferee-Affiliate's performance and compliance hereunder and shall notify the
other party in writing of such transfer.

                                      -38-

<PAGE>
14.      Choice of Law

         This Agreement shall be governed by, and construed in accordance  with,
the laws of the State of New York,  without  giving effect to its  principles of
conflicts of law.

                                      -39-

<PAGE>
15.      Contractual Relationship

                  Sheffield and Inpharzam are independent  contractors and shall
not be deemed to be  partners,  joint  venturers  or each  other's  agents,  and
neither  shall have the right to act on behalf of the other  except as expressly
provided hereunder or otherwise expressly agreed to in writing.

                                      -40-

<PAGE>
16.      Notices

                  All notices and other  communication  required or permitted to
be given  under or in  connection  with this  Agreement  shall be in writing and
shall be deemed  given if  delivered  personally  or by  facsimile  transmission
(receipt verified),  express courier service (signature  required),  telexed, or
mailed by  registered  or certified  mail (return  receipt  requested),  postage
prepaid, to the parties at the following addresses (or at such other address for
a party as shall be specified by like notice; provided, that notices of a change
of address shall be effective only upon receipt thereof):

If To Inpharzam:                              If To Sheffield:

Inpharzam International                       Sheffield Pharmaceuticals

Via Industria 1                               37 South Main Street
6814 Cadempino, Switzerland                   Pittsford, NY 14534
Attn: Managing Director                       Att: Chairman
Fax: 011 41919664351                          Fax: 716-385-0813

With a copy to:                               With a copy to:

Zambon Corporation                            Sheffield Pharmaceuticals
One Meadowlands Plaza                         425 South Woodsmill Road
East Rutherford, NJ 07073 USA                 Suite 270
Att: General Manager                          St. Louis, MO 63017
Fax: 201/896-2209                             Att: Corporate Secretary
                                              Fax: 314-579-9799

                                      -41-

<PAGE>
17.      Miscellaneous

         17.1 This Agreement  (including the Appendices attached hereto) and the
Confidentiality  Agreement  constitute the entire agreement  between the parties
and, except as noted in Article 2 of this Agreement, supersede all prior written
or oral agreements or understandings concerning the subject matter thereof or in
conflict with their terms.

         17.2  Any  controversy  or claim  arising  out of or  relating  to this
Agreement,  or the parties' decision to enter into this Agreement, or the breach
thereof, including,  without limitation, any dispute relating to patent validity
or infringement arising under this Agreement, shall be settled by arbitration in
accordance with the applicable  rules of the American  Arbitration  Association,
and judgment upon the award  rendered by the  arbitrators  may be entered in any
court having  jurisdiction  thereof.  Such arbitration shall be conducted with a
panel of three (3)  arbitrators;  each party shall select one arbitrator and the
two selected  arbitrators  shall select the third. The arbitration shall be held
in New York City and the  arbitrators  shall  apply the  substantive  law of the
State of New  York,  except  that the  interpretation  and  enforcement  of this
arbitration provision shall be governed by the U.S. Federal Arbitration Act. The
arbitrators  shall not award either party punitive damages and the parties shall
be deemed to have waived any right to such damages.

         17.3  Each  party  hereby   consents   that  it  shall  be  subject  to
jurisdiction  in New York in any  legal  proceeding  or  equitable  action  that
relates in any way to this Agreement, and further consents to venue for any such
proceeding or action in the United

                                      -42-

<PAGE>
States District Court for the Southern  District of New York.  Inpharzam  hereby
designates Zambon  Corporation as its agent for service of process in connection
with any legal action which may be brought hereunder and agrees to maintain such
designation during the term hereof.

         17.4 No  modification  or waiver of any of the terms of this  Agreement
shall be deemed  valid  unless it is in writing and signed by the party  against
whom such modification is sought to be enforced.  The failure of either party to
insist upon the strict  performance  of any term of this Agreement or the waiver
by either  party of any  breach  under  this  Agreement  shall not  prevent  the
subsequent  strict  enforcement of such term and shall not be deemed a waiver of
any subsequent breach.

         17.5 In the event any  court  declares  illegal  or  unenforceable,  as
written or applied,  any provision or portion  hereof,  such provision  shall be
treated as if it had been deleted or rendered  inapplicable to the situations to
which such provision cannot be legally applied.

         17.6 Neither party shall publicly disclose,  directly or through any of
its  representatives,  the subject matter or terms and conditions hereof without
the prior consent of the other, except to the extent of disclosures which either
party may be required to make by applicable laws or regulations.

         17.7 Each  party  agrees  that,  unless  the other  party has given its
written consent  thereto,  no public  announcement or other  disclosure shall be
made  by  either  party  or  any  of  their  representatives,   including  their
consultants, that might prejudice the rights of the other.

                                      -43-

<PAGE>
         17.8  Inpharzam  shall cause all  Licensed  Products  or the  packaging
therefor sold in the Territory by it, its Affiliates and its  sublicensees to be
labelled in  accordance  with any  obligations  undertaken  by  Sheffield in the
Siemens Agreements,  and in accordance with all applicable laws and regulations,
including  but not  limited  to the  marking  provisions  set  forth in Title 35
Section 287 of the United States Code.

                                      -44-

<PAGE>
         IN WITNESS WHEREOF,  the parties hereto have executed this Agreement as
of the respective dates written below.

                                                SHEFFIELD PHARMACEUTICALS, INC.


                                                By: /S/ THOMAS M. FITZGERALD
                                                    ----------------------------

                                                Name:  THOMAS M. FITZGERALD

                                                Title: CHAIRMAN

                                                Dated: JUNE 15, 1998


                                                INPHARZAM INTERNATIONAL, S.A.

                                                By: /S/ ANDREA ZAMBON
                                                    ---------------------------

                                                Name:  ANDREA ZAMBON

                                                Title: CHIEF EXECUTIVE OFFICER

                                                Dated: JUNE 15, 1998


                                      -45-

<PAGE>
                                  CONFIDENTIAL

                                   APPENDIX A

                         PATENTS AND PATENT APPLICATIONS

                                 [TEXT OMITTED]


<PAGE>
                                  CONFIDENTIAL

                                   APPENDIX B








                         FORM OF SUBSCRIPTION AGREEMENT

                                       FOR

                            SHARES OF COMMON STOCK OF

                         SHEFFIELD PHARMACEUTICALS, INC.



                                  INSTRUCTIONS

           IMPORTANT: PLEASE READ CAREFULLY BEFORE SIGNING ON PAGE 8.
                         SIGNIFICANT REPRESENTATIONS ARE
                                CONTAINED HEREIN






<PAGE>
                             SUBSCRIPTION AGREEMENT


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

Ladies and Gentlemen:

         1. SUBSCRIPTION.  The undersigned  (sometimes referred to herein as the
"Investor")  hereby subscribes for and agrees to purchase       shares of Common
Stock,  par value,  $.01 per share,  of  Sheffield  Pharmaceuticals,  Inc.  (the
"Company"), on the terms and conditions described herein and in the Confidential
Private Placement Memorandum ("Memorandum") dated June    , 1998 of the Company,
together with all supplements, if any, relating to this offering.

         2.  SUBSCRIPTION  AGREEMENT;  PURCHASE PRICE. The undersigned  herewith
delivers  to the  Company  two  manually  executed  copies of this  Subscription
Agreement.  The undersigned hereby agrees to remit to the Company       ($.     
per share) (the  "Purchase  Price") on the date  hereof by wire  transfer to the
following account: Chase Manhattan Bank, 11 West 51st Street, New York, New York
10119, Account No.     , ABA      .

         3. DELIVERY OF SHARES.  The Shares  subscribed  for herein shall not be
deemed  issued  to or  owned  by  the  undersigned  until  two  copies  of  this
Subscription  Agreement  have been  executed and delivered to the Company by the
undersigned,  such  agreements  have been  countersigned  by the Company and the
Purchase Price has been remitted to the Company.  Upon such execution,  delivery
and remittance a certificate representing the Shares shall promptly be delivered
to the undersigned.

         4. DISCLOSURE. Because this offering is limited to accredited investors
as defined  in  Section  2(15) of the U.S.  Securities  Act of 1933,  as amended
("Securities  Act"), and Rule 501 promulgated  thereunder,  in reliance upon the
exemption  contained in Sections  3(b),  4(2) or 4(6) of the  Securities Act and
applicable state securities laws, the Shares are being sold without registration
under the Securities Act. The undersigned acknowledges receipt of the Memorandum
and all exhibits listed therein and represent that the undersigned has carefully
reviewed and understand the Memorandum  and its exhibits.  The  undersigned  has
received  all  information   and  materials   regarding  the  Company  that  the
undersigned has requested.

         The undersigned fully understands that an investment in the Shares is a
speculative investment that involves a high degree of risk of loss of its entire
investment.  The undersigned  fully understands the nature of the risks involved
in purchasing the


<PAGE>
Shares and the  undersigned  is qualified by its  knowledge  and  experience  to
evaluate  investments of this type. The undersigned has carefully considered the
potential  risks relating to the Company and purchase of the Shares and have, in
particular, reviewed each of the risks set forth or incorporated by reference in
the Memorandum.  The undersigned has had the opportunity to ask questions of and
receive  answers  from  officers  and  other   representatives  of  the  Company
concerning the Company and the terms and conditions of a proposed  investment in
the Company and the undersigned's advisors, if any, and the undersigned has also
had the  opportunity to obtain  additional  information  necessary to verify the
accuracy  of  information   furnished  about  the  Company.   Accordingly,   the
undersigned has independently evaluated the risks of purchasing the Shares.

         5.   INVESTOR   REPRESENTATIONS   AND   WARRANTIES.   The   undersigned
acknowledges,  represents  and  warrants  to, and agrees  with,  the  Company as
follows:

                  (a) The  undersigned  is aware  that an  investment  in Shares
involves  a high  degree  of  risk,  and the  undersigned  has  read  and  fully
understands  the  Memorandum,  including  the section  entitled  "Risk  Factors"
(Exhibit E).

                  (b) The undersigned acknowledges and is aware that there is no
assurance as to the future performance of the Company.

                  (c) The  undersigned  is  purchasing  the  Shares  for its own
account for investment and not with a view to or for sale in connection with the
distribution  of the  Shares,  nor with any  present  intention  of  selling  or
otherwise  disposing of all or any part of the Shares.  the  undersigned  agrees
that  (i) the  purchase  of the  Shares  is a  long-term  investment,  (ii)  the
undersigned  may have to bear the economic risk of investment  for an indefinite
period of time because the Shares have not been registered  under the Securities
Act and the  Shares  may never be  registered  and  cannot be  resold,  pledged,
assigned, or otherwise disposed of unless they are subsequently registered under
said Securities Act and under applicable securities laws of certain states or an
exemption from such registration is available.  The undersigned understands that
the  Company  is under no  obligation  to  register  the Shares or to assist the
undersigned  in complying with any exemption  from such  registration  under the
Securities Act or any state  securities laws. The undesigned  acknowledges  that
the  Company  will  place a legend on the  certificate  representing  the Shares
denoting the restrictions on the Shares.

                  (d) The undersigned has been given full and complete access to
information   regarding  the  Company  and  has  utilized  such  access  to  its
satisfaction  for the  purpose  of  obtaining  information  in  addition  to, or
verifying  information included in, the Memorandum and exhibits thereto, and the
undersigned has met with

                                       -2-

<PAGE>
officers of the Company for the purpose of asking  questions  of, and  receiving
answers from, such officers  concerning the terms and conditions of the offering
of the Shares and the business and  operations  of the Company and to obtain any
additional information, to the extent reasonably available.

                  (e) The  undersigned  has such  knowledge  and  experience  in
financial  and business  matters as to be capable of  evaluating  the merits and
risks  of an  investment  in the  Shares  and  has  obtained,  in its  judgment,
sufficient  information  from the Company to evaluate the merits and risks of an
investment in the Company.

                  (f)  The   undersigned   has  relied   solely   upon  its  own
investigation of the Company in making a decision to invest in the Company.

                  (g) The undersigned has received no representation or warranty
from the  Company  or any of its  officers,  directors,  employees  or agents in
respect  of its  investment  in the  Company  and has  received  no  information
(written or otherwise) from the Company  relating to the Company or its business
other than as set forth in the Memorandum.  The undersigned is not participating
in the offer as a result of or subsequent  to: (i) any  advertisement,  article,
notice or other  communication  published in any newspaper,  magazine or similar
media or broadcast over television, radio or the internet or (ii) any seminar or
meeting whose attendees have been invited by any general solicitation or general
advertising.

                  (h) The undersigned has had full  opportunity to ask questions
and to receive  satisfactory  answers  concerning the offering and other matters
pertaining to its  investment  and all such  questions have been answered to the
undersigned's full satisfaction.

                  (i) The undersigned has been provided an opportunity to obtain
any additional information concerning the offering and the Company and all other
information to the extent the Company  possesses such information or can acquire
it without unreasonable effort or expense.

                  (j) The undersigned is an "accredited  investor" as defined in
Section 2(15) of the Securities Act and in Rule 501 promulgated thereunder.

                  (k) The undersigned  understands  that (i) the Shares have not
been  registered  under the  Securities  Act or the  securities  laws of certain
states in reliance on specific exemptions from registration,  (ii) no securities
administrator of any state or the federal government has recommended or endorsed
this offering or made any finding or  determination  relating to the fairness of
an  investment  in  the  Company,  and  (iii)  the  Company  is  relying  on the
undersigned's representations and agreements for the purpose of

                                       -3-

<PAGE>
determining  whether this  transaction  meets the requirements of the exemptions
afforded by the Securities Act and certain state securities laws.

                  (l) The  undersigned  has been  urged by the  Company  to seek
independent advice from its professional advisors relating to the suitability of
an  investment  in the Company in view of the  undersigned's  overall  financial
needs and with respect to the legal and tax implications of such investment.

                  (m) The  undersigned  is authorized and qualified to become an
investor in the Company and the person  signing this  Subscription  Agreement on
behalf of the undersigned has been duly authorized by the undersigned to do so.

                  (n) The  undersigned  hereby  acknowledges  and is aware that,
except for any rescission rights that may be provided under applicable laws, the
undersigned is not entitled to cancel, terminate or revoke this subscription.

                  (o) The  undersigned  hereby  agrees that the  Memorandum  and
documents  related  thereto  and  attached  as  Exhibits  thereto  will  be kept
confidential  by  it;  provided,  however,  that  any  such  information  may be
disclosed   (i)  to  the   undersigned's   officers,   employees   and  advisors
(collectively,  the "Agents") who need to know such  information for the purpose
of evaluating  the purchase of the Shares  described in the Memorandum (it being
understood  that  such  Agents  shall  be  informed  by the  undersigned  of the
confidential nature of such information and shall be directed by the undersigned
to treat such  information  confidentially)  or (ii) as  required by law. In the
event disclosure of the Memorandum and documents  related thereto is required by
law,  the  undersigned  shall  promptly  notify the  Company of any  anticipated
disclosure obligation,  cooperate with the Company, at the Company's expense, in
its  efforts  to obtain a  protective  order or other  reliable  assurance  that
confidential treatment will be accorded to that portion of the Memorandum or the
documents  related  thereto that is required to be disclosed.  In addition,  the
undersigned  agrees  that,  without the prior  written  consent of the  Company,
neither the undersigned's  Agents nor the undersigned will disclose to any other
person the fact that the  Memorandum or the documents  related  thereto has been
made available to the undersigned or any of the terms, conditions or other facts
with respect thereto  (including the status thereof).  The term "person" as used
in this letter  agreement shall be broadly  interpreted to include the media and
any corporation, partnership, group, individual or other entity.

                  The undersigned agrees to undertake reasonable  precautions to
safeguard and protect the  confidentiality  of the  Memorandum and the documents
related  thereto and at the  undersigned's  sole expense to take all  reasonable
measures (including but not limited to court proceedings) to restrain its

                                       -4-

<PAGE>
Agents from prohibited or unauthorized  disclosure or uses of the Memorandum and
the documents related thereto.

         The undersigned shall promptly upon request redeliver to the Company or
destroy all written  material  containing or reflecting  any  information in the
Memorandum or the documents  related thereto  (whether  prepared by the Company,
its  advisors or  otherwise)  and will not retain any copies,  extracts or other
reproductions in whole or in part of such written material.

         6. INDEMNIFICATION. The undersigned hereby agrees to indemnify and hold
harmless  the  Company and its  respective  officers,  directors,  stockholders,
employees,  agents, and attorneys against any and all losses,  claims,  demands,
liabilities,  and  expenses  (including  reasonable  legal  or  other  expenses)
incurred by each such person in connection with defending or  investigating  any
such claims or  liabilities,  whether or not  resulting in any liability to such
person,  to which  any such  indemnified  party  may  become  subject  under the
Securities Act, under any other statute, at common law or otherwise,  insofar as
such losses, claims,  demands,  liabilities and expenses (a) arise out of or are
based upon any untrue  statement or alleged untrue  statement of a material fact
made by the  undersigned  and  contained in this  Subscription  Agreement or (b)
arise  out  of  or  are  based  upon  any  breach  by  the  undersigned  of  any
representation, warranty, or agreement made by the undersigned contained herein.

         7.  STOCK  PURCHASE  OPTION.  In the  event  that  the  Company  issues
additional  shares of Common  Stock after the date hereof in either a private or
public offering (an "Additional Offering"), the Company shall offer the Investor
the right to purchase an amount of additional  shares of Common Stock determined
based on the following formula:

                                  AS = AO x HS
                                            --
                                            OT

where "AS" means the number of  additional  shares to be offered for sale to the
Investor,  "AO"  means  the  number of  shares  of  Common  Stock  issued in the
Additional Offering, "HS" means the number of shares of Common Stock held by the
Investor  immediately  following the offering  contemplated by this Subscription
Agreement  (I.E.,         shares)  and "OT" means the number of shares of Common
Stock outstanding on the date of the issuance of the Shares contemplated by this
Subscription Agreement.

         The  Company  shall give the  Investor  written  notice of an  issuance
pursuant  to any  Additional  Offering  within  ten days  after the date of such
issuance, which notice shall state the number of additional shares of the Common
Stock that the Investor  may purchase  pursuant to this Section 7 as a result of
such Additional  Offering and the applicable  purchase price (which shall be the
same

                                       -5-

<PAGE>
purchase price per share paid for the shares of Common Stock sold in the related
Additional  Offering),  and the  Investor  shall  have 80 days  from the date of
receipt of such notice to deliver the purchase price for such additional  shares
to the Company.  Upon receipt of such purchase price, the Company shall promptly
issue such additional shares of Common Stock to the Investor.  In the event that
the Investor  fails to exercise its right to purchase all  additional  shares of
Common Stock offered to the Investor under this Section 7 in connection with any
Additional Offering, the Investor's rights under this Section 7 shall terminate.

         Any additional  shares of Common Stock issued to the Investor  pursuant
to this Section 7 shall be represented by a stock certificate that shall contain
a restrictive legend in substantially the form set forth under  "Restrictions on
Resale" above.

         As used in this Section 7, "Additional  Offering" shall not include (i)
the  issuance  of Common  Stock  issuable  upon the  exercise or  conversion  of
options,  warrants  on  other  rights  to  purchase  securities  of the  Company
outstanding  as of the date  hereof  or (ii) the  issuance  of  Common  Stock to
officers, directors or employees of the Company or any of its subsidiaries.

         8. SEVERABILITY:  REMEDIES. In the event any parts of this Subscription
Agreement are found to be void,  the remaining  provisions of this  Subscription
Agreement shall  nevertheless be binding with the same effect as though the void
parts were deleted.

         9.  GOVERNING LAW. This  Subscription  Agreement will be deemed to have
been made and  delivered  in New York City and will be governed as to  validity,
interpretation,  construction,  effect and in all other respects by the internal
laws of the State of New York.

         10. COUNTERPARTS. This Subscription Agreement may be executed in one or
more  counterparts,  each of which shall be deemed an original  but all of which
together  shall  constitute one and the same  instrument.  The execution of this
Subscription Agreement may be by actual or facsimile signature.

         11. NOTICES. All notices,  offers,  acceptance and any other acts under
this Subscription  Agreement (except payment) shall be in writing,  and shall be
sufficiently  given if  delivered  to the  addressees  in person,  by  overnight
courier  service,  or, if mailed,  postage  prepaid,  by certified  mail (return
receipt  requested),  and shall be effective five days after being placed in the
mail if mailed, or upon receipt or refusal of receipt,  if delivered  personally
or by  courier,  in each  case  addressed  to a party.  The  addresses  for such
communications shall be:


                                       -6-

<PAGE>
Investor:                           At the address designated on the signature
                                    page of this Subscription Agreement.

The Company:                        Sheffield Pharmaceuticals, Inc.
                                    425 South Woodsmill Road
                                    St. Louis, Missouri 63017
                                    Attention:  Loren Peterson
                                                President and
                                                Chief Executive Officer

In either case,
  with a copy to:                   Olshan Grundman Frome & Rosenzweig LLP
                                    505 Park Avenue
                                    New York, New York 10022
                                    Attention:  Daniel J. Gallagher, Esq.

or to such other  address as any of them,  by notice to the others may designate
from time to time.

         12. ORAL EVIDENCE.  This Subscription  Agreement constitutes the entire
agreement  between the parties  with  respect to the subject  matter  hereof and
supersedes all prior oral and written agreements between the parties hereto with
respect to the subject matter  hereof.  This  Subscription  Agreement may not be
changed,  waived,  discharged,  or  terminated  orally  but,  rather,  only by a
statement in writing signed by the party or parties against which enforcement or
the change, waiver, discharge or termination is sought.

         13.  SURVIVAL  OF  REPRESENTATIONS,   WARRANTIES  AND  AGREEMENTS.  The
representations,  warranties and agreements  contained  herein shall survive the
delivery of, and the payment for, the Shares.

         RESIDENTS  OF ALL  STATES:  THE  SHARES  OFFERED  HEREBY  HAVE NOT BEEN
REGISTERED  UNDER THE SECURITIES ACT, AS AMENDED,  OR THE SECURITIES LAWS OF ANY
STATE  AND ARE  BEING  OFFERED  AND  SOLD IN  RELIANCE  ON  EXEMPTIONS  FROM THE
REGISTRATION  REQUIREMENTS  OF SAID ACT AND SUCH LAWS. THE SHARES ARE SUBJECT TO
RESTRICTION ON  TRANSFERABILITY  AND RESALE AND MAY NOT BE TRANSFERRED OR RESOLD
EXCEPT AS PERMITTED  UNDER SAID ACT AND SUCH LAWS  PURSUANT TO  REGISTRATION  OR
EXEMPTION  THEREFROM.  INVESTORS  SHOULD BE AWARE THAT THEY WILL BE  REQUIRED TO
BEAR THE FINANCIAL  RISKS OF THIS  INVESTMENT FOR AN INDEFINITE  PERIOD OF TIME.
THE SHARES HAVE NOT BEEN APPROVED OR  DISAPPROVED BY THE SECURITIES AND EXCHANGE
COMMISSION,  ANY STATE SECURITIES COMMISSION OR OTHER REGULATORY AUTHORITY,  NOR
HAVE ANY OF THE FOREGOING  AUTHORITIES PASSED UPON OR ENDORSED THE MERITS OF THE
OFFERING  OR THE  ACCURACY  OR ADEQUACY  OF THIS  CONFIDENTIAL  MEMORANDUM.  ANY
REPRESENTATION TO THE CONTRARY IS UNLAWFUL.


                                       -7-

<PAGE>
                                 SIGNATURE PAGE


         IN WITNESS WHEREOF,  the undersigned has executed this Agreement on the
___ day of June, 1998.


                                             INPHARZAM INTERNATIONAL, S.A.


                                             BY:_______________________________


                                             NAME:_____________________________


                                             TITLE:____________________________


                                             __________________________________
                                             Address

                                             __________________________________


         ACCEPTED this _____ day of June, 1998 on behalf of the Company.

                                             SHEFFIELD PHARMACEUTICALS, INC.


                                             BY:_______________________________
                                                Name:
                                                Title:


                                       -8-

<PAGE>
                                  CONFIDENTIAL

                                   APPENDIX C

                   RESOLUTION OF SHEFFIELD BOARD OF DIRECTORS

               (To be attached after July 15, 1998 Board meeting)


<PAGE>
                                  CONFIDENTIAL

                                   APPENDIX D

                                DEVELOPMENT PLAN


                                 [TEXT OMITTED]



<PAGE>
                                  CONFIDENTIAL

                                   APPENDIX E

                                 PROMISSORY NOTE

FOR VALUE RECEIVED the undersigned, Sheffield Pharmaceuticals,  Inc., a Delaware
corporation  with  offices at 37 South Main Street,  Pittsford,  New York 14534,
promises to pay, in lawful money of the United  States of America,  to the order
of  Inpharzam   International,   S.A.,  at  Via  Industria  1,  6814  Cadempino,
Switzerland,  the principal sum of [TEXT OMITTED] without interest  according to
the following schedule:

                  [TEXT OMITTED]

                  [TEXT OMITTED]

                  [TEXT OMITTED]

                  [TEXT OMITTED]


or  earlier  as may be  provided  in  subsection  4.2(g) of the  Sublicense  and
Development  Agreement  between  Sheffield  Pharmaceuticals,  Inc. and Inpharzam
International, S.A.("Agreement") dated .

                  In the event of any default in payments as herein agreed or in
the event of a filing for  bankruptcy  or insolvency or any other act of default
as  provided in said  Agreement,  the entire  balance of this note shall  become
immediately due and payable at the election of the holder hereof, and a lien and
security  interest  shall be created in  accordance  with Title 11 of the United
States Code upon the intellectual property that is the subject of this Agreement
in  favor  of  Inpharzam  International,   S.A  upon  notice  delivered  to  the
undersigned of such election.

                  The  undersigned   further  agrees,   in  the  event  suit  is
instituted  to collect  this note or any  portion  thereof,  to pay all costs of
collection,  other costs and  reasonable  attorneys'  fees incurred by Inpharzam
International, S.A. in connection therewith.

                  This Promissory Note may be prepaid in whole or in part by the
undersigned without premium or penalty.

                  This   Promissory  Note  may  not  be  assigned  or  otherwise
transferred by Inpharzam  International,  S.A. without the prior written consent
of the  undersigned,  except  that no such  consent  shall be  required  for the
assignment  of this  Promissory  Note to an Affiliate (as the term is defined in
subsection 1.1 of the Agreement) of Inpharzam International, S.A.



<PAGE>

                  I hereby  certify  that this is one of the notes  described in
Section  4.2 of said  Agreement  between  Sheffield  Pharmaceuticals,  Inc.  and
Inpharzam  International,  S.A.  dated June , 1998, and the execution of same by
the  undersigned has been duly authorized by the Board of Directors of Sheffield
Pharmaceuticals, Inc. on June , 1998.

Dated this     day of       , 19  .


                                                SHEFFIELD PHARMACEUTICALS, INC.



                                                BY:____________________________
 


                                       -2-

<PAGE>
                                  CONFIDENTIAL

                                   APPENDIX F

                              REPORT RE: ALBUTEROL

                                 [TEXT OMITTED]


<PAGE>
                                  CONFIDENTIAL

                                   APPENDIX G

                            REPORT RE: BECLOMETHASONE

                                 [TEXT OMITTED]



<PAGE>

                                  CONFIDENTIAL

                                   APPENDIX H

                             CO-PROMOTION PRINCIPLES


                  The  following  principles  shall  apply  to the  terms of the
Co-promotion Rights:

1.       Co-promotion shall mean the direct promotion of Licensed Products under
         a  single  brandname  to  healthcare   professionals  and  distribution
         channels  in the United  States by a  Sheffield  salesforce  and Zambon
         salesforce.

2.       A "Profit  Contribution"  from Licensed Products sales in the U.S. will
         be  negotiated by the parties  based on promotion  efforts  measured by
         each party's  percentage of total audited details for Licensed Products
         and other relevant commercial considerations.

3.       Specific call  coverage  assignments  for each  salesforce by specialty
         and/or geography will be agreed to by the parties.

4.       There will be a minimum of [TEXT OMITTED]  field sales  representatives
         to qualify for profit sharing.

5.       The parties  will agree upon one  unified  system for  coordination  of
         adverse event reporting.

6.       The parties  agree to appoint a  Co-Marketing  Committee as part of the
         Commercialization  Plan to oversee the ongoing relationship between the
         parties regarding all co-promotion activities.




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