CELLEGY PHARMACEUTICALS INC
S-3, 1997-09-19
PHARMACEUTICAL PREPARATIONS
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   As filed with the Securities and Exchange Commission on September 19, 1997
                                                    Registration No. 333-_______
- --------------------------------------------------------------------------------
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549
                              ---------------------
                                    FORM S-3
                             REGISTRATION STATEMENT
                                      Under
                           THE SECURITIES ACT OF 1933
                              ---------------------
                          CELLEGY PHARMACEUTICALS, INC.
             (Exact name of Registrant as specified in its charter)

         California                                               82-0429727
(State or other jurisdiction of                               (I.R.S. employer
incorporation or organization)                               identification no.)
                              ---------------------

                       1065 E. Hillsdale Blvd., Suite 418
                          Foster City, California 94404
                                 (650) 524-1600
               (Address, including zip code, and telephone number,
        including area code, of Registrant's principal executive offices)
                              ---------------------

                               K. Michael Forrest
                      President and Chief Executive Officer
                          Cellegy Pharmaceuticals, Inc.
                       1065 E. Hillsdale Blvd., Suite 418
                          Foster City, California 94404
                                 (650) 524-1600
            (Name, address, including zip code, and telephone number,
                   including area code, of agent for service)
                              ---------------------

                                   Copies to:
                              C. Kevin Kelso, Esq.
                               Melissa Sayer, Esq.
                               Fenwick & West LLP
                         Two Palo Alto Square, Suite 700
                           Palo Alto, California 94306
                              ---------------------

         Approximate  date of commencement of proposed sale to the public:  From
time to time after the effective date of this Registration Statement.

         If the only securities  being registered on this Form are being offered
pursuant to dividend or interest  reinvestment plans, please check the following
box. [ ]
         If any of the  securities  being  registered  on  this  Form  are to be
offered  on a  delayed  or  continuous  basis  pursuant  to Rule 415  under  the
Securities Act of 1933,  other than  securities  offered only in connection with
dividend or interest reinvestment plans, check the following box. [X]
         If this Form is filed to register additional securities for an offering
pursuant to Rule 462(b) under the Securities Act, please check the following box
and list  the  Securities  Act  registration  statement  number  of the  earlier
effective registration statement for the same offering. [ ]
         If this  Form is a  post-effective  amendment  filed  pursuant  to Rule
462(c) under the Securities Act, check the following box and list the Securities
Act  registration   statement  number  of  the  earlier  effective  registration
statement for the same offering. [ ]
         If delivery of the  prospectus  is expected to be made pursuant to Rule
434, please check the following box. [ ]

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

<TABLE>
                                                   CALCULATION OF REGISTRATION FEE

- ------------------------------------ ------------------------ ----------------------- ------------------------ ---------------------
<CAPTION>
                                                                Proposed Maximum       Proposed Maximum
 Title of Each Class of Securities   Amount to be Registered   Offering Price per     Aggregate Offering     Amount of Registration
         to be Registered                                            Share                   Price                     Fee
- ------------------------------------ ------------------------ ----------------------- ------------------------ ---------------------
<S>                                                <C>                     <C>                <C>                           <C>     
Common Stock                                       1,974,887               $5.94(1)           11,730,829(1)                 3,555(1)
- ------------------------------------ ------------------------ ----------------------- ------------------------ ---------------------
Common Stock issuable upon
exercise of warrants                                  25,000               $5.94(2)              148,500(2)                    45(2)
- -------------------------------------------------------------------------------------------------------------- ---------------------
Total                                                                                                                   $3,600(1)(2)
- -------------------------------------------------------------------------------------------------------------- ---------------------

<FN>
(1)  Estimated  solely  for  the  purpose  of  calculating  the  amount  of  the
     registration  fee,  pursuant to Rule 457(c) under the Securities Act, based
     on the last sales price of the Common Stock on the Nasdaq  SmallCap  Market
     on September 15, 1997.
(2)  Estimated  solely  for  the  purpose  of  calculating  the  amount  of  the
     registration  fee,  pursuant to Rule 457(h) under the Securities Act, based
     on the last sales price of the Common Stock on the Nasdaq  SmallCap  Market
     on September 15, 1997.
</FN>
</TABLE>

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

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

<PAGE>


This Prospectus and the information  contained  herein are subject to completion
or  amendment.  These  securities  may not be  sold,  nor may  offers  to buy be
accepted,  prior to the time the prospectus is delivered in final form. Under no
circumstances shall this Preliminary  Prospectus  constitute an offer to sell or
the  solicitation  of an  offer  to buy nor  shall  there  be any  sale of these
securities in any  jurisdiction in which such offer,  solicitation or sale would
be unlawful prior to registration or qualification  under the securities laws of
any such jurisdiction.

                 Subject to Completion dated September 19, 1997

                                   PROSPECTUS

                        1,999,887 Shares of Common Stock
                          CELLEGY PHARMACEUTICALS, INC.

         This  prospectus  (this  "Prospectus")   covers  the  registration  for
possible  resale of shares (the  "Shares")  of Common  Stock,  no par value (the
"Common Stock"), of Cellegy  Pharmaceuticals,  Inc. ("Cellegy" or the "Company")
and  certain  warrants  (the  "Warrants")  to  purchase  Common  Stock,  held or
acquirable by certain persons  ("Shareholders")  named in this Prospectus.  (The
Shares and Warrants are referred to hereafter collectively as the "Securities".)

         This Prospectus covers 1,547,827 shares of Common Stock held by certain
Shareholders that were acquired in a private placement transaction (the "Private
Placement")  completed on July 23, 1997, and described in this  Prospectus,  see
"Selling Shareholders." Each Shareholder in the Private Placement represented to
the  Company,  in the  subscription  agreement  relating to the purchase of such
Shares,  that it was  purchasing  such Shares for investment and with no present
intention of distributing or reselling such Securities.  However, in recognition
of the fact that each such  Shareholder,  even though purchasing such Shares for
investment,  wishes to be legally  permitted  to sell the Shares  when they deem
appropriate,  the Company has filed with the Securities and Exchange  Commission
(the  "Commission") a registration  statement of which this  Prospectus  forms a
part (the "Registration Statement") with respect to the sale of such Shares from
time to time. See "Plan of Distribution." To the Company's knowledge,  as of the
date  of this  Prospectus,  no  Shareholder  has  entered  into  any  agreement,
arrangement or understanding with any particular  broker,  market maker or other
person with respect to sale of any of the Shares offered hereby.

         In  addition,  427,060 of the Shares  covered by this  Prospectus  were
acquired  by  certain   Shareholders   in  purchase   transactions   from  other
shareholders  prior to the completion of the Private Placement in July 1997. The
Shares  covered  herein  also  include  25,000  shares of Common  Stock that are
issuable  upon  exercise of Warrants to purchase  Common Stock held by a certain
Shareholder.  While the Company will receive  proceeds  from the exercise of the
Warrants, it will not receive any of the proceeds from the resale of the Shares.
See  "Selling  Shareholders"  for  information  with  respect to Shares  held or
acquirable by the Shareholders.

         The Shares covered by this Prospectus represent  approximately 26.3% of
the  Company's  currently  outstanding  Common Stock  (assuming  exercise of the
Warrant).  The Shares are being offered on a continuous  basis  pursuant to Rule
415 under the Securities  Act of 1933, as amended (the  "Securities  Act").  The
Company  will  pay  the  expenses  of  registration  estimated  at  $38,600.  No
underwriting  discounts,  commissions  or expenses are payable or  applicable in
connection  with the sale of the  Securities.  The  Common  Stock of  Cellegy is
quoted on the Nasdaq SmallCap Market under the symbol "CLGY". The Shares offered
hereby may be sold from time to time at then prevailing market prices, at prices
relating to prevailing  market prices or at negotiated  prices. On September 15,
1997 the closing  price of the Common  Stock on the Nasdaq  SmallCap  Market was
$5.94 per  share.  This  Prospectus  may be used by the  Shareholders  or by any
broker-dealer  who may  participate in sales of the Common Stock covered hereby.
In addition,  any Shares  offered hereby which qualify for sale pursuant to Rule
144 under the Securities  Act or any other  exemption may be sold under Rule 144
or an other exemption rather than pursuant to this Prospectus.

See "RISK FACTORS" commencing on page 7 for a discussion of certain factors that
should be  considered  in  connection  with an  investment  in the Common  Stock
offered hereby.

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

               The date of this prospectus is September 19, 1997.

<PAGE>


                              AVAILABLE INFORMATION

         The  Company  is  subject  to  the  informational  requirements  of the
Securities  Exchange  Act of 1934,  as amended  (the  "Exchange  Act"),  and, in
accordance therewith, files reports, proxy statements and other information with
the Securities and Exchange Commission (the "Commission").  Such reports,  proxy
statements  and other  information  filed by the  Company can be  inspected  and
copied at the public  reference  facilities  of the  Commission  located at Room
1024,  Judiciary Plaza, 450 Fifth Street, N.W.,  Washington,  D.C. 20549, and at
the Commission's  regional offices at Seven World Trade Center,  13th Floor, New
York, New York 10048; and Northwestern  Atrium Center,  500 West Madison Street,
Suite 1400, Chicago,  Illinois  60661-2511.  Copies of such material can also be
obtained  from the  Public  Reference  Section of the  Commission  at Room 1024,
Judiciary Plaza, 450 Fifth Street,  N.W.,  Washington,  D.C. 20549 at prescribed
rates.  The  Commission  also  maintains  a World  Wide  Web  site  (located  at
http://www.sec.gov)  that contains reports, proxy and information statements and
other information regarding the Company. The Company's Common Stock is listed on
the Nasdaq SmallCap Market and reports,  proxy statements and other  information
concerning  the Company  may be  inspected  at the  offices of the Nasdaq  Stock
Market, 1735 K Street, N.W., Washington, D.C. 20006-1500.

         The Company has filed with the Commission a  Registration  Statement on
Form S-3 under the  Securities  Act with respect to the Shares  offered  hereby.
This  Prospectus  does  not  contain  all of the  information  set  forth in the
Registration  Statement and the exhibits thereto.  For further  information with
respect to the Company and the Common Stock offered hereby, reference is made to
the  Registration  Statement and the exhibits  filed  therewith or  incorporated
therein by reference.  Regarding  statements  contained in this Prospectus as to
the contents of any contract or any other  document  referred to herein,  and in
each instance  reference is made to the copy of such contract or other  document
filed as an exhibit to the  Registration  Statement or  incorporated  therein by
reference,  each  such  statement  being  qualified  in  all  respects  by  such
reference.  A copy  of the  Registration  Statement  may be  inspected,  without
charge,  at the offices of the Commission in Washington,  D.C. and copies of all
or any part of the  Registration  Statement  may be  obtained  from  the  Public
Reference  Section of the Commission at Room 1024,  Judiciary  Plaza,  450 Fifth
Street, N.W., Washington, D.C. 20549, upon the payment of the fees prescribed by
the Commission.

         No dealer,  salesperson or other person has been authorized to give any
information or to make any  representation not contained in this Prospectus and,
if given or made, such information or representation  must not be relied upon as
having been authorized by the Company or any  Shareholder.  This Prospectus does
not constitute an offer to sell or a solicitation  of an offer to buy any of the
securities  offered  hereby  in any  jurisdiction  to any  person  to whom it is
unlawful to make such offer or  solicitation in such  jurisdiction.  Neither the
delivery  of this  Prospectus  nor any sale  made  hereunder  shall,  under  any
circumstances,  create any implication that the information herein is correct as
of any time  subsequent  to the date  hereof or that there has been no change in
the affairs of the Company since such date.



<PAGE>


                 INCORPORATION OF CERTAIN DOCUMENTS BY REFERENCE

         The following  documents  filed with the  Commission  are  incorporated
herein by reference:

(a)      The  Company's  annual  report on Form 10-KSB for the fiscal year ended
         December 31, 1996.

(b)      The  Company's  quarterly  report on Form  10-QSB for the three  months
         ended March 31, 1997.

(c)      The  Company's  quarterly  report on Form  10-QSB for the three  months
         ended June 30, 1997.

(d)      The Company's  Proxy  Statement for the Annual Meeting of  Shareholders
         filed with the Commission on April 21, 1997.

(e)      All other  documents  filed by the Company  pursuant to Sections 13(a),
         13(c), 14 and 15(d) of the Exchange Act following the fiscal year ended
         December  31,  1996  and  prior  to the  termination  of  the  offering
         contemplated hereby.

(f)      The  description  of  the  Company's  Common  Stock  contained  in  the
         Company's  registration statement on Form 8-A filed with the Commission
         on August 1, 1995.

         The Company hereby undertakes to provide without charge to each person,
including any  beneficial  owner,  to whom this  Prospectus  is delivered,  upon
written or oral request of such person, a copy of any and all of the information
that has been  incorporated  by reference in this  Prospectus (not including the
exhibits  to the  information  that is  incorporated  by  reference  unless such
exhibits are  specifically  incorporated by reference into the information  that
this  Prospectus  incorporates).  Requests  should be directed to Mr. A. Richard
Juelis,  Chief Financial  Officer,  1065 E. Hillsdale  Blvd.,  Suite 418, Foster
City, CA 94404; telephone number (650) 524-1600.



<PAGE>


                           FORWARD LOOKING STATEMENTS

         Certain  statements  contained in this  Prospectus,  including  without
limitation,  statements containing the words "believes,"  "estimates," "expects"
and words of similar import, constitute "forward looking statements." Such words
and expressions are intended to identify such forward  looking  statements,  but
are  not  intended  to  constitute  the  exclusive  means  of  identifying  such
statements.  Such forward  looking  statements  involve known and unknown risks,
uncertainties  and other factors that may cause the actual results,  performance
or achievements of the Company, or industry results, to be materially  different
from any future  results,  performance or  achievements  expressed or implied by
such forward looking  statements.  These risks,  uncertainties and other factors
include,  but are not limited to, those  discussed below under the heading "Risk
Factors." Given these uncertainties,  prospective investors are cautioned not to
place undue reliance on such forward looking  statements.  The Company disclaims
any obligation to update any such factors or to publicly announce the results of
any  revisions  to any of the forward  looking  statements  contained  herein to
reflect any events or developments. Investors should also review forward looking
statements  contained in the Company's  most recent Annual Report on Form 10-KSB
and subsequent quarterly reports on Form 10-QSB.


                                   THE COMPANY

         The Company was  founded in 1989 and is engaged in the  development  of
prescription   drugs  and   cosmeceutical   products  based  upon  its  patented
transdermal  and  topical  drug  delivery  technologies.   The  Company's  first
prescription dermatologic drug, GlylorinTM,  has been licensed to Glaxo Wellcome
and is nearing  completion of Phase III clinical trials,  the last testing phase
required by the Food and Drug Administration before marketing approval of a drug
in the  United  States  may be  sought.  In  addition  to  Glylorin,  Cellegy is
simultaneously  testing and developing  several  prescription  drugs including a
transdermal  testosterone gel and a line of anti-wrinkling  products that belong
to a class of marketed  compounds which the Company  believes will not require a
prescription.

         The principal  executive  offices of the Company are located at 1065 E.
Hillsdale  Blvd.,  Suite 418, Foster City, CA 94404 and its telephone  number is
(650) 524-1600.  In this  Prospectus,  the term "Cellegy" or "Company" refers to
Cellegy  Pharmaceuticals,  Inc.,  a California  corporation,  unless the context
otherwise requires.

Technology

         Cellegy's   proprietary   transdermal   and   topical   drug   delivery
technologies  have been found in preclinical  evaluations to permit the delivery
of larger or more lipophilic  drugs into the systemic  circulation and the local
tissue.  These  technologies  consist of  PERMEATE  and IRM,  which the  Company
believes will permit the non-irritating  transdermal and local delivery of drugs
and other  biopharmaceuticals that are the focus of discovery efforts by many of
the world's leading pharmaceutical and biotechnology companies.

         If clinical and  commercial  development  efforts are  successful,  the
technology  would  permit  the  delivery  of certain  drugs  that are  currently
administered by intramuscular or intravenous injection for the treatment of many
diseases,  and  would  also  allow  topical  application  of drugs  whose  local
administration  heretofore  has  been  hampered  by  irritation,   allergy,  and
inability to achieve a therapeutic dose.  Transdermal  delivery can also improve
patient  compliance  where  frequent,  painful dosing  regiments are required or
where the physical/psychological status of the patient is impaired.

         PERMEATE is a patented  technology  which  employs the use of bioactive
permeation  enhancers  to permit  controlled  passage of larger  molecule  drugs
through the skin. This technology  potentially enables  transdermal  delivery of
such drugs  without the need for  systems  which are energy  dependent,  such as
iontophoresis,  electroporation, ultrasound or laser, to drive drugs through the
skin barrier.  Cellegy's delivery technology is intended to be used in a variety
of topical dosage forms such as gels,  creams, and sprays, and is not limited to
the more traditional occlusive patches.

         IRM (Inflammatory  Response  Modulation)  technology employs the use of
proprietary  substances  intended to prevent or reduce inflammation and allergic
reactions caused by contact with irritating or allergenic substances,  including
drugs,  certain  excipients in skin care products,  occupational  substances and
natural allergens.

Product Development

         Cellegy's product  development  efforts are focused in three areas: (i)
development  of  transdermal  delivery  systems  for  new  drugs  discovered  by
pharmaceutical  and biotechnology  companies;  (ii) utilization of the Company's
technologies to



<PAGE>


improve currently marketed pharmaceutical products,  providing them with greater
competitive  advantages,  market expansion possibilities and longer patent life;
and (iii) development of improved and effective  non-prescription  cosmeceutical
products  which  address  the  skin  care  needs  of the  increasing  aging  and
middle-aged populations.

         The Company's most advanced  pharmaceutical product is Glylorin.  Based
on clinical studies to date, Glylorin may inhibit the abnormal signs, as well as
other symptoms, of ichthyosis, a lifelong,  debilitating skin condition which in
all of its forms afflicts an estimated one million persons in the United States,
and for which there is currently no  satisfactory  treatment.  After  conducting
product  development  efforts through early Phase III clinical  trials,  Cellegy
licensed  Glylorin to Glaxo Wellcome Inc. in November 1996. See "--Corporate and
Research Alliances." Glaxo Wellcome is one of the world's largest pharmaceutical
companies  and a leader in the field of  dermatology.  The  product  is  nearing
completion of Phase III trials in the United  States.  Glylorin has been awarded
Orphan Drug  status and  Cellegy  has  received an Orphan Drug grant of $400,000
from the Food and Drug Administration to supplement certain clinical development
costs.

         Another   pharmaceutical   product  under  development  is  transdermal
testosterone gel. Based on studies to date, the Company believes its proprietary
gel formulation may be capable of providing  therapeutic  levels of testosterone
through  a  once-a-day  topical  application  to  a  small  area  of  the  body.
Furthermore,  Cellegy's  testosterone  gel is  expected to have no risk of local
irritation,   which  often   accompanies   use  of  traditional   drug  delivery
technologies,  such as patches and iontophoresis.  Cellegy is also utilizing its
drug delivery  technologies to develop other products  intended to address unmet
needs in prescription pharmaceutical markets.

         The Company is developing a line of  cosmeceutical  products  utilizing
Cellegy's IRM technology  which,  based on studies  conducted to date, appear to
help protect the skin against  physical,  environmental  or chemical insults and
has the potential to reverse  inflammation,  irritation  and allergic  reactions
caused by many active substances which are applied to the skin.

         The Company's lead  cosmeceuticals  include products under  development
designed to mitigate photoaging and reverse signs of skin wrinkling and dryness.
Based on  testing to date,  these  products  are  expected  to  produce  greater
improvements  to the skin's  appearance  with less  irritation and other adverse
reactions  than many  current  products.  This product line may also address the
skin barrier  abnormalities  unique to various  ages,  sexes and races.  Cellegy
commenced  clinical testing of these products during the second quarter of 1997,
and expects to complete clinical trials during 1998.

         Other  targeted  non-prescription  cosmeceutical  products  include the
alternative  therapies  for  corticosteroid  responsive  diseases,  inflammatory
diseases,  problem skin,  and skin barrier  repair  following  laser or chemical
peeling  therapy.  If  successfully  developed,  these products will be marketed
primarily to  professional  groups  including  dermatologists,  plastic/cosmetic
surgeons  and  medical  aestheticians.  The  Company  is seeking  partners  with
franchises in and access to these target markets and professional groups.

Corporate and Research Alliances

         In  November  1996,   Cellegy  licensed  its  Glylorin   treatment  for
ichthyosis to Glaxo Wellcome Inc. Under the terms of the agreement  Cellegy will
receive upfront and milestone payments from Glaxo Wellcome,  assuming successful
completion  of the  various  milestones,  as  well  as a  royalty  on net  sales
following  regulatory  approval.   In  addition,   Glaxo  Wellcome  will  assume
responsibility  and the associated  costs for future  development  and worldwide
commercialization   of  Glylorin  for  ichthyosis  and  other  severe  dry  skin
conditions.

         Cellegy has entered into license  agreements  for patented skin barrier
repair and drug delivery  technologies and methods  discovered at the University
of California at San Francisco School of Medicine.

         Cellegy is currently pursuing additional corporate alliances with major
pharmaceutical  companies and may, where  appropriate,  explore  acquisitions to
secure  marketing  distribution  channels  and/or to augment the Company's  core
technologies.



<PAGE>


                                  RISK FACTORS

         Investors should consider carefully the following factors,  in addition
to the other  information  contained in this Prospectus,  before  purchasing the
shares of Common Stock offered hereby.

         Early Stage of Product  Development.  Cellegy has not yet completed the
development of any products or sought  regulatory  approval for the marketing of
products and, accordingly, has not begun to market or generate revenues from the
commercialization of products.  Development of products will require significant
additional research and development,  including process  development,  extensive
clinical testing and market research.  All of the Company's product  development
efforts are based upon  technologies  and  therapeutic  approaches that have not
been  widely  tested  or used.  The  Company  is not  discovering  new  chemical
entities,  rather,  it  is  using  known  commercially  available  compounds  in
conjunction with novel therapeutic  formulations and strategies.  Moreover,  the
Company's  beliefs  regarding the therapeutic  and commercial  potential for its
potential   products,   including  without  limitation  its  drug  delivery  and
cosmeceutical  products,  are based on preliminary assays or studies,  and later
studies may not support the Company's current beliefs.  In addition,  results of
the Company's  tests and studies have not been published in medical  journals or
reviewed by independent third parties (other than the third parties that in some
instances  conducted  the  studies on behalf of the  Company)  due to  patenting
strategies,  and as a result  have  not been  subjected  to the same  degree  of
scrutiny  as  results  that  have  been  published  or  subjected  to  review by
independent  parties. To the Company's  knowledge,  no company has yet completed
human  clinical  trials  for the  regulatory  approval  process,  or  undertaken
successfully commercial manufacture, of products that are based on the Company's
proprietary  technologies,  and it is extremely  difficult to predict whether or
when  the  Company's  products  will  meet  with  regulatory  approval,  can  be
manufactured successfully, or will be accepted in the marketplace.

         As a result, the Company's  potential products are subject to the risks
of failure  inherent in the  development of products based on new  technologies.
These risks include the possibilities that the Company's therapeutic  approaches
will not be  successful;  that the results from future  clinical  trials may not
correlate with any safety or  effectiveness  results from prior clinical studies
conducted by the Company or others;  that some or all of the Company's potential
products will not be successfully  developed or will not be found to be safe and
effective by the United States Food and Drug  Administration,  or otherwise will
fail to meet applicable  regulatory  standards or receive  necessary  regulatory
clearances;  that the  products,  if safe and  effective,  will be  difficult to
manufacture in commercial quantities at reasonable costs or will be uneconomical
to market;  that  proprietary  rights of third parties will preclude the Company
from commercializing  such products;  or that third parties will market superior
or equivalent products. In addition,  the failure of the Company's most advanced
clinical compound,  Glylorin, to successfully complete its current Phase III and
future clinical testing,  including  toxicology  studies,  could have a material
adverse effect on the Company.  There can be no assurance the Company's research
and development activities will result in any commercially viable products.

         The timetable for the completion of the various  milestone  events that
must occur in order for the  Company's  products to be approved  and marketed is
very   uncertain.   Pharmaceutical   research  and   development  is  frequently
characterized by scientific and regulatory delays and disappointments.  Although
the Company may set target dates for the completion of various milestone events,
the  uncertainties  and risks in the Company's  product  development and testing
efforts  mean that  decisions  on  whether to invest in the  Company  should not
assume that the targets will be met.

         The  evaluation  of animal and human  clinical  test  results  involves
making judgments about data and other information that often are not conclusive.
Later testing may show those judgments to have been erroneous.  For example, the
Company's beliefs regarding the potential  comparative  therapeutic  benefits of
its products compared to currently  marketed  products may be erroneous,  or the
FDA may not  agree  with  the  Company's  conclusions  regarding  such  matters.
Furthermore,  due to the  independent and blind nature of certain human clinical
testing,  there will be extended  periods  during the testing  process  when the
Company will have only limited, or no, access to information about the status or
results of the tests.  Other  pharmaceutical  companies have believed that their
products performed satisfactorily in early tests, only to find their performance
in later  tests,  including  Phase III  clinical  trials,  to be  inadequate  or
unsatisfactory,  or that FDA  Advisory  Committees  have  declined to  recommend
approval of the drugs, or that the FDA itself refused approval,  with the result
that such companies' stock prices have fallen precipitously.

         Competition and Technological  Change. The  pharmaceutical  industry is
subject  to rapid  and  significant  technological  change.  Competitors  of the
Company in the United States and abroad are numerous and include,  among others,
major  pharmaceutical,   chemical,   consumer,   and  biotechnology   companies,
specialized firms, universities and other research institutions. There can be no
assurance  that  the  Company's  competitors  will  not  succeed  in  developing
technologies  and  products  that are more  effective  than any  which are being
developed  by the  Company or that would  render the  Company's



<PAGE>


technology and potential  products  obsolete and  noncompetitive.  Many of these
competitors have  substantially  greater  financial and technical  resources and
production and marketing capabilities than the Company. In addition, many of the
Company's  competitors have significantly greater experience than the Company in
preclinical testing and human clinical trials of pharmaceutical  products and in
obtaining FDA and other regulatory approvals of products for use in health care.
There can be no assurance that the Company's  products under development will be
able  to  compete   successfully   with  existing  products  or  products  under
development by other companies, universities and other institutions or that they
will obtain regulatory approval in the United States or elsewhere.

         Accumulated  Deficit;  Anticipated Gains or Losses.  The Company had an
accumulated  deficit of $16.7 million at June 30, 1997.  The Company  expects to
incur net losses for at least the next few years,  the amount of which is highly
uncertain.  There  can be no  assurance  that the  Company  will ever be able to
generate product revenues or achieve or sustain profitability.  The Company will
be required to conduct significant research, development, testing and regulatory
compliance  activities that,  together with projected general and administrative
expenses,  are expected to result in significant  operating  losses for at least
the next few years. The Company's ability to achieve  profitability depends upon
its ability to successfully complete,  either alone or with others,  development
of its potential products, successfully conduct clinical trials, obtain required
regulatory approvals,  find appropriate third party manufacturers and market its
products or enter into license  agreements on acceptable terms. In the event the
Company enters into any future license  agreements,  such license agreements may
adversely affect the Company's profit margins on its products.

         Future Capital Needs;  Uncertainty of Additional Funding. The Company's
operations to date have consumed substantial amounts of cash. The Company has no
current source of ongoing  revenues or capital beyond existing cash. In order to
complete  the  research  and  development  and  other  activities  necessary  to
commercialize its products, additional financing will be required. The Company's
capital  requirements  depend on numerous factors,  including without limitation
the  progress  of  its  research  and  development  programs,  the  progress  of
preclinical  and  clinical  testing,  the time and costs  involved in  obtaining
regulatory approvals, the costs of filing, prosecuting,  defending and enforcing
any  patent   claims  and  other   intellectual   property   rights,   competing
technological  and  market  developments,  changes  in  the  Company's  existing
research  relationships,  the ability of the Company to establish  collaborative
arrangements,  the development of commercialization activities and arrangements,
and the purchase of capital equipment.

         In April 1996, the Company  completed a private placement of 750 shares
of Series A Preferred  Stock  resulting  in net proceeds of  approximately  $6.8
million.  In July 1997, the Company raised  additional $3.8 million in a private
placement  which are the subject of the shares  registered  herein.  The Company
believes  that  its  existing   resources  will  satisfy  its  anticipated  cash
requirements  through at least  December  31,  1998,  based  upon the  Company's
current plan. However,  the Company will require substantial  additional capital
to  fund  its  operations,   continue  research  and  development  programs  and
preclinical  and  clinical  testing of its  potential  products  and conduct its
business.  The Company may seek any required  additional  funding through equity
offerings, private financings and collaborative or other arrangements with third
parties.  There can be no assurance that  additional  funds will be available on
acceptable  terms. If additional funds are raised by issuing equity  securities,
further  substantial  dilution to existing  shareholders may result. If adequate
funds are not  available,  the Company  may be required to delay,  scale back or
eliminate  one or more of its research and  development  programs,  or to obtain
funds through entering into arrangements with third parties that may require the
Company  to  relinquish  rights to  certain  of its  technologies  or  potential
products that the Company would not otherwise relinquish.

         Limits on Secondary  Trading;  Liquidity of Trading  Market.  Under the
blue sky laws of most  states,  public  sales of Common  Stock and the  publicly
traded class of warrants  issued in the Company's  initial public  offering (the
"IPO  Warrants") by persons other than the Company in "non-issuer  transactions"
must either be qualified  under  applicable  blue sky laws,  or exempt from such
qualification  requirements.  Blue sky authorities in California or other states
may impose other  restrictions  on the secondary  trading of Common Stock or IPO
Warrants  in  those  states.  Certain  additional   restrictions  may  exist  in
California  with respect to secondary  trading of certain shares of Common Stock
issued or issuable to certain  investors,  although  these  restrictions  do not
apply to any of the shares sold to the public in the  Company's  initial  public
offering. Moreover, in many states, secondary trading of the Common Stock or IPO
Warrants is  permitted  only by virtue of an  exemption  so long as  information
about the Company is published in a  recognized  manual  published by Standard &
Poor's  Corporation.  As a result of these or other  restrictions  that might be
imposed,  shareholders may be restricted or prohibited from selling Common Stock
or IPO Warrants in particular  states as a result of  applicable  blue sky laws.
These  restrictions  may have the effect of reducing the liquidity of the Common
Stock or IPO Warrants and could adversely  affect the market price of the Common
Stock or IPO Warrants.



<PAGE>
         The Common Stock and the IPO Warrants are listed on the Nasdaq SmallCap
Market.  If the Company should be unable to maintain the standards for continued
quotation on the Nasdaq SmallCap  Market,  the Common Stock and the IPO Warrants
could be subject to removal from the Nasdaq SmallCap Market. Trading, if any, in
the  Common  Stock  and  the  IPO  Warrants  would  then  be  conducted  in  the
over-the-counter   market  on  an  electronic  bulletin  board  established  for
securities that do not meet the Nasdaq  SmallCap Market listing  requirements or
in what are commonly  referred to as the "pink sheets." As a result, an investor
would find it more difficult to dispose of, or to obtain accurate  quotations as
to the price of, the  Company's  securities.  In addition,  depending on several
factors  including the future  market price of the Common  Stock,  the Company's
securities could become subject to the so-called "penny stock" rules that impose
additional sales practice and market making  requirements on broker-dealers  who
sell and/or make a market in such securities,  which could affect the ability or
willingness  of  broker-dealers  to sell and/or  make a market in the  Company's
securities  and the ability of purchasers  of the  Company's  securities to sell
their securities in the secondary market.

         The National  Securities  Market's  Improvement  Act of 1996 ("NSMIA"),
among other  things,  prohibits  states  from  preventing  secondary  trading of
securities  such as the Common Stock and IPO Warrants in  transactions  that are
exempt  from  federal  registration  requirements  under  Section  4(1)  of  the
Securities  Act of 1933, as amended.  Section 4(1) of the Securities Act exempts
from federal  registration  requirements  transactions  by persons other than an
issuer,  underwriter or dealer,  as those terms are defined in a Securities Act.
The preemptive  effect of NSMIA on regulation of secondary trading in California
and other states has not been definitively addressed by the courts or applicable
administrative  agencies however, and thus some uncertainty may exist concerning
the  restrictions  that states may impose upon  secondary  trading of the Common
Stock and IPO Warrants.

         Government  Regulation and Product  Approvals.  The research,  testing,
manufacture, labeling, distribution,  marketing and advertising of products such
as the Company's  products and its ongoing  research and development  activities
are subject to extensive  regulation by governmental  regulatory  authorities in
the United States and other  countries.  The rigorous  preclinical  and clinical
testing  requirements  and regulatory  approval process of the FDA in the United
States and of certain foreign regulatory  authorities can take five to ten years
or more and require the  expenditure of substantial  resources.  There can be no
assurance  that the Company will be able to obtain the  necessary  approvals for
clinical  testing  or  for  the  marketing  of  products.  Moreover,  additional
government regulations may be established that could prevent or delay regulatory
approval of the Company's  products.  Delays in obtaining  regulatory  approvals
could have a material adverse effect on the Company. Even if regulatory approval
of a product is granted,  such approval may include  significant  limitations on
the  indicated  uses of the product or the manner in which or  conditions  under
which the product may be marketed.  For example,  even if the Company  seeks FDA
approval of a cosmeceutical product for non-prescription consumer sales, the FDA
could instead require that the product be distributed by means of a prescription
before  considering  approval for  distribution as a  non-prescription  product.
Prescription only approval, which the Company believes is common where a company
seeks approval for a product  involving a new compound or a compound  previously
approved  for other  uses,  could  delay for  several  years,  or  indefinitely,
distribution  through the consumer  (non-prescription)  channel of the Company's
consumer products which are subject to premarket review and approval by the FDA.
Moreover,  failure to comply  with  regulatory  requirements  could  subject the
Company to  regulatory  or  judicial  enforcement  actions,  including,  but not
limited to, product recalls or seizures,  injunctions, civil penalties, criminal
prosecution,  refusals  to approve  new  products  and  withdrawal  of  existing
approvals, as well as potentially enhanced product liability exposure.  Sales of
the Company's  products  outside the United States will be subject to regulatory
requirements   governing   clinical   trials  and  marketing   approval.   These
requirements vary widely from country to country and could delay introduction of
the Company's products in those countries.

         Patents and Proprietary  Technology.  The Company's success depends, in
part, on its ability to obtain patent  protection  for its products and methods,
both in the United  States  and in other  countries.  Several  of the  Company's
products  are based on  existing  compounds  with a history of use in humans but
which  are being  developed  by the  Company  for new  therapeutic  use for skin
diseases  unrelated  to the  systemic  diseases  for  which the  compounds  were
previously approved.  The Company cannot obtain composition patent claims on all
formulations  that  include  these  compounds,  and will instead need to rely on
patent  claims,  if  any,  directed  to use of the  compound  to  treat  certain
conditions. The Company will not be able to prevent a competitor from using that
formulation or compound for a different purpose.  No assurance can be given that
any additional patents will be issued to the Company, that the protection of any
patents that may be issued in the future will be significant, or that current or
future  patents  will be held  valid  if  subsequently  challenged.  There  is a
substantial  backlog  of patent  applications  at the United  States  Patent and
Trademark Office ("USPTO").

         The patent  position of  companies  engaged in  businesses  such as the
Company's business generally is uncertain and involves complex legal and factual
questions.  Further,  issued  patents  can later be held  invalid  by the patent
office  issuing  the patent or by a court.  There can be no  assurance  that any
patent applications  relating to the Company's products or methods

<PAGE>


will issue as patents,  or, if issued,  that the patents will not be challenged,
invalidated,  or circumvented or that the rights granted thereunder will provide
a  competitive  advantage  to the  Company.  In  addition,  other  entities  may
currently  have,  or may  obtain in the  future,  legally  blocking  proprietary
rights,  including  patent  rights,  in one or more  products  or methods  under
development  or  consideration  by the  Company.  These  rights may  prevent the
Company from commercializing  technology, or may require the Company to obtain a
license  from the entity to practice the  technology.  There can be no assurance
that the Company will be able to obtain any such  licenses  that may be required
on commercially  reasonable terms, if at all, or that the patents underlying any
such  licenses  will be  valid or  enforceable.  Moreover,  the laws of  certain
foreign countries do not protect  intellectual  property rights relating to U.S.
patents as extensively  as those rights are protected in the United  States.  As
with other companies in the pharmaceutical  industry,  the Company is subject to
the risk that  persons  located in such  countries  will engage in  development,
marketing or sales  activities  of products  that would  infringe the  Company's
patent rights if such activities were in the United States.

         The  agreements  with UCSF  pursuant to which the Company has exclusive
license rights to certain  barrier repair and drug delivery  technology  contain
certain development and performance milestones which the Company must satisfy in
order to retain  such  rights.  Certain  milestone  dates have  passed  with the
development  or  performance  milestone  not being  satisfied.  The  Company  is
currently in discussions  with the  University  concerning  negotiations  of new
milestones and milestone dates, but no agreement has yet been reached. While the
Company currently believes it will be able to negotiate satisfactory extensions,
a loss of rights to the drug delivery  technology  could have a material adverse
effect on the Company.

         Limited Staff; Third Party Relationship.  In view of the early stage of
the  Company  and  its  research  and  development  programs,  the  Company  has
restricted   hiring  to  research  and   development   scientists  and  a  small
administrative staff and has made limited or no investment in marketing, product
sales  and  regulatory  compliance  resources.   The  Company  has  certain  key
collaborations  relating to the research,  development and  commercialization of
its  potential  products.  Therefore,  the  Company  may be  dependent  upon the
subsequent    success   of   these   outside   parties   in   performing   their
responsibilities.   In   addition,   the  Company  may  enter  into   additional
arrangements  with corporate and academic  collaborators and others to research,
develop or commercialize potential products.  There can be no assurance that the
Company will be able to  establish  any such  arrangements  or that they will be
successful. Failure to enter into any such arrangements that in the future might
be necessary could have a material adverse effect on the Company's business.

         Risk  of  Product  Liability;   Limited  Product  Liability  Insurance;
Environmental  Matters.  The  testing,  marketing  and sale of human health care
products entails an inherent risk of allegations of product liability, and there
can be no  assurance  that  substantial  product  liability  claims  will not be
asserted  against  the  Company.  The Company has  obtained  limited  amounts of
insurance  relating to its clinical  trials.  There can be no assurance that the
Company will be able to obtain or maintain insurance on acceptable terms for its
clinical and commercial  activities or that any insurance  obtained will provide
adequate  protection  against potential  liabilities.  Moreover,  the Company is
subject to  federal,  state and local laws and  regulations  governing  the use,
generation, manufacture, storage, handling and disposal of certain materials and
wastes.  The Company's  research and development  processes involve the limited,
controlled use of hazardous and radioactive materials.  The Company believes its
safety  procedures for handling and disposing of such materials  comply with the
standards  prescribed by such laws and  regulations,  but the risk of accidental
contamination  or  injury  to the  Company's  employees  or  others  from  these
materials  cannot be eliminated.  In the event of such an accident,  the Company
could be held liable for any damages that result,  and any such liability  could
exceed the  resources  of the Company.  Although  the Company  believes it is in
compliance  in all material  respects  with  applicable  environmental  laws and
regulations and currently does not expect to make material capital  expenditures
for environmental control facilities in the near-term, there can be no assurance
that the Company will not be required to incur  significant costs to comply with
environmental  laws and  regulations  in the  future,  or that  the  operations,
business or assets of the Company may not be  materially  adversely  affected by
current or future environmental laws or regulations.

         Dependence  Upon Key  Employees  and  Consultants.  The  success of the
Company is dependent upon the efforts of its senior  management team,  including
Dr. Carl R. Thornfeldt,  Chairman of the Board of Directors and Medical Director
of the Company, and K. Michael Forrest,  Chief Executive Officer of the Company.
A change in the association of these individuals or other officers and directors
of the  Company  could  adversely  affect the  Company if  suitable  replacement
personnel  could not be  employed.  The success of the Company also depends upon
its ability to continue to attract and retain qualified scientific and technical
personnel.  There is intense competition for qualified personnel in the areas of
the Company's activities, and there can be no assurance that the Company will be
able to continue to attract and retain the qualified personnel necessary for the
development or expansion of its business.



<PAGE>


         Anti-Takeover  Provisions.  Certain provisions of the Company's Amended
and  Restated  Articles  of  Incorporation,  as well as the  California  General
Corporation Law, could  discourage a third party from attempting to acquire,  or
make it more  difficult  for a third  party to  acquire,  control of the Company
without approval of the Company's Board of Directors. Such provisions could also
limit the price that certain investors might be willing to pay in the future for
shares  of the  Common  Stock.  Certain  of such  provisions  allow the Board of
Directors to authorize the issuance of preferred  stock with rights  superior to
those of the Common  Stock.  The Company is also  subject to the  provisions  of
Section 1203 of the  California  General  Corporation  Law which requires that a
fairness  opinion be provided to the Company's  shareholders  in connection with
their   consideration  of  any  proposed   "interested   party"   reorganization
transaction.

         Volatility  of Stock  Price.  The  stock  market  has from time to time
experienced  significant price and volume  fluctuations that may be unrelated to
the operating performance of particular companies. In addition, the market price
of the  Common  Stock  and the IPO  Warrants,  like  the  stock  prices  of many
publicly-traded pharmaceutical, chemical, consumer, and biotechnology companies,
may prove to be highly volatile.  Announcements of technological  innovations or
new  commercial  products by the  Company or its  competitors,  developments  or
disputes concerning patent or proprietary rights,  publicity regarding actual or
potential  medical results relating to products under development by the Company
or its  competitors,  regulatory  developments  in both the  United  States  and
foreign countries,  public concern as to the safety of pharmaceutical  products,
sales of a large  number of shares of Common  Stock in the market,  and economic
and  other  external  factors,  as  well  as  period-to-period  fluctuations  in
financial  results,  among other factors,  may have a significant  impact on the
market price of the Common Stock and the IPO Warrants.



<PAGE>

                              SELLING SHAREHOLDERS

      The Shareholders  consist of (i) the investors who purchased Shares in the
Private  Placement  (the  "Investors"),  some of whom also  purchased  Shares in
purchase  transactions from other  shareholders  completed in July 1997 and (ii)
Charles S.  Aker,  who holds  warrants  to  purchase  Common  Stock (the  "Other
Shareholder").

      The  Registration  Statement of which this  Prospectus  is a part is being
filed,  and the  Shares  offered  hereby  that  were  purchased  in the  Private
Placement,  are included herein, pursuant to registration rights included in the
common stock purchase  agreement  associated with the Private Placement dated as
of July 23,  1997 by and among the  Company and the  Investors  (the  "Placement
Agreement"),  and  pursuant  to  registration  rights  granted  to Mr.  Aker  in
connection with his acquisition of the warrant  described below  (together,  the
"Registration Rights").

      The  Shareholders  identified in the table below as  "Investors"  acquired
1,547,827 shares of Common Stock in the Private Placement pursuant to Securities
Subscription   Agreements   dated  as  of  July  23,  1997  (the   "Subscription
Agreements").  The  Investors  include  K.  Michael  Forrest,  who has  been the
Company's  President and Chief  Executive  Officer and a director since December
1996. Each  Shareholder in the Private  Placement  represented to the Company in
the Subscription Agreement that it was purchasing such Shares for investment and
with no present intention of distributing or reselling such securities. However,
in recognition of the fact that each such  Shareholder,  even though  purchasing
such Shares for  investment,  wishes to be legally  permitted to sell the Shares
when it deems appropriate, the Company has filed the Registration Statement with
the Commission with respect to the sale of such Shares from time to time. To the
Company's  knowledge,  as of the date of this  Prospectus,  no  Shareholder  has
entered into any  agreement,  arrangement or  understanding  with any particular
broker,  market  maker or other person with respect to sale of any of the Shares
offered hereby.

      In  addition,  427,060  shares were  acquired by certain  Shareholders  in
purchase  transactions  from other  shareholders  prior to the completion of the
Private  Placement  in July  1997.  Also in July  1997,  common  stock  purchase
warrants  were issued to Charles S. Aker, an investor  relations  advisor to the
Company,  to acquire a total of 25,000 shares at an exercise  price of $4.00 per
share, subject to certain terms and conditions relating to his performance as an
advisor to the Company.

<TABLE>
         The  following   table  and   accompanying   footnotes   identify  each
Shareholder  based upon  information  provided to the  Company,  set forth as of
September  15,  1997,  with  respect  to  the  Shares  beneficially  held  by or
acquirable  within 60 days of the date of the  information in the table by, each
Shareholder  and  the  shares  of  Common  Stock   beneficially   owned  by  the
Shareholders  which are not  covered  by this  Prospectus.  Except as  described
above, based on information  supplied to the Company, no Shareholder has had any
position, office or other material relationship with the Company within the past
three years.

<CAPTION>
                                       Shares Beneficially Owned        Number of           Shares Beneficially
                                           Prior to Offering          Shares Being         Owned After Offering
Name                                    Number          Percent          Offered          Number          Percent
- ----                                    ------          -------          -------          ------          -------
<S>                                    <C>                <C>           <C>                 <C>             <C>
Investors

Four Partners                          1,053,500          13.9          1,053,500                0           *
K. Michael Forrest                       425,827          5.6             347,827           78,000          1.0
Biotechnology Value Fund, L.P.           313,560          4.1             313,560                0           *
Biotechnology Value Fund, Ltd            160,000          2.1             160,000                0           *
Gary William Ross Trust                   50,000           *               50,000                0           *
Curran Partners, L.P.                     25,000           *               25,000                0           *
John Curran                               25,000           *               25,000                0           *

Other Shareholder

Charles S. Aker                           25,000           *               25,000                0           *

<FN>
* Less than 1%.
</FN>
</TABLE>



<PAGE>


                              PLAN OF DISTRIBUTION

         The  Registration  Statement of which this Prospectus  forms a part has
been filed pursuant to the Registration Rights. To the Company's  knowledge,  as
of the date hereof,  no Shareholder has entered into any agreement,  arrangement
or understanding  with any particular broker or market maker with respect to the
Shares  offered  hereby,  nor does the Company  know the  identity of any of the
brokers or market makers that any Shareholder may utilize in connection with the
sale of any Shares.  The Shares covered hereby may be offered and sold from time
to time by the  Shareholders.  The  Shareholders  will act  independently of the
Company in making decisions concerning sales or other disposition of any Shares,
and will act  independently  of the Company in making  decisions with respect to
the timing,  manner and size of each sale.  Such sales may be made on the Nasdaq
SmallCap  Market or  otherwise,  at prices  and on terms then  prevailing  or at
prices  related to the then market  price,  or in  negotiated  transactions.  In
addition,  any Shares offered hereby which qualify for sale pursuant to Rule 144
under the Securities  Act of 1933 or any other  exemption may be sold under Rule
144 or an other exemption rather than pursuant to this Prospectus.

         The Shares may be sold by one or more of the following  methods:  (a) a
block trade in which the  broker-dealer  engaged by the Shareholder will attempt
to sell the shares as agent but may  position  and resell a portion of the block
as principal to facilitate the  transaction;  (b) through  privately  negotiated
transactions; (c) purchases by the broker-dealer as principal and resale by such
broker or dealer for its account pursuant to this  Prospectus;  and (d) ordinary
brokerage transactions and transactions in which the broker solicits purchasers.
To the Company's  knowledge,  the Shareholders  have not, as of the date hereof,
entered into any arrangement with a broker-dealer for the sale of shares through
a block trade,  special offering,  or secondary  distribution of a purchase by a
broker-dealer.  In effecting sales,  broker-dealers  engaged by the Shareholders
may arrange for other broker-dealers to participate. Broker-dealers will receive
commissions or discounts from the Shareholders in amounts to be negotiated.

         In offering their Shares,  the Shareholders and any  broker-dealers who
execute sales for the Shareholders may be deemed to be "underwriters" within the
meaning of the  Securities  Act in connection  with such sales,  and any profits
realized by the Shareholders and the compensation of such  broker-dealer  may be
deemed to be underwriting discounts and commissions.

         The  Shareholders  have advised the Company  that,  during such time as
they may be engaged in a  distribution  of the shares of Common  Stock  included
herein, they will comply with the applicable provisions under Regulation M under
the  Securities  Exchange  Act of 1934,  as  amended  ("Regulation  M") and,  in
connection  therewith,  each of the Shareholders has agreed not to engage in any
stabilization  activity in connection  with any  securities  of the Company,  to
furnish copies of this Prospectus to each broker-dealer through which the shares
of Common Stock included  herein may be offered,  and not to bid for or purchase
any  securities  of the Company or attempt to induce any person to purchase  any
securities of the Company  except as permitted  under  Regulation M. Each of the
Shareholders  has also agreed to inform the Company and  broker-dealers  through
whom  sales  may be made  hereunder  when  the  distribution  of the  shares  is
completed.

         Rule  102  and  103  under  Regulation  M  prohibit  participants  in a
distribution  from  bidding  for or  purchasing  for an  account  in  which  the
participant  has a  beneficial  interest,  any of the  securities  that  are the
subject  of the  distribution.  Rule 104 under  Regulation  M  governs  bids and
purchases  made to  stabilize  the  price of a  security  in  connection  with a
distribution of the security.

         This offering will  terminate as to each  Shareholder on the earlier of
(a) the date on which such  Shareholder's  shares may be resold  without  volume
restrictions  under the  Securities  Act;  or (b) the date on which  all  Shares
offered  hereby have been sold by the  Shareholders.  There can be no  assurance
that any of the Shareholders  will sell any or all of the shares of Common Stock
offered hereby.

         Pursuant to the registration rights granted in the Placement Agreement,
the Investors have agreed to sell Shares constituting  "Registrable  Securities"
pursuant to this Prospectus only during a "Permitted  Window." As defined in the
Purchase  Agreement,  the term "Registrable  Securities"  includes,  among other
shares, (i) all of the Shares purchased in the Private  Placement,  and (ii) any
other shares of Common Stock owned,  at the time the  Registration  Statement is
filed,  by an Investor that  reasonably may be deemed to be an  "affiliate"  (as
defined in Rule 144) of the Company.

         A  "Permitted  Window"  is a period  of 30  consecutive  calendar  days
commencing upon delivery to the Investor of the Company's  written  notification
to the Investor in response to a Notice of Resale that the Prospectus  contained
in the  Registration  Statement  is  available  for resale.  In order to cause a
Permitted Window to commence,  an Investor must first give



<PAGE>


written  notice to the Company of its present  intention  to sell part or all of
the Registrable Securities pursuant to such registration (a "Notice of Resale").
Upon receipt of such Notice of Resale,  the Company will give written  notice to
the  Investors  as soon as  practicable,  but in no event  not more  than  three
business days after such receipt, that (A) the Permitted Window will commence on
the date such notice is received by the  Investor,  (B) it is necessary  for the
Company to  supplement  the  Prospectus or make an  appropriate  filing with the
Commission so as to cause the Prospectus to become  current  (unless the Company
exercises its deferral  rights as provided in the Placement  Agreement),  or (C)
the  Company is  required  under the  Securities  Act to amend the  Registration
Statement  in order to cause the  Prospectus  to be current  (unless the Company
exercises its deferral  rights as provided in the Placement  Agreement).  If the
Company  determines that a supplement to the Prospectus,  the filing of a report
pursuant to the Exchange Act or an  amendment to the  Registration  Statement is
necessary,  it will take such actions as soon as reasonably practicable (subject
to certain  exceptions),  and the Company will notify the Investor of the filing
of such supplement,  report or amendment,  and, in the case of an amendment, the
effectiveness  thereof,  and the  Permitted  Window  will then  commence.  Under
certain  circumstances once in any twelve month period, the Company is permitted
to  postpone  the  commencement  of a  Permitted  Window for up to 60 days after
receipt of a Notice of Resale.  The Company may also defer the  commencement  of
the  Permitted  Window for up to 180 days if so requested by an  underwriter  in
connection with an underwritten  offering of the Company's securities so long as
any selling shareholders in such underwritten  offering are subject to a lock-up
agreement  of the same  duration.  The  Company  is also  permitted  in  certain
circumstances  and upon notice to the  Investors  to suspend a Permitted  Window
after it has opened for up to 60 days (and fewer days in certain circumstances).


                                  LEGAL MATTERS

         The  validity  of the  issuance of the shares of Common  Stock  offered
hereby will be passed upon for the Company by Fenwick & West LLP,  Two Palo Alto
Square, Suite 700, Palo Alto, California 94306.


                                     EXPERTS

         The financial statements of Cellegy Pharmaceuticals,  Inc. appearing in
Cellegy  Pharmaceuticals,  Inc.'s Annual Report (Form 10-KSB) for the year ended
December 31, 1996, have been audited by Ernst & Young LLP, independent auditors,
as set  forth in their  report  thereon  included  and  incorporated  herein  by
reference.  Such financial  statements are  incorporated  herein by reference in
reliance  upon such report  given upon the  authority of such firm as experts in
accounting and auditing.



<PAGE>


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



         No dealer,  salesperson or other person has been authorized to give any
information or to make any  representation not contained in this Prospectus and,
if given or made, such information or representation  must not be relied upon as
having been  authorized by the company.  This  Prospectus does not constitute an
offer to sell or a solicitation of an offer to buy any of the securities offered
hereby in any  jurisdiction  to any person to whom it is  unlawful  to make such
offer  or  solicitation  in such  jurisdiction.  Neither  the  delivery  of this
Prospectus nor any sale made hereunder shall,  under any  circumstances,  create
any implication that the information herein is correct as of any time subsequent
to the date  hereof  or that  there has been no  change  in the  affairs  of the
Company since such date.

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


                                TABLE OF CONTENTS

                                                                Page
                                                                ----
Available Information                                            3
Incorporation of Certain Documents by
   Reference                                                     4
Forward Looking Statements                                       5
The Company                                                      5
Risk Factors                                                     7
Selling Shareholders                                            12
Plan of Distribution                                            13
Legal Matters                                                   14
Experts                                                         14


                               1,999,887 Shares of
                                  Common Stock
                                 
                                 
                               September 19, 1997
                                 
                              ---------------------
                                 
                                   PROSPECTUS
                                 
                              ---------------------


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


<PAGE>


                                     PART II

                     INFORMATION NOT REQUIRED IN PROSPECTUS

ITEM 14. Other Expenses of Issuance and Distribution.

         The  following  table sets forth the costs and  expenses  to be paid in
connection with the sale of the shares of Common Stock being registered  hereby,
all of which will be paid by the  Registrant.  All amounts are estimates  except
for the Securities and Exchange Commission registration fee.


Securities and Exchange Commission registration fee             $     3,600
Nasdaq SmallCap Market filing fee                                     7,500
Accounting fees and expenses                                          3,500
Legal fees and expenses                                              20,000
Printing and miscellaneous                                            4,000
                                                                ------------

Total                                                           $    38,600
                                                                ------------


ITEM 15. Indemnification of Directors and Officers.

         The Registrant's  Amended and Restated  Articles of Incorporation  (the
"Restated  Articles") include a provision that eliminates the personal liability
of its directors to the Registrant and its shareholders for monetary damages for
breach of the directors'  fiduciary duties to the maximum extent permitted under
California law. This limitation has no effect on a director's  liability (i) for
acts or omissions that involve intentional  misconduct or a knowing and culpable
violation  of law,  (ii) for acts or  omissions  that a director  believes to be
contrary to the best  interests of the  Registrant or its  shareholders  or that
involve  the  absence of good faith on the part of the  director,  (iii) for any
transaction from which a director derived an improper personal benefit, (iv) for
acts or omissions that show a reckless  disregard for the director's duty to the
Registrant or its shareholders in circumstances in which the director was aware,
or should have been aware,  in the  ordinary  course of  performing a director's
duties, of a risk of a serious injury to the Registrant or its shareholders, (v)
for acts or omissions that constitute an unexcused  pattern of inattention  that
amounts  to an  abdication  of the  director's  duty  to the  Registrant  or its
shareholders,  (vi) under Section 310 of the California  Corporations  Code (the
"California Code") (concerning  contracts or transactions between the Registrant
and a director) or (vii) under Section 316 of the  California  Code  (concerning
directors'  liability  for  improper  dividends,  loans  and  guarantees).   The
provision  does not extend to acts or omissions of a director in his capacity as
an officer. Further, the provision has no effect on claims arising under federal
or state securities laws and will not affect the availability of injunctions and
other equitable  remedies  available to the  Registrant's  shareholders  for any
violation of a director's fiduciary duty to the Registrant or its shareholders.

         The Restated  Articles also include an authorization for the Registrant
to  indemnify  its agents (as  defined in Section 317 of the  California  Code),
through  bylaws  provisions,  by agreement or otherwise,  to the fullest  extent
permitted by law.  Pursuant to this latter  provision,  the Registrant's  Bylaws
provide  for  indemnification  of  the  Registrant's  directors,   officers  and
employees.  Indemnification may only be authorized by a majority of Registrant's
directors  or  shareholders  or by order of a court,  unless  the agent has been
successful on the merits. In addition,  the Registrant's policy is to enter into
indemnification  agreements  with  each of its  officers  and  directors.  These
indemnification   agreements   provide  that  directors  and  officers  will  be
indemnified  and held  harmless to the fullest  extent  permitted by law.  These
agreements,  together with the Restated  Articles,  may require the  Registrant,
among other things, to indemnify such directors,  officers and employees against
certain  liabilities  that may  arise by reason of their  status or  service  as
directors or officers (other than liabilities  resulting from willful misconduct
of a  culpable  nature),  to  advance  expenses  to them as they  are  incurred,
provided  that they  undertake to repay the amount  advanced if it is ultimately
determined  by a court that they are not  entitled  to  indemnification,  and to
obtain directors' and officers' insurance if available on reasonable terms.



<PAGE>


         Section  317  of  the   California   Code  makes   provisions  for  the
indemnification  of  officers,  directors  and other  corporate  agents in terms
sufficiently broad to indemnify such persons, under certain  circumstances,  for
liabilities  (including  reimbursement of expenses  incurred)  arising under the
Securities Act.

         The  Underwriting  Agreement  referred  to  below  sets  forth  certain
provisions  with respect to the  indemnification  of the  Registrant and certain
directors,   officers,  and  controlling  persons  against  certain  losses  and
liabilities, including certain liabilities under the Securities Act.

         The Amended and Restated  Registration Rights Agreement dated April 10,
1992,  entered into by and among the Registrant and various  investors,  and the
Amended and Restated  Registration  Rights  Agreement  dated  February 10, 1995,
entered into by and among the Registrant and various investors provide for cross
indemnification of certain holders of Registrant's securities, and of Registrant
and its  officers  and  directors  for certain  liabilities  existing  under the
Securities Act and otherwise.

         The Registrant also maintains a director and officer liability policy.



<PAGE>


ITEM 16. Exhibits.

The following exhibits are filed herewith or incorporated by reference herein:

Exhibit
Number   Exhibit Title
- ------   -------------
 4.1     Amended  and  Restated   Articles  of  Incorporation  of  the  Company.
         (Incorporated by reference to Exhibit 3.2 to the Company's Registration
         Statement  on  Form  SB-2   (Registration  No.  33-93288  LA)  declared
         effective on August 11, 1995 (the "SB-2")).
 4.2     Bylaws of the Company. (Incorporated by reference to Exhibit 3.3 to the
         SB-2).
 4.3     Specimen  Common  Stock  Certificate.  (Incorporated  by  reference  to
         Exhibit 4.1 to the SB-2).
 4.4     Common Stock Purchase  Agreement dated as of July 23, 1997 by and among
         the Company and the Investors.
 5.1     Opinion of Fenwick & West LLP.
23.1     Consent of Ernst & Young LLP, Independent Auditors.
24.1     Power of Attorney (See signature page).



<PAGE>


ITEM 17. Undertakings.

         Insofar as indemnification for liabilities arising under the Securities
Act may be  permitted to  directors,  officers  and  controlling  persons of the
Registrant  pursuant  to the  provisions  described  under  Item  15  above,  or
otherwise, the Registrant has been advised that in the opinion of the Securities
and  Exchange  Commission  such  indemnification  is  against  public  policy as
expressed in the Securities Act and is, therefore,  unenforceable.  In the event
that a claim  for  indemnification  against  such  liabilities  (other  than the
payment by the Registrant of expenses incurred or paid by a director, officer or
controlling  person of the Registrant in the  successful  defense of any action,
suit or proceeding) is asserted by such director,  officer or controlling person
in connection with the securities being registered,  the Registrant will, unless
in the  opinion  of its  counsel  the matter  has been  settled  by  controlling
precedent,  submit to a court of appropriate  jurisdiction  the question whether
such  indemnification  by it is  against  public  policy  as  expressed  in  the
Securities Act and will be governed by the final adjudication of such issue.

The undersigned Registrant hereby undertakes:

(1)  To file,  during  any  period in which  offers or sales are being  made,  a
     post-effective amendment to this Registration Statement: (i) to include any
     prospectus  required by Section 10(a)(3) of the Securities Act of 1933 (the
     "Securities  Act");  (ii) to reflect in the  prospectus any facts or events
     arising after the effective date of the Registration Statement (or the most
     recent  post-effective  amendment  thereof)  which,  individually or in the
     aggregate,  represent  a  fundamental  change  in  the  information  in the
     Registration Statement;  and (iii) to include any material information with
     respect  to the  plan  of  distribution  not  previously  disclosed  in the
     Registration  Statement or any material  change to such  information in the
     Registration Statement;  provided,  however, that (i) and (ii) do not apply
     if the information  required to be included in a  post-effective  amendment
     thereby is contained in periodic  reports filed by the Registrant  pursuant
     to Section 13 or Section 15(d) of the Securities  Exchange Act of 1934 (the
     "Exchange  Act") that are  incorporated  by reference  in the  Registration
     Statement.

(2)  That,  for the purpose of  determining  any liability  under the Securities
     Act,  each  post-effective  amendment  shall be  deemed a new  registration
     statement relating to the securities  offered therein,  and the offering of
     the  securities  at that time shall be deemed to be the  initial  bona fide
     offering thereof.

(3)  To remove from  registration by means of a post-effective  amendment any of
     the securities  being  registered which remain unsold at the termination of
     the offering.

(4)  That, for purposes of determining  any liability  under the Securities Act,
     each filing of the Registrant's  annual report pursuant to Section 13(a) or
     Section 15(d) of the Exchange Act that is incorporated by reference in this
     Registration  Statement shall be deemed to be a new Registration  Statement
     relating  to the  securities  offered  therein,  and the  offering  of such
     securities  at that  time  shall be  deemed  to be the  initial  bona  fide
     offering thereof.



<PAGE>


                                   SIGNATURES

In  accordance  with  the  requirements  of  the  Securities  Act of  1933,  the
registrant certifies that it has reasonable grounds to believe that it meets all
of the  requirements  for filing on Form S-3 and  authorized  this  Registration
Statement  to be  signed  on its  behalf  by  the  undersigned,  thereunto  duly
authorized,  in the City of Foster City,  State of California,  on September 19,
1997.

                                         CELLEGY PHARMACEUTICALS, INC.

                                         By: /s/  K. MICHAEL FORREST
                                            ------------------------------------
                                                   K. Michael Forrest
                                                   President and Chief Executive
                                                   Officer



<PAGE>


                                POWER OF ATTORNEY

         KNOW ALL MEN BY THESE  PRESENTS that each  individual  whose  signature
appears below constitutes and appoints K. Michael Forrest and A. Richard Juelis,
and each of them,  his true and lawful  attorneys-in-fact  and agents  with full
power of substitution,  for him and in his name, place and stead, in any and all
capacities, to sign any and all amendments (including post-effective amendments)
to this  Registration  Statement  on Form  S-3,  and to file the  same  with all
exhibits thereto and all documents in connection therewith,  with the Securities
and Exchange Commission,  granting unto said  attorneys-in-fact  and agents, and
each of them,  full power and authority to do and perform each and every act and
thing requisite and necessary to be done in and about the premises,  as fully to
all intents and purposes as he might or could do in person, hereby ratifying and
confirming all of said  attorneys-in-fact  and agents, or any of them, or his or
their  substitute or substitutes,  may lawfully do or cause to be done by virtue
hereof.

<TABLE>
         In accordance with the requirements of the Securities Act of 1933, this
Registration  Statement  has  been  signed  by  the  following  persons  in  the
capacities and on the dates stated.

<CAPTION>
              Name                                       Title                             Date

Principal Executive Officer:
<S>                                      <C>                                           <C>
/s/   K. MICHAEL FORREST                 President, Chief Executive Officer and        September 19, 1997
- ------------------------------------     Director
     K. Michael Forrest                  

Principal Financial Officer
and Principal Accounting Officer:

/s/   A. RICHARD JUELIS                  Vice President, Finance, Chief Financial      September 19, 1997
- ------------------------------------     Officer and Secretary
      A. Richard Juelis                  

Directors:

/s/   CARL R. THORNFELDT, M.D.           Chairman of the Board of Directors            September 19, 1997
- ------------------------------------     
      Carl R. Thornfeldt, M.D.

/s/   JACK L. BOWMAN                     Director                                      September 19, 1997
- ------------------------------------     
      Jack L. Bowman

/s/   DENIS R. BURGER, PH.D.             Director                                      September 19, 1997
- ------------------------------------     
      Denis R. Burger, Ph.D.

/s/   PETER M. ELIAS, M.D.               Director                                      September 19, 1997
- ------------------------------------     
      Peter M. Elias, M.D.

/s/   TOBI B. KLAR, M.D.                 Director                                      September 19, 1997
- ------------------------------------     
      Tobi B. Klar, M.D.

/s/   ALAN A. STEIGROD                   Director                                      September 19, 1997
- ------------------------------------     
      Alan A. Steigrod

/s/   LARRY J. WELLS                     Director                                      September 19, 1997
- ------------------------------------     
      Larry J. Wells
</TABLE>






                                                                     EXHIBIT 4.4

                          CELLEGY PHARMACEUTICALS, INC.

                         COMMON STOCK PURCHASE AGREEMENT

     THIS COMMON STOCK PURCHASE AGREEMENT (this "Agreement") is made and entered
into  as of  July  23,  1997  by and  among  Cellegy  Pharmaceuticals,  Inc.,  a
California  corporation (the "Company"),  and the parties listed on the Schedule
of Investors separately delivered to the Investors (the "Schedule of Investors")
(each  hereinafter  individually  referred to as an "Investor" and  collectively
referred to as the "Investors").

     1. AGREEMENT TO PURCHASE AND SELL STOCK.

         1.1  Authorization.  As of the Closing  (as defined  below) the Company
will have authorized the issuance,  pursuant to the terms and conditions of this
Agreement, of up to 1,547,827 shares of the Company's Common Stock, no par value
(the "Common Stock").

         1.2 Agreement to Purchase and Sell.  The Company agrees to sell to each
Investor at the Closing, and each Investor agrees, severally and not jointly, to
purchase  from the Company at the Closing,  the number of shares of Common Stock
for the aggregate price set forth beside such Investor's name on the Schedule of
Investors, at the price per share for such Investor set forth on the Schedule of
Investors.  The  shares of Common  Stock  purchased  and sold  pursuant  to this
Agreement  will  be  collectively  hereinafter  referred  to as  the  "Purchased
Shares."

     2. CLOSING.

         2.1 The Closing.  The purchase  and sale of the  Purchased  Shares will
take place at the  offices of Fenwick & West LLP,  Two Palo Alto  Square,  Suite
800, Palo Alto, California, at 11 a.m. Pacific Time, on July 23, 1997 or at such
other time and place as the Company and  Investors who have agreed to purchase a
majority of the Purchased  Shares  listed on the Schedule of Investors  mutually
agree  upon  (which  time and place are  referred  to in this  Agreement  as the
"Closing").  At the  Closing,  the  Company  will  deliver  to each  Investor  a
certificate  representing  the number of Purchased Shares that such Investor has
agreed to  purchase  hereunder  as shown on the  Schedule of  Investors  against
delivery to the  Company by such  Investor  of the full  purchase  price of such
Purchased Shares,  paid by (i) a check payable to the Company's order, (ii) wire
transfer of funds to the Company or (iii) any combination of the foregoing.

     3.  REPRESENTATIONS  AND  WARRANTIES  OF THE  COMPANY.  The Company  hereby
represents and warrants to Investor that,  except as set forth in the Disclosure
Schedule and  Schedule of  Exceptions  (the  "Disclosure  Schedule")  separately
delivered by the Company to the Investors  (which  Disclosure  Schedule shall be
deemed to be  representations  and  warranties  to the  Investors by the Company
under this Section and to qualify each of the representations and warranties set
forth herein),  the statements in the following paragraphs of this Section 3 are
all true and correct:

     3.1  Organization,  Good  Standing  and  Qualification.  The  Company  is a
corporation duly organized, validly existing and in good standing under the laws
of the State of California,  and has all requisite corporate power and authority
to conduct its business as currently  conducted.  The Company is qualified to do
business as a foreign  corporation in each  jurisdiction  where failure to be so
qualified could  reasonably be expected to have a material adverse effect on the
business, financial condition, results of operations, assets or prospects of the
Company  (the  "Business")  (such  effect  referred  to as a  "Material  Adverse
Effect").

     3.2  Capitalization.  Immediately  before the Closing the capitalization of
the Company will consist of the following:



<PAGE>


             (a)  Preferred  Stock.  A total of 5,000,000  authorized  shares of
Preferred Stock, no par value per share (the "Preferred Stock"),  1,100 of which
have been designated as Series A Preferred Stock (the "Series A Preferred"). The
Series A Preferred  has the rights,  preferences  and  privileges  stated in the
Certificate of Designation filed with the California Secretary of State on April
15, 1996. A total of 25 shares of Series A Preferred are issued and outstanding,
and no other shares of Preferred Stock are outstanding.

             (b) Common Stock. A total of 20,000,000 authorized shares of Common
Stock, of which approximately 5,879,115 shares were issued and outstanding as of
June 30, 1997 (subject to increase only by employee stock option exercises after
June 30, 1997 or by conversion of outstanding  shares of Series A Preferred into
shares of Common Stock).

             (c)  Options,  Warrants,  Reserved  Shares.  Except  for:  (i)  the
conversion  privileges  of  the  Series  A  Preferred,  (ii)  the  approximately
1,049,047  shares of Common Stock issuable upon exercise of options  outstanding
as of June 30, 1997,  (iii)  approximately  additional  74,000  shares of Common
Stock  reserved for issuance  under the Company's  1995  Directors  Stock Option
Plan, (iv) approximately  additional 391,830 shares of Common Stock reserved for
issuance  under the  Company's  1995 Equity  Incentive  Plan and (v) warrants to
purchase  an  aggregate  of  1,497,911  shares  of Common  Stock,  there are not
outstanding  any options,  warrants,  rights or  agreements  for the purchase or
acquisition  from  the  Company  of any  shares  of  its  capital  stock  or any
securities  convertible  into or ultimately  exchangeable or exercisable for any
shares of the Company's capital stock.

     3.3 Subsidiaries.  The Company does not presently own or control,  directly
or indirectly, any interest in any other corporation,  partnership, trust, joint
venture, association, or other entity.

     3.4 Due  Authorization;  No Violation.  All corporate action on the part of
the Company and its  officers,  directors  and  shareholders  necessary  for the
authorization, execution and delivery of, and the performance of all obligations
of  the  Company  under,  this  Agreement,  and  the  authorization,   issuance,
reservation for issuance and delivery of all of the Purchased  Shares being sold
under this Agreement,  has been taken or will be taken prior to the Closing, and
this  Agreement  constitutes  a valid  and  legally  binding  obligation  of the
Company, enforceable against the Company in accordance with its terms, except as
enforceability  may  be  limited  by  (i)  applicable  bankruptcy,   insolvency,
reorganization  or others laws of general  application  relating to or affecting
the enforcement of creditors'  rights  generally and (ii) the effect of rules of
law governing the  availability  of equitable  remedies.  Neither the execution,
delivery or performance by the Company of this Agreement nor the consummation by
the Company of the  transactions  contemplated  hereby will (i) conflict with or
result in a breach of any provision of the Restated Articles of Incorporation of
the Company (the  "Restated  Articles")  or the Company's  Bylaws,  (ii) cause a
default (or give rise to any right of termination, cancellation or acceleration)
under any of the terms,  conditions  or  provisions  of any material  agreement,
instrument or  obligation  to which the Company is a party,  which default could
reasonably  be expected to have a Material  Adverse  Effect or (iii) violate any
law, statute, rule or regulation or judgment,  order, writ, injunction or decree
of any  governmental  authority,  in each case  applicable to the Company or its
properties  or  assets  and  which,  individually  or in  the  aggregate,  could
reasonably be expected to have a Material Adverse Effect.

     3.5 Valid Issuance of Stock. The Purchased  Shares,  when issued,  sold and
delivered in accordance  with the terms of this Agreement for the  consideration
provided  for  herein,  will  be  duly  and  validly  issued,   fully  paid  and
nonassessable and are not subject to preemptive rights of any shareholder of the
Company.

     3.6 Governmental Consents. No consent, approval, order or authorization of,
or  registration,  qualification,  designation,  declaration or filing with, any
federal,  state or local  governmental  authority  on the part of the Company is
required in connection with the consummation of the transactions contemplated by
this Agreement, except for qualifications or filings under the Securities Act of
1933,  as amended  (the "Act") and the  applicable  rules and  regulations  (the
"Rules  and  Regulations")  of  the  Securities  and  Exchange  Commission  (the
"Commission") under the Act, and all other applicable  securities laws as may be
required in connection with the transactions contemplated by this Agreement. All
such  qualifications  will be effective on the Closing,  and all such filings be
made within the time prescribed by law.



<PAGE>


     3.7 Absence of Changes.  After the respective dates as of which information
is given in the Company's Proxy Statement for the annual meeting of shareholders
held on June 5, 1997,  the  Company's  Annual Report on Form 10-KSB for the year
ended December 31, 1996 and the Company's  Quarterly  Reports on Form 10-QSB for
the quarter ended March 31, 1997,  respectively  (such documents,  together with
the  Disclosure   Schedule,   referred  to   collectively   as  the  "Disclosure
Documents"), there has not been (i) any material adverse change in the Business,
(ii) any  transaction  that is material to the  Company,  (iii) any  obligation,
direct or contingent,  that is material to the Company, incurred by the Company,
(iv) any change in the outstanding  indebtedness of the Company that is material
to the Company, (v) any dividend declared,  paid or made on the capital stock of
the Company or (vi) any loss or damage  (whether or not insured) to the property
of the Company which has been  sustained  which could  reasonably be expected to
have a Material Adverse Effect.

     3.8 Litigation. There is no action, suit, proceeding, claim, arbitration or
investigation  ("Action")  pending (or, to the  Company's  knowledge,  currently
threatened) against the Company, its activities, properties or assets, which (i)
might prevent the consummation of the transactions  contemplated  hereby or (ii)
if adversely resolved against the Company could reasonably be expected to have a
Material Adverse Effect.

     3.9 Nasdaq  Listing.  The Common  Stock is  registered  pursuant to Section
12(g) of the Securities  Exchange Act of 1934, as amended (the "Exchange  Act"),
and is listed on the Nasdaq SmallCap Market.  To its knowledge,  the Company has
not received any notification that the Commission or the National Association of
Securities  Dealers,  Inc. is contemplating the termination of such registration
or listing. Before the Shelf Registration Statement is declared effective by the
Commission,  the  Purchased  Shares will have been approved for quotation on the
Nasdaq SmallCap Market, subject to notice of issuance.

     3.10  Exchange  Act Filings.  The Company has filed in a timely  manner all
reports  and  other  information  required  to be  filed  ("Filings")  with  the
Commission  pursuant to the Exchange Act during  preceding  the twelve  calendar
months. On their respective dates of filing,  the Filings complied as to form in
all  material  respects  with the  requirements  of the  Exchange  Act,  and the
published rules and regulations of the Commission promulgated thereunder. To the
Company's  knowledge,  on their respective dates of filing,  the Filings did not
include any untrue statement of a material fact required to be stated therein or
necessary to make the statements therein, in light of the circumstances in which
they were made, not misleading,  and all financial  statements  contained in the
Filings  fairly  present the  financial  position of the Company on the dates of
such statements and the results of operations for the periods covered thereby in
accordance with generally accepted accounting  principles  consistently  applied
throughout the periods involved and prior periods, except as otherwise indicated
in the notes to such financial statements.

     3.11  Disclosure.  To the  Company's  knowledge,  the  representations  and
warranties  made by the  Company in this  Agreement  (including  the  Disclosure
Schedule)  when read together do not contain any untrue  statement of a material
fact and do not omit to state a material fact  necessary to make the  statements
herein as a whole not misleading.

     3.12  Governmental  Permits,  Etc.  The  Company  possesses  all  licenses,
franchises, governmental approvals, permits or other governmental authorizations
(collectively,  "Authorizations")  relating to the  operation  of the  Business,
except for those  Authorizations  the  failure  of which to  possess  would not,
separately or in the aggregate, have a Material Adverse Effect. To the Company's
knowledge, the Company is in compliance with the terms of all Authorizations and
all laws,  ordinances,  regulations and decrees which to the Company's knowledge
are applicable to the Business,  except for such non-compliance  which does not,
separately or in the aggregate, have a Material Adverse Effect.

     3.13 Business  Relationships.  In November 1996, the Company entered into a
license agreement (the "Glaxo  Agreement") with Glaxo Dermatology  ("Glaxo"),  a
division of Glaxo Wellcome, Inc., granting Glaxo worldwide rights to Glylorin, a
lipid  compound of the  Company.  The Company does not have any  knowledge  that
leads the Company to believe that Glaxo intends to terminate the Glaxo Agreement
or its  relationship  with the  Company,  and the Company has not  received  any
notices or other communications from Glaxo to that effect.



<PAGE>


     4.  REPRESENTATIONS,  WARRANTIES AND CERTAIN AGREEMENTS OF INVESTORS.  Each
Investor hereby represents and warrants to, and agrees with, the Company, that:

     4.1 Authorization. All corporate action on the part of the Investor and its
officers, directors and stockholders necessary for the authorization,  execution
and delivery of, and the  performance of all  obligations of the Investor under,
this  Agreement  has been taken or will be taken prior to the Closing,  and this
Agreement  constitutes a valid and legally  binding  obligation of the Investor,
enforceable  against  the  Investor  in  accordance  with its  terms,  except as
enforceability  may  be  limited  by  (i)  applicable  bankruptcy,   insolvency,
reorganization  or others laws of general  application  relating to or affecting
the enforcement of creditors'  rights  generally and (ii) the effect of rules of
law governing the availability of equitable remedies.

     4.2 Purchase for Own Account.  The Purchased Shares to be purchased by such
Investor  hereunder  will be acquired for  investment  for such  Investor's  own
account,  not as a nominee or agent, and not with a view to the public resale or
distribution  thereof  within the meaning of the Act,  and such  Investor has no
present  intention  of selling,  granting  any  participation  in, or  otherwise
distributing the same. If not an individual,  such Investor also represents that
such  Investor  has not  been  formed  for the  specific  purpose  of  acquiring
Purchased Shares.

     4.3  Disclosure  of  Information.  The  Investor has received a copy of the
Disclosure  Documents  and  has  received  or has  had  full  access  to all the
information it considers necessary or appropriate to make an informed investment
decision  with respect to the  Purchased  Shares to be purchased by the Investor
under this Agreement.  Investor  further has had an opportunity to ask questions
and receive  answers from the Company  regarding the terms and conditions of the
offering of the Purchased  Shares and to obtain  additional  information (to the
extent  the  Company  possessed  such  information  or could  acquire it without
unreasonable effort or expense) necessary to verify any information furnished to
the Investor or to which the Investor had access. The foregoing,  however,  does
not in any way limit or modify the  representations  and warranties  made by the
Company in Section 3.

         4.4 Investment Experience.  Such Investor understands that the purchase
of the Purchased  Shares  involves  substantial  risk.  Such  Investor:  (i) has
experience as an investor in securities  of companies in the  development  stage
and  acknowledges  that such  Investor is able to fend for itself,  can bear the
economic risk of such Investor's investment in the Purchased Shares and has such
knowledge and experience in financial or business  matters that such Investor is
capable of evaluating  the merits and risks of this  investment in the Purchased
Shares and  protecting  its own  interests in  connection  with this  investment
and/or (ii) has a preexisting personal or business relationship with the Company
and certain of its officers,  directors or  controlling  persons of a nature and
duration  that  enables  such  Investor to be aware of the  character,  business
acumen and financial circumstances of such persons.

         4.5 Accredited Investor Status. Unless otherwise expressly indicated on
the Schedule of Investors to this  Agreement,  such  Investor is an  "accredited
investor" within the meaning of Regulation D promulgated under the Act.

         4.6 Restricted Securities. Such Investor understands that the Purchased
Shares are  characterized as "restricted  securities"  under the Act inasmuch as
they are being acquired from the Company in a transaction not involving a public
offering and that under the Act and the Rules and  Regulations  such  securities
may be  resold  without  registration  under  the Act  only in  certain  limited
circumstances.  In this connection,  such Investor represents that such Investor
is  familiar  with  Rule  144 of  the  Commission  and  understands  the  resale
limitations  imposed thereby and by the Act. Such Investor  understands that the
Company is under no obligation to register any of the Purchased Shares except as
provided in Section 7 below.

         4.7 Further Limitations on Disposition. Without in any way limiting the
representations  set forth above,  such Investor  further agrees not to make any
disposition of all or any portion of the Purchased Shares unless and until:



<PAGE>


            (a) there is then in effect a registration  statement  under the Act
covering such proposed  disposition  and such  disposition is made in accordance
with  such  registration  statement  and the  provisions  of  Section  7 of this
Agreement; or

            (b) (i)  such  Investor  shall  have  notified  the  Company  of the
proposed  disposition  and shall have  furnished the Company with a statement of
the circumstances  surrounding the proposed disposition,  and (ii) such Investor
shall  have  furnished  the  Company,  at the  expense of such  Investor  or its
transferee,  with an opinion of counsel, reasonably satisfactory to the Company,
that such disposition will not require registration of such securities under the
Act.

                Notwithstanding  the provisions of paragraphs (a) and (b) above,
no such registration  statement or opinion of counsel shall be required: (i) for
any transfer of any Purchased  Shares in compliance  with Rule 144 or Rule 144A,
or  (ii)  for  any  transfer  of  Purchased  Shares  by an  Investor  that  is a
partnership or a corporation to (A) a partner of such partnership or shareholder
of such  corporation,  or (B) the estate of any such partner or shareholder,  or
(iii) for the transfer by gift, will or intestate  succession by any Investor to
his or her spouse or lineal descendants or ancestors or any trust for any of the
foregoing;  provided,  that in each of the foregoing cases the transferee agrees
in writing to be subject to the terms of this Section 4 (other than Section 4.5)
to the same extent as if the transferee were an original Investor hereunder.

         4.8 Legends.  It is understood  that the  certificates  evidencing  the
Purchased Shares will bear the legends set forth below:

            (a) THE SECURITIES REPRESENTED HEREBY HAVE NOT BEEN REGISTERED UNDER
THE SECURITIES ACT OF 1933, AS AMENDED (THE "ACT"), OR UNDER THE SECURITIES LAWS
OF  CERTAIN   STATES.   THESE   SECURITIES  ARE  SUBJECT  TO   RESTRICTIONS   ON
TRANSFERABILITY  AND  RESALE  AND MAY NOT BE  TRANSFERRED  OR  RESOLD  EXCEPT AS
PERMITTED UNDER THE ACT AND THE APPLICABLE STATE  SECURITIES  LAWS,  PURSUANT TO
REGISTRATION OR EXEMPTION THEREFROM.  INVESTORS SHOULD BE AWARE THAT THEY MAY BE
REQUIRED TO BEAR THE FINANCIAL RISKS OF THIS INVESTMENT FOR AN INDEFINITE PERIOD
OF TIME.  THE ISSUER OF THESE  SECURITIES  MAY  REQUIRE AN OPINION OF COUNSEL IN
FORM AND  SUBSTANCE  SATISFACTORY  TO THE ISSUER TO THE EFFECT THAT ANY PROPOSED
TRANSFER  OR  RESALE  IS IN  COMPLIANCE  WITH THE ACT AND ANY  APPLICABLE  STATE
SECURITIES LAWS.

            (b) THE SHARES  EVIDENCED  BY THIS  CERTIFICATE  ARE  SUBJECT TO THE
PROVISIONS  OF,  AND MAY HAVE  CERTAIN  REGISTRATION  RIGHTS  PURSUANT  TO,  THE
PROVISIONS OF A PURCHASE AGREEMENT BETWEEN THE COMPANY AND THE HOLDER, WHICH MAY
RESTRICT  THE TRANSFER OF SUCH SHARES IN CERTAIN  CIRCUMSTANCES.  A COPY OF SUCH
AGREEMENT MAY BE OBTAINED, WITHOUT CHARGE, AT THE COMPANY'S PRINCIPAL OFFICE.

            (c) After  consultation  with counsel for the  Investor,  any legend
that counsel to the Company  reasonably deems  appropriate under the laws of the
State of California.

     The  legends set forth in (a) and (b) above shall be removed by the Company
from any certificate evidencing Purchased Shares upon delivery to the Company of
an opinion of counsel to the Investor,  reasonably  satisfactory to the Company,
that the legended security can be freely  transferred in a public sale without a
registration  statement  being in effect  under the Act and in  compliance  with
exemption  requirements  under  applicable  state  securities laws and that such
transfer  will not  jeopardize  the exemption or  exemptions  from  registration
pursuant to which the Company issued the Purchased Shares.

         4.9 Resale Restrictions.  Each Investor agrees that it will not, to the
extent  requested  by the  Company  or an  underwriter  or  placement  agent  of
securities of the Company, directly or indirectly offer, sell, contract or grant
an option to sell,  pledge,  encumber,  or  otherwise  dispose  of or  otherwise
transfer  (a  "Disposition")   any  Purchased  Shares  (other  than  to  donees,
shareholders or partners of the Investor who agree to



<PAGE>


be  similarly  bound)  for  up  to  180  days  after  the  effective  date  of a
registration  statement of the Company filed under the Act;  provided,  however,
that (i) such agreement shall be applicable only to the first such  registration
statement  of the  Company  filed after the date of this  Agreement  that covers
securities  to be sold on its behalf to the public in an  underwritten  offering
but not to any Registrable Securities (as hereinafter defined) that are included
in and sold  pursuant to such  registration  statement;  and (ii) all  executive
officers  and  directors  of the Company  then  holding  Common Stock enter into
similar agreements.

     5. CONDITIONS TO INVESTOR'S OBLIGATIONS AT CLOSING.

     5.1 Closing.  The  obligations  of each  Investor  under  Section 2 of this
Agreement  to purchase  the  Purchased  Shares at the Closing are subject to the
fulfillment  or  waiver,  on or before  the  Closing,  of each of the  following
conditions,  and the  Company  shall use all  reasonable  efforts  to cause such
conditions to be satisfied on or before the Closing:

            5.1.1   Representations   and   Warranties   True.   Each   of   the
representations  and  warranties of the Company  contained in Section 3 shall be
true and  correct on and as of the  Closing  with the same effect as though such
representations and warranties had been made on and as of the Closing.

            5.1.2  Performance.  The Company  shall have  performed and complied
with all agreements, obligations and conditions contained in this Agreement that
are required to be performed or complied with by it on or before the Closing and
shall have  obtained all  approvals,  consents and  qualifications  necessary to
complete the purchase and sale described herein.

            5.1.3  Compliance  Certificate.  The Company shall have delivered to
the  Investors  at  the  Closing  a  certificate  signed  on its  behalf  by its
President,  Chief Executive Officer,  or Chief Financial Officer certifying that
the conditions specified in Sections 5.1.1 and 5.1.2 have been fulfilled.

            5.1.4 Registration; Securities Exemptions. The offer and sale of the
Purchased  Shares to the Investors  pursuant to this  Agreement  shall be exempt
from the registration  requirements  under the Act and the California  Corporate
Securities Law of 1968, as amended, and the rules thereunder (the "Law") and the
registration  and/or  qualification  requirements of all other  applicable state
securities laws.

            5.1.5 Proceedings and Documents. All corporate and other proceedings
in  connection  with  the  transactions  contemplated  at the  Closing  and  all
documents  incident  thereto  shall  be  reasonably  satisfactory  in  form  and
substance  to the  Investor and to special  counsel to the  Investors,  and they
shall each have received all such documents as they may reasonably request.

            5.1.6  Transfer  Agent.  The Company  shall have made  provision  to
include the Purchased  Shares within the authority of its transfer  agent and/or
registrar for its shares.

            5.1.7 No Material Change.  There shall have been no material adverse
change in the Business from the date of this Agreement.

            5.1.8  Opinion of  Counsel.  The  Investors  shall have  received an
opinion  of  counsel  to the  Company  substantially  in the form of  Exhibit  B
attached hereto.

     6. CONDITIONS TO THE COMPANY'S OBLIGATIONS AT CLOSING.

         6.1.  Closing.  The  obligations of the Company under this Agreement to
sell the  Purchased  Shares to the  Investors  at the Closing are subject to the
fulfillment  or  waiver  on or  before  the  Closing  of each  of the  following
conditions by the Investor,  and each Investor shall use all reasonable  efforts
to cause such conditions to be satisfied on or before the Closing:



<PAGE>


            6.1.1  Representations  and  Warranties.   The  representations  and
warranties  of the Investor  contained in Section 4 shall be true and correct on
and as of the Closing  with the same effect as though such  representations  and
warranties had been made on and as of the Closing.

            6.1.2 Payment of Purchase  Price.  The Investor shall have delivered
to the Company the purchase  price for the Purchased  Shares  specified for such
Investor on the Schedule of Investors  attached  hereto,  in accordance with the
provisions of Section 2.

            6.1.3 Registration; Securities Exemptions. The offer and sale of the
Purchased Shares to the Investor pursuant to this Agreement shall be exempt from
the  registration  requirements  under  the Act and  shall  be  exempt  from the
qualification  requirements of the Law and the registration and/or qualification
requirements of all other applicable state securities laws.

            6.1.4 Proceedings and Documents. All corporate and other proceedings
in  connection  with  the  transactions  contemplated  at the  Closing  and  all
documents  incident  thereto  shall  be  reasonably  satisfactory  in  form  and
substance to the Company and to the  Company's  legal  counsel,  and the Company
shall have received such documents as it may reasonably request.

     7. REGISTRATION RIGHTS.

         7.1 Definitions. For purposes of this Agreement:

            (a) Form S-3.  The term  "Form S-3" means such form under the Act as
is in effect on the date hereof or any successor registration form under the Act
subsequently  adopted by the Commission which permits inclusion or incorporation
of substantial  information by reference to other documents filed by the Company
with the Commission.

            (b) Holder.  The term  "Holders"  shall mean holders of  Registrable
Securities that have registration rights pursuant to this Agreement.

            (c)   Registration.   The  terms   "register,"   "registered,"   and
"registration"  refer to a  registration  effected  by  preparing  and  filing a
registration  statement  in  compliance  with the Act,  and the  declaration  or
ordering of effectiveness of such registration statement.

            (d) Registrable Securities. The term "Registrable Securities" means:
(1) all of the Purchased Shares,  (2) any other shares of Common Stock owned, at
the  time  of  filing  of the  Form  S-3 by the  Company,  by an  Investor  that
reasonably  may be deemed to be an  "affiliate"  (as defined in Rule 144) of the
Company,  and (3) any shares of Common Stock of the Company issued as a dividend
or other  distribution with respect to, or in exchange for or in replacement of,
any of the shares of Common  Stock  that are  included  in  clauses  (1) and (2)
above; provided,  however, that the term "Registrable  Securities" shall exclude
in  all  events  (and  such   securities   shall  not  constitute   "Registrable
Securities") (i) any Registrable Securities sold or transferred by a person in a
transaction  in which the  registration  rights granted under this Agreement are
not assigned in  accordance  with the  provisions  of this  Agreement,  (ii) any
Registrable  Securities  sold in a public  offering  pursuant to a  registration
statement  filed with the  Commission or sold  pursuant to Rule 144  promulgated
under the Act ("Rule 144") or (iii) as to any Holder, the Registrable Securities
held by such Holder if all of such  Registrable  Securities can be publicly sold
without volume restriction within a three-month period pursuant to Rule 144.

            (e)  Prospectus:  The term  "Prospectus"  shall mean the  prospectus
included in any Shelf Registration Statement (including,  without limitation,  a
prospectus that discloses information previously omitted from a prospectus filed
as part of an  effective  registration  statement  in  reliance  upon  Rule 430A
promulgated  under  the Act),  as  amended  or  supplemented  by any  prospectus
supplement  (including,  without  limitation,  any  prospectus  supplement  with
respect  to  the  terms  of  the  offering  of any  portion  of the  Registrable
Securities  covered  by  such  Shelf  Registration  Statement),  and  all  other
amendments  and   supplements  to  the



<PAGE>


Prospectus,  including post-effective  amendments, and all material incorporated
by reference or deemed to be incorporated by reference in such Prospectus.

            (f) Shelf Registration Statement. See Section 7.2(a).

         7.2 Form S-3 Shelf Registration.

            (a)  Registration.  The  Company  shall  prepare  and file  with the
Commission  within 60 days following the Closing and use all reasonable  efforts
to have declared  effective as soon as  practicable  thereafter,  a registration
statement on Form S-3 (or, if the Company is not then  eligible to use Form S-3,
then another appropriate form) providing for the resale by the Holders of all of
the  Registrable  Securities  (the "Shelf  Registration  Statement").  The Shelf
Registration  Statement may include securities other than those held by Holders.
Cellegy  shall use its best  efforts  to keep the Shelf  Registration  Statement
continuously  effective,  pursuant  to the  Act and the  Rules  and  Regulations
promulgated  thereunder,  until (i) the date when  such  Registrable  Securities
cease to meet the definition of Registrable  Securities pursuant to Section 7.1,
or (ii) the Company's obligations hereunder terminate; provided, however:

            (i) that the Holders will sell the Registrable  Securities  pursuant
to such registration only during a "Permitted Window" (as defined below);

                  (ii) if the Company  furnishes  to the  Holders a  certificate
signed by the President or Chief Executive  Officer of the Company stating that,
in the good faith judgment of the Board of Directors of the Company, it would be
seriously  detrimental to the Company and its  shareholders for sales to be made
from such Shelf  Registration  Statement at such time (or, in the case a "Notice
of  Resale"  (as  defined  below)  has  been  given,  that  would  be  seriously
detrimental  to the Company and its  shareholders  for the  Permitted  Window to
commence at such time) due to (A) the  existence  of a material  development  or
potential material development  involving the Company which the Company would be
obligated  to disclose in the  Prospectus  contained  in the Shelf  Registration
Statement,  which  disclosure  would in the good faith  judgment of the Board of
Directors of the Company be premature or otherwise  inadvisable  at such time or
(B)  concurrent  public  filings  with  the  Commission  of  other  registration
statements,  then the  Company  will  have the right to defer  the  filing  (the
"Deferral  Right") of the Shelf  Registration  Statement (or the commencement of
the Permitted  Window, as the case may be) for a period of not more than 60 days
after the date it would  otherwise  be required  to file the Shelf  Registration
Statement  pursuant to this  Section  7.2(a) (or after  receipt of the Notice of
Resale,  as the case may  be);  provided,  however,  that the  Company  will not
utilize  the  Deferral  Right more than once in any  twelve  month  period;  and
provided  further,  however,  that the Company may defer the filing of the Shelf
Registration  Statement (or the commencement of the Permitted Window as the case
may be) for up to 180 days if so requested by an underwriter in connection  with
an  underwritten  offering of the  Company's  securities  so long as any selling
shareholders in such underwritten offering are subject to a lock-up agreement of
the same duration (other than with respect to the Company  securities to be sold
by such selling shareholders in such underwritten offering); and

                  (iii) that the Company will not be required to effect any such
registration,  qualification  or compliance under applicable state blue sky laws
in any particular jurisdiction in which the Company would thereby be required to
qualify to do business or to execute a general consent to service of process.

            In the event that the Shelf Registration Statement shall cease to be
effective,  the  Company  shall  promptly  prepare  and file a new  registration
statement covering the Registrable  Securities and shall use its best efforts to
have such registration  statement  declared  effective as soon as possible.  Any
such registration statement shall be considered a "Shelf Registration Statement"
hereunder.

            (b)  Permitted  Window.  For  the  purposes  of  this  Agreement,  a
"Permitted  Window"  with  respect  to a Holder  is a period  of 30  consecutive
calendar days  commencing  upon delivery to the Holder of the Company's  written
notification to the Holder in response to a Notice of Resale that the Prospectus
contained in the Shelf Registration  Statement is available for resale. In order
to cause a Permitted Window to commence, a Holder must first give written notice
to the Company of its present intention to sell part or all of the



<PAGE>


Registrable  Securities  pursuant to such  registration  (a "Notice of Resale").
Upon receipt of such Notice of Resale,  the Company will give written  notice to
the Holders as soon as practicable, but in no event not more than three business
days after such receipt, that (A) the Permitted Window will commence on the date
such notice is received by the Holder,  (B) it is  necessary  for the Company to
supplement the  Prospectus or make an appropriate  filing under the Exchange Act
so as to cause the  Prospectus to become  current  (unless a certificate  of the
President or Chief  Executive  Officer is  delivered  as provided in  7.2(a)(ii)
above),  or (C) the  Company  is  required  under  the Act  and  the  Rules  and
Regulations  thereunder  to amend the Shelf  Registration  Statement in order to
cause the  Prospectus to be current  (unless a  certificate  of the President or
Chief Executive  Officer is delivered as provided in 7.2(a)(ii)  above).  If the
Company  determines that a supplement to the Prospectus,  the filing of a report
pursuant to the Exchange Act or an amendment to the Shelf Registration Statement
required  under the Act,  as provided  above,  is  necessary,  it will take such
actions as soon as reasonably  practicable (subject to paragraph (c) below), and
the Company will notify the Holder of the filing of such  supplement,  report or
amendment,  and, in the case of an amendment, the effectiveness thereof, and the
Permitted Window will then commence.

            (c) Closing of Permitted  Window.  During a Permitted  Window and in
the event (i) of the  happening  of any event of the kind  described  in Section
7.3(c) hereof or (ii) that, in the judgment of the Company's Board of Directors,
it is advisable to suspend use of the Prospectus  for a discrete  period of time
due to undisclosed pending corporate developments or pending public filings with
the  Commission  (which  need not be  described  in detail),  the Company  shall
deliver a  certificate  in writing to the Holder to the effect of the  foregoing
and, upon receipt of such certificate, the Permitted Window shall terminate. The
Permitted  Window  shall  resume  upon the  Holder's  receipt  of  copies of the
supplemented or amended Prospectus,  or at such time as the Holder is advised in
writing by the Company that the  Prospectus may be used, and at such time as the
Holder has received  copies of any additional or  supplemental  filings that are
incorporated  or deemed  incorporated  by reference in such Prospectus and which
are  required  to be  delivered  as part of the  Prospectus.  In any event,  the
Permitted Window shall resume no later than 60 days after it has been terminated
pursuant to this Section.  If the Company has previously  terminated a Permitted
Window pursuant to this  subsection  within 90 days of the date that it delivers
another notice pursuant this subsection  terminating  another  Permitted Window,
then the time period set forth in the preceding  sentence  shall be shortened so
that the  Permitted  Window shall resume no later than 10 days after it has been
terminated pursuant to such second notice.

            (d) Expenses.  The  registration  fees and expenses  incurred by the
Company in connection with the Shelf Registration Statement and actions taken by
the  Company in  connection  with each  Permitted  Window  shall be borne by the
Company. Holder shall be responsible for any fees and expenses of its counsel or
other advisers.

         7.3  Obligations  of the  Company.  Whenever  required  to  effect  the
registration of any  Registrable  Securities  under this Agreement,  the Company
shall, as expeditiously as reasonably possible:

            (a)  Furnish to the Holder  such  number of copies of a  Prospectus,
including a preliminary  Prospectus,  in conformity with the requirements of the
Act,  and  such  other  documents  as it may  reasonably  request  in  order  to
facilitate the  disposition of the Registrable  Securities  owned by it that are
included in such registration.

            (b)  Use  all  reasonable   efforts  to  register  and  qualify  the
securities covered by such registration statement under such other securities or
Blue Sky laws of such  jurisdictions  as shall be  reasonably  requested  by the
Holder,  provided that the Company shall not be required in connection therewith
or as a condition thereto to qualify to do business or to file a general consent
to service of process in any such states or jurisdictions.

            (c) Notify the Holder  promptly (i) of any request by the Commission
or any other  federal  or state  governmental  authority  during  the  period of
effectiveness of a registration  statement for amendments or supplements to such
registration statement or related prospectus or for additional information, (ii)
of the issuance by the  Commission  or any other  federal or state  governmental
authority  of any stop order  suspending  the  effectiveness  of a  registration
statement or the initiation of any proceedings for that purpose and (iii) of the
receipt by the Company of any notification with respect to the suspension of the
qualification  or



<PAGE>


exemption from  qualification  of any of the Registrable  Securities for sale in
any  jurisdiction  or the  initiation or  threatening of any proceeding for such
purpose.

            (d) Make every  reasonable  effort to obtain the  withdrawal  of any
order suspending the  effectiveness of the Shelf  Registration  Statement at the
earliest possible time.

         7.4  Furnish  Information.  It shall be a  condition  precedent  to the
obligations  of the Company to take any action  pursuant to Section 7.2 that the
Holder  shall  furnish  to  the  Company  such  information  regarding  it,  the
Registrable  Securities  held by it, and the intended  method of  disposition of
such  securities as shall be required to timely effect the  registration  of its
Registrable Securities.

         7.5  Indemnification.  In the  event  any  Registrable  Securities  are
included in a registration statement under this Agreement:

            (a) By Cellegy.  To the extent  permitted  by law,  the Company will
indemnify  and hold  harmless the Holder,  officers and directors of the Holder,
each entity that may be deemed to be an "underwriter"  within the meaning of the
Act in connection  with the sale of any Registrable  Securities  pursuant to the
Shelf Registration Statement and each person, if any, who controls the Holder or
any such  underwriter  within the meaning of the Act or the  Exchange  Act (such
persons and entities referred to as "Holder Indemnified  Parties"),  against any
losses, expenses,  damages or liabilities to which they may become subject under
the Act, the Exchange Act or other  federal or state law (a "Loss"),  insofar as
such Losses (or actions in respect  thereof)  arise out of any claim,  action or
proceeding  brought  by a third  party  arising  out of or based upon any of the
following statements, omissions or violations (collectively a "Violation"):

     (i)          any untrue statement or alleged untrue statement of a material
fact contained in a registration statement filed pursuant to this Section 7;

     (ii)         the  omission or alleged  omission to state in a  registration
statement filed pursuant to this Section 7 a material fact required to be stated
therein, or necessary to make the statements therein not misleading; or

     (iii)        any violation or alleged  violation by the Company of the Act,
the Exchange Act, any federal or state  securities law or any rule or regulation
promulgated  under the Act, the Exchange Act or any federal or state  securities
law in connection with the offering covered by such registration statement;

and the Company will  reimburse each Holder  Indemnified  Party for any legal or
other  expenses  reasonably  incurred by them, as incurred,  in connection  with
investigating  or defending  any such  Violation;  provided,  however,  that the
indemnity agreement contained in this subsection shall not apply to amounts paid
in  settlement  of any such Loss,  if such  settlement  is effected  without the
consent of the Company, nor shall the Company be liable in any such case for any
such Loss to the extent that it arises out of or is based upon a Violation which
occurs in reliance upon and in  conformity  with written  information  furnished
expressly for use in connection with such registration by the Holder Indemnified
Party; and provided  further,  that the Company will not be liable for the legal
fees and expenses of more than one counsel to the Holder Indemnified Parties.

            (b) By the Holder.  To the extent permitted by law, each Holder will
indemnify  and hold  harmless the Company,  each of its  directors,  each of its
officers who have signed the registration  statement,  and each person,  if any,
who  controls  the  Company  within  the  meaning of the Act (such  persons  and
entities  referred to as "Company  Indemnified  Parties")  against any Losses to
which such Company  Indemnified  Parties may become  subject  under the Act, the
Exchange Act or other  federal or state law,  insofar as such Losses (or actions
in respect  thereto) arise out of or are based upon any Violation,  in each case
to the extent (and only to the extent)  that such  Violation  occurs in reliance
upon  and in  conformity  with  written  information  furnished  by  the  Holder
expressly  for use in  connection  with such  registration;  and the Holder will
reimburse  any  legal or other  expenses  reasonably  incurred  by such  Company
Indemnified  Parties in  connection  with  investigating  or defending  any such
Violation;  provided,  however,  that the indemnity  agreement contained in this
subsection  shall not apply



<PAGE>


to amounts paid in  settlement  of any such Loss if such  settlement is effected
without the consent of the Holder;  provided further,  that the Holder shall not
be liable  for the legal  fees and  expenses  of more  than one  counsel  to the
Company  Indemnified  Parties;  and  provided  further,  that the total  amounts
payable in  indemnity  by the Holder  under  this  subsection  in respect of any
Violation  shall not  exceed  the net  proceeds  received  by the  Holder in the
registered offering out of which such Violation arises.

            (c) Notice.  Promptly  after receipt by an  indemnified  party under
this  Section  of  notice  of the  commencement  of any  action  (including  any
governmental   action),   such   indemnified   party   will,   if  a  claim  for
indemnification  in respect thereof is to be made against any indemnifying party
under this Section,  deliver to the  indemnifying  party a written notice of the
commencement of such an action and the  indemnifying  party shall have the right
to participate in, and, to the extent the indemnifying party so desires, jointly
with any other  indemnifying  party  similarly  noticed,  to assume the  defense
thereof with counsel elected by the indemnifying party and reasonably acceptable
for the indemnified party  materially;  provided,  however,  that an indemnified
party shall have the right to retain its own counsel, with the fees and expenses
to be paid by the indemnifying  party, if the indemnified party has been advised
in writing by  counsel  that  representation  of such  indemnified  party by the
counsel retained by the indemnifying  party would be inappropriate due to actual
conflict  of  interests  between  such  indemnified  party and any  other  party
represented by such counsel in such  proceeding.  The failure to deliver written
notice to the indemnifying party within a reasonable time of the commencement of
any such action  shall  relieve  such  indemnifying  party of  liability  to the
indemnified  party  under this  Section to the extent such delay  caused  actual
prejudice  to the  indemnified  party,  but the  omission so to deliver  written
notice to the  indemnifying  party will not relieve it of any liability  that it
may have to any indemnified party otherwise than under this Section.

            (d) Defect Eliminated in Final Prospectus.  The foregoing  indemnity
agreements  of the  Company and the Holder are  subject to the  condition  that,
insofar as they relate to any  Violation  made in a preliminary  prospectus  but
eliminated or remedied in the amended  prospectus on file with the Commission at
the time the  registration  statement  in question  becomes  effective or in the
amended  prospectus  filed with the  Commission  pursuant  to Rule 424(b) of the
Commission (the "Final  Prospectus"),  such indemnity agreements shall not inure
to the benefit of any person if a copy of the Final  Prospectus was furnished in
a timely  manner to the  indemnified  party and was not  furnished to the person
asserting  the  loss,  liability,  claim or  damage at or prior to the time such
action is required by the Act.

            (e)  Contribution.  In order  to  provide  for  just  and  equitable
contribution  to joint liability under the Act in any case in which either (i) a
Holder  Indemnified  Party  makes a claim for  indemnification  pursuant to this
Section but it is  judicially  determined  (by the entry of a final  judgment or
decree by a court of competent jurisdiction and the expiration of time to appeal
or the denial of the last right of appeal) that such  indemnification may not be
enforced in such case  notwithstanding  the fact that this Section  provides for
indemnification in such case, or (ii) contribution under the Act may be required
on the  part  of  the  Holder  Indemnified  Party  in  circumstances  for  which
indemnification  is provided under this Section then, and in each such case, the
Company and the Holder  Indemnified  Parties will  contribute  to the  aggregate
Losses  to  which  they may be  subject  (after  contribution  from  others)  in
proportion  to their  relative  fault  as  determined  by a court  of  competent
jurisdiction;  provided however,  that in no event, except in instances of fraud
by the  Holder  in  which  there is no  limitation,  (i)  shall  the  Holder  be
responsible  for more than the portion  represented by the  percentage  that the
public  offering price of its Registrable  Securities  offered by and sold under
the registration  statement bears to the public offering price of all securities
offered by and sold under such registration  statement and (ii) shall the Holder
be required to contribute  any amount in excess of the public  offering price of
all such Registrable  Securities offered and sold by the Holder pursuant to such
registration  statement;  and in any  event,  no  person  or  entity  guilty  of
fraudulent  misrepresentation  (within the meaning of Section  11(f) of the Act)
will be entitled to contribution from any person or entity who was not guilty of
such fraudulent misrepresentation.

            (f) Survival.  The  obligations  of the Company and the Holder under
this  Section  shall  survive the  completion  of any  offering  of  Registrable
Securities in a registration statement, and otherwise.



<PAGE>


         7.6 Rule 144 Reporting. With a view to making available the benefits of
certain rules and regulations of the Commission which may at any time permit the
sale of the Registrable  Securities to the public without  registration,  for so
long as the Holder owns any Registrable Securities, the Company agrees to:

            (a) Make and keep adequate, current public information available, as
those terms are understood and defined in Rule 144 under the Act, at all times;

            (b) File with the  Commission  in a timely  manner all  reports  and
other documents required of the Company under the Exchange Act; and

            (c) So  long as the  Holder  owns  any  Registrable  Securities,  to
furnish to the Holder forthwith upon request a written  statement by the Company
as to its compliance with the reporting requirements of said Rule 144, a copy of
the most  recent  annual or  quarterly  report of the  Company,  and such  other
reports and  documents  of the Company as the Holder may  reasonably  request in
availing itself of any rule or regulation of the Commission allowing a Holder to
sell any such securities without registration.

         7.7  Termination  of Cellegy's  Obligations.  The Company shall have no
obligations  to  register,  or  maintain,  a  registration  statement  governing
Registrable  Securities,  (i) if all Registrable Securities have been registered
and sold pursuant to registrations effected pursuant to this Agreement,  or (ii)
with  respect  to any  particular  Holder,  at  such  time  as  all  Registrable
Securities  held by such Holder may be sold within a three  month  period  under
Rule 144, as it may be amended from time to time,  including  but not limited to
amendments  that reduce that period of time that  securities must be held before
such securities may be sold pursuant to such rule.

         7.8 Piggyback Registrations. (a) The Company shall use its best efforts
to notify all Holders of Registrable  Securities in writing at least twenty (20)
days before  filing any  registration  statement  under the Act for  purposes of
effecting  a  public  offering  by the  Company  of  securities  of the  Company
(excluding  registration  statements  relating to any employee benefit plan or a
corporate  reorganization)  and will afford each such Holder an  opportunity  to
include  in such  registration  statement  all or any  part  of the  Registrable
Securities then held by such Holder. Each Holder desiring to include in any such
registration  statement all or any part of the  Registrable  Securities  held by
such Holder  shall,  within ten (10) days after  receipt of the  above-described
notice from the  Company,  so notify the Company in writing,  and in such notice
shall  inform the Company of the number of  Registrable  Securities  such Holder
wishes to include in such  registration  statement.  If a Holder  decides not to
include all of its  Registrable  Securities in any such  registration  statement
filed by the Company,  such Holder shall nevertheless continue to have the right
to include any Registrable  Securities in any subsequent  registration statement
or  registration  statements  as may be filed by the  Company  with  respect  to
offerings of its securities, all upon the terms and conditions set forth herein.
The Holders' rights to include any Registrable  Securities in any offering under
this  Section  are  subject  in all  events  to  the  ability  of  the  managing
underwriter for such offering (or, if there is no underwriter, then the Company)
to exclude some or all of the Registrable  Securities requested to be registered
on the basis of a good faith  determination  that  inclusion of such  securities
might adversely affect the success of the offering or otherwise adversely affect
the  Company.  Any such  exclusion  shall be pro rata among all Holders who have
requested to sell Registrable Securities in such registration.

            (b)  Underwriting.  If a  registration  statement  under  which  the
Company gives notice under this Section is for an  underwritten  offering,  then
the  Company  shall so advise the  Holders of  Registrable  Securities.  In such
event, the right of any such Holder's Registrable Securities to be included in a
registration  pursuant to this Section shall be  conditioned  upon such Holder's
participation   in  such   underwriting  and  the  inclusion  of  such  Holder's
Registrable  Securities in the underwriting to the extent provided  herein.  All
Holders  proposing  to  distribute  their  Registrable  Securities  through such
underwriting  shall enter into an underwriting  agreement in customary form with
the managing  underwriter or  underwriters  selected for such  underwriting  and
shall  furnish  such  information  and  documents as the Company or the managing
underwriter or underwriters may reasonably  request.  Notwithstanding  any other
provision of this Agreement,  if the managing  underwriter  determine(s) in good
faith that marketing  factors require a limitation of the number of shares to be
underwritten,   then  the  managing   underwriter(s)  may  exclude   Registrable
Securities  from the  registration  and the  underwriting,  pro rata  among  all
Holders who have requested to sell Registrable  Securities in such registration.
If



<PAGE>


any Holder  disapproves of the terms of any such  underwriting,  such Holder may
elect  to  withdraw   therefrom  by  written  notice  to  the  Company  and  the
underwriter,  delivered at least ten (10)  business  days prior to the effective
date of the  registration  statement.  Any  Registrable  Securities  excluded or
withdrawn  from such  underwriting  shall be  excluded  and  withdrawn  from the
registration.

            (c) Expenses.  The Holders shall be  responsible  for their pro rata
share  of  registration  fees  and  underwriters'  and  brokers'  discounts  and
commissions   relating   to  any   Registrable   Securities   included  in  such
registration.  Other registration expenses (such as legal and accounting fees of
counsel to the Company,  printing fees, road show expenses,  and the like) shall
be shall be borne by the Company.

            (d) Number of Piggyback  Registrations.  The piggyback  registration
rights  granted to the Holders under this Section shall apply to the first three
registrations filed by the Company after the Closing.

     8.  ASSIGNMENT.  Notwithstanding  anything  herein  to  the  contrary,  the
registration rights of the Holder under Section 7 hereof may be assigned only to
a party who acquires  from the Holder at least 33% of the shares of Common Stock
that constituted the original number of Registrable  Securities  acquired by the
original  Holder of the  Registrable  Securities  or, if less,  at least 100,000
shares of  Registrable  Securities  (as such  number may be  adjusted to reflect
subdivisions,  combinations  and stock dividends of the Company's Common Stock),
(such party is  referred to as a  "Assignee");  provided,  however,  that (w) no
party may be assigned  any of the  foregoing  rights  until the Company is given
written notice by the assigning party at the time of such assignment stating the
name and address of the Assignee and  identifying  the securities of the Company
as to which  the  rights  in  question  are  being  assigned;  (x) that any such
Assignee  shall  receive  such  assigned  rights  subject  to all the  terms and
conditions of this Agreement;  and (y) no such  assignment or assignments  shall
increase the obligations of the Company hereunder.

     9. MISCELLANEOUS.

     9.1 Survival of Warranties.  The representations,  warranties and covenants
of the Company and the Investors contained in or made pursuant to this Agreement
shall survive the  execution and delivery of this  Agreement and the Closing and
shall in no way be affected by any  investigation  of the subject matter thereof
made by or on behalf of the Investors, their counsel or the Company, as the case
may be.

     9.2  Successors  and Assigns.  The terms and  conditions of this  Agreement
shall inure to the benefit of and be binding upon the respective  successors and
assigns of the parties.

     9.3  Governing  Law;  Consent  to  Jurisdiction.  This  Agreement  shall be
governed by and construed  under the internal laws of the State of California as
applied  to  agreements  among  California  residents  entered  into  and  to be
performed  entirely  within  California,  without  reference  to  principles  of
conflict of laws or choice of laws.  The parties  hereby submit to the exclusive
jurisdiction  of the state  and  federal  courts  located  in San Mateo  County,
California,  for  purposes  of any action  arising  out of or  relating  to this
Agreement or the  transactions  contemplated  hereby,  and agree that service of
process  in such  action  may be  made in the  manner  provided  herein  for the
delivery of notices.

     9.4   Counterparts.   This  Agreement  may  be  executed  in  two  or  more
counterparts,  each of  which  shall be  deemed  an  original,  but all of which
together shall constitute one and the same instrument.

     9.5 Headings. The headings and captions used in this Agreement are used for
convenience only and are not to be considered in construing or interpreting this
Agreement.  All references in this Agreement to sections,  paragraphs,  exhibits
and schedules shall, unless otherwise provided, refer to sections and paragraphs
hereof and exhibits and schedules  attached  hereto,  all of which  exhibits and
schedules are incorporated herein by this reference.



<PAGE>


     9.6 Notices.  Unless otherwise  provided,  any notice required or permitted
under this Agreement  shall be given in writing and shall be deemed  effectively
given upon personal delivery to the party to be notified,  by telecopier or upon
deposit with the United States Post Office,  by  registered  or certified  mail,
postage  prepaid  and  addressed  to the party to be notified in the case of the
Company,  at  1065  E.  Hillsdale  Blvd.,  Foster  City,  CA  94404,  attention:
President,  with a copy to C.  Kevin  Kelso,  Fenwick & West LLP,  Two Palo Alto
Square, Palo Alto,  California 94306, or in the case of Investor,  at the record
address for such Investor as reflected on the books of the Company,  with a copy
to: William Greason,  Chadbourne & Parke LLP, 30 Rockefeller Plaza, New York, NY
10112,  or at such other  address as any party may  designate by giving ten (10)
days  advance  written  notice  to the  other  party.  Notices  shall be  deemed
delivered  upon  delivery  if  personally  delivered,  one  business  day  after
transmission with  confirmation of receipt if sent by telecopier,  or three days
after deposit in the mails if mailed.

     9.7 No Finder's Fees. Each party  represents that it neither is nor will be
obligated for any finder's or broker's fee or commission in connection with this
transaction.  Each Investor agrees to indemnify and to hold harmless the Company
from any  liability  for any  commission  or  compensation  in the  nature  of a
finder's or broker's fee (and any asserted  liability) for which the Investor or
any of its officers, partners, employees, or representatives is responsible. The
Company  agrees  to  indemnify  and to hold  harmless  each  Investor  from  any
liability  for any  commission  or  compensation  in the nature of a finder's or
broker's  fee (and any asserted  liability)  for which the Company or any of its
officers, employees or representatives is responsible.

     9.8 Costs, Expenses. Each party's costs in connection with the preparation,
execution  delivery  and  performance  of  this  Agreement   (including  without
limitation legal fees) shall be borne by that party.

     9.9 Amendments  and Waivers.  Any term of this Agreement may be amended and
the observance of any term of this Agreement may be waived (either  generally or
in a particular instance and either  retroactively or prospectively),  only with
the  written  consent of the  Company  and  Investors  holding a majority of the
Purchased  Shares  purchased  hereunder.  Any  amendment  or waiver  effected in
accordance  with this Section shall be binding upon each holder of any Purchased
Shares at the time  outstanding  (even if such  Investor or other holder did not
vote with respect to, or voted against,  such amendment or waiver),  each future
holder of such securities,  and the Company.  The Investors  acknowledge that by
virtue of this provision,  holders of a majority of the Purchase Shares may bind
other  holders to amendment or waivers that such other holders may have voted to
oppose.

     9.10 Severability.  If one or more provisions of this Agreement are held to
be invalid,  illegal or unenforceable  under  applicable law, such  provision(s)
shall be excluded from this Agreement and the balance of the Agreement  shall be
interpreted as if such provision(s) were so excluded and shall be enforceable in
accordance with its terms.

     9.11  Entire  Agreement.  This  Agreement,  together  with any  exhibits or
schedules  hereto,  constitutes the entire  agreement and  understanding  of the
parties with respect to the subject  matter  hereof and  supersedes  any and all
prior  negotiations,   correspondence,   agreements,  understandings  duties  or
obligations between the parties with respect to the subject matter hereof.

     9.12 Further  Assurances.  From and after the date of this Agreement,  upon
the request of an Investor or the Company,  the Company and the Investors  shall
execute and deliver  such  instruments,  documents  or other  writings as may be
reasonably  necessary or  desirable  to confirm and carry out and to  effectuate
fully the intent and purposes of this Agreement.

                [Remainder of this page intentionally left blank]



<PAGE>


                           COUNTERPART SIGNATURE PAGE

                         COMMON STOCK PURCHASE AGREEMENT


     IN WITNESS  WHEREOF,  the parties  hereto have  executed  this Common Stock
Purchase Agreement as of the date first above written.

THE COMPANY:                                 INVESTOR:

Cellegy Pharmaceuticals, Inc.,

a California corporation

By:________________________________          By:________________________________

Title:_____________________________          Title:_____________________________






                                                                     EXHIBIT 5.1

                               September 19, 1997


Cellegy Pharmaceuticals, Inc.
1065 E. Hillsdale Blvd.
Suite 418
Foster City, CA  94404

Gentlemen/Ladies:

     At your request,  we have examined the  Registration  Statement on Form S-3
(the  "Registration  Statement")  to be filed by you  with  the  Securities  and
Exchange  Commission  (the  "Commission")  on or  about  September  19,  1997 in
connection with the  registration  under the Securities Act of 1933, as amended,
of an  aggregate  of  1,999,887  shares  of your  Common  Stock  (the  "Stock"),
including  1,974,887  shares  that are  presently  issued and  outstanding  (the
"Outstanding Shares") and 25,000 shares (the "Warrant Shares") that are issuable
upon the exercise of a warrant (the  "Warrant") and all of which will be sold by
the  selling   shareholders   named  in  the  Prospectus   included  within  the
Registration Statement (the "Selling Shareholders").

     In rendering this opinion, we have examined the following:

     (1) the Registration Statement,  together with the Exhibits filed as a part
         thereof;

     (2) your  registration  statement on Form 8-A filed with the  Commission in
         connection with the Company's initial public offering in August 1995;

     (3) the Prospectus prepared in connection with the Registration Statement;

     (4) the minutes of meetings and actions by written  consent of the Board of
         Directors  that are  contained in your minute books and that are in our
         possession, that relate to issuance of the Stock and the Warrant;

     (5) the stock  purchase  and other  agreements,  other than those  filed as
         exhibits to the Registration  Statement,  pursuant to which the Selling
         Shareholders  acquired  the Stock and the Warrant as  described  in the
         Registration Statement; and

     (6) a  Management  Certificate  addressed  to us and  dated  of  even  date
         herewith executed by the Company  containing  certain factual and other
         representations.

     In our  examination  of  documents  for purposes of this  opinion,  we have
assumed,  and express no opinion as to, the  genuineness  of all  signatures  on
original  documents,  the  authenticity  of  all  documents  submitted  to us as
originals,  the  conformity  to  originals of all  documents  submitted to us as
copies,  the legal capacity of all natural persons  executing the same, the lack
of any  undisclosed  terminations,  modifications,  waivers or amendments to any
documents  reviewed by us and the due  execution  and delivery of all  documents
where due execution and delivery are prerequisites to the effectiveness thereof.

     As to matters of fact relevant to this opinion,  we have relied solely upon
our examination of the documents  referred to above and have assumed the current
accuracy and  completeness of the information  obtained from records included in
the documents  referred to above. We have made no independent  investigation  or
other attempt to verify the accuracy of any of such  information or to determine
the existence or non-existence of any other factual matters; however, we are not
aware of any facts  that would lead us to  believe  that the  opinion  expressed
herein is not accurate.

         In  rendering  any  opinion  that the shares of Stock are, or will when
issued  be,  "fully  paid," we have  assumed  that such  shares  were  issued in
accordance  with the terms of the plans or agreements  governing the issuance of
such shares,  and that the Company received full  consideration for the issuance
of such  shares,  provided  for in the plans  and  agreements  relating  to such
shares, and we have relied solely, without independent  investigation,  upon the
representation  of the  Company  to that  effect in the  Management  Certificate
referred to above.

         Based upon the foregoing, it is our opinion that the Outstanding Shares
to be sold by the Selling  Shareholders  pursuant to the Registration  Statement
are, and the Warrant Shares,  when issued upon exercise of the Warrant and fully
paid for as provided in the Warrant will be, legally issued,  and  nonassessable
and, to our knowledge, fully paid.


<PAGE>


     We  consent to the use of this  opinion  as an exhibit to the  Registration
Statement  and  further  consent  to  all  references  to  us,  if  any,  in the
Registration  Statement,  the  Prospectus  constituting  a part  thereof and any
amendments thereto.

     This opinion speaks only as of its date and is intended solely for your use
as an exhibit to the Registration Statement for the purpose of the above sale of
the Stock and is not to be relied upon for any other purpose.

                                             Very truly yours,


                                             FENWICK & WEST LLP


                                             By:  /s/  Fenwick & West LLP
                                                -------------------------






                                                                    EXHIBIT 23.1

               CONSENT OF ERNST & YOUNG LLP, INDEPENDENT AUDITORS

     We consent to the reference to our firm under the caption  "Experts" in the
Registration   Statement  on  Form  S-3  and  related   Prospectus   of  Cellegy
Pharmaceuticals,  Inc. for the  registration  of 1,999,887  shares of its common
stock and to the incorporation by reference therein of our report dated February
5, 1997 with respect to the  financial  statements  of Cellegy  Pharmaceuticals,
Inc.  included in its Annual  Report on Form 10-KSB for the year ended  December
31, 1996, filed with the Securities and Exchange Commission.

                                                /s/ ERNST & YOUNG LLP

San Jose, California
September 19, 1997




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