VIMRX PHARMACEUTICALS INC
S-3, 1997-04-18
PHARMACEUTICAL PREPARATIONS
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     As filed with the Securities and Exchange Commission on April 18, 1997

                                                           Registration No. 333-








                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                   ----------

                                    FORM S-3
                             REGISTRATION STATEMENT
                                      UNDER
                           THE SECURITIES ACT OF 1933

                           VIMRx PHARMACEUTICALS INC.
             (Exact name of registrant as specified in its charter)

               Delaware                                   06-1192468
    (State or other jurisdiction of                    (I.R.S. Employer
    incorporation or organization)                    Identification No.)

                              2751 Centerville Road
                                    Suite 210
                           Wilmington, Delaware 19808
                                 (203) 329-0811
          (Address, including zip code, and telephone number, including
             area code, of Registrant's principal executive offices)

                               SIDNEY TODRES, ESQ.
                          Epstein Becker & Green, P.C.
                                 250 Park Avenue
                            New York, New York 10177
                                 (212) 351-4735

            (Name, address, including zip code, and telephone number,
                   including area code, of agent for service)

                  Approximate date of proposed commencement of
                sale to the public: As soon as practicable after
                 this Registration Statement becomes effective.

         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>
<CAPTION>

                         CALCULATION OF REGISTRATION FEE
============================== ------------------------ -------------------------- ------------------------- -----------------------
  Title of Securities Being    Amount Being Registered          Proposed                   Proposed                Amount of
         Registered                                              Maximum                   Maximum                Registration
                                                             Offering Price               Aggregate                   Fee
                                                              Per Share(1)            Offering Price(1)
<S>                            <C>                     <C>                           <C>                      <C>    
- ------------------------------ ------------------------ -------------------------- ------------------------- -----------------------
Common Stock, par                     5,999,991                   $2.50                  $14,999,978                 $4,545
  value $.001 per share...
- ------------------------------ ------------------------ -------------------------- ------------------------- -----------------------
Warrants to purchase
  Common Stock      . . .             2,399,993                   $2.50                   $5,999,983                 $1,818
Common Stock, par
  value $.001 per share
============================== ======================== ========================== ========================= =======================
       Total..............                                                                                           $6,363
============================== ======================== ========================== ========================= =======================
</TABLE>

(1) Estimated  solely for the purpose of calculating the  registration fee based
on the  average  of the high and low  sales  prices of the  Common  Stock on The
Nasdaq Stock Market on April 11, 1997, pursuant to Rule 457(c).
                                                           ---------------

    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 this  Registration  Statement  shall become
effective on such date as the Commission,  acting pursuant to said Section 8(a),
may determine.


<PAGE>



<PAGE>


                                                           

                   Subject to Completion, Dated April 18, 1997


PROSPECTUS
- ----------

                           VIMRx PHARMACEUTICALS INC.

                        5,999,991 Shares of Common Stock
                                ($.001 par value)
                   2,399,993 Warrants to Purchase Common Stock
                        2,399,993 Shares of Common Stock
                                ($.001 par value)
                                -----------------


              The  5,999,991  shares of Common Stock (the  "Placement  Shares"),
2,399,993  warrants (the "Warrants") and/or the 2,399,993 shares of Common Stock
issuable to the holders of the Warrants  upon  exercise  thereof  (the  "Warrant
Shares" and,  together  with the Placement  Shares,  the "Shares") to which this
Prospectus relates may be sold by the selling  securityholders named herein (the
"Selling Securityholders") from time to time in transactions on The Nasdaq Stock
Market at prices then  prevailing  or in negotiated  transactions  at negotiated
prices, or a combination  thereof.  See "Selling  Securityholders"  and "Plan of
Distribution." The Warrants entitle the holders thereof to purchase an aggregate
of 2,399,993  shares of Common  Stock at $1.50 per share  through June 20, 2006,
the expiration date of the Warrants. See "Description of Securities - Warrants."
The  Company  will  not  receive  any  proceeds  from  the  sale by the  Selling
Securityholders  of the Shares and/or the Warrants.  The cost of registering the
Shares and the Warrants under the Securities Act will be paid by the Company.

              The Common Stock is traded on The Nasdaq Stock  Market's  National
Market under the symbol "VMRX". On April 17, 1997, the closing sale price of the
Common  Stock,  as reported by The Nasdaq  Stock  Market,  was $2.375 per share.
Prior to this  offering,  there  has been no  public  market  for the  Warrants;
application  is being made for the listing of the  Warrants on The Nasdaq  Stock
Market's SmallCap Market.

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

            THE SHARES OFFERED HEREBY INVOLVE A HIGH DEGREE OF RISK.
                               SEE "RISK FACTORS."

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

                   THESE SECURITIES HAVE NOT BEEN APPROVED OR
                   DISAPPROVED BY THE SECURITIES AND EXCHANGE
                  COMMISSION NOR HAS THE 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 , 1997.


<PAGE>


              No dealer,  salesman,  or any other person has been  authorized to
give any information or to make any  representations  other than those contained
in this  Prospectus in connection  with the offering  herein  contained  and, if
given or made, such  information or  representations  must not be relied upon as
having  been  authorized  by the Company or the  Selling  Securityholders.  This
Prospectus  does not constitute an offer to sell, or a solicitation  of an offer
to buy, the securities  offered hereby in any jurisdiction to any person to whom
it is unlawful to make an offer or  solicitation.  Neither the  delivery of this
Prospectus nor any sale made hereunder shall, under any circumstances, create an
implication  that there has been no change in the facts  herein set forth  since
the date hereof.







                              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 material may be
inspected and copied at the regional  offices of the Commission at 7 World Trade
Center,  Suite 1300, New York, New York 10048, and at Citicorp Center,  500 West
Madison Street, Suite 1400, Chicago Illinois 60661-2511.  This material may also
be  inspected  and copied at and,  upon  written  request,  copies  obtained  at
prescribed  rates from, the Public  Reference  Section of the Commission at Room
1024  at  its  principal  office,  Judiciary  Plaza,  450  Fifth  Street,  N.W.,
Washington,  D.C.  20549.  This material may also be accessed  through the EDGAR
terminals in the Commission's Public Reference Rooms in Washington.  Chicago and
New York or through the World Wide Web at http://www.sec.gov.


                       DOCUMENTS INCORPORATED BY REFERENCE


              The  Company's  (i) Annual Report on Form 10-K for the fiscal year
ended December 31, 1996,  and (ii) Current  Reports on Form 8-K filed on January
4, 1997 (as amended on Form 8-K/A filed on March 10,  1997) and March 24,  1997,
are incorporated in and made a constituent part of this Prospectus by reference.
All  reports  and proxy  statements  filed by the  Company  with the  Commission
pursuant to Sections  13(a),  13(c),  14 and 15(d) of the Exchange Act after the
date of this  Prospectus  and prior to termination of the offering of the Shares
and the  Warrants  to which this  Prospectus  relates  shall  likewise be deemed
incorporated  herein and made a constituent  part hereof by reference from their
respective dates of filing.

              Any statement contained in a document incorporated or deemed to be
incorporated  by reference  herein shall be deemed to be modified or  superseded
for purposes of this Prospectus to the extent that a statement  contained herein
or in any  subsequently  filed document that is also  incorporated  by reference
herein  modifies or  replaces  such  statement.  Any  statements  so modified or
superseded  shall  not be  deemed,  except  as so  modified  or  superseded,  to
constitute a part of this Prospectus.





              Upon oral or written  request,  the Company will  provide  without
charge a copy of any document  incorporated  in this  Prospectus  by  reference,
exclusive  of exhibits,  to each person to whom this  Prospectus  is  delivered.
Requests for such documents should be directed to the Chief Financial Officer of
the Company,  2751  Centerville  Road,  Suite 210,  Wilmington,  Delaware  19808
(telephone no. 302-998-1734).


                                       2
<PAGE>



                                   THE COMPANY


              VIMRx  Pharmaceuticals  Inc.  ("VIMRx"  or  the  "Company")  is  a
development  stage company  focused on  identifying,  evaluating,  acquiring and
commercializing  scientific  technologies  to be  developed  by the  Company  in
partnership  with  others.  Therapeutic  and  related  products  from  synthetic
hypericin,  principally  for the  treatment  of viral and  retroviral  diseases,
currently are under development.  The Company also owns approximately 68% of the
capital stock of Innovir  Laboratories,  Inc.  ("Innovir",  Nasdaq: INVR) which,
together with its  subsidiaries,  is engaged in the research and  development of
Oligozymes,  a new class of biopharmaceutical agents for the treatment of a wide
array of human diseases.  To further  diversify its potential  product line, the
Company has entered into two research agreements with Columbia  University,  one
relating to products  developed by the Columbia  Genomic Center,  and the second
relating to a cardiovascular  anticoagulant compound, and is actively seeking to
acquire rights to emerging innovative technologies.

Hypericin

              The  Company's  principal  product,  VIMRxyn(R),  is  comprised of
chemically  synthesized  hypericin and, in laboratory  tests,  has inhibited the
infection  of  normal  cells  by  targeted  viruses.  Hypericin  is an  aromatic
polycyclic dione found in the stem and petals of the common Saint John's wort, a
plant  which has been used as a folk  remedy  since the Middle  Ages.  Hypericin
plant extracts continue to be used as lay treatments for various disorders.  The
Company  is  investigating  utilizing  VIMRxyn  as a  treatment  for  viral  and
retroviral diseases,  including the human immune deficiency virus ("HIV"), which
is the retrovirus  responsible for Acquired Immune Deficiency Syndrome ("AIDS"),
and also is investigating utilizing VIMRxyn as a treatment for hepatitis C, as a
therapeutic for brain cancer  (glioma),  and as a means of inactivating  HIV and
other lipid-enveloped  viruses in blood collected for transfusions.  The Company
has a  worldwide  exclusive  license  to  commercialize  and  exploit  synthetic
hypericin  compounds for enumerated  purposes from New York  University and Yeda
Research  and  Development  Co.,  Ltd.,  an Israeli  corporation  engaged in the
commercial  exploitation of scientific  developments by scientists at a Weizmann
Institute of Science in Israel (New York University and YEDA, collectively,  the
"Hypericin Licensors").

              The Company has not  established  the efficacy of VIMRxyn in human
clinical  trials for the treatment of AIDS. In 1994, the Company  completed data
analysis of Phase  I/Phase II human  clinical  trials  sponsored by the National
Institutes  of Health  to  determine  the  maximum  tolerated  dose and any side
effects of VIMRxyn as a treatment for AIDS. From the data collected, the results
showed a favorable  pharmacological profile with no major organ or hematological
toxicity,  and with skin  photosensitivity  as the  primary  dose-limiting  side
effect. All of the patients enrolled in the trials experienced varying levels of
skin  photosensitivity  and several experienced  non-life threatening acute skin
photosensitivity which required medical treatment.

              Between  January and September  1996,  human clinical  trials were
conducted  in  Thailand  by a Dutch  company  retained  by the  Company  under a
protocol  submitted to the U.S. Food and Drug  Administration  (the "FDA") under
the  Company's  existing  investigational  new drug  application  to  identify a
potentially   efficacious   lower  dose  of   VIMRxyn,   having   minimal   skin
photosensitivity,   as  a  treatment  for  AIDS.  The  dosage  administered  was
well-tolerated  by the patients and did not result in untoward  toxicity or skin
photosensitivity  and, based on the measurement criteria used, produced evidence
of anti-HIV activity.  The Company is currently  conducting in vitro interaction
studies  to  determine  how  VIMRxyn  may be  used  in  combination  with  other
anti-retroviral agents.

              The Company is  continuing  to explore  developing  hypericin as a
means  of   inactivating   lipid-enveloped   viruses  in  blood   collected  for
transfusions and is conducting initial clinical studies to evaluate  hypericin's
potential  antiviral  effect with respect to hepatitis C virus and its potential
anticancer  activity in recurrent  malignant  brain glioma.  The Company is also
conducting  preclinical  laboratory  studies to evaluate  the  effectiveness  of
VIMRxyn  against a variety of human cell lines,  including  non-Hodgkins  B-cell
lymphoma, endometrial carcinoma and cutaneous T-cell lymphoma.




                                       3
<PAGE>



Oligozymes; Affiliation with Innovir

              In December  1996,  the  Company  acquired  an  approximately  68%
ownership interest in Innovir,  a biotechnology  company engaged in the research
and  development  of  a  new  class  of  biopharmaceutical  therapeutic  agents,
collectively termed  "Oligozymes" by Innovir,  for the treatment of a wide array
of human diseases. An Oligozyme is a chemically modified oligomer,  not composed
of RNA,  that  participates  in an  essential  manner in the  sequence-specific,
catalytic cleavage of a targeted RNA molecule. The management of the Company and
Innovir believe that  therapeutic  agents based upon Innovir's  proprietary core
technologies  have  the  potential  to be  cost-effective  and  highly  specific
therapeutics for designated  disease targets as well as to identify and validate
targets  for  drug  discovery.   VIMRx's   management  also  believes  that  its
collaboration with Columbia University may provide synergistic opportunities for
the Oligozyme  technology  owned by Innovir.  See " - Research  Agreements  with
Columbia University."

              One  of  Innovir's  two  core  technologies,  its  External  Guide
Sequence ("EGS") Oligozyme  technology,  directs a naturally  occurring cellular
ribozyme  (RNase P) to  disease-causing  RNA so that the RNase P will cleave the
disease-causing  RNA and  render  it  inactive.  An EGS  Oligozyme  is a  small,
chemically-modified  oligonucleotide segment that binds to a disease-causing RNA
to create a  structure  resembling  a type of RNA which is  cleaved  by RNase P,
which thereby  destroys the  disease-causing  RNA  molecules  before they create
disease-causing  proteins.  Innovir's EGS Oligozyme technology, to which Innovir
has an exclusive worldwide license for  commercialization  from Yale University,
is based upon Nobel  Prize-winning  research by Sidney Altman,  Ph.D.,  Sterling
Professor  of  Biology at Yale  University,  a  consultant  to and member of the
Science  Advisory  Board of  Innovir.  Innovir is  investigating  the use of EGS
Oligozymes  as a  therapeutic  to combat  target viral and other  diseases,  and
currently  is focussing on  hepatitis  B,  hepatitis  C, cancer,  psoriasis  and
bacterial infections caused by drug-resistant microorganisms.

              Innovir's  second  core  technology  is  its  RILON(TM)  Oligozyme
technology,  which it acquired  through its acquisition of VIMRx Holdings,  Ltd.
("Holdings") from the Company in December 1996. RILON Oligozymes are composed of
certain types of chemically modified oligoribonucleotides, which are proprietary
to Innovir  through  Holdings'  worldwide  exclusive  license  from the European
Molecular  Biology  Laboratory  and patents held by Innovir and Holdings.  RILON
Oligozymes consist of two classes:  type 1 RILON Oligozymes,  which cut specific
targeted RNA molecules in a manner intrinsic to the RILON Oligozyme,  and type 2
RILON  Oligozymes,  which are shorter in length than Type 1 RILON Oligozymes and
participate  with the substrate of the targeted RNA molecule to form a structure
that  results  in the  sequence-specific  catalytic  cleavage  of the target RNA
molecule.  Innovir is evaluating the potential use of RILON Oligozymes to combat
viral and other diseases,  including cancer, central nervous system diseases and
psoriasis.

              Innovir   also  is   investigating   the  use  of  its   Oligozyme
technologies to identify and validate disease targets for new drugs.  Oligozymes
can be used in drug target  identification and validation as substitutes for the
difficult-to-find  selective inhibitors which otherwise are required in the drug
target  identification  and validation  process.  Such  substitution is possible
because  Oligozymes mimic the effect of select inhibitors at an earlier stage of
the  disease-causing  process  than  inhibitors.  While  inhibitors  inhibit the
production of disease-causing proteins, Oligozymes inhibit the production of the
disease-causing  messenger  RNA  molecules  that  produce  such  disease-causing
proteins and, in both cases, the pharmacological effect is the same.

              Management of the Company and Innovir do not  anticipate  that any
of Innovir's proposed products will be available for commercial sale for several
years, if at all. Innovir's current capital is insufficient to enable Innovir to
complete the development of any of its products.


Research Agreements with Columbia University

              In March  1997,  VIMRx  entered  into a  research  agreement  with
Columbia  University   ("Columbia")  pursuant  to  which  VIMRx  Genomics,  Inc.
("Genomics"),   90%-owned  by  the  Company  and  10%-owned  by  Columbia,   was
established. Genomics will provide $30 million in funding to the Columbia Genome
Center  established  by Columbia,  with $4.7 million to be paid during the first
year in quarterly installments.  In exchange, Genomics will receive an exclusive
license to develop, manufacture, use, sell or market products resulting from any
invention or research product developed by the Columbia Genome Center and funded
under the agreement relating to the discovery, mapping, sequencing or validation
of  disease-related  genes.  Following an initial  five-year term, the agreement
automatically  will  renew for  successive  two-year  terms,  with the amount of
funding to be increased at a rate of 9% for every additional year. The agreement
is terminable by either Columbia or Genomics  during the initial  five-year term


                                       4
<PAGE>

upon six months notice,  but in no event earlier than  September 7, 1999.  Under
the agreement, VIMRx agreed to issue 200,000 shares of Common Stock to Columbia,
and granted Columbia "piggyback" registration rights with respect thereto during
the period  April 1, 1997 to April 1,  1999.  VIMRx  intends  to solicit  equity
investments in Genomics for the funding  requirements from potential  technology
partners and other investors.

              Investigators  at the Center have been involved in localizing  and
identifying  novel human  genes  associated  with  genetically  based  diseases,
including cancer,  late-onset  Alzheimer's Disease,  epilepsy,  manic-depressive
disorder  and  glaucoma.  VIMRx's  management  believes the  collaboration  with
Columbia may also provide synergistic opportunities for the Oligozyme technology
owned by Innovir:  the Center  provides  access to  proprietary  gene  sequences
implicated  in  disease  processes  and  the  Oligozyme  technology  may  aid in
understanding the function of such genes and potentially lead to the development
of new diagnostic and therapeutic compounds.

              In March 1997, VIMRx acquired an exclusive, worldwide license from
Columbia  to develop,  manufacture,  use and sell  products  based on a patented
cardiovascular  compound which, in pre-clinical  studies,  has  demonstrated the
ability  to  selectively  prevent  blood  clots  that can lead to stroke  during
surgery while reducing the potential for bleeding complications  associated with
currently available anticoagulation therapies. VIMRx concurrently entered into a
research  agreement with Columbia pursuant to which VIMRx will fund research and
development  of such  compound  during a  three-year  period  in the  amount  of
$2,700,000.


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


              VIMRx is in the  development  stage,  has earned no revenues  from
operations and has incurred a cumulative loss of $42,371,000  from its inception
through  December  31, 1996 in its research and  development  activities  and in
conducting its operations. Its executive offices are located at 2751 Centerville
Road, Suite 210, Wilmington, Delaware 19808 (telephone no. 302-998-1734).




                                       5
<PAGE>



                                  RISK FACTORS

              An investment  in the Shares  and/or the Warrants  involves a high
degree of risk. Prospective investors should give careful  consideration,  among
other items, to the following factors:


              1. Development Stage Company;  Accumulated Deficit. The Company is
in the  development  stage and has not realized  any  operating  revenues.  From
commencement  of its  operations in January 1987 through  December 31, 1996, the
Company  incurred a cumulative  loss of  $42,371,000 in funding its research and
development  programs and in  conducting  its  operations.  Potential  investors
should be aware of the problems, delays, expense and difficulties encountered by
any company in the development  stage, many of which may be beyond the Company's
control.  These  include,  but are not limited to,  unanticipated  problems  and
additional  costs  relating  to  development,  testing,  regulatory  compliance,
production,  marketing and competition. The Company expects to continue to incur
losses for the foreseeable future and there can be no assurance that the Company
will  successfully  complete the transition from a development  stage company to
profitability.


              2.  Dependence on Limited  Potential  Product Line.  The Company's
development  efforts  relate  principally to (i) VIMRxyn as a treatment for AIDS
and  AIDS-related  conditions,   as  a  means  of  inactivating  HIV  and  other
lipid-enveloped  viruses  in blood  collected  for  transfusions,  and for other
applications;  (ii) Oligozymes (through its approximately  68%-owned subsidiary,
Innovir),   (iii)  the   discovery,   mapping,   sequencing   or  validation  of
disease-related  genes (through a research  agreement  between Genomics and with
Columbia) and (iv) a cardiovascular  anticoagulant  compound (through a research
agreement  with  Columbia).  Although  the Company  continues  to seek  emerging
innovative  technologies to diversify its portfolio of potential  products,  its
success currently depends upon the success of the foregoing efforts, as to which
there can be no assurance.  Further,  in the event the  foregoing  efforts prove
successful,  there can be no assurance  that more  effective  and/or less costly
treatments or procedures for the applications  being explored by the Company and
its subsidiaries will not be developed by others.


              3.  Significant  Capital  Requirements  of Innovir.  Although  the
Company has adequate  funds to enable it to operate at its present level through
January 1999, Innovir, the Company's  approximately  68%-owned subsidiary,  will
exhaust its cash and cash  equivalents in late 1997 based upon its current level
of operations,  and will require additional capital to finance completion of the
development  of its proposed  products,  including  continuing  research and the
rigorous  testing and regulatory  approvals which will be required.  The Company
has agreed to provide  Innovir with $1,000,000 in funds (through the exercise of
stock  options)  upon  receipt  of a written  request  from  Innovir's  Board of
Directors  subsequent to May 31, 1997 specifying  that Innovir has  insufficient
funds to  continue  its  operations.  Further,  there can be no  assurance  that
Innovir will be  successful  in obtaining  its funding  requirements  from third
parties or from corporate partnership  arrangements,  in which event the Company
may be  required  to  provide  such  funding in order to  protect  its  economic
investment.


              4. Skin  Photosensitivity of VIMRxyn.  The Company's data analysis
of Phase I/Phase II human clinical trials  sponsored by the National  Institutes
of Health to  determine  the  maximum  tolerated  dose and any side  effects  of
VIMRxyn  as a  treatment  for AIDS  indicated  skin  photosensitivity  to be the
primary  dose-limiting  side  effect.  Although  the  lower  dosage  of  VIMRxyn
administered in a subsequent  Company-sponsored trial in Thailand did not result
in untoward  toxicity or skin  photosensitivity,  there can be no assurance that
such  lower  dosage  will  provide  sufficient  anti-HIV  activity  to produce a
commercially viable therapeutic product for humans.


              5.  Government  Regulation.   The  manufacture  and  marketing  of
therapeutic  products is subject to extensive  regulation by the FDA, as well as
by state and foreign authorities.  Prior to the release of VIMRxyn for marketing
as a  therapeutic  product or agent,  its  tolerance,  safety and  efficacy as a
treatment must be  established  in human  clinical  trials and approval of a new
drug  application  ("NDA")  obtained.  Although the  Company-sponsored  Thailand
trials did not result in untoward toxicity or skin  photosensitivity  and, based
on the measurement  criteria used,  produced evidence of anti-HIV activity in 10
out of 12  patients,  there can be no  assurance  that the FDA will  accept  the
clinical results therefrom.  Among other additional regulatory requirements,  it
is possible that additional  toxicology studies will need to be performed in the


                                       6
<PAGE>

United  States,  and Phase  III  clinical  trials,  which  are both  costly  and
time-consuming,  will  need to be  undertaken  to  obtain  an NDA.  Prior to its
commercialization  as a means  of  inactivating  HIV and  other  lipid-enveloped
viruses in blood  collected  for  transfusions,  a product  license  application
("PLA") or an NDA must be obtained.  These are long-term and costly processes as
to the  successful  completion  of which  there can be no  assurance.  The other
applications of VIMRxyn as well as the other products being  investigated by the
Company and its  subsidiaries  will be subject to similar  extensive  government
regulation.

              In addition to  regulations  enforced  by the FDA,  the  Company's
proposed  products  also may be subject  to  regulation  under the  Occupational
Safety and Health Act, the  Environmental  Protection Act, the Toxic  Substances
Control Act, the Resource  Conservation  and Recovery Act and other  present and
potential future,  state or local  regulations.  Outside the United States,  the
Company  also is subject  to foreign  regulatory  requirements  governing  human
clinical trials and marketing approval for drugs. The requirements governing the
conduct of clinical trials,  product  licensing,  pricing and reimbursement vary
widely from country to country.


              6.  Limited  Personnel -- Reliance on Third  Parties.  At March 1,
1997, the Company had nine full-time employees,  and is substantially  dependent
upon third parties,  with all of the risks attendant  thereto,  to conduct human
clinical trials for VIMRxyn,  develop VIMRxyn as a means of inactivating HIV and
other  lipid-enveloped  viruses in blood  collected  for  transfusions,  conduct
preclinical  and  clinical  studies  for other  applications  of VIMRxyn  and to
manufacture synthetic hypericin compounds for the Company's needs.


              7. Limited  Manufacturing  Capability.  Only limited quantities of
synthetic  hypericin  have been  manufactured.  The  synthesis  process has been
developed  at The  Weizmann  Institution  of Science in Israel,  using a natural
product available from a limited number of specialty  chemical  suppliers as the
precursor.  The  production  process must be further  developed  and refined for
commercial quantities to be produced, as to the success of which there can be no
assurance.


              8.  Competition.  The biomedical  industry is highly  competitive.
Competition in the field in which the Company and its  subsidiaries  are engaged
is intense and expected to increase as knowledge and interest in the  technology
and products being developed by the Company and its subsidiaries  increase.  The
Company and its  subsidiaries  face competition  from  biotechnology  companies,
large pharmaceutical companies,  academic institutions,  government agencies and
public  and  private  research  organizations,  many  of  which  have  extensive
resources  and  experience  in  research  and  development,   clinical  testing,
manufacturing,  regulatory affairs, distribution and marketing and some of which
have  significant  research and  development  activities in areas upon which the
programs of the Company and its  subsidiaries  are  focused.  Current and future
treatments for AIDS, and the use of combination therapy in connection therewith,
may render the Company's  synthetic hypericin program for treating AIDS obsolete
or  non-competitive.  In addition,  forms of hypericin extracted from plants are
being used as lay  treatments  for a variety of disorders,  including  AIDS. The
Company is similarly  subject to substantial  competition  from  pharmaceutical,
chemical  and  biotechnology  firms  in  the  attempt  to  develop  a  means  of
inactivating  blood and other  lipid-enveloped  viruses in blood  collected  for
transfusions,  and  in  seeking  to  develop  treatments  for  hepatitis  C  and
therapeutics for brain cancer (glioma).


              9. Patents and Licenses. The Company has been granted an exclusive
license for the  worldwide  rights to synthetic  hypericin  compounds for viral,
retroviral and other  applications  by New York University and Yeda Research and
Development  Co., Ltd. (the "Hypericin  Licensors")  which have been issued five
U.S. patents for anti-viral and  anti-retroviral  applications and manufacturing
processes  and have filed  patent  applications  for U.S.  and  foreign  patents
relating to the synthesis and therapeutic uses of synthetic hypericin compounds.
Genomics,  the  Company's  90%-owned  subsidiary,  has an  exclusive  license to
develop,  manufacture, use, sell or market products resulting from any invention
or research  product  developed by the Columbia Genome Center under its research
agreement with  Columbia.  The Company also has an exclusive  worldwide  license
from Columbia to develop, manufacture, use and sell products based on a patented
cardiovascular  anticoagulant  compound.  There  can be no  assurance  that such
patents,  or pending  patents  if  issued,  will  provide  adequate  protection.
Further,  infringement claims may be asserted against the Company, the Hypericin
Licensors  and/or  Columbia  which,  if affirmed,  might  require the Company to
acquire licenses from others.  The Company has agreed to indemnify the Hypericin
Licensors and Columbia with respect to any such claims.




                                       7
<PAGE>


              10. Absence of Product Liability Insurance Coverage.  The testing,
marketing  and  sale  of  pharmaceutical  products  entails  a risk  of  product
liability claims by consumers and others and such claims may be asserted against
the  Company  and its  subsidiaries.  The  Company  does  not  maintain  product
liability  insurance  coverage  other  than  a  $1,000,000  product/professional
liability policy  applicable only to its human clinical trials,  and although it
will attempt to obtain such coverage  prior to marketing any product,  there can
be no assurance it will be able to obtain such insurance at a reasonable cost or
in an amount  sufficient  to cover all possible  liabilities.  In the event of a
successful product liability suit against the Company,  lack or insufficiency of
insurance coverage could have a material adverse effect on the Company. Further,
the Company is required under its license agreement with the Hypericin Licensors
to have either  $5,000,000 of product  liability  insurance  coverage naming the
Hypericin  Licensors as  additional  insureds or an  indemnity to the  Hypericin
Licensors  by an  entity  satisfactory  to  the  Hypericin  Licensors  prior  to
marketing a hypericin-based product.


              11.  Risk  Factors  Relating to Innovir.  Innovir,  the  Company's
approximately  68%-owned  subsidiary,  is a development stage company subject to
similar  risks to those  of the  Company,  including  risks  associated  with an
accumulated   deficit,   dependence  upon  a  limited  potential  product  line,
government regulation, limited personnel,  competition, patents and licenses and
product  liability  claims.  In  addition,   Innovir  has  limited  capital  and
significant capital requirements and is dependent on certain key personnel.


              12.  Potential  Adverse  Effect  of Sale of  Shares  and  Warrants
Offered  Hereby.  Sales of the Shares or Warrants  offered  hereby in the public
market  could  materially  and  adversely  affect the market price of the Common
Stock.  Such sales also might  make it more  difficult  for the  Company to sell
equity securities or equity-related securities in the future at a time and price
that the Company deems appropriate.


              13. No Cash Dividends. The Company does not anticipate paying cash
dividends on its Common Stock in the foreseeable future.




                                       8
<PAGE>



                                 USE OF PROCEEDS


              The Company  will not receive  any  proceeds  from the sale of the
Shares  and/or the Warrants  being offered by the Selling  Securityholders.  The
proceeds  to the Company  from  exercise  of the  Warrants  will be added to the
Company's working capital and will be available for general corporate purposes.


                             SELLING SECURITYHOLDERS

              The following table sets forth certain information with respect to
the Common Stock owned and the Shares and Warrants  being offered  hereby by the
Selling Securityholders:

<TABLE>
<CAPTION>
                                                                                       Warrants
                                                 Shares of                              and/or
                                                Common Stock         Placement          Warrant            After Offering
                                                Beneficially           Shares           Shares    -------------- -----------------
                                               Owned Prior to          Being             Being        Shares           Percent of
                Name                            Offering (1 )         Offered           Offered        Owned          Outstanding
                ----                            -------------         -------           -------        -----          -----------
<S>                                             <C>                 <C>               <C>           <C>               <C>           
Aries Domestic                                  1,324,999           1,166,666         158,333           ---                    ---
  Fund, L.P (2).......................
The Aries Fund (2)....................          2,725,000           2,500,000         225,000           ---                    ---
Armen Partners,                                  125,000               ---            125,000           ---                    ---
    L.P...............................
Chesed Congregations                             100,000               ---            100,000           ---                    ---
    of America........................
Robert J. Conrads.....................           100,500               ---             12,500         88,000                     *
Delaware Charter Guarantee   & Trust Co.          50,000              33,333           16,667           ---                    ---
C/F Barry
    F. Schwartz, IRA
    Rollover..........................
Nathan Ehrlich........................            37,500               ---             37,500           ---                    ---
Irwin Engelman & Rosalyn                          99,999              66,666           33,333           ---                    ---
    A. Engelman.......................
Laurence D. Fink (3)..................           400,000             266,667          133,333           ---                    ---
Laurence D. Fink and Lori W. Fink Family          99,999              66,666           33,333           ---                    ---
Trust u/a dated 1/10/95 (3)...........
Joseph H. Flom........................            49,999              33,333           16,666           ---                    ---
Howard Gittis.........................           199,999             133,333           66,666           ---                    ---
Gilbert Goldstein, Trustee under                 250,001             166,667           83,334           ---                    ---
Indenture of Trust QIT dated 12/23/88.
Gilbert Goldstein                                 49,999              33,333           16,666           ---                    ---
    & Carol Goldstein.................
Robert P. Gordon......................            12,500               ---             12,500           ---                    ---
Richard E. Halperin                               12,499              8,333            4,166            ---                    ---
    & Lucy Landesman
    Halperin..........................
The Holding Company...................            25,000               ---             25,000           ---                    ---
Robert and Fern Hurst                             99,999              66,666           33,333           ---                    ---
    Foundation........................
Jackson Hole Investments Acquisition,             50,000               ---             50,000           ---                    ---
L.P...................................
Kenneth M. Jacobs.....................            39,999              26,666           13,333           ---                    ---
Javelin Ltd...........................            25,000               ---             25,000           ---                    ---
Robert Klein, M.D.....................            25,000               ---             25,000           ---                    ---
Kenneth Lerer.........................            24,999              16,666           8,333            ---                    ---
Dean Witter Reynolds Cust. for Solomon            25,000               ---             25,000           ---                    ---
Lerer IRA
    Rollover..........................
J. Jay Lobell and Beverly O. Lobell...           100,500               ---             12,500         88,000                     *
MacAndrews & Forbes Group, Incorporated           12,500              8,333            4,167            ---                    ---
Savings or Cash Option Plan for
Employees f/b/o Richard E. Halperin...
James R. Maher........................            20,001              13,334           6,667            ---                    ---
James R. Maher as custodian for Caroline          20,000              13,333           6,667            ---                    ---
C. Maher under the UGMA of NY to age 21..
James R. Maher as custodian for James R.          20,000              13,333           6,667            ---                    ---
Maher, Jr. under the UGMA of NY to age 21
James R. Maher as custodian for                   19,999              13,333           6,666            ---                    ---
    Emily L. Maher under the
    UGMA of NY to age 21..............
James R. Maher as custodian for                   19,999              13,333           6,666            ---                    ---
Elizabeth H. Maher under the UGMA of NY
to age 21.............................
Alfons Melohn.........................            87,500               ---             87,500           ---                    ---
Ronald O. Perelman....................           999,999             666,666          333,333           ---                     *
Linda G. Robinson(4)..................           249,999             133,333           66,666         50,000                   ---
Jerry L. Ruyan........................            50,000               ---             50,000           ---                    ---
Stephen H. Sands......................            9,999                6,666            3,333           ---                    ---
Barry F. Schwartz.....................            49,999              33,333           16,666           ---                    ---
Sequester Ltd. Corp...................            50,000               ---             50,000           ---                    ---
J.F. Shea Co., Inc., as Nominee 1995-41          100,000               ---            100,000           ---                    ---
Todd J. Slotkin.......................            49,999              33,333           16,666           ---                    ---
Bruce Slovin..........................            99,999              66,666           33,333           ---                    ---
Morris Talansky.......................            37,500               ---             37,500           ---                    ---
The Trustees of Columbia                         200,000             200,000            ---             ---                    ---
    University in the City
    of New York.......................
Venkol Ventures,                                 184,167             122,778           61,389           ---                    ---
    L.P (5)...........................
Venkol Ventures,                                 115,833              77,222           38,611           ---                    ---
    Ltd (5). .........................
Aaron Wolfson.........................            50,000               ---             50,000           ---                    ---
Abraham Wolfson.......................            50,000               ---             50,000           ---                    ---
Morris Wolfson Family Limited Partnership         50,000               ---             50,000           ---                    ---
Uzi Zucker............................            25,000               ---             25,000           ---                    ---
                                               ---------            ---------        ---------        -------     ----        -----
    Total.............................          8,625,984           5,999,991        2,399,993        226,000                   *
                                                ==========          =========        =========        =======     ====        =====
</TABLE>


*  Less than one percent.

(1)           Includes Warrant Shares issuable upon exercise of Warrants.

(2)           Lindsay A. Rosenwald,  M.D., a director of the Company,  serves as
              President and is sole shareholder of Paramount  Capital Asset
              Management,  Inc.,  ("PCAM") which is the general partner of Aries
              Domestic Fund, L.P. and investment manager of The Aries Fund. 
              Dr. Rosenwald  disclaims  beneficial  ownership of the shares
              beneficially  owned by PCAM except to the extent of his pecuniary 
              interest, if any.

(3)           Laurence Fink serves as a director of the Company.

(4)           Linda  Robinson  serves as a director  of the  Company  and the 
              Company  retains a  strategic  communications consulting firm for
              which Ms. Robinson serves as Chairman and Chief Executive Officer.


                                       11
<PAGE>

(5)           M.S.  Koly, a former  director and former  acting chief  executive
              officer of the Company  (having served in such  capacities  within
              three  years prior to the date of this  Prospectus),  is a general
              partner of a limited partnership that serves as general partner of
              Venkol Ventures, L,.P., and is a principal shareholder and advisor
              to Venkol Ventures, Ltd.

              3,000,000 of the Placement Shares were issued on December 23, 1996
to Aries Domestic Fund, L.P. and The Aries Trust (the "Aries Funds") in exchange
for shares of Innovir  owned by the Aries  Funds in a  transaction  pursuant  to
which the  Company  acquired a  controlling  interest in Innovir  (the  "Innovir
Acquisition")  and 200,000 of the Placement  Shares were issued in March 1997 to
Columbia in connection  with a research  agreement with Columbia.  The 2,799,991
balance of the  Placement  Shares and  1,399,991 of the Warrants  were issued to
accredited investors in a private placement in June 1996 (the "June 1996 Private
Placement")  pursuant to which the investors  agreed not to sell such Shares and
the Warrant  Shares  issuable  upon  exercise of the Warrants  prior to June 21,
1997.  The  1,000,000  balance  of the  Warrants  were  issued  in June  1996 to
accredited  investors in exchange for the warrants received by such investors in
a private placement in December 1995 (the "December 1995 Private Placement"). As
part of the Innovir Acquisition,  VIMRx agreed to file a registration  statement
for the public  resale of the  3,000,000  Placement  Shares  issued to the Aries
Funds  and,  as  part of the  June  1996  Private  Placement,  agreed  to file a
registration  statement for the public resale of the 2,799,991  Placement Shares
and 2,799,991 Warrants issued in connection  therewith.  As part of the December
1995 Private  Placement,  the investors  were granted  "piggyback"  registration
rights with respect to the 1,000,000 Warrants issued to them, and as part of the
research agreement with Columbia,  Columbia was granted "piggyback" registration
rights with respect to the 200,000 Placement Shares issued to Columbia.

              The  holders  of the  2,799,991  Placement  Shares  and  1,399,991
Warrants  issued in the June 1996  Private  Placement  may not sell or  transfer
their respective  Placement Shares and Warrants until June 21, 1997, without the
Company's  prior  written  consent,  except for sales or  transfers to bona fide
affiliates  or a bona  fide  pledge  or  pursuant  to the  laws of  descent  and
distribution.


                            DESCRIPTION OF SECURITIES

              The Company is  authorized to issue  120,000,000  shares of Common
Stock, par value $.001 per share.

Common Stock

              The holders of Common  Stock are  entitled  to share  ratably on a
share-for-share  basis with respect to any dividends when, as and if declared by
the Board of Directors out of funds legally available  therefor.  Each holder of
Common  Stock  is  entitled  to one vote for each  share  held of  record.  Upon
liquidation,  dissolution  or winding- up of the Company,  the holders of Common
Stock are  entitled to share  ratably in the net assets  legally  available  for
distribution. Holders of Common Stock have no preemptive rights. All outstanding
shares  are,  and the  shares of Common  Stock  issuable  upon  exercise  of the
Warrants will be, legally issued,  fully paid and  non-assessable.  The Board of
Directors is  authorized to issue  additional  shares of Common Stock within the
limits authorized by the Company's charter and without stockholder action.

Warrants

              Each Warrant entitles the registered  holder to purchase one share
of Common  Stock at $1.50  per  share at any time  through  June 20,  2006,  the
expiration  date of the  Warrants.  The  exercise  price of the Warrants and the
number  and kind of shares  of Common  Stock or other  securities  and  property
issuable  upon  exercise of the  Warrants are subject to  adjustment  in certain
circumstances,  including a stock split of, stock dividend on, or a subdivision,
combination or capitalization  of, the Common Stock, or the sale of Common Stock
at less than the market  price of the Common  Stock other than upon  exercise of
options  or  warrants  outstanding  on or prior to June 21,  1996  (the date the
Warrants were issued).  Upon notice to the  Warrantholders,  the Company has the
right  to  reduce  the  exercise  price or  extend  the  expiration  date of the
Warrants.

              The Warrants were issued pursuant to a warrant  agreement  between
the Company and American Stock Transfer & Trust Company,  the warrant agent (the
"Warrant Agent"),  and are evidenced by warrant certificates in registered form.
The  Warrants  do not confer  upon the  holder  any voting or other  rights of a
stockholder of the Company.  The Warrants may be exercised upon surrender of the
Warrant certificate  evidencing such Warrants on or prior to the expiration date


                                       12
<PAGE>

of such  Warrants at the offices of the Warrant Agent with the form of "Election
to  Purchase"  on the reverse  side of the  Warrant  certificate  completed  and
executed as indicated,  accompanied  by payment of the full  exercise  price (by
certified  check  payable to the order of the  Warrant  Agent) for the number of
Warrants being exercised.  At February 1, 1997, there were Warrants  outstanding
to purchase 2,399,993 shares of Common Stock.

Delaware Business Combination Statute

              Section 803 of the  Delaware  General  Corporation  Law  generally
prohibits a  publicly-held  Delaware  corporation  from  engaging in a "business
combination" with an "interested  stockholder" for a period of three years after
the date the  person  became an  interested  stockholder  unless  (with  certain
exceptions)  the business  combination  or the  transaction  in which the person
became an interested stockholder is approved in a prescribed manner.  Generally,
a  "business  combination"  includes  a merger,  asset or stock  sale,  or other
transaction  resulting  in a  financial  benefit  to  the  stockholder,  and  an
"interested   stockholder"  is  a  person  who,  together  with  affiliates  and
associates, owns (or within three years, did own) 15% or more of a corporation's
outstanding voting stock. The applicability of this provision to the Company may
have the effect of delaying,  deferring or preventing a change in control of the
Company without further action by the Company's stockholders.

Transfer Agent and Warrant Agent

              The transfer  agent for the Common Stock and the Warrant Agent for
the Warrants is American Stock Transfer & Trust Company, New York, New York.


                              PLAN OF DISTRIBUTION

              The Selling  Securityholders  may sell the Shares and the Warrants
from time to time through dealers or brokers in transactions on The Nasdaq Stock
Market at prices  then  prevailing,  or directly  to one or more  purchasers  in
negotiated  transactions at negotiated prices, or in a combination  thereof. The
Selling  Securityholders  and any dealers or brokers  that  participate  in such
distribution may be deemed  "underwriters"  within the meaning of the Securities
Act and any  commissions or discounts  received by any such dealer or broker may
be deemed "underwriting compensation."

              The cost of  registering  the  Shares and the  Warrants  under the
Securities Act will be paid by the Company.


                                  LEGAL MATTERS

              The  validity  of the Shares and the  Warrants  offered  hereby is
being passed upon for the Company by Epstein Becker & Green, P.C., New York, New
York. Members of the firm own, directly or indirectly,  295,000 shares of Common
Stock and options to purchase 100,000 shares of Common Stock.


                                     EXPERTS

              The  financial  statements  incorporated  in  this  Prospectus  by
reference  from the  Company's  Annual  Report on Form  10-K for the year  ended
December  31,  1996 have been  audited  by Richard  A.  Eisner &  Company,  LLP,
independent auditors, as stated in their report, which is incorporated herein by
reference,  and has been so incorporated in reliance upon such report given upon
the authority of such firm as experts in accounting and auditing.




                                       13
<PAGE>


                                                           

                                     PART II

                     INFORMATION NOT REQUIRED IN PROSPECTUS



Item 14.        Other Expenses of Issuance and Distribution.

                  The estimated  expenses of this offering,  all of which are to
be paid by the Registrant, are as follows:

      SEC Registration fee................................     $6,363
      Nasdaq Stock Market listing fee.....................      7,400
      Printing and engraving expenses.....................      3,000
      Accounting fees and expenses........................      5,000
      Legal fees and expenses.............................     30,000
      Miscellaneous expenses..............................      3,237
                                                              -------
          Total...........................................    $55,000
                                                              =======



Item 15.  Indemnification of Directors and Officers.

                  Section 145 of the  Delaware  General  Corporation  Law grants
corporations  the power to indemnify their  directors,  officers,  employees and
agents in accordance with the provisions thereof. Article Eighth of Registrant's
Restated   Certificate  of  Incorporation   provides  for   indemnification   of
Registrant's  directors,  officers,  agents  and  employees  to the full  extent
permissible under Section 145 of the Delaware General Corporation Law.


Item 16.  Exhibits.


2.2a                 -     Copy of Agreement dated November 21, 1996 (the "Aries
                           Agreement") by and among the Registrant and The Aries
                           Domestic Fund, L.P. (1)
2.2b                 -     Copy of Amendment to the Aries Agreement dated
                           December 23, 1996 by and among the Registrant and the
                           Aries Fund and The Aries Domestic Fund, L.P. (1)
2.3                  -     Copy of Agreement dated November 21, 1996 by and
                           between the Registrant and Innovir Laboratories, Inc.
                           (1)
4.4                  -     Copy of Warrant Agreement dated June 17, 1996 between
                           the Registrant and
                           American Stock Transfer & Trust Company.
5.1                  -     Opinion of Epstein Becker & Green, P.C., as to
                           legality.
10.3                 -     Copy of Registrant's Amended and Restated 1990 
                           Incentive and Non-Incentive Stock Option Plan, as 
                           amended  through  February 22,1997(2).
10.9                 -     Copy of Employment letter agreement dated June 21, 
                           1994 between Registrant an Alfonso J. Tobia. (3)



                                      II-1
<PAGE>

10.11                -     Copy of Registrant's 1995 Outside Directors Stock 
                           Option Plan. (4)
10.12                -     Copy of letter agreement dated August 7, 1995 between
                           Registrant and Lindsay A. Rosenwald, M.D. (4)
10.13                -     Copy of Stock Option Agreement dated August 7, 1995
                           between Registrant and Lindsay A. Rosenwald, M.D. (4)
10.14                -     Copy of Consulting and Stock Option Agreement dated
                           November 17, 1995 between registrant and Eric A. Rose
                           , M.D. (4)
10.15                -     Copy of Stock Option Agreement dated November 17, 
                           1995 between Registrant and Donald G. Drapkin. (4)
10.16                -     Copy of Registrant's 1996 Non-Employee Director
                           Restricted Stock Award Plan. (4)
10.17                -     Copy of Registration Rights Agreement dated December
                           23, 1996, between Registrant and The Aries Fund and 
                           The Aries Domestic Fund, L.P. (1)
10.18                -     Copy of Research Agreement dated as of March 7, 1997 
                           between the Trustees of Columbia University in the 
                           City of New York and VIMRx Genomics, Inc. (5)
10.19                -     Copy of Registrant's 1997 Incentive and Non-Incentive
                           Stock Option Plan. (2)
10.20                -     Copy of Employment Agreement dated October 30, 1996 
                           between the Registrant and Richard L. Dunning. (2)
10.21                -     Copy of Employment Agreement dated August 26, 1996, 
                           between the Registrant and David A. Jackson, Ph.D.
                           (1)
23.1                 -     Consent of Epstein Becker & Green, P.C. (included in 
                           Exhibit 5.1).
23.2                 -     Consent of Richard A. Eisner & Company, LLP.
24.1                 -     Power of Attorney (included on page II-4).

- ----------



<PAGE>

(1)       Filed as the same numbered  Exhibit to Registrant's  Current Report on
          Form 8-K  (Commission  File No.  0-19153)  filed  January  4, 1997 and
          incorporated herein by reference thereto.

(2)       Filed as the same numbered  Exhibit to  Registrant's  Annual Report on
          Form 10-K  (Commission  File No.  0-19153) for the year ended December
          31, 1996 and incorporated herein by reference thereto.

(3)       Filed as the same numbered  Exhibit to  Registrant's  Annual Report on
          Form 10-K for the year ended  December 31, 1994  (Commission  File No.
          0-19153) and incorporated herein by reference.

(4)       Filed as the same numbered  Exhibit to  Registrant's  Annual Report on
          Form 10-K for the year ended  December 31, 1995  (Commission  File No.
          0-19153) and incorporated herein by reference thereto.

(5)       Filed as the same numbered  Exhibit to Registrant's  Current Report on
          Form 8-K (Commission File No. 0-19153) filed March 24, 1997.




                                      II-2
<PAGE>

Item 17.  Undertakings.

(a)      The 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;

                  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 set forth in the Registration Statement;

                  iii)     to include any material  information  with respect to
                           the plan of distribution not previously  disclosed in
                           the Registration  Statement or any material change of
                           such information in the Registration Statement;

                  provided,  however,  that paragraphs (i) and (ii) above do not
         apply if the  information  required to be included in a  post-effective
         amendment by those paragraphs is contained in periodic reports filed by
         the  Registrant  pursuant  to  Section  13 or 15(d)  of the  Securities
         Exchange Act of 1934, as amended, that are incorporated by reference in
         the Registration Statement.

                  (2) That, for the purpose of determining  any liability  under
         the Securities Act of 1933, each such post-effective amendment shall be
         deemed to be a new  registration  statement  relating to the securities
         offered therein, and the offering of such securities at that time shall
         be deemed to be the initial bona fide offering thereof.

                  (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.

                  (b) The  Registrant  hereby  undertakes  that, for purposes of
determining  any liability  under the Securities Act of 1933, each filing of the
Registrant's  annual  report  pursuant to Section  13(a) or Section 15(d) of the
Securities  Exchange  Act of  1934  that is  incorporated  by  reference  in the
Registration  Statement  shall  be  deemed  to be a new  registration  statement
relating to the securities offered therein,  and the offering of such securities
at that time shall be deemed to be the initial bona fide offering thereof.

                  (c) Insofar as indemnification  for liabilities  arising under
the  Securities  Act of  1933  may  be  permitted  to  directors,  officers  and
controlling  persons  of  the  Registrant  pursuant  to  the  provisions  of its
Certificate of Incorporation, its By-Laws, the Delaware General Corporation Law,
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 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 of whether
such  indemnification by it is against public policy as expressed in the Act and
will be governed by the final adjudication of such issue.




                                      II-3
<PAGE>


                      POWER OF ATTORNEY TO SIGN AMENDMENTS

                  KNOW  ALL  MEN BY  THESE  PRESENTS,  that  each  person  whose
signature  appears below does hereby  constitute and appoint  Richard L. Dunning
and Francis M.  O'Connell,  and each of them, with full power to act without the
other, his true and lawful  attorney-in-fact  and agent for him and in his name,
place and stead,  in any and all  capacities,  to sign any or all  amendments to
this Registration Statement and to file the same, with all exhibits thereto, and
other  documents  in  connection  therewith,  with the  Securities  and Exchange
Commission,  granting unto said  attorneys-in-fact and agents, 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  in  order to
effectuate the same as fully,  to all intents and purposes,  as they or he might
or  could  do  in  person,   hereby  ratifying  and  confirming  all  that  said
attorneys-in-fact  and agents,  or any of them,  may  lawfully do or cause to be
done by virtue hereof.

                                   SIGNATURES

                  Pursuant to 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 has  duly  caused  this
Registration Statement to be signed on its behalf by the undersigned,  thereunto
duly authorized,  in the City of Wilmington,  State of Delaware, on the 14th day
of April, 1997.

                                   VIMRx PHARMACEUTICALS INC.


                                   By /s/ Richard L. Dunning
                                      ----------------------
                                          Richard L. Dunning
                                          President and Chief Executive Officer



                  Pursuant to the  requirements  of the  Securities Act of 1933,
this  Registration  Statement has been signed below by the following  persons in
the capacities and on the dates indicated.


      Signature                            Title                       Date

/s/ Richard L. Dunning           President and Chief Executive    April 14, 1997
- ----------------------           Officer and Director  
Richard L. Dunning               (Principal Executive Officer)

/s/ Donald G. Drapkin            Chairman of the Board and        April 14, 1997
- ---------------------            Director   
Donald G. Drapkin

/s/ Francis M. O'Connell         Chief Financial Officer          April 14, 1997
- ------------------------         (Principal Financial and
Francis M. O'Connell             Accounting Officer)

/s/ Laurence D. Fink             Director                         April 14, 1997
- --------------------
Laurence D. Fink

/s/ Jerome Groopman, M.D.        Director                         April 14, 1997
Jerome Groopman, M.D.

/s/ Linda G. Robinson            Director                         April 14, 1997
- ---------------------
Linda G. Robinson

/s/ Lindsay A. Rosenwald, M.D.   Director                         April 14, 1997
Lindsay A. Rosenwald, M.D.

/s/ Eric A. Rose, M.D.           Director                         April 14, 1997
Eric A. Rose, M.D.

/s/ Michael Weiner, M.D.         Director                         April 14, 1997
Michael Weiner, M.D.




                                      II-5
<PAGE>


                                                            Exhibit 23.2

                        CONSENT OF INDEPENDENT AUDITORS


                  We  consent  to  the   incorporation   by   reference  in  the
Registration   Statement  on  Form  S-3  of  VIMRx   Pharmaceuticals   Inc.  and
subsidiaries  (the "Company") of our report dated March 14, 1997 relating to the
consolidated  balance sheets of the Company as of December 31, 1996 and December
31, 1995 and the  related  consolidated  statements  of  operations,  changes in
shareholders'  equity  and cash  flows for each of the  years in the  three-year
period ended  December  31, 1996 and the amounts for such years  included in the
period  December 30, 1986  (inception)  to December  31,  1996,  included in the
Company's  annual  report on Form 10-K for the fiscal  year ended  December  31,
1996. We also consent to the  reference to our firm under the caption  "Experts"
in the prospectus.



RICHARD A. EISNER & COMPANY, LLP


New York, New York
April 15, 1997



                                      II-6
<PAGE>


                                  Exhibit Index
                                                                          Page
2.2a           -     Copy of Agreement dated November 21, 1996 (the
                     "Aries Agreement") by and among the Registrant
                     and The Aries Domestic Fund, L.P...............       (1)
2.2b           -     Copy of Amendment to the Aries Agreement dated 
                     December 23, 1996 by and among the Registrant 
                     and the Aries Fund and The Aries Domestic Fund
                     , L.P..........................................       (1)
2.3            -     Copy of Agreement dated November 21, 1996 by and
                     between the Registrant and Innovir Laboratories, 
                     Inc............................................       (1)
4.4            -     Copy of Warrant Agreement dated June 17, 1996 
                     between the Registrant and American Stock Transfer
                     & Trust Company................................
5.1            -     Opinion of Epstein Becker & Green, P.C., as to 
                     legality.......................................
10.3           -     Copy of Registrant's Amended and Restated 1990 
                     Incentive and Non-Incentive Stock Option Plan, 
                     as amended   through February 22, 1997.........       (2)
10.9           -     Copy of Employment letter agreement dated June 
                     21, 1994 between Registrant an Alfonso J. Tobia.      (3)
10.11          -     Copy of Registrant's 1995 Outside Directors Stock
                     Option Plan...................................        (4)
10.12          -     Copy of letter agreement dated August 7, 1995
                     between Registrant and Lindsay A. Rosenwald, M.D..    (4)
10.13          -     Copy of Stock Option Agreement dated August 7, 
                     1995 between Registrant and Lindsay A. Rosenwald
                     , M.D.............................................    (4)
10.14          -     Copy of Consulting and Stock Option Agreement 
                     dated November 17, 1995 between registrant and 
                     Eric A. Rose, M.D................................     (4)
10.15          -     Copy of Stock Option Agreement dated November 17,
                     1995 between Registrant and Donald G. Drapkin.....    (4)
10.16          -     Copy of Registrant's 1996 Non-Employee Director 
                     Restricted Stock Award Plan......................     (4)
10.17          -     Copy of Registration Rights Agreement dated 
                     December 23, 1996, between Registrant and The 
                     Aries Fund and The Aries Domestic Fund, L.P.......    (1)
10.18          -     Copy of Research Agreement dated as of March 7, 
                     1997 among the  Registrant, The Trustees of Columbia
                     University in the City of New York and VIMRx Genomics
                     , Inc..............................................   (5)
10.19          -     Copy of Registrant's 1997 Incentive and Non-
                     Incentive Stock Option Plan........................   (2)
10.20          -     Copy of Employment Agreement dated October 30, 1996
                     between the Registrant and Richard L. Dunning......   (2)
10.21          -     Copy of Employment Agreement dated August 26, 1996
                     between the Registrant and David A. Jackson, Ph.D..   (2)
23.1           -     Consent of Epstein Becker & Green, P.C.
                     (included in Exhibit 5.1)
23.2           -     Consent of Richard A. Eisner & Company, LLP
                     (included on page II-6)
24.1           -     Power of Attorney (included on page II-4)




                                      II-7
<PAGE>

- ----------



<PAGE>


(1)       Filed as the same numbered  Exhibit to Registrant's  Current Report on
          Form 8-K  (Commission  File No.  0-19153)  filed  January  4, 1997 and
          incorporated herein by reference thereto.

(2)       Filed as the same numbered  Exhibit to  Registrant's  Annual Report on
          Form 10-K  (Commission  File No.  0-19153) for the year ended December
          31, 1996 and incorporated herein by reference thereto.

(3)       Filed as the same numbered  Exhibit to  Registrant's  Annual Report on
          Form 10-K for the year ended  December 31, 1994  (Commission  File No.
          0-19153) and incorporated herein by reference.

(4)       Filed as the same numbered  Exhibit to  Registrant's  Annual Report on
          Form 10-K for the year ended  December 31, 1995  (Commission  File No.
          0-19153) and incorporated herein by reference thereto.

(5)       Filed as the same numbered  Exhibit to Registrant's  Current Resort on
          Form 8-K (Commission File no. 0-19153) filed March 24, 1997.


                                      II-8
<PAGE>


                                                                     Exhibit 4.4

                                WARRANT AGREEMENT


                  WARRANT  AGREEMENT,  dated as of June 17, 1996  between  VIMRx
Pharmaceuticals Inc., a Delaware corporation (the "Company"), and American Stock
Transfer & Trust Company (the "Warrant Agent").


                  WHEREAS, in connection with a private placement offering of up
to 2,800,000 units ("Units"), each Unit consisting of one share of the Company's
Common  Stock,  $.001 par value  ("Common  Stock") and  one-half a Common  Stock
Subscription  Warrant  (each  a  "Warrant"  and  collectively,  the  "Warrants")
pursuant to a Subscription  and  Registration  Rights  Agreement dated March 21,
1996 between the Company and the investors signatory thereto,  and the automatic
conversion of certain  warrants  issued by the Company in December 1995 upon the
closing of the private placement offering of Units, the Company will issue up to
2,400,000 Warrants; and

                  WHEREAS,  each Warrant entitles the registered  holder thereof
(each a "Holder"  and  collectively,  the  "Holders")  to purchase  one share of
Common  Stock at an  Exercise  Price (as  defined in Section 9 hereof) of $1.50,
subject to  adjustment  as  hereinafter  provided  (the  shares of Common  Stock
issuable upon exercise of the Warrants  hereinafter  referred to as the "Warrant
Shares"); and


                  WHEREAS,  the  Company  desires  the  Warrant  Agent to act on
behalf of the Company, and the Warrant Agent is willing so to act, in connection
with the  issuance,  registration,  transfer and exchange of the  Warrants,  the
exercise of the Warrants, and the rights of the Holders;


                  NOW, THEREFORE,  in consideration of the foregoing and for the
purpose of defining the terms and  provisions of the Warrants and the respective
rights and  obligations  thereunder of the Company,  the Holders and the Warrant
Agent, the Company and the Warrant Agent hereby agree as follows:

                  SECTION 1.  Appointment of Warrant  Agent.  The Company hereby
appoints the Warrant  Agent to act as agent for the Company in  accordance  with
the provisions set forth in this Agreement, and the Warrant Agent hereby accepts
such  appointment.  As used  herein,  the term  "Warrant  Agent"  shall mean the
Warrant Agent and any successor appointed hereunder.

                  SECTION 2.  Form and Countersignature of Warrants.

                  2.1 Form of Warrant. The text of the Warrant, the subscription
form (the "Subscription Form"), and form of assignment shall be substantially as
set forth in the form of warrant  certificate  attached hereto as Exhibit A. The
Warrants  shall be executed  on behalf of the Company by one or more  authorized
officers.  The  signature  of any  such  officers  on the  Warrants  may be made
manually or by facsimile.

                  2.2  Countersignature  of  Warrants.  The  Warrants  shall  be
countersigned  manually or by  facsimile  by the Warrant  Agent and shall not be
valid for any purpose unless so countersigned.  Warrants may be countersigned by
the  Warrant  Agent  and  may be  issued  or  delivered  by the  Warrant  Agent,
notwithstanding  that the persons  whose manual or facsimile  signatures  appear
thereon as proper  officers of the Company shall have ceased to be such officers
at the time of such  countersignature,  issuance or delivery.  Warrants shall be
dated as of the date of  issuance  or  countersignature  thereof by the  Warrant
Agent either upon initial issuance or upon exchange, substitution or transfer.

                  SECTION 3.    Issuance and Registration of Warrants.

                  3.1 Initial  Issuance  of  Warrants.  The Warrant  Agent shall
issue the Warrants upon receipt of, and in accordance  with, a statement from an
authorized representative of the Company as contemplated by Section 14.10 hereof
specifying  the identity of, and number of Warrants to be issued to, each person
or entity to be issued Warrants.

                  3.2 Registration.  The Warrants shall be numbered and shall be
registered  in a warrant  register  maintained  by the Warrant Agent as they are
issued.  The  Company and the  Warrant  Agent may deem and treat the  registered
holder of a Warrant  Certificate as the absolute owner thereof  (notwithstanding
any  notation of  ownership or other  writing  thereon made by anyone),  for the
purpose of any exercise  thereof and any  distribution to the holder thereof and
for all other  purposes  and neither the Company nor the Warrant  Agent shall be
affected  by any  notice  to the  contrary.  The  Company  shall not be bound to
recognize  any  equitable  or other claim to or interest in such  Warrant on the
part of any other person.

                  SECTION 4.  Transfer and Exchange of Warrants.

                  4.1 Transfer of Warrants.  The Warrants shall be  transferable
only on the books of the Warrant Agent maintained at the principal office of the
Warrant Agent upon  delivery  thereof duly endorsed by the Holder or by his duly
authorized  attorney or  representative,  or accompanied  by proper  evidence of


                                       2
<PAGE>

succession,  assignment  or authority to transfer,  which  endorsement  shall be
guaranteed by an eligible guarantor institution which is a member of a signature
guarantee program satisfactory to the Warrant Agent (an "Eligible Institution").
Warrants  may be  transferred  only in whole,  so as to allow the Holder of each
Warrant to purchase one full share of Common Stock.  In all cases of transfer by
an attorney-in-fact,  the original power of attorney,  duly approved,  or a copy
thereof, duly certified,  in such form and with such other evidence of authority
as the  Warrant  Agent shall  request,  shall be  deposited  and remain with the
Warrant Agent.  In case of transfer by executors,  administrators,  guardians or
other legal  representatives,  duly  authenticated  evidence of their  authority
shall be produced, in such form and with such other evidence of authority as the
Warrant Agent shall request, and may be required to be deposited and remain with
the Warrant Agent in its discretion. Upon any such registration of transfer, the
Warrant  Agent  shall  countersign  and deliver a new Warrant or Warrants to the
person entitled thereto.

                  4.2 Exchange of Warrant Certificates. Each Warrant certificate
may be exchanged upon surrender at the principal office of the Warrant Agent for
another  certificate or certificates  entitling the Holder thereof to purchase a
like  aggregate  number of Warrant  Shares as the  certificate  or  certificates
surrendered  then  entitle  such  Holder to  purchase.  Any Holder  desiring  to
exchange  a Warrant  certificate  or  certificates  shall  make such  request in
writing delivered to the Warrant Agent, and shall surrender,  properly endorsed,
the certificate or certificates to be so exchanged. Thereupon, the Warrant Agent
shall  countersign  and  deliver  to the  Holder a new  Warrant  certificate  or
certificates,  as the case may be, as so requested,  in the name of such Holder.
No  fractional  Warrant   certificates  shall  be  issued  and  no  new  Warrant
certificate  entitling the Holder thereof to purchase  fractional shares will be
issued.

                  SECTION 5.   Term of Warrants; Exercise of Warrants.

                  5.1 Term of Warrants.  Subject to the terms of this Agreement,
each  Holder  shall have the right,  which may be  exercised  commencing  at the
opening of business on June 21, 1996 until 5:00 p.m., New York time, on June 20,
2006 (the "Expiration  Date"),  to purchase from the Company the number of fully
paid and  nonassessable  Warrant  Shares  which  the  Holder  may at the time be
entitled to purchase on exercise of such Warrants.

                  5.2  Exercise of  Warrants.  A Warrant may be  exercised  upon
surrender to the Warrant Agent at its  principal  office of the  certificate  or
certificates  evidencing  the  Warrants  to  be  exercised,  together  with  the
Subscription Form duly completed and signed, which signature shall be guaranteed
by an  Eligible  Institution,  and upon  payment  to the  Warrant  Agent for the
account of the Company of the Exercise Price (as defined in Section 9 hereof and
subject to adjustment in  accordance  with the  provisions of Section 10 hereof)
for the number of Warrant  Shares in  respect  of which such  Warrants  are then


                                       3
<PAGE>

exercised. Payment of the aggregate Exercise Price shall be made by certified or
official bank check.

                  Upon the  surrender  of Warrants  and payment of the  Exercise
Price as aforesaid, the Warrant Agent shall (i) cause to be issued and delivered
as soon as  practicable  to or upon the written order of the Holder in such name
or names as the Holder may  designate,  a certificate  or  certificates  for the
number of full Warrant  Shares so purchased  upon the exercise of such  Warrants
and, if the Warrants are exercised in whole, in lieu of any fractional  share of
the Common  Stock to which the Holder  shall be  entitled,  pay to the Holder or
such other  person as the Holder may  designate  cash in an amount  equal to the
closing  price per share on the trading day  preceding the date of such exercise
multiplied  by  such  fraction,  and  (ii)  deliver  the  other  securities  and
properties  receivable  upon  the  exercise  of  the  Warrants  pursuant  to the
provisions of the Warrants.  The Company shall  promptly  provide to the Warrant
Agent  the cash  payable  in lieu of a  fractional  share.  No  certificate  for
fractional  Warrant Shares will be issued.  If permitted by applicable law, such
certificate or  certificates  shall be deemed to have been issued and any person
so  designated  to be named  therein  shall be deemed to have become a holder of
record of such Warrant Shares as of the date of the receipt by the Warrant Agent
of such Warrants and payment of the Exercise Price, as aforesaid.  The rights of
purchase  represented by the Warrants shall be  exercisable,  at the election of
the  Holders  thereof,  either in full or from time to time in part,  and in the
event that a  certificate  evidencing  Warrants is  exercised in respect of less
than all of the Warrant Shares purchasable on such exercise at any time prior to
the  date of  expiration  of the  Warrants,  a new  certificate  evidencing  the
remaining  Warrant or  Warrants  will be issued to the Holder  thereof,  and the
Warrant Agent is hereby  authorized to countersign  and deliver the required new
Warrant  certificate or certificates  pursuant to the provisions of this Section
and Section 2 hereof.

                  5.3  Compliance  with  Government  Regulations.   The  Company
covenants  that if any  shares of  Common  Stock  required  to be  reserved  for
purposes of exercise of Warrants  require,  under any federal  securities law or
applicable  governing rule or regulation of any national  securities exchange or
over-the-counter  market,  registration  with or  approval  of any  governmental
authority,   or   listing  on  any  such   national   securities   exchange   or
over-the-counter market, the Company will in good faith prior to the issuance of
such shares  endeavor to cause such  shares to be duly  registered,  approved or
listed on the relevant national securities exchange or over-the-counter  market,
as the case may be. The Company covenants that it will use reasonable efforts to
obtain any required  approvals or registration under state "blue sky" securities
laws for the issuance of the Warrant Shares.



                                       4
<PAGE>

                  SECTION 6.  Payment of Taxes.  The Company will pay all stamp,
original issue,  transfer, or similar taxes, if any, attributable to the initial
issuance of Warrant  Shares upon the  exercise of Warrants;  provided,  however,
that the  Company  shall not be  required  to pay any tax or taxes  which may be
payable in respect of any  transfer  involved  in the issue or  delivery  of any
Warrants or  certificates  for  Warrant  Shares in a name other than that of the
Holder of such Warrants.

                  SECTION 7. Mutilated or Missing  Warrants.  In case any of the
certificates  evidencing  the  Warrants  shall be  mutilated,  lost,  stolen  or
destroyed,  the Company may in its discretion issue, and the Warrant Agent shall
countersign and deliver in exchange and substitution  for and upon  cancellation
of the mutilated Warrant certificate,  or in lieu of and in substitution for the
Warrant certificate lost, stolen or destroyed, a new Warrant certificate of like
tenor and representing an equivalent right or interest, but only upon receipt of
evidence  satisfactory to the Company and the Warrant Agent of such loss,  theft
or  destruction  of such Warrant and an indemnity or bond,  if  requested,  also
satisfactory  to them.  An applicant for such a substitute  Warrant  certificate
shall also  comply  with such other  reasonable  regulations  and pay such other
reasonable charges as the Company or the Warrant Agent may prescribe.

                  SECTION 8.   Reservation of Warrant Shares;
                                     Purchase and Cancellation of Warrants.

                  8.1  Reservation of Warrant  Shares.  Commencing June 20, 1996
(following  the filing by the Company of a Certificate  of Amendment  increasing
the Company's  authorized  shares of Common Stock to 20,000,000  shares),  there
shall have been reserved,  and the Company shall at all times keep reserved, out
of its authorized Common Stock, a number of shares of Common Stock sufficient to
provide  for  the  exercise  of  the  rights  of  purchase  represented  by  the
outstanding  Warrants.  The transfer  agent for the Common Stock (the  "Transfer
Agent")  and every  subsequent  transfer  agent for any shares of the  Company's
capital  stock  issuable  upon the  exercise  of any of the  rights of  purchase
aforesaid will be authorized and directed at all times to reserve such number of
authorized shares as shall be required for such purpose. The Company will keep a
copy of this Agreement on file with the Transfer Agent and with every subsequent
transfer  agent for any shares of the Company's  capital stock issuable upon the
exercise  of the rights of purchase  represented  by the  Warrants.  The Warrant
Agent is hereby  authorized to  requisition  from time to time from the Transfer
Agent  the  stock  certificates  required  to honor  outstanding  Warrants  upon
exercise  thereof in accordance  with the terms of this  Agreement.  The Company
will supply the Transfer Agent and any such subsequent  transfer agent with duly
executed  stock  certificates  for such  purposes.  The Company will furnish the
Transfer Agent and any such  subsequent  transfer agent a copy of all notices of
adjustments delivered by the Company to the Warrant Agent hereunder.

                                       5
<PAGE>

                  8.2  Purchase of Warrants by the  Company.  The Company  shall
have the right,  except as  limited  by law,  other  agreements  or  herein,  to
purchase or  otherwise  acquire  Warrants at such times,  in such manner and for
such consideration as it may deem appropriate.

                  8.3  Cancellation of Warrants.  In the event the Company shall
purchase or otherwise acquire Warrants, the same shall thereupon be delivered to
the Warrant  Agent and be cancelled by it and retired.  The Warrant  Agent shall
cancel any Warrant surrendered for exchange, substitution,  transfer or exercise
in whole or in part and such cancelled Warrant  Certificate shall be disposed of
by the Warrant Agent in a manner satisfactory to the Company.

                  SECTION  9.  Exercise  Price.  The  price per share at which a
Warrant Share shall be  purchasable  upon  exercise of a Warrant (the  "Exercise
Price") shall be $1.50, subject to adjustment as provided in Section 10 hereof.

                  SECTION 10. Adjustments. The Exercise Price and the number and
kind of  securities  subject to purchase upon the exercise of each Warrant shall
be subject to adjustment form time to time upon the happening of certain events,
as  hereinafter  set forth.  The  Aggregate  Warrant  Price with respect to each
Holder shall equal $1.50 multiplied by the number of Warrant Shares  represented
by the  certificate  evidencing  the  Warrants  issuable to a Holder on the date
hereof.

                  10.1  Adjustments.  (a) If,  at any time or from  time to time
after the issuance date of the  Warrants,  the Company shall issue or distribute
to the holders of shares of Common Stock evidence of its indebtedness, any other
securities  of the Company or any cash,  property or other  assets  (excluding a
subdivision,  combination  or  reclassification,  or  dividend  or  distribution
referred  to in Section  10.1(b),  and also  excluding  cash  dividends  or cash
distributions  paid out of net profits  legally  available  therefor in the full
amount   thereof,   which  together  with  the  value  of  other  dividends  and
distributions  made substantially  concurrently  therewith or pursuant to a plan
which  includes  payment  thereof,  is  equivalent  to not  more  than 5% of the
Company's net worth) (any such non-excluded event being herein called a "Special
Dividend"),  then the Exercise Price in effect immediately prior to the close of
business on the record date fixed for the  determination of holders of any class
of  securities  entitled to receive such Special  Dividend  shall be adjusted by
multiplying  the Exercise  Price then in effect by a fraction,  the numerator of
which shall be the then Current Market Price (as defined in paragraph (g) below)
of the Common Stock less the fair market value of the evidence of  indebtedness,
cash,  securities  or property,  or other assets issued or  distributed  in such
Special Dividend applicable to one share of Common Stock, and the denominator of
which shall be the then Current Market Price of the Common Stock.  An adjustment


                                       6
<PAGE>

made pursuant to this Section 10.1(a) shall become effective  immediately  after
the record date of any such Special Dividend.

                  (b) Except  for an event set forth in Section  10.1(e) in case
the Company  shall  hereafter (i) pay a dividend or make a  distribution  on its
capital stock in shares of Common Stock,  (ii) subdivide its outstanding  shares
of Common Stock into a greater number of shares,  (iii) combine its  outstanding
shares  of Common  Stock  into a  smaller  number  of  shares  or (iv)  issue by
reclassification of its Common Stock any shares of capital stock of the Company,
the Exercise Price in effect  immediately  prior to the close of business on the
record date fixed for such dividend or distribution, subdivision, combination or
reclassification  shall be adjusted to be equal to a fraction,  the numerator of
which shall be the Aggregate Warrant Price and the denominator of which shall be
the number of shares of Common Stock or other capital stock of the Company which
such Holder would have owned immediately following such action had such Warrants
been exercised  immediately  prior thereto.  An adjustment made pursuant to this
Subsection  10.1(b) shall become effective  immediately after the record date in
the case of a dividend or distribution  and shall become  effective  immediately
after  the  effective  date  in  the  case  of  a  subdivision,  combination  or
reclassification.

                 (c)(i) Except as provided in Sections  10.1(a) and 10.1(e),  in
case the Company shall hereafter issue or sell any Common Stock,  any securities
convertible  into Common  Stock or any  rights,  options or warrants to purchase
Common Stock or securities  convertible  into Common Stock, or set a record date
for the determination of holders of any securities  entitled to receive any such
issuance, in each case for a price per share or entitling the holders thereof to
purchase Common Stock at a price per share (determined by dividing (x) the total
amount,  if any,  received or receivable by the Company in  consideration of the
issuance  or sale of such  securities  plus  the  total  consideration,  if any,
payable  to  the  Company  upon  exercise  or  conversion  thereof  (the  "Total
Consideration")  by (y) the number of additional shares of Common Stock issuable
upon exercise or conversion of such securities) less than the greater of (x) the
Current  Market Price and (y) the then current  Exercise  Price in effect on the
record date for such  issuance or, if there is no record date,  the date of such
issuance or sale,  the  Exercise  Price shall be  adjusted  by  multiplying  the
Exercise Price then in effect by a fraction, the numerator of which shall be the
sum of (1) the  number of shares of Common  Stock  outstanding  on such issue or
sale date or record date and (2) the number of additional shares of Common Stock
which the Total  Consideration  would purchase at the greater of (x) the Current
Market Price or (y) the then current  Exercise  Price,  and the  denominator  of
which shall be the sum of (1) the number of shares of Common  Stock  outstanding
on such record date or, if there is no record  date,  immediately  prior to such
issue or sale and (2) the  number of  additional  shares  of Common  Stock to be
sold,  issued or issuable (or into which the convertible  securities to be sold,
issued or issuable are convertible). An adjustment


                                       7
<PAGE>

pursuant to this Section  10.1(c) shall be made  successively  whenever an event
described in this Section 10.1(c) shall occur and shall become  effective on the
record date for the  determination  of holders entitled to receive such issuance
or if  there is no  record  date,  immediately  after  the date of such  sale or
issuance.

                           (ii) For  purposes of this  Section  10.1(c),  in the
event the Company shall assume,  amend or modify the terms of any right, option,
warrant or convertible security,  for purposes of determining an adjustment,  if
any, to the Exercise Price, if any, pursuant to this Section 10.1(c) such right,
option,  warrant or  convertible  security shall be deemed issued or sold on the
date of such assumption or amendment or modification.

                           (iii) No further  adjustment  to the  Exercise  Price
shall be made upon the  subsequent  issue or sale of  shares of Common  Stock or
convertible securities or upon the exercise of such rights, options or warrants,
or the conversion of such  convertible  securities;  provided that to the extent
that shares of Common Stock are not delivered (or  securities  convertible  into
Common Stock are not delivered)  after the expiration of any rights,  options or
warrants to purchase Common Stock or securities  convertible  into Common Stock,
the Exercise Price shall be readjusted to the Exercise Price which would then be
in  effect  had the  adjustments  made  upon  the  issuance  of such  securities
convertible  into Common  Stock or any  rights,  options or warrants to purchase
Common  Stock or  securities  convertible  into Common  Stock been made upon the
basis of  delivery of only the number of shares of Common  Stock (or  securities
convertible into Common Stock) actually delivered.

                 (d) No  adjustment  in the Exercise  Price shall be required in
the case of the issuance by the Company of Common Stock pursuant to the exercise
of these  Warrants  or the  issuance of shares of Common  Stock  pursuant to the
option,  warrants,  rights,  convertible  securities  and contracts set forth in
Section  3.2 of the  Subscription  and  Registration  Rights  Agreement  as such
option, warrants,  rights, convertible securities and contracts are in effect on
the date hereof.

                 (e) In case of any capital  reorganization or  reclassification
(other than a change in par value),  or any consolidation or merger to which the
Company is a party,  or in case of any sale or conveyance  to another  entity of
the property of the Company as an entirety or substantially as an entirety,  the
Warrants  shall  after  such  reorganization,  reclassification,  consolidation,
merger, sale or conveyance be exercisable,  upon the terms and conditions of the
Warrants,  for the kind and amount of  securities,  cash or other property which
the Holder would have owned or have been entitled to receive  immediately  after
such reorganization, reclassification, consolidation, merger, sale or conveyance
had the Warrants been exercised  immediately prior to the effective date of such
reorganization, reclassification,  consolidation, merger, sale or conveyance and
in any such case, if necessary,  the provisions set forth in this Section 3 with
respect to the rights and  interests  thereafter  of the Holders of the Warrants
shall  be  appropriately  adjusted  so as to be  applicable,  as  nearly  as may
reasonably be, to any shares of stock or other securities or property thereafter
deliverable  on the  exercise  of the  Warrants.  The above  provisions  of this
Section   10.1   shall   similarly   apply   to   successive    reorganizations,
reclassifications, consolidations, mergers, sales or


                                       8
<PAGE>

conveyances.  The  subdivision  or  combination of shares of Common Stock at any
time  outstanding  into a greater or lesser number of shares shall not be deemed
to be a  reclassification  of the Common  Stock for the purposes of this Section
10.1(e). The Company shall not effect any such reorganization, reclassification,
consolidation, merger, sale or conveyance unless prior to or simultaneously with
the consummation  thereof the successor  corporation (if other than the Company)
resulting from such  transaction or the  corporation  purchasing  such assets or
other  appropriate  corporation  or entity shall assume,  by written  instrument
executed and delivered to the Holders,  the obligation to deliver to the Holders
such shares of stock,  securities or assets as, in accordance with the foregoing
provisions,  such Holders may be entitled to purchase and the other  obligations
under the  Warrants.  The issuer of any shares of stock or other  securities  or
property  thereafter  deliverable  on the  exercise  of the  Warrants  shall  be
responsible for all of the agreements and obligations of the Company  hereunder.
Notice of any such reorganization, reclassification, consolidation, merger, sale
or conveyance and of said provisions so proposed to be made,  shall be mailed to
the Holders not less than 30 days prior to such event.

                 (f) For purposes of any  computation  respecting  consideration
received  pursuant to Sections  10.1(a),  (b) or (c) above,  the following shall
apply:

                           (i) in the case of the  issuance  of shares of Common
Stock for cash,  the  consideration  shall be the amount of such cash,  provided
that in no case shall any  deduction be made for any  commissions,  discounts or
other  expenses  incurred by the Company  for any  underwriting  of the issue or
otherwise in connection therewith; and

                           (ii) in the case of the  issuance of shares of Common
Stock for a consideration in whole or in part other than cash, the consideration
other  than  cash  shall  be  deemed  to be the fair  market  value  thereof  as
determined in good faith by the Board of Directors of the Company  (irrespective
of the accounting treatment thereof), whose determination shall be conclusive.

                 (g) For purposes hereof,  the Current Market Price per share of
Common Stock at any date shall be deemed to be the average of the daily  closing
prices for 30 consecutive  trading days ending on the date immediately  prior to
such date, and if the Common Stock is no longer listed on a national  securities


                                       9
<PAGE>

exchange or  over-the-counter  market, the Current Market Price (and the closing
price  per  share  in  Section  5.2)  shall  be as  determined  by the  Board of
Directors.

                 (h) In  the  event  of any  adjustment  to the  Exercise  Price
pursuant to this Section 10.1, the number of Warrant Shares shall be adjusted by
dividing the Aggregate Warrant Price by the Exercise Price in effect immediately
after such adjustment.

                 (i) In case  any  event  shall  occur  as to  which  the  other
provisions of this Section 10.1 are not strictly  applicable but as to which the
failure to make any  adjustment  would not fairly  protect the  purchase  rights
represented  by the  Warrants  in  accordance  with  the  essential  intent  and
principles hereof then, in each such case, the Holders representing the right to
purchase  a  majority  of the shares of Common  Stock and other  securities  and
properties  receivable  upon the  exercise of the Warrants may appoint a firm of
independent  public  accountants  of  recognized  national  standing  reasonably
acceptable to the Company,  which shall give their opinion as to the adjustment,
if  any,  on a  basis  consistent  with  the  essential  intent  and  principles
established  herein,  necessary to preserve the purchase  rights  represented by
these Warrants.  Upon receipt of such opinion,  the Company will promptly mail a
copy thereof to the Holders and shall make the  adjustments  described  therein.
The fees and expenses of such independent  public  accountants shall be borne by
the Company.

                 (j) No  adjustment  in the  Exercise  Price  shall be  required
unless such  adjustment  would require an increase or decrease of at least $0.05
per share of Common Stock;  provided,  however,  that any  adjustments  which by
reason of this  Section  10.1(j)  are not  required  to be made shall be carried
forward and taken into account in any subsequent adjustment;  provided, further,
however,  that  adjustments  shall be required and made in  accordance  with the
provisions of this Section 10.1 (other than this Section 10.1(j)) not later than
such time as may be  required in order to preserve  the  tax-free  nature of any
distribution  to the Holders or Common Stock  issuable  upon the exercise of the
Warrants.  All calculations under this Section 10.1 shall be made to the nearest
cent or to the nearest  1/100th of a share, as the case may be. Anything in this
Section 10.1 to the contrary  notwithstanding,  the Company shall be entitled to
make such  reductions in the Exercise  Price,  in addition to those  required by
this Section 10.1, as it in its  discretion  shall deem to be advisable in order
that any stock  dividend,  subdivision  of shares or  distribution  of  options,
rights  or  warrants  to  purchase  stock or  securities  convertible  for stock
hereafter  made by the Company to its  holders of the Common  Stock shall not be
taxable.

                 (k) Whenever the Exercise Price is adjusted as provided in this
Section  10.1 and upon any  modification  of the rights of the  Holders of these
Warrants in accordance with this Section 10.1, the Company shall promptly


                                       10
<PAGE>

but in no event later than ten days after any request for an  adjustment  by the
Holder,  obtain, at its expense,  a certificate of a firm of independent  public
accountants of recognized  standing  selected by the Board of Directors (who may
be the regular auditors of the Company) setting forth the Exercise Price and the
number of shares of Common Stock and other securities and properties  receivable
upon  exercise  of the  Warrants  after  such  adjustment  or the effect of such
modification,  a brief  statement  of the facts  requiring  such  adjustment  or
modification  and the  manner of  computing  the same and  cause  copies of such
certificate to be mailed to the Holders of the Warrants.

                 (l) If,  as a result of an  adjustment  made  pursuant  to this
Section  10.1,  the Holder  thereafter  surrendered  for  exercise  shall become
entitled to receive  shares of two or more classes of capital stock or shares of
Common  Stock and other  capital  stock of the  Company,  the Board of Directors
(whose  determination  shall be  conclusive  and shall be described in a written
notice to the  Holder  promptly  after  such  adjustment)  shall  determine  the
allocation  of the  adjusted  Exercise  Price  between  or among  shares or such
classes of capital stock or shares of Common Stock and other capital  stock.  In
the event that at any time, as a result of an  adjustment  made pursuant to this
Section  10.1,  the holder of any  Warrant  thereafter  exercised  shall  become
entitled to receive any shares of capital stock of the Company other than shares
of Common Stock,  thereafter the number of such other shares so receivable  upon
exercise of the Warrants  shall be subject to adjustment  from time to time in a
manner and on terms as nearly  equivalent as practicable to the provisions  with
respect  to the  shares of Common  Stock  contained  in  Section  10.1,  and the
remainder  of the terms of the  Warrants  shall  apply on like terms to any such
other shares.


                  10.2 Notice of  Adjustment.  Whenever  the  Exercise  Price is
adjusted, as herein provided, the Company shall cause the Warrant Agent promptly
to give  notice  to the  Holders  as  provided  in  Section  17  hereof  of such
adjustment or  adjustments  and shall deliver to the Warrant Agent a certificate
setting forth the Exercise  Price after such  adjustment,  setting forth a brief
statement  of  the  facts  requiring  such  adjustment  and  setting  forth  the
computation  by which such  adjustment  was made.  The  Warrant  Agent  shall be
entitled  to  rely  on  such   certificate   and  shall  be  under  no  duty  or
responsibility with respect to any such certificate, except to exhibit the same,
from  time  to  time,  to any  Holder  desiring  an  inspection  thereof  during
reasonable  business hours. The Warrant Agent shall not at any time be under any
duty or responsibility to any Holders to determine whether any facts exist which
may  require any  adjustment  of the  Exercise  Price or other stock or property
purchasable on the exercise thereof,  or with respect to the nature or extent of
any such  adjustment when made, or with respect to the method employed in making
such adjustment.

                                       11
<PAGE>

                 10.3 Statement on Warrants.  Irrespective of any adjustments in
the Exercise Price or the number or kind of shares or other property purchasable
upon the exercise of the Warrants or other  amendments to or corrections of this
Agreement, Warrants theretofore or thereafter issued may continue to express the
same price and number and kind of shares as are stated in the Warrants initially
issuable pursuant to this Agreement.

                  SECTION  11.  No Rights as  Stockholders;  Notice to  Holders.
Nothing contained in this Agreement or in any of the Warrants shall be construed
as  conferring  upon the  Holders or their  transferees  the right to vote or to
receive  dividends or to consent or to receive notice as stockholders in respect
of any meeting of  stockholders  for the election of directors of the Company or
any other matter,  or any rights  whatsoever as stockholders of the Company.  If
the Board of  Directors  of the  Company  shall set a record date for any action
which would  require an  adjustment  pursuant  to Section 10, the Company  shall
cause the Warrant  Agent to mail notice  thereof to the Holders of the  Warrants
not less than 10 days prior to the record date with respect to any such action.

                  SECTION 12.  Disposition  of Proceeds on Exercise of Warrants;
Inspection of Warrant Agreement. The Warrant Agent shall account promptly to the
Company with respect to Warrants  exercised and  concurrently pay to the Company
all monies  received by the Warrant Agent for the purchase of the Warrant Shares
through the exercise of such Warrants.

                  The Warrant Agent shall keep copies of this  Agreement and any
notices  given or received  hereunder  available  for  inspection by the Holders
during normal business hours at its principal  office.  The Company shall supply
the Warrant Agent from time to time with such number of copies of this Agreement
as the Warrant Agent may request.

                  SECTION  13.  Merger  or  Consolidation  or  Change of Name of
Warrant  Agent.  Any  corporation  into which the Warrant Agent may be merged or
with which it may be consolidated,  or any corporation resulting from any merger
or consolidation to which the Warrant Agent shall be a party, or any corporation
succeeding to substantially  all of the business of the Warrant Agent,  shall be
the successor to the Warrant Agent hereunder  without the execution or filing of
any paper or any further act on the part of any of the parties hereto,  provided
that such corporation  would be eligible for appointment as a successor  Warrant
Agent  under the  provisions  of  Section  15  hereof.  In case at the time such
successor  to the  Warrant  Agent  shall  succeed to the agency  created by this
Agreement any of the Warrants shall have been  countersigned  but not delivered,
any such  successor to the Warrant Agent may adopt the  countersignature  of the


                                       12
<PAGE>

original Warrant Agent and deliver such Warrants so  countersigned;  and in case
at that  time  any of the  Warrants  shall  not  have  been  countersigned,  any
successor to the Warrant Agent may countersign  such Warrants either in the name
of the predecessor  Warrant Agent or in the name of the successor Warrant Agent;
and in any such cases such  Warrants  shall have the full force  provided in the
Warrants and in this Agreement.

                  In case at any  time the name of the  Warrant  Agent  shall be
changed and at such time any of the Warrants shall have been  countersigned  but
not delivered, the Warrant Agent may adopt the countersignatures under its prior
name and deliver such Warrants so countersigned; and in case at that time any of
the  Warrants  shall  not  have  been  countersigned,   the  Warrant  Agent  may
countersign  such Warrants  either in its prior name or in its changed name; and
in all such  cases such  Warrants  shall  have the full  force  provided  in the
Warrants and in this Agreement.

                  SECTION 14.  Concerning the Warrant  Agent.  The Warrant Agent
undertakes  the  duties  and  obligations  imposed  by this  Agreement  upon the
following terms and conditions,  by all of which the Company and the Holders, by
their acceptance of Warrants, shall be bound.

                  14.1  Correctness  of  Statements.  The  statements  contained
herein and in the Warrants  shall be taken as  statements of the Company and the
Warrant Agent assumes no  responsibility  for the correctness of any of the same
except such as describe  the  Warrant  Agent or action  taken by it. The Warrant
Agent assumes no responsibility with respect to the distribution of the Warrants
except as otherwise provided herein.

                  14.2  Breach of  Covenants.  The  Warrant  Agent  shall not be
responsible  for any failure of the Company to comply with any of the  covenants
of the Company contained in this Agreement or in the Warrant.

                  14.3 Reliance on Counsel. The Warrant Agent may consult at any
time with legal counsel  satisfactory to it (who may be counsel for the Company)
and the Warrant Agent shall incur no liability or  responsibility to the Company
or to any  Holder in  respect of any  action  taken,  suffered  or omitted by it
hereunder in good faith and in accordance with the opinion or the advice of such
counsel.

                  14.4 Proof of Actions  Taken.  Whenever in the  performance of
its duties  under this  Agreement  the Warrant  Agent shall deem it necessary or
desirable  that any fact or matter be proved or established by the Company prior
to taking or suffering any action  hereunder,  such fact or matter (unless other
evidence in respect thereof be herein  specifically  prescribed and except for a
notice  pursuant to Section  10.2) may be deemed  conclusively  to be proved and
established  by a certificate  signed by an officer of the Company and delivered


                                       13
<PAGE>

to the Warrant Agent;  and such certificate  shall be full  authorization to the
Warrant  Agent for any action  taken or  suffered  in good faith by it under the
provisions of this Agreement in reliance upon such certificate.

                  14.5 Compensation and  Indemnification.  The Company agrees to
pay the Warrant Agent reasonable  compensation for all services  rendered by the
Warrant  Agent  in the  performance  of its  duties  under  this  Agreement,  to
reimburse the Warrant Agent for all expenses, taxes and governmental charges and
other charges of any kind and nature reasonably incurred by the Warrant Agent in
the performance of its duties under this Agreement, and to indemnify the Warrant
Agent and save it harmless against any and all liabilities, including judgments,
costs and  reasonable  counsel fees, for anything done or omitted by the Warrant
Agent in the  performance of its duties under this Agreement  except as a result
of the Warrant  Agent's gross  negligence or bad faith.  In connection with such
indemnification,  the Company  shall be entitled to conduct any  litigation  and
shall  only be  required  to pay the  reasonable  costs and fees of one  counsel
selected by the Company.  The Warrant Agent will cooperate in the defense of any
such action and will not settle such action without the consent of the Company.

                  14.6 Other Transactions in Securities of Company.  The Warrant
Agent and any  stockholder,  director,  officer or employee of the Warrant Agent
may buy, sell or deal in any of the Warrants or other  securities of the Company
or become pecuniarily  interested in any transaction in which the Company may be
interested  or contract  with or lend money to the Company or  otherwise  act as
fully and freely as though the Warrant  Agent was not  Warrant  Agent under this
Agreement.  Nothing  herein shall  preclude the Warrant Agent from acting in any
other  capacity  for the  Company  or for any legal  entity  including,  without
limitation, acting as a lender to the Company or an affiliate thereof.

                  14.7 Liability of Warrant  Agent.  The Warrant Agent shall act
hereunder  solely as the agent of the Company and its duties shall be determined
solely by the  provisions  hereof.  The  Warrant  Agent  shall not be liable for
anything which it may do or refrain from doing in connection with this Agreement
except for its own gross negligence or bad faith.  Anything in this Agreement to
the contrary notwithstanding,  in no event shall the Warrant Agent be liable for
special, indirect or consequential loss or damage whatsoever (including, but not
limited to, lost  profits)  even if the  Warrant  Agent has been  advised of the
likelihood of such loss or damage and regardless of the form of action.

                  14.8 Reliance on  Documents.  The Warrant Agent will not incur
any liability or  responsibility  to the Company or to any Holder for any action
taken  in  reliance  on  any  notice,   resolution,   waiver,   consent,  order,
certificate, or other paper, document or instrument reasonably believed by it to
be genuine and to have been  signed,  sent or  presented  by the proper party or
parties.

                                       14
<PAGE>

                  14.9  Validity of  Agreement.  The Warrant  Agent shall not be
under any  responsibility  in respect of the  validity of this  Agreement or the
execution and delivery  hereof  (except the due execution  hereof by the Warrant
Agent) or in respect of the  validity and  execution of any Warrant  (except its
countersignature  thereof);  nor shall the Warrant Agent by any act hereunder be
deemed  to make  any  representation  or  warranty  as to the  authorization  or
reservation of any Warrant Shares (or other stock) to be issued pursuant to this
Agreement or any Warrant,  or as to whether any Warrant  Shares (or other stock)
will, when issued, be validly issued, fully paid and nonassessable, or as to the
Exercise Price or the number or amount of Warrant Shares or other  securities or
other property issuable upon exercise of any Warrant.

                  14.10  Instructions from Company.  The Warrant Agent is hereby
authorized and directed to accept  instructions  with respect to the performance
of its duties hereunder from the Chairman of the Board, the President, the Chief
Financial Officer,  any Vice Chairman of the Board, or any Executive,  Senior or
other  Vice  President  of the  Company  or any other  employee  of the  Company
expressly  authorized  in writing by any of such persons as having the authority
to deliver  instructions  hereunder,  and to apply to such officers or employees
for advice or  instructions  in  connection  with its  duties,  and shall not be
liable  for any  action  taken or  suffered  to be taken by it in good  faith in
accordance with instructions of any such officers or employees.

                  SECTION 15.  Change of Warrant  Agent.  The Warrant  Agent may
resign and be discharged  from its duties under this  Agreement by giving to the
Company 30 days'  notice in writing.  The  Warrant  Agent may be removed by like
notice to the Warrant Agent from the Company.  If the Warrant Agent shall resign
or be removed or shall otherwise become  incapable of acting,  the Company shall
appoint a successor to the Warrant Agent. If the Company shall fail to make such
appointment  within a period of 30 days after such  removal or after it has been
notified  in writing of such  resignation  or  incapacity  by the  resigning  or
incapacitated  Warrant Agent or by any Holder (who shall with such notice submit
his Warrant for  inspection  by the  Company),  then any Holder may apply to any
court  of  competent  jurisdiction  located  in  Hartford,  Connecticut  for the
appointment  of a  successor  to the Warrant  Agent.  Pending  appointment  of a
successor to the Warrant  Agent,  either by the Company or by such a court,  the
duties of the Warrant  Agent shall be carried out by the Company.  Any successor
Warrant Agent, whether appointed by the Company or such a court, shall be a bank
or trust company,  in good standing,  incorporated  under the laws of the United
States of America or any state thereof and having at the time of its appointment
as Warrant Agent a combined  capital and surplus of at least  $5,000,000.  After
appointment,  the successor  Warrant Agent shall be vested with the same powers,
rights,  duties  and  responsibilities  as if it had  been  originally  named as
Warrant Agent without  further act or deed;  but the former  warrant agent shall
deliver and  transfer to the  successor  warrant  agent any property at the time
held by it hereunder, and execute and deliver any further assurance, conveyance,


                                       15
<PAGE>

act or deed necessary for the purpose.  Failure to file any notice  provided for
in this  Section  15,  however,  or any  defect  therein,  shall not  affect the
legality or validity of the  resignation  or removal of the warrant agent or the
appointment of the successor  warrant agent, as the case may be. In the event of
such  resignation or removal,  the successor  warrant agent shall mail, by first
class mail, postage prepaid,  to each Holder,  written notice of such removal or
resignation and the name and address of such successor warrant agent.

                  SECTION 16.  Identity of Transfer  Agent.  Forthwith  upon the
appointment of any subsequent  transfer agent for the Common Stock, or any other
shares of the Company's capital stock issuable upon exercise of the Warrant, the
Company will file with the Warrant Agent a statement  setting forth the name and
address of such subsequent transfer agent.

                  SECTION 17. Notices.  Any notice pursuant to this Agreement by
the Company or by any Holder to the Warrant Agent, or by the Warrant Agent or by
any Holder to the Company, shall be in writing and shall be delivered in person,
by overnight  courier,  or by facsimile  transmission  (with hard copy to follow
promptly by first  class mail or  overnight  courier),  or mailed  first  class,
postage  prepaid  (a) to the  Company  at its  offices  1200  High  Ridge  Road,
Stamford,  Connecticut 06905, fax: (203) 329-0557, Attention:  President; or (b)
to the Warrant Agent its corporate  office,  40 Wall Street,  New York, New York
10005.  Each party  hereto may from time to time change the address as facsimile
numbers to which notices to it are to be delivered or mailed hereunder by notice
to the other party.

                  Any notice required to be mailed pursuant to this Agreement by
the Company or the Warrant Agent to the Holders shall be in writing and shall be
mailed first class, postage prepaid, or otherwise delivered,  to such Holders at
their respective  addresses on the books of the Warrant Agent. Any other notices
which the Company or the Warrant  Agent may wish to provide to the Holder may be
made in such  manner  (including  by  publication  in a  newspaper  of  national
circulation)  as the Company or the  Warrant  Agent,  as the case may be,  shall
elect.  Any  notice  requested  by any other  person  may be  dispatched  in the
discretion of the Warrant  Agent,  but at no expense to the Warrant Agent or the
Company.

                  SECTION 18.  Supplements and  Amendments.  The Company and the
Warrant Agent may from time to time  supplement or amend this Agreement  without
the  approval  of any  Holder in order to cure any  ambiguity  or to  correct or
supplement any provision contained herein which may be defective or inconsistent
with any other provision  herein,  or to make any other  provisions in regard to
matters or questions  arising  hereunder which the Company and the Warrant Agent
may deem  necessary  or  desirable,  which  shall  not  adversely  affect in any
material  manner the interest of the Holders.  The Company and the Warrant Agent


                                       16
<PAGE>

may from time to time  supplement  or amend this  Agreement in any other respect
with the  written  consent of the  Holders  of not less than a  majority  of the
Warrants then outstanding;  provided,  however,  that no change in the number or
nature of the  securities  purchasable  upon the  exercise  of any  Warrant,  or
increase in the Exercise Price of any Warrant, or acceleration of the Expiration
Date of any Warrant,  shall be made without the written consent of the Holder of
such  Warrant,  other than such changes as are  specifically  prescribed by this
Agreement as originally executed or are made in compliance with applicable law.

                  SECTION 19.  Successors.  All the covenants and  provisions of
this  Agreement by or for the benefit of the Company or the Warrant  Agent shall
bind and  inure  to the  benefit  of their  respective  successors  and  assigns
hereunder.

                  SECTION 20.  Applicable  Law. This  Agreement and each Warrant
issued  hereunder shall be governed by and construed in accordance with the laws
of the State of New York applicable to contracts made and to be performed within
such State, without giving effect to principles of conflicts of laws.

                  SECTION  21.  Benefits  of  this  Agreement.  Nothing  in this
Agreement shall be construed to give to any person or corporation other than the
Company, the Warrant Agent, and the Holders any legal or equitable right, remedy
or  claim  under  this  Agreement;  this  Agreement  shall  be for the  sole and
exclusive  benefit of the  Company,  the  Warrant  Agent and the  Holders of the
Warrants.

                  SECTION 22.  Counterparts.  This  Agreement may be executed in
counterparts and by facsimile and each of such counterparts and facsimile copies
shall for all  purposes be deemed to be an original,  and all such  counterparts
shall together constitute but one and the same instrument.

                  SECTION  23.  Severability.  Any  term  or  provision  of this
Agreement which is invalid or  unenforceable  in any  jurisdiction  shall, as to
that  jurisdiction,   be  ineffective  to  the  extent  of  such  invalidity  or
unenforceability  without rendering invalid or unenforceable the remaining terms
and provisions of this Agreement or affecting the validity or  enforceability of
any of the terms or provisions of this Agreement in any other  jurisdiction.  If
any  provision  of  this  Agreement  is so  broad  as to be  unenforceable,  the
provision shall be interpreted to be only so broad as is enforceable.




                                       17
<PAGE>


                 SECTION  24.  Captions.   The  captions  of  the  Sections  and
subsections of this Agreement have been inserted for convenience  only and shall
have no substantive effect.

                  IN WITNESS  WHEREOF,  the  parties  hereto  have  caused  this
Agreement to be duly executed, all as of the day and year first above written.


                                      VIMRx PHARMACEUTICALS INC.



                                      By:   /s/ Richard L. Dunning
                                      Name:  Richard L. Dunning
                                      Title: President and Chief Executive
                                             Officer


                                     AMERICAN STOCK TRANSFER
                                     & TRUST COMPANY



                                        By:   /s/ Herbert J. Lemmer
                                        Name:  Herbert J. Lemmer
                                        Title:  Vice President


                                       18
<PAGE>
                                                                  Exhibit A





                           Form of Warrant Certificate
                                    (obverse)




              EXERCISABLE ONLY ON OR AFTER JUNE 21, 1996 AND ON OR
              BEFORE 5:00 P.M. NEW YORK CITY TIME ON JUNE 20, 2006

NUMBER
VPW: ________                                                 WARRANTS: ________



                                                                SEE REVERSE SIDE
                                                                 FOR DEFINITIONS

         COMMON STOCK
SUBSCRIPTION WARRANTS                                          CUSIP 927186 13 0

              Incorporated Under the Laws of The State of Delaware


                           VIMRx PHARMACEUTICALS, INC.


This certifies that FOR VALUE RECEIVED






or registered  assigns (the  "Registered  Holder") is the owner of the number of
Common Stock  Subscription  Warrants  (the  "Warrants")  specified  above.  Each
Warrant  initially  entitles the Registered  Holder to purchase,  subject to the
terms and  conditions  set forth in this  Warrant  Certificate  and the  Warrant
Agreement (as hereinafter  defined),  one fully paid and nonassessable  share of
Common Stock,  $.001 par value (the "Common  Stock"),  of VIMRx  Pharmaceuticals
Inc., a Delaware corporation (the "Company"),  at any time between June 21, 1996
and 5:00 p.m.  (New York City time) on June 20,  2006 (the  "Expiration  Date"),
upon surrender of this Warrant  Certificate  with the  Subscription  Form on the
reverse hereof duly executed, at the principal office of American Stock Transfer
& Trust  Company,  as Warrant  Agent,  or its successor  (the "Warrant  Agent"),
accompanied by payment of $1.50 per Warrant (the "Exercise  Price") by certified
or official  bank check made payable to the Warrant Agent for the account of the
Company.


                                       19
<PAGE>


                  This Warrant  Certificate and each Warrant  represented hereby
are  issued  pursuant  to and are  subject  in all  respects  to the  terms  and
conditions set forth in the Warrant Agreement (the "Warrant  Agreement"),  dated
as of June 17, 1996, by and between the Company and the Warrant Agent. A copy of
the Warrant  Agreement  may be obtained by the  Registered  Holder upon  written
request to the Company.

                  Upon the  occurrence  of certain  events  provided  for in the
Warrant  Agreement,  the  Exercise  Price and the number and kind of  securities
subject to purchase  upon the  exercise of each Warrant  represented  hereby are
subject to adjustment.

                  Each Warrant  represented  hereby is exercisable at the option
of the  Registered  Holder,  but no  fractional  shares of Common  Stock will be
issued. In the case of the exercise of less than all of the Warrants represented
hereby, the Company shall execute a new Warrant  Certificate,  which the Warrant
Agent shall countersign and deliver, for the balance of such Warrants.

                  This Warrant  Certificate is exchangeable,  upon the surrender
hereof by the  Registered  Holder at the principal  office of the Warrant Agent,
for a new Warrant Certificate or Warrant Certificates  entitling such Registered
Holder to  purchase a like  aggregate  number of shares of Common  Stock as this
Warrant  Certificate  entitles such Registered Holder to purchase.  A Registered
Holder desiring to exchange this Warrant  Certificate shall make such request in
writing delivered to the Warrant Agent, and shall surrender,  properly endorsed,
this Warrant Certificate to be so exchanged.  Thereupon, the Warrant Agent shall
countersign  and deliver to the Registered  Holder a new Warrant  Certificate or
Warrant  Certificates as so requested,  in the name of such  Registered  Holder,
subject to the  limitations  provided in the Warrant  Agreement.  No  fractional
Warrant Certificate shall be issued and no new Warrant Certificate entitling the
Registered Holder thereof to purchase fractional shares will be issued.

                  Prior to the exercise of any Warrant  represented  hereby, the
Registered  Holder shall not be entitled to any rights of a  stockholder  of the
Company,  including,  without  limitation,  the  right  to  vote  or to  receive
dividends, and shall not be entitled to receive any notice of any proceedings of
the Company, except as provided in the Warrant Agreement.

                  The  Company  and the  Warrant  Agent  may deem and  treat the
Registered Holder as the absolute owner hereof  (notwithstanding any notation of


                                       20
<PAGE>

ownership or other writing hereon made by anyone) for all purposes and shall not
be affected by any notice to the contrary.

                  This Warrant Certificate is not valid unless  countersigned by
the Warrant Agent.

                  IN  WITNESS  WHEREOF,  the  Company  has caused  this  Warrant
Certificate  to be  duly  executed,  manually  or in  facsimile,  by  two of its
officers  thereunto duly  authorized and a facsimile of its corporate seal to be
imprinted thereon.

                           VIMRx PHARMACEUTICALS INC.



                                              By:_____________________________  
                                                   Secretary



                                               By:____________________________
                                                  President and Chief Executive
                                                  Officer

COUNTERSIGNED:

AMERICAN STOCK TRANSFER & TRUST COMPANY, as Warrant Agent



By:____________________________
   Authorized Officer




                                       21
<PAGE>



                                    (Reverse)



                  The following  abbreviations,  when used in the inscription on
the face of this certificate, shall be construed as though they were written out
in full according to applicable laws or regulations:

TEN COM -  as tenants in common         UNIF GIFT MIN ACT-______Custodian_______
TEN ENT -  as tenants by the entireties                   (Cust)         (Minor)
JT TEN  -  as joint tenants with right             under Uniform Gifts to  Minor
           of survivorship and not as tenants      Act__________________
           in common                                        (State)

             Additional  abbreviations  may also be used though not in the above
list.


                                SUBSCRIPTION FORM
                 (To be executed only upon exercise of Warrant)

                  The  undersigned  hereby  irrevocably  elects to exercise  the
right of purchase  represented  by the within  Warrant  Certificate  for, and to
purchase  thereunder,  shares of Common  Stock,  as provided  for  therein,  and
tenders  herewith  payment  of the  purchase  price  in  full  in the  form of a
certified or official bank check in the amount of $

                  Please issue a certificate or certificates  for such shares of
Common Stock in the name of:



                                     Name_______________________________________
                                     (Please Print Name, Address and Social
                                     Security or Taxpayer Identification Number)

                                         _______________________________________
                                         

                                         _______________________________________


                                         _______________________________________


                                         _______________________________________


                                       22
<PAGE>








And, if said number of shares shall not be all the shares  purchasable under the
within  Warrant  Certificate,  a new Warrant  Certificate is to be issued in the
name of said  undersigned  for the balance  remaining of the shares  purchasable
thereunder.



                              Signature ________________________________________
                              Note:     The above signature must correspond
                              exactly with the name on the face of this Warrant
                              Certificate or with the name of assignee appearing
                              in the assignment form below.


- --------------------------------------------
Signature                            Guarantee  Signatures  should be guaranteed
                                     by an eligible guarantor  institution which
                                     is  a  member  of  a  signature   guarantee
                                     program satisfactory to the Warrant Agent.


                                   ASSIGNMENT
                (To be executed only upon assignment of Warrant)

  FOR VALUE RECEIVED, the undersigned hereby sells, assigns and transfers unto

         PLEASE INSERT SOCIAL SECURITY OR OTHER
             IDENTIFYING NUMBER OF ASSIGNEE

         [                     ]


________________________________________________________________________________
          (Name and Address of Assignee Must Be Printed or Typewritten)


________________________________________________________________________________
the within Warrant Certificate, hereby irrevocably constituting and appointing


_____________________________________________________________________ , Attorney
to transfer  said Warrant  Certificate  on the books of the  Company,  with full
power of substitution in the premises.


Dated:_________________________________           ______________________________
                                                  Signature of Registered Holder

                                          Note:     The above signature must 
                                                    correspond exactly with the 
                                                    name on the face of this 
                                                    Warrant Certificate.
- ------------------------------------
Signature                                           Guarantee  Signatures should
                                                    be guaranteed by an eligible
                                                    guarantor  institution which
                                                    is a member  of a  signature
                                                    guarantee            program
                                                    satisfactory  to the Warrant
                                                    Agent.


                                       23
<PAGE>



                                                                    Exhibit 5.1

                          EPSTEIN BECKER & GREEN, P.C.
                                 250 PARK AVENUE
                            NEW YORK, NEW YORK 10177




                                 (212) 351-4500








                                 (212) 351-4735




                                 April 14, 1997







VIMRx Pharmaceuticals Inc.
2751 Centerville Road
Suite 210
Wilmington, Delaware 19808


Gentlemen:

                  We have acted as counsel to VIMRx  Pharmaceuticals  Inc.  (the
"Company") in connection with its filing of a registration statement on Form S-3
(which  registration  statement,  as amended at the time of its effectiveness is
hereinafter called the "Registration Statement") relating to the registration of
(i) 5,999,991 shares (the "Placement  Shares") of Common Stock, $.001 par value,
of the Company  ("Common  Stock") and (ii) 2,399,993  Common Stock  Subscription
Warrants (the  "Warrants")  and 2,399,993  shares of Common Stock  issuable upon
exercise of the Warrants (the "Warrant Shares").

VIMRx Pharmaceuticals Inc.
April 14, 1997
Page 2


                  As such counsel,  we have examined  original copies, or copies
certified  to  our  satisfaction,  of the  corporate  records  of  the  Company,
agreements  and other  instruments,  certificates  of public  officials and such
other  documents as we deemed  necessary as a basis for the opinion  hereinafter
set forth.

                  On the basis of the foregoing, we are of the opinion that:

                           (i)     the  Placement  Shares have been  validly  
                                   authorized,  and are legally issued, fully 
                                   paid and non-assessable; and

                           (ii)    the  Warrants  constitute  legal,  valid  and
                                   binding  obligations of the Company,  and the
                                   Warrant Shares,  upon issuance and payment in
                                   accordance  with the  terms of the  Warrants,
                                   will  be  legally  issued,   fully  paid  and
                                   non-assessable.

                  We hereby  consent to the filing of this opinion as an exhibit
to the  Registration  Statement and the  reference  made to us under the caption
"Legal  Matters"  in the  prospectus  constituting  part  of  such  Registration
Statement.

                                              Very truly yours,

                                              EPSTEIN BECKER & GREEN, P.C.



                                               By:  /s/ Sidney Todres
                                                   Sidney Todres




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