ENTROPIN INC
SB-2, 1998-05-04
MANAGEMENT SERVICES
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       As filed with the Securities and Exchange Commission on May 4, 1998

                                                  Registration No. 333 -_______
- --------------------------------------------------------------------------------

                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549


                                    FORM SB-2
                             REGISTRATION STATEMENT
                                    under the
                             SECURITIES ACT OF 1933

                                 ENTROPIN, INC.
                 (Name of small business issuer in its charter)

       Colorado                        283                     84-1090424
- ----------------------     ----------------------------   ----------------------
(State or jurisdiction     (Primary Standard Industrial     (I.R.S. Employer
 of incorporation or        Classification Code Number)   Identification Number)
    organization)   
                                 Entropin, Inc.
                               45926 Oasis Street
                             Indio, California 92201
                                 (760) 775-8333
                   (Address and telephone number of principal
               executive offices and principal place of business)

                               -------------------
                                Higgins D. Bailey
                              Chairman of the Board
                                 Entropin, Inc.
                               45926 Oasis Street
                             Indio, California 92201
                                 (760) 775-8333
                  (Name, address and telephone number of agent
                                  for service)

                        COPIES OF ALL COMMUNICATIONS TO:

                            A. Thomas Tenenbaum, Esq.
                               Judy A. Gooch, Esq.
                       Brenman Bromberg & Tenenbaum, P.C.
                             Mellon Financial Center
                         1775 Sherman Street, Suite 1001
                             Denver, Colorado 80203
                                 (303) 894-0234
                               (303) 839-1633 FAX

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

     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.  [  ]

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


<PAGE>
<TABLE>
<CAPTION>

                                                 CALCULATION OF REGISTRATION FEE
========================================================================================================================

                                                                                        Proposed
                                                  Amount            Proposed            maximum            Amount of
 Title of each class of                            to be             maximum           aggregate         registration
  securities to be registered                   registered      offering price (1)  offering price (1)        fee
- ------------------------------------------------------------------------------------------------------------------------
<S>                                              <C>                  <C>            <C>                  <C>
Common Stock ($.001 Par value)                   5,754,546            $7.50          $43,159,095.00       $12,731.93
- ------------------------------------------------------------------------------------------------------------------------
Common Stock Underlying Options                    180,001            $7.50          $ 1,350,075.00       $   398.26
- ------------------------------------------------------------------------------------------------------------------------
TOTAL                                            5,934,547            $7.50          $44,509,102.50       $13,130.19
- ------------------------------------------------------------------------------------------------------------------------
(1)      Estimated solely for the purpose of calculating the registration fee pursuant to Rules 457(a) and (g).
</TABLE>

<PAGE>
<TABLE>
<CAPTION>
                                               CROSS REFERENCE SHEET

Form SB-2
Item No.                                                           Sections in Prospectus
- --------                                                           ----------------------
<S>  <C>                                                           <C>
1    Front of Registration Statement and Outside Front
     Cover of Prospectus........................................   Cover Page

2    Inside Front and Outside Back Cover Pages of
     Prospectus.................................................   Inside Front Cover Pages (I)(ii);
                                                                   Table of Contents

3    Summary Information and Risk Factors.......................   Prospectus Summary; Risk Factors

4    Use of Proceeds............................................   Prospectus Summary; Use of Proceeds

5    Determination of Offering Price............................   Cover Page; Plan of Distribution

6    Selling Security Holders...................................   Selling Security Holders

7    Plan of Distribution.......................................   Prospectus Summary; Plan of Distribution

8    Legal Proceedings..........................................   Legal Proceedings

9    Directors, Executive Officers, Promoters and
     Control Persons............................................   Management - Directors and Executive Officers

10   Security Ownership of Certain Beneficial Owners
     and Management.............................................   Security Ownership of Certain Beneficial Owners
                                                                   and Management

11   Description of Securities..................................   Description of Securities

12   Interest of Named Experts and Counsel......................   Experts

13   Disclosure of Commission Position on
     Indemnification for Securities Act Liabilities.............   Statement as to Indemnification

14   Organization within Last Five Years........................   The Company; Interests of Management and
                                                                   Others in Certain Transactions

15   Description of Business....................................   Prospectus Summary; Risk Factors; The Company

16   Management's Discussion and Analysis or Plan of
     Operation..................................................   Management's Discussion and Analysis or Plan of
                                                                   Operation

17   Description of Property....................................   The Company

18   Certain Relationships and Related Transactions.............   Interests of Management and Others in Certain
                                                                   Transactions

19   Market for Common Equity and Related
     Stockholder Matters........................................   Risk Factors; Market for Common Equity,
                                                                   Dividend Policy and Related Shareholder Matters


<PAGE>

20   Executive Compensation.....................................   Management - Executive Compensation

21   Financial Statements.......................................   Index to Financial Statements

22   Changes In and Disagreements With Accountants
     on Accounting and Financial Disclosure.....................   Experts

23   Indemnification of Directors and Officers..................   Indemnification of Directors and Officers

24   Other Expenses of Issuance and Distribution................   Other Expenses of Issuance and Distribution

25   Recent Sales of Unregistered Securities....................   Recent Sales of Unregistered Securities

26   Exhibits...................................................   Exhibits

27   Undertakings...............................................   Undertakings
</TABLE>



<PAGE>

PROSPECTUS

                                 ENTROPIN, INC.

                                5,934,547 Shares


         This  Prospectus  relates to the resale by the  holders  (the  "Selling
Security  Holders")  named herein,  for their own  accounts,  of up to 5,934,547
shares of Common Stock,  $.001 par value  (hereinafter  sometimes referred to as
the "Shares") of Entropin,  Inc., a Colorado  corporation (the  "Company").  The
Company was formerly known as Vanden Capital Group, Inc. ("Vanden").  In January
1998, the Company and Entropin, Inc., a California corporation, ("Old Entropin")
consummated an Agreement and Plan of Merger (the "Merger  Agreement"),  pursuant
to which the Company acquired all of the issued and outstanding  shares of stock
of Old Entropin.  In connection with the Merger  Agreement,  the Company changed
its name to  Entropin,  Inc.  and  succeeded  to the  business  activity  of Old
Entropin, which ceased to exist.

         The Company is  obligated  to  register:  (a)  5,580,002  of the Shares
pursuant to the terms of the Merger Agreement;  (b) 300,000 Shares in accordance
with certain  registration  rights granted to purchasers in a private  placement
offering of securities  conducted by Old Entropin in December 1997;  and, (c) an
additional  54,545 Shares  pursuant to an agreement to register such shares with
certain of the Selling Shareholders.

         The Company's  Common Stock is traded on the Electronic  Bulletin Board
under the trading symbol "ETPN". See MARKET FOR COMMON EQUITY,  DIVIDEND POLICY,
THE COMPANY AND DESCRIPTION OF SECURITIES.

         The  shares  of  Common  Stock  being  offered  hereby  are  not  being
underwritten  in this  offering,  and the Company  will not receive any proceeds
from their sale. See SELLING SECURITY HOLDERS.

THESE SECURITIES ARE SPECULATIVE AND INVOLVE A HIGH DEGREE OF RISK TO INVESTORS.
PROSPECTIVE  PURCHASERS  SHOULD  CONSIDER  CAREFULLY THE  DISCUSSION  UNDER RISK
FACTORS COMMENCING ON PAGE 4 OF THIS PROSPECTUS.

         Brokers and dealers  who propose to effect  transactions  in the Shares
should assure  themselves of the existence of  appropriate  exemptions  from the
securities  registration  requirements  of the securities laws of the applicable
jurisdictions or effectuate such  registrations in connection with any offers or
sales of the Shares.
                              --------------------

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

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

                 The date of this Prospectus is _________, 1998



<PAGE>

The  following  language  appears  in red on the left  side of the  cover  page:
INFORMATION   CONTAINED  HEREIN  IS  SUBJECT  TO  COMPLETION  OR  AMENDMENT.   A
REGISTRATION  STATEMENT RELATING TO THESE SECURITIES HAS NOT BEEN FILED WITH THE
SECURITIES  AND EXCHANGE  COMMISSION.  THESE  SECURITIES MAY NOT BE SOLD NOR MAY
OFFERS TO BUY BE ACCEPTED PRIOR TO THE TIME THE REGISTRATION  STATEMENT  BECOMES
EFFECTIVE.  THIS  PROSPECTUS  SHALL  NOT  CONSTITUTE  AN  OFFER  TO  SELL OR THE
SOLICITATION OF AN OFFER TO BUY NOR SHALL THERE BE ANY SALE OF THESE  SECURITIES
IN ANY STATE IN WHICH SUCH OFFER,  SOLICITATION  OR SALE WOULD BE UNLAWFUL PRIOR
TO REGISTRATION OR QUALIFICATION UNDER THE SECURITIES LAWS OF ANY SUCH STATE.

No  person  has  been  authorized  to  give  any  information  or  to  make  any
representations other than those contained in this Prospectus in connection with
the offer made by this  Prospectus  and, if given or made,  such  information or
representations  must  not be  relied  upon as  having  been  authorized  by the
Company. This Prospectus does not constitute an offer to sell or solicitation of
an  offer  to  buy  any  of the  securities  offered  hereby  by  anyone  in any
jurisdiction  in which such offer or  solicitation is not authorized or in which
the person making such offer or solicitation is not qualified to do so or to any
person to whom it is  unlawful to make such offer or  solicitation.  Neither the
delivery  of this  Prospectus  nor any sale  made  hereunder  shall,  under  any
circumstances,  create any implication that the information  contained herein is
correct as of any time subsequent to the date of this Prospectus.

<TABLE>
<CAPTION>
                                                 TABLE OF CONTENTS

<S>                                             <C>      <C>                                                  <C> 
Summary........................................  1       Security Ownership of Certain
Risk Factors...................................  4         Beneficial Owners and Management.................. 32
Use of Proceeds................................ 12       Interests of Management and Others
Capitalization................................. 12         in Certain Transactions........................... 34
Market For Common Equity,                                Description of Securities........................... 35
 Dividend Policy and                                     Selling Security Holders............................ 37
 Related Shareholder Matters................... 12       Plan of Distribution................................ 40
Management's Discussion and                              Legal Matters....................................... 42
  Analysis or Plan of Operations............... 13       Experts............................................. 42
The Company.................................... 15       Shares Eligible for Future Sale..................... 43
Legal Proceedings.............................. 23       Additional Information.............................. 43
Management..................................... 23       Glossary............................................ 44
Executive Compensation......................... 27       Financial Statements................................F-1
</TABLE>


                                                        ii

<PAGE>

                                     SUMMARY

         The following summary is qualified in its entirety by the more detailed
information and financial  statements  appearing  elsewhere in this  Prospectus.
Technical terms used herein are defined in the Glossary. See GLOSSARY.

                                   THE COMPANY

         Entropin,  Inc.  (the  "Company")  is  engaged  in  the  pharmaceutical
research  business.  The Company is currently  developing  a patented  medicinal
preparation known as Esterom(R),  formulated for the treatment of impaired range
of motion associated with acute lower back sprain and acute painful shoulder.

         The Company's  scientific advisor,  Dr. James E. Wynn, and the inventor
of Esterom(R),  Dr. Lowell M. Somers,  have identified three new molecules which
serve as the basis for seven U.S.  patents  owned by the  Company.  The  Company
estimates  that an  average  of 17 years of  patent  protection  remain.  Patent
applications  have been filed in 29 foreign countries which the Company believes
will provide protection for a significant market worldwide. Future plans include
the  research  and  development  of  additional  drugs  related to  Esterom(R)'s
technology.

         The  Company has a current and open  Investigational  New Drug  ("IND")
file with the U.S.  Food and Drug  Administration  ("FDA") and is in Phase II of
the approval process.  Four preclinical  animal studies and FDA Phase I Clinical
Studies on Esterom(R) have been successfully completed. The results of the Phase
II study indicate that the drug is safe and effective.  The Company has designed
the Phase III Protocol and must complete the Phase III Study prior to completion
of the New Drug Application  ("NDA") required by the FDA for final approval of a
new prescription drug.

         The two indications  tested with the topical  application of Esterom(R)
were acute lower back sprain and acute painful shoulder.  The range of motion of
each condition was improved  significantly when compared with patients receiving
a placebo.  The Company  believes that these two  conditions  affect about sixty
million Americans each year and represent a substantial  domestic market.  There
is no estimate  available for the size of the international  market,  which also
appears  to have  potential.  Additional  markets  under  consideration  are the
domestic and international veterinary markets.

         The Company was incorporated in the State of Colorado in 1987 as Vanden
Capital Group, Inc. for the primary purpose of providing business and management
advisory services.  The Company also had been considering business acquisitions.
On January 15, 1998, the Company and Entropin,  Inc., a California  corporation,
("Old  Entropin")  consummated  an  Agreement  and Plan of Merger ( the  "Merger
Agreement"),  whereby the  Company  acquired  all of the issued and  outstanding
shares of Old Entropin stock in exchange for the issuance of 5,700,001 shares of
the Company's Common Stock and 3,210,487 shares of Series A non-voting preferred
stock. In connection with the Merger,  the Company changed its name to Entropin,
Inc.,  and  succeeded to the business  activity of Old  Entropin.  The terms and

                                      -1-
<PAGE>

conditions of the Merger  Agreement  obligate the Company to register all of the
Shares of the  Company's  Common  Stock issued to  shareholders  of Old Entropin
following the consummation of the Merger.
<TABLE>
<CAPTION>
                                  THE OFFERING
<S>                                                  <C>
Common Stock Offered for
Selling Security Holders....................         5,934,547 shares of Common Stock $0.001 par value.
                                                     (includes 180,001 shares underlying options held by
                                                     certain Selling Security Holders).  See SECURITY HOLDERS.


Use of Proceeds.............................         The Company will not receive any proceeds from the sale
                                                     of the Shares. See USE OF PROCEEDS AND THE COMPANY.

Risk Factors................................         An investment in the securities offered by this Prospectus
                                                     involves a high degree of risk and should be considered
                                                     only by persons who can afford the loss of their entire
                                                     investment.  Prospective purchasers should review
                                                     carefully the entire Prospectus and should consider,
                                                     among other things the matters set forth under Risk
                                                     Factors.
</TABLE>

                          SUMMARY FINANCIAL INFORMATION

         The following summary financial data should be read in conjunction with
the  financial   statements  and  notes  thereto  included   elsewhere  in  this
Prospectus.  The statements of operations  data for the years ended December 31,
1997 and 1996,  and for the period from August 27, 1984  (inception) to December
31, 1997, the balance sheet data at December 31, 1997 and 1996, and the proforma
statement  as of  December  31,  1997 are  derived  from and  should  be read in
conjunction  with the  financial  statements  of the Company  and notes  thereto
audited by Causey Demgen & Moore Inc., independent auditors.



                                       -2-

<PAGE>

         The  summary  financial  data as of  December  31,  1997 and 1996,  are
derived from the audited financial statements of the Company.

<TABLE>
<CAPTION>
                                                                                              Cumulative
STATEMENTS OF OPERATIONS DATA:                                                               Amounts from
                                                           Years Ended December 31,            Inception
                                                           ------------------------          ------------
                                                              1997          1996                 1997
                                                              ----          ----                 ----
<S>                                                      <C>            <C>                  <C>
Revenues                                                 $     -0-      $    -0-             $    -0-

Research and development                                 $   683,209    $  167,818           $ 3,752,854

Other costs and expenses                                 $   415,239    $  207,320           $   808,321

Net loss                                                 $(1,098,448)   $ (375,138)          $(4,561,175)
                                                         -----------    ----------           -----------
Basic net loss per common share(1)                       $      (.21)   $     (.07)          $      (.87)
                                                         ===========    ==========           ===========
Common shares used in computing net loss per               5,220,000     5,220,000             5,220,000
common share(1)                                          ===========    ==========           ===========
</TABLE>

<TABLE>
<CAPTION>
BALANCE SHEET DATA:
                                                                                             Unaudited Pro
                                                                                                forma(2)
                                                                                              ------------
                                                          December 31,  December 31,          December 31,
                                                          ------------  ------------          ------------
                                                              1997          1996                  1997
                                                              ----          ----                  ----
<S>                                                      <C>            <C>                   <C>
Cash and cash equivalents                                $       291    $     1,677           $ 1,029,247

Working capital (deficit)                                $  (423,395)   $  (162,916)          $   605,561

Total assets                                             $   282,493    $   225,003           $ 1,300,703

Long-term liabilities                                    $ 3,365,982    $ 3,143,137           $   155,495

Redeemable preferred stock                                         -              -           $ 3,210,487

Stockholders' equity (deficit)                           $(3,512,175)   $(3,087,727)          $(2,493,965)
</TABLE>
- ----------------
(1)      See  Note  5 to  the  Financial  Statements  for a  description  of the
         computation of net income (loss) from continuing  operations per common
         share.
(2)      Adjusted  to give  effect to the  recapitalization  of the  Company,  a
         private  placement of 300,000 shares of common stock,  and the issuance
         of 3,210,487 shares of Series A redeemable preferred stock.

                                       -3-

<PAGE>

                                  RISKS FACTORS

         The Shares offered hereby are  speculative in nature and involve a high
degree of risk. The Shares should be purchased only by persons who can afford to
lose their entire  investment.  Therefore,  prior to making any  purchase,  each
prospective  investor should consider very carefully the following risk factors,
as well as all of the other  information set forth elsewhere in this Prospectus,
including the information contained in the financial statements.

DEPENDENCE ON ONE PRODUCT AND FDA APPROVAL

         The  Company's  principal  development  efforts  are  centered  on  the
development of a new drug,  Esterom(R),  which management believes shows promise
for the treatment of impaired range of motion  associated  with acute lower back
sprain and acute painful  shoulder.  While limited clinical trials of Esterom(R)
have to date  produced  favorable  results,  significant  additional  trials are
required,  and no  assurance  can be  given  that the drug  will  ultimately  be
approved  by the FDA.  The  Company  intends  to  develop  additional  products;
however,  there can be no assurance that any additional  drugs will be developed
or approved for marketing by the FDA. The Company has never introduced a product
for sale to the public,  and no  assurance  can be given that  marketing  of the
Company's product in any country in which it may be approved will be financially
successful,  which  could  materially  adversely  effect  the  Company.  See THE
COMPANY.

EARLY STAGE OF PRODUCT DEVELOPMENT; SUBSTANTIAL OPERATING LOSSES

         The Company has not yet generated any operating  revenues.  The Company
cannot predict when marketing approval for Esterom(R) will be obtained, if ever.
Even if such  approval is obtained,  there can be no assurance  that  Esterom(R)
will be successfully marketed. The Company has experienced significant operating
losses due to substantial  expenses  incurred to acquire and fund development of
the  product,  and,  as of  December  31,  1996  and  December  31,  1997 had an
accumulated  deficit of  $3,462,727  and  $4,561,175  respectively.  The Company
expects its  operating  expenses to increase  over the next several  years as it
funds development,  clinical testing and other expenses of seeking FDA approval.
The Company's ability to achieve a profitable level of operation is dependent in
large part on obtaining  regulatory  approvals for Esterom(R) and any subsequent
products,    entering   into    agreements   for   product    development    and
commercialization, and expanding from development into successful marketing, all
of which will require significant amounts of capital.  There can be no assurance
that the  Company  will  ever  achieve a  profitable  level of  operations.  See
MANAGEMENT'S DISCUSSION AND ANALYSIS OR PLAN OF OPERATIONS.

PATENTS AND PROPRIETARY RIGHTS

         Although the Company has been issued certain patents, patents are not a
guarantee of protection from competitors, especially in an area characterized by
rapid advances.  Enforcement of patents and proprietary rights in many countries
can be expected to be  problematic or  unpredictable.  There can be no assurance
that any  patents  issued or licensed  to the  Company  will not be  challenged,

                                       -4-

<PAGE>

invalidated,  infringed  upon,  or designed  around by others or that the claims
contained  in such  patents  will not  infringe  the  patent  claims of  others.
Furthermore,  there  can be no  assurance  that  others  will not  independently
develop  similar  products.  Although  management  believes that patents provide
significant  protection for the Company's product, the Company's business may be
adversely  affected  by  competitors  who  develop  a  substantially  equivalent
product. Patent litigation can be extremely expensive,  and the Company may find
that it is unable to fund  litigation  necessary  to defend its rights.  See THE
COMPANY - PATENT.

GOVERNMENT REGULATION AND PRODUCT APPROVALS

         The research,  preclinical development,  clinical trial, manufacturing,
marketing  and sale of  pharmaceuticals  are subject to extensive  regulation by
governmental authorities.  Products which may be developed by the Company cannot
be  marketed  commercially  in any  jurisdiction  in  which  they  have not been
approved. The process of obtaining regulatory approvals is lengthy and extremely
expensive.  Approval by U.S.  authorities  does not guarantee,  nor  necessarily
facilitate  or  expedite,  approval  in  other  countries.  Further,  government
regulations  are subject to change and it is possible that  additional  criteria
may be established or imposed which could prevent or delay  regulatory  approval
of  Esterom(R)  or any  subsequent  products of the  Company.  See THE  COMPANY-
GOVERNMENTAL REGULATIONS.

SUBSTANTIAL CAPITAL NEEDS; UNCERTAINTY OF ADDITIONAL FUNDING

         The  Company's  operations to date have  consumed  substantial  capital
without  generating  any  revenues,  and the  Company  will  continue to require
substantial and increasing  amounts of funds to conduct  necessary  research and
development, preclinical and clinical testing of its products, and to market any
products which may receive regulatory  approval.  The Company does not expect to
generate revenue from operations for 36 to 48 months,  and the Company's ability
to meet its cash  obligations  as they  become due and  payable is  expected  to
depend  for at least the next  several  years on its  ability  to obtain  equity
and/or debt capital. The Company is contractually  obligated to pay a royalty in
the aggregate of approximately  one to three percent (1% to 3%) of gross revenue
to certain  persons  pursuant to an agreement of dissolution of a partnership in
which the Company was formerly  involved.  In addition,  the Company has entered
into an agreement  with  Western  Center for Clinical  Studies,  Inc.  ("WCCS"),
whereby WCCS will assist the Company in obtaining  FDA approval for its product,
Esterom(R),  implementing a business plan and providing experienced personnel to
bring  Esterom(R)  to  commercialization,  in exchange for a  management  fee of
$880,400 to be paid over the 33 month term of the  agreement.  As a result,  the
Company  expects to continue  to incur  increasing  negative  cash flows and net
losses for the foreseeable future.

         There  can be no  assurance  that the  Company  will be  successful  in
raising funds necessary to bring Esterom(R) to market.  Additional funds will be
sought,  most likely  through  sale of equity or debt  securities,  which can be
expected to result in substantial dilution to existing  shareholders,  including
purchasers of the Shares. The Company may also seek funds through  collaborative
arrangements with strategic partners or others.  Such arrangements could require
relinquishment of rights to certain  technologies,  products or markets which it

                                       -5-

<PAGE>

would not otherwise relinquish. If adequate funds are not available, the Company
will delay and may be unable to complete  Phase III testing.  See RISK FACTORS -
"SUBSTANTIAL  CAPITAL NEEDS ,  MANAGEMENT'S  DISCUSSION  AND ANALYSIS OR PLAN OF
OPERATIONS, AND THE COMPANY.

POSSIBLE INABILITY TO MEET CASH OBLIGATIONS

         The Company may experience cash flow difficulties from time to time due
to its  substantial  capital  needs.  For the  foreseeable  future the Company's
ability to meet its  obligations  as they become due and payable  will depend on
its ability to obtain debt and/or equity funding.  In the event that the Company
cannot raise sufficient capital when needed to sustain or expand its operations,
the Company would likely suspend research and development  activities.  See RISK
FACTORS  "SUBSTANTIAL  CAPITAL NEEDS ,  MANAGEMENT'S  DISCUSSION AND ANALYSIS OR
PLAN OF OPERATIONS, AND THE COMPANY.

TECHNOLOGICAL CHANGE AND COMPETITION

         The pharmaceutical industry is characterized by intense competition and
is subject to rapid and significant  technological  change.  Rapid technological
development may cause the Products to become obsolete before the Company recoups
all or any portion of the related expenses.  The Company's  competitors  include
major pharmaceutical  companies,  biotechnology firms and universities and other
research institutions,  both in the United States and abroad, which are actively
engaged in research and development of products in the  therapeutic  areas being
pursued by the Company.  Most of the Company's  competitors  have  substantially
greater  financial,  technical,  manufacturing,  marketing  and  human  resource
capabilities than the Company.  In addition,  many of the Company's  competitors
have  significantly  greater  experience in testing new or improved  therapeutic
products  and  obtaining  regulatory  approvals of  products.  Accordingly,  the
Company's  competitors may succeed in obtaining regulatory approval for products
more rapidly than the Company. If the Company commences  significant  commercial
sales of its products,  it will also be competing with respect to  manufacturing
efficiencies  and  marketing   capabilities,   areas  in  which  it  has  little
experience. See THE COMPANY - COMPETITION.

DEPENDENCE ON AGREEMENT WITH WESTERN CENTER FOR CLINICAL STUDIES, INC.

         The Company has entered into an agreement  with the Western  Center for
Clinical  Studies,  Inc.  ("WCCS"),  a  California  corporation  experienced  in
providing  assistance  to  companies  in the  process  of taking  pharmaceutical
products  through the FDA approval process (the  "Agreement").  The Company will
rely on WCCS for its  expertise in assisting  the Company to obtain FDA approval
for its product,  Esterom(R), in exchange for a management fee of $880,400 to be
paid over the 33 month term of the Agreement,  as well as grant stock options to
WCCS  within  thirty  days after  execution  of the  Agreement  to  purchase  an
aggregate of 450,000 shares of Entropin  common stock,  exercisable for a period
of five years from date of vesting at an exercise  price of $1.50 per share.  In
the event that the Company can not pay the financial obligations required by the
Agreement,  the Company  would be forced to terminate the Agreement by giving 60

                                       -6-

<PAGE>

days' notice, and make a cash payment to WCCS in the amount of three (3) months'
management  fees,  or $76,400.  The loss of the services  provided by WCCS would
adversely  affect the  Company's  ability to obtain  timely FDA  approval on its
product,  Esterom,  and the Company would likely  suspend  further  research and
development  activities.  See  RISK  FACTORS  -  "SUBSTANTIAL  CAPITAL  NEEDS  ,
MANAGEMENT'S DISCUSSION AND ANALYSIS OR PLAN OF OPERATIONS, AND THE COMPANY.

DEPENDENCE ON MANUFACTURER AGREEMENT

         In January  1997,  the  Company  entered  into  Development  and Supply
Agreements with Mallinckrodt,  Inc.  ("Mallinckrodt") for ten (10) year terms to
develop all of the  chemistry,  manufacturing  and controls  necessary to comply
with the drug  master  file of the FDA,  as well as to  supply  the bulk  active
product.  In exchange for these services,  Mallinckrodt  will receive  exclusive
rights as a supplier of the bulk active product to the Company in North America.
For the year ended  December 31, 1997,  the contract price of the ingredient was
fixed based on the number of liters ordered by the Company. In subsequent years,
the  cost per  liter  will be  adjusted  based on  changes  in the  price of the
components in the bulk active product.

          If the Company is unable to obtain a sufficient  supply of the product
from  Mallinckrodt  or such supplies are delayed,  the Company could  experience
significant  delays in bringing the product to market as well as delays in human
clinical  testing  schedules  and  delays  in  submissions  of the  product  for
regulatory approval and initiation of further development progress, any of which
could have a material  adverse  effect on the Company's  business and results of
operations.  In addition,  if the Company must seek an alternative  supplier and
manufacturer  of its  product  and is unable to  obtain  or retain  third  party
manufacturing  on  commercially   acceptable  terms,  it  may  not  be  able  to
commercialize   pharmaceutical   products   as   planned.   Moreover,   contract
manufacturers that the Company may use must adhere to current Good Manufacturing
Practices  ("GMP")  which  are  regulations  enforced  by the  FDA  through  its
facilities  inspection program.  These facilities must pass a pre-approval plant
inspection before the FDA will issue a pre-market  approval of the product.  The
Company's  dependence upon third parties for the  manufacture of  pharmaceutical
products may adversely  affect the Company's  profit  margins and its ability to
develop and deliver  pharmaceutical  products on a timely and competitive basis.
See MANAGEMENT'S DISCUSSION AND ANALYSIS OR PLAN OF OPERATIONS,  AND THE COMPANY
- - PROPOSED MANUFACTURING PLANS.

DEPENDENCE ON THIRD PARTIES TO MARKET THE COMPANY'S PRODUCT

         The Company does not intend to manufacture any pharmaceutical products.
The Company  believes that its strategy for  outsourcing  manufacturing  is cost
effective  since it avoids the high fixed  costs of plant,  equipment  and large
manufacturing  staff, and thereby enables the Company to conserve its resources.
However,  there can be no assurance  that the Company would be able to outsource
manufacture any of such products  successfully and in a  cost-effective  manner.
The  Company  will  seek to  identify  and  propose  strategic  partners  and/or
distributors for the Company's  product.  If the Company should encounter delays
or  difficulties  in  establishing  relationships  with  drug  manufacturers  to

                                       -7-

<PAGE>

produce,  package and distribute its finished  pharmaceutical  products,  market
introduction and subsequent sales of such products would be adversely  affected.
See THE COMPANY.

DEPENDENCE ON OFFICERS AND FUTURE EMPLOYEES

         The Company is dependent on its officers and  directors.  The following
officers of the Company are also officers of WCCS, a  subcontractor  employed to
assist the Company in obtaining  FDA  approval  for its product,  and will serve
only during the term of the WCCS  contract  (33  months):  President,  Daniel L.
Azarnoff; Vice President of Science/Regulatory Affairs, Lois Rezler, Ph.D.; and,
Chief Operating  Officer,  Roy S. Azarnoff.  If the WCCS agreement is terminated
for any reason prior to the Company's obtaining FDA approval of its product, the
loss of  services  by any of the  above  officers  would  adversely  affect  the
management  of the  Company.  In  addition,  if the Company  fails to retain the
services  of its  Chief  Executive  Officer  or  Chief  Financial  Officer,  the
Company's operations would be adversely affected.  The Company does not have key
man insurance on any of its officers or directors. See MANAGEMENT.

MANAGEMENT OF GROWTH

         The Company's  ability to manage its growth, if any, will require it to
continue to improve and expand its management, operational and financial systems
and  controls.   If  the  Company's   management  is  unable  to  manage  growth
effectively,  the Company's business and results of operations will be adversely
affected. See THE COMPANY AND MANAGEMENT.

TECHNOLOGICAL UNCERTAINTIES

         All of  the  Company's  product  development  efforts  are  based  upon
technologies  and  therapeutic  approaches  that have not been widely  tested or
used.  There is,  therefore,  a significant  risk that these approaches will not
prove to be successful.  While the Company believes that the results obtained to
date in preclinical and limited  clinical  studies support further  research and
development,  those results are not necessarily  indicative of results that will
be obtained in further human clinical testing. See THE COMPANY.

PHARMACEUTICAL PRICING; PENDING HEALTH CARE REFORMS

         Government  health  administration  authorities,  together with private
health  insurers,  increasingly  are  attempting to contain health care costs by
limiting the price or reimbursement levels for medical products and services. In
certain   foreign   markets,    pricing   or   profitability   of   prescriptive
pharmaceuticals is subject to government  control.  In the United States,  there
have  been a  number  of  federal  and  state  proposals  to  implement  similar
government controls or otherwise  significantly  reform the existing health care
system.  Due to uncertainties  as to the ultimate  features of this or any other
reform  initiatives  that may be enacted,  the Company cannot predict which,  if
any, of such reform proposals will be adopted, when they may be adopted, or what
impact they may have on the Company.  It is possible that any legislation  which
is enacted  will  include  provisions  resulting  in price  limits,  utilization

                                       -8-

<PAGE>

controls or other  consequences  that may adversely affect the Company.  See THE
COMPANY - GOVERNMENTAL REGULATIONS.

PRODUCT LIABILITY; LACK OF INSURANCE

         The Company's  business will expose it to potential  product  liability
risks which are inherent in the testing,  manufacturing,  marketing  and sale of
pharmaceutical  products,  and product  liability claims may be asserted against
the  Company.  Product  liability  insurance  for  the  pharmaceutical  industry
generally  is  expensive.  There can be no  assurance  that  adequate  insurance
coverage  will be available at  acceptable  costs,  or that a product  liability
claim would not  adversely  affect the  business or  financial  condition of the
Company.

AUTHORIZED STOCK AVAILABLE FOR ISSUANCE BY THE COMPANY

         There are  presently  outstanding  6,000,051  shares  out of a total of
50,000,000  shares of Common Stock,  $.001 par value,  and  3,210,487  shares of
Series A Convertible  Preferred Stock, $.001 par value, out of 10,000,000 shares
of Preferred  Stock  authorized  for issuance  under the  Company's  Articles of
Incorporation.  The remaining  shares of Common Stock and/or Preferred Stock not
issued or reserved  for specific  purposes  may be issued  without any action or
approval  of the  Company's  shareholders.  To the extent  persons  holding  the
Company's options exercise their options and receive shares of Common Stock, the
number of shares of Common Stock outstanding will increase;  however,  there can
be no assurance  that any of the option  holders will  exercise  their  options.
Other than the option exercise,  management has no present plans,  agreements or
undertakings  involving  the issuance of such shares except as disclosed in this
Prospectus.  Any  such  issuances  could be used as a  method  of  discouraging,
delaying or  preventing  a change in control of the Company or could  dilute the
shareholders'  ownership  of  the  Company.  There  can  be  no  assurance  that
management will not undertake to issue such shares if it deems it appropriate to
do so. See DESCRIPTION OF SECURITIES.

ANTI-TAKEOVER PROVISIONS

         The Company's  Board of Directors can,  without  obtaining  shareholder
approval,  issue shares of Preferred  Stock having  rights that could  adversely
affect the voting power of the Common Stock. The possible  issuance of shares of
Preferred Stock can be used to oppose hostile takeover attempts.
See DESCRIPTION OF SECURITIES.

POSSIBLE VOLATILITY OF PRICE OF SHARES OF COMMON STOCK

         The  prices of  securities  of  publicly  traded  corporations  tend to
fluctuate  widely.  It  can be  expected,  therefore,  that  there  may be  wide
fluctuations in the price of the Company's Common Stock. A public market for the
Common Stock has  developed  only  recently  and there is no assurance  that the
market in the Common  Stock will be  sustained.  The  Company's  Common Stock is
traded on the  Electronic  Bulletin  Board  under  the  trading  symbol  "ETPN".
Fluctuations in trading interest and changes in the Company's operating results,

                                       -9-

<PAGE>

financial  condition and prospects could have a significant impact on the market
prices for the Common Stock.  See MARKET FOR COMMON EQUITY,  DIVIDEND POLICY AND
RELATED SHAREHOLDER MATTERS.

LACK OF DIVIDENDS

         The Company has never paid any cash  dividends  on its Common Stock and
does not  anticipate  paying  dividends  in the  foreseeable  future.  No person
seeking  dividend  income from an  investment  should  purchase  Shares  offered
hereby.  The Company is  obligated  to pay  dividends  on its Series A Preferred
Stock; however, the obligation is non-cumulative. See DESCRIPTION OF SECURITIES.

INDEMNIFICATION AND LIMITED MONETARY DAMAGES

         The Company's Amended Articles of Incorporation  limit the liability of
the  directors to  shareholders  for monetary  damages for breach of a fiduciary
duty except in cases of  liability  for: (i) any breach of their duty of loyalty
to the Company or its shareholders;  (ii) acts or omissions not in good faith or
which  involve  intentional  misconduct  or a knowing  violation  of law;  (iii)
certain  unlawful  distributions;  or, (iv)  transaction from which the director
derived an improper  personal benefit.  Shareholders  cannot recover in full for
improper acts of the Board and its members.

SHARES  ELIGIBLE  FOR FUTURE SALE; POSSIBLE  ADVERSE  EFFECT ON  PRICE OF COMMON
STOCK

         Future sales of Common Stock by current shareholders and option holders
could adversely  affect the market price of the Company's  Common Stock.  All of
the Shares  registered  hereunder can be resold pursuant to this Prospectus.  In
the event the  Shares  are not sold under  this  Prospectus,  the Shares  remain
"restricted  securities" as that term is defined in Rule 144  promulgated  under
the  Securities  Act. In general,  under Rule 144, as currently  in effect,  any
person (or persons whose shares are aggregated),  including persons deemed to be
affiliates, whose restricted securities have been fully paid for and held for at
least one year from the later of the date of payment  therefor to the Company or
acquisition  thereof from an  affiliate,  may sell such  securities  in brokers'
transactions  or directly to market  makers,  provided that the number of shares
sold in any three  month  period may not  exceed  the  greater of 1% of the then
outstanding  Common  Stock or the average  weekly  trading  volume of the Common
Stock during the four calendar weeks  preceding such sale.  Sales under Rule 144
are also subject to certain notice  requirements and the availability of current
public  information  about the  Company.  After two years have  elapsed from the
later  of the  issuance  of  restricted  securities  by  the  Company  or  their
acquisition from an affiliate, such securities may be sold without limitation by
persons who are not affiliates under Rule 144.

         Sales of  substantial  amounts of Common Stock by  shareholders  of the
Company under Rule 144 or otherwise,  or even the potential for such sales,  are
likely to have a  depressive  effect on the market price of the Common Stock and
could  impair the  Company's  ability to raise  capital  through the sale of its
equity securities.

                                      -10-

<PAGE>

RISKS ASSOCIATED WITH FORWARD-LOOKING STATEMENTS

         This Prospectus contains certain forward-looking  statements within the
meaning of Section 27A of the  Securities  Act and Section 21E of the Securities
Exchange Act of 1934, as amended  ("Exchange Act"), and the Company intends that
such  forward-looking  statements  be  subject  to the  safe  harbors  for  such
statements under such sections. The Company's forward-looking statements include
the plans and objectives of management for future  operations,  including  plans
and objectives  relating to the Company's  planned  marketing efforts and future
economic  performance  of  the  Company.  The  forward-looking   statements  and
associated risks set forth in the Prospectus include or relate to the ability of
the Company to: (i) obtain regulatory approval for its product,  including,  but
not  limited to, the FDA;  (ii)  obtain  meaningful  consumer  acceptance  and a
successful  market  for the  product on a national  and  international  basis at
competitive  prices;  (iii)  develop and  maintain  an  effective  national  and
international sales network;  (iv) forecast demand for its product; (v) maintain
pricing and thereby maintain adequate profit margins; and, (vi) achieve adequate
intellectual property protection.

         The forward-looking statements herein are based on current expectations
that involve a number of risk and uncertainties. Such forward-looking statements
are based on  assumptions  that:  (i) the  Company  will  obtain  the  necessary
governmental and regulatory  approval for its product and  subsequently,  market
and provide the product on a timely  basis;  (ii) the Company will obtain equity
and/or debt  capital;  (iii) there will be no material  adverse  competitive  or
technological change in condition of the Company's business;  (iv) there will be
a demand for the  Company's  product;  (v) the  Company's  forecasts  accurately
anticipate market demand;  and, (vi) there will be no material adverse change in
the Company's  operations,  business or  governmental  regulation  affecting the
Company or its suppliers.  The foregoing assumptions are based on judgments with
respect  to,  among  other  things,  future  economic,  competitive  and  market
conditions,  and  future  business  decisions,  all of which  are  difficult  or
impossible  to predict  accurately  and many of which are  beyond the  Company's
control.  Accordingly,  although  the  Company  believes  that  the  assumptions
underlying the  forward-looking  statements are reasonable,  any such assumption
could prove to be inaccurate  and therefore  there can be no assurance  that the
results  contemplated  in  forward-looking   statements  will  be  realized.  In
addition, as disclosed elsewhere in "Risk Factors",  there are a number of other
risks inherent in the Company's  business and  operations  which could cause the
Company's  operating  results to vary markedly and adversely from prior results,
or the  results  contemplated  by  the  forward-looking  statements.  Management
decisions,  including  budgeting,  are  subjective in many respects and periodic
revisions must be made to reflect actual  conditions and business  developments,
the  impact  of which  may cause the  Company  to alter its  marketing,  capital
investment and other  expenditures,  which may also materially  adversely affect
the  Company's  results of  operations.  In light of  significant  uncertainties
inherent in forward-looking  information  included herein, the inclusion of such
information  should not be  regarded as a  representation  by the Company or any
other  person  that the  Company's  objectives  or plans will be  achieved.  See
MANAGEMENT'S DISCUSSION AND ANALYSIS OR PLAN OF OPERATIONS AND THE COMPANY.


                                      -11-

<PAGE>



                                 USE OF PROCEEDS

         None of the proceeds from the sale of the shares of Common Stock by the
Selling  Security  Holders  will be received by the  Company.  The Company  will
receive cash proceeds from the exercise,  if any, of  outstanding  options.  See
SELLING SECURITY HOLDERS AND PLAN OF DISTRIBUTION.

                                 CAPITALIZATION

         The following table sets forth the  capitalization of the Company as of
December 31, 1997, and as adjusted to give effect to the recapitalization  which
occurred on January 15, 1998.
<TABLE>
<CAPTION>
                                                                                         December 31, 1997
                                                                                         -----------------
                                                                                                          Pro Forma
                                                                                    Actual              as adjusted(1)
                                                                                    ------              --------------
<S>                                                                               <C>                    <C>
Long-term debt                                                                    $3,365,982             $  155,495

Series A redeemable preferred stock, $001 par value;                                    ----              3,210,487
   3,210,487 shares, issued and outstanding, as
   adjusted

Stockholders' Equity (deficit):

Preferred Stock, $.001 par value; 10,000,000 shares                                     ----                   ----
   authorized, Series A reported above

Common Stock, $.001 par value; 50,000,000                                              5,220                  6,000
   shares authorized, 6,000,051 shares issued and
   outstanding, as adjusted

Additional paid-in capital                                                         1,043,780              2,061,210

Deficit accumulated during the development stage                                  (4,561,175)            (4,561,175)
                                                                                  -----------            -----------
Total Stockholders' Equity (deficit)                                              (3,512,175)            (2,493,965)
                                                                                  -----------            -----------
Total capitalization                                                              $ (146,193)            $  872,017
                                                                                  ===========            ==========
</TABLE>
- -------------------
(1)      Adjusted  to give  effect to the  recapitalization  of the  Company,  a
         private  placement of 300,000 shares of common stock,  and the issuance
         of 3,210,487 shares of Series A redeemable preferred stock.


                  MARKET FOR COMMON EQUITY, DIVIDEND POLICY AND
                           RELATED SHAREHOLDER MATTERS

         Market  Information.  The  Company's  securities  are not  eligible for
listing on the NASDAQ system;  however, the Company's stock commenced trading on
the  Electronic  Bulletin  Board under the trading symbol "ETPN" on February 25,
1998. The following table sets forth the high and low

                                      -12-

<PAGE>

bid prices for the  Company's  Common  Stock  since the Common  Stock  commenced
trading on February 25, 1998. The quotations reflect  inter-dealer  prices, with
retail  mark-up,  mark-down  or  commissions,   and  may  not  represent  actual
transactions. The information presented has been derived from National Quotation
Bureau, Inc.

            1998 Fiscal Year                        High Bid           Low Bid
            ----------------                        --------           -------

First Quarter                                        $3.375             $3.00
Second Quarter (through April 24, 1998)              $5.375             $6.00

        On April 24, 1998, the last reported bid and asked prices for the Common
Stock were $5.375 and $6.00, respectively.

        DIVIDEND  POLICY.  The payment of dividends by the Company is within the
discretion  of its Board of  Directors  and  depends in part upon the  Company's
earnings, capital requirements and financial condition. Since its inception, the
Company has not paid any  dividends on its Common Stock and does not  anticipate
paying such dividends in the foreseeable  future.  The Company intends to retain
earnings, if any, to finance its operations.

        SHAREHOLDER  INFORMATION.   As  of  April  24,  1998,  the  Company  had
approximately  217 holders of record of the Company's  Common Stock and five (5)
holders of record of the Company's Series A Preferred Stock.

           MANAGEMENT'S DISCUSSION AND ANALYSIS OR PLAN OF OPERATIONS

RESULTS OF OPERATIONS

         Entropin,  Inc. is a development stage  pharmaceutical  company and has
not  generated  any  revenues  for the period from  August 27, 1984  (inception)
through December 31, 1997. Entropin has devoted  substantially all its resources
to  acquisition  of patents,  research  and  development  of the  medicine,  and
expenses  related to the startup of its business.  From inception until December
31,  1997,  Entropin  has  incurred  expenses  of  $3,752,854  in  research  and
development fees,  $511,255 in general and administrative  expenses and $239,698
in interest  resulting  in a loss of  $4,561,175  for the period from  inception
(August 27, 1984) to December 31,  1997.  For the year ended  December 31, 1997,
Entropin incurred $683,209 in research and development fees, $269,853 in general
and  administrative  expenses and $127,386 in interest  expense,  resulting in a
loss of  $1,098,448.  Research and  development  fees incurred  during 1997 were
approximately  $515,000 higher than in 1996. The increase  related  primarily to
recording  research  and  development  expense and  contributed  capital for the
estimated value of common stock ($518,000)  contributed by certain  shareholders
to an  individual  in exchange for research and  development  services  provided
since inception of the Company.  General and  administrative  expenses  incurred
during  1997 were  approximately  $168,000  higher  than in 1996.  The  increase
related  primarily to recording  legal expense and  contributed  capital for the

                                      -13-

<PAGE>

estimated value of common stock ($156,000)  contributed by certain  shareholders
to an individual for business advisory and legal services.

        Entropin  has been  unprofitable  since  inception  and expects to incur
substantial  additional  operating  losses for at least the next few years as it
increases  expenditures  on  research  and  development  and begins to  allocate
significant and increasing  resources to clinical  testing,  marketing and other
activities. As described below, the Company has successfully completed a private
placement  and a  recapitalization  of the Company that will provide  additional
liquidity  for the  Company  for  current  operations.  The  Company  estimates,
however,  that it will require  additional  funding of up to $8,000,000 over the
next three years to successfully complete the FDA approval process. In addition,
the  Company has had no  experience  in  marketing  the  medicine.  As a result,
Entropin's  activities  to date  are not as  broad  in  depth  or  scope  as the
activities it must undertake in the future, and Entropin's historical operations
and financial  information  are not  indicative of Entropin's  future  operating
results  or  financial  condition  or its  ability to  operate  profitably  as a
commercial enterprise when and if it succeeds in bringing any product to market.

CAPITAL RESOURCES AND LIQUIDITY

        In the years since  inception,  Entropin  has  financed  its  operations
primarily  through the sale of shares of Entropin  common  stock,  and loans and
advances from  shareholders.  At December 31, 1997,  outstanding  liabilities to
shareholders, including accrued interest, aggregated $1,809,360.

        On January 15,  1998,  the Company  completed a private  placement of 30
units  (10,000  shares of its $.001 par value  common stock per unit) at $27,500
per unit,  or $2.75 per share,  which  resulted in gross  proceeds of  $825,000.
Concurrent  with the private  placement  the Company  completed an agreement and
plan of merger with Vanden Capital Group, Inc. to exchange all of the issued and
outstanding  common shares of the Company for 5,220,000 shares of Vanden's $.001
par value  common  stock.  Pursuant to the  agreement  Vanden  provided  cash of
$220,000.

        On January 15, 1998,  the Company  issued  3,210,487  shares of Series A
redeemable  non-voting,  noncumulative  8%  preferred  stock in exchange  for an
aggregate  $3,210,487 of notes payable to shareholders  and accrued interest and
for various other liabilities of the Company.

        The Company  recently  entered into an agreement with the Western Center
for Clinical  Studies,  Inc., a California  corporation  experienced in managing
pharmaceutical   development,   including   providing   assistance   in   taking
pharmaceutical  products  to the FDA and  through  clinical  trials and New Drug
Application stages of development. The agreement has a 33-month term, at the end
of which the  Company's  primary  product may be  approved  for  marketing.  The
Company is required to pay management  fees of  approximately  $880,400 over the
term of the  agreement,  as well as provide  stock  options to purchase  450,000
shares of Entropin  common stock over a 33 month period at an exercise  price of
$1.50 per share.



                                      -14-

<PAGE>
                                   THE COMPANY

BACKGROUND

        Entropin, Inc. (the "Company") was incorporated in the State of Colorado
in 1987 as Vanden  Capital  Group,  Inc.,  for the primary  purpose of providing
business and management advisory services. The Company also had been considering
business  acquisitions.  On January 15, 1998, the Company and Entropin,  Inc., a
California  corporation,  ("Old Entropin")  consummated an Agreement and Plan of
Merger ( the "Merger Agreement"), whereby the Company acquired all of the issued
and outstanding shares of Old Entropin common stock which consisted of 5,700,001
shares of common stock and  3,210,487  shares of Series A  non-voting  preferred
stock in exchange for the issuance of 5,700,001  shares of the Company's  Common
Stock and 3,210,487 shares of Series A non-voting preferred stock. In connection
with the Merger, the Company changed its name to Entropin, Inc. and succeeded to
the business  activity of Old Entropin.  The terms and  conditions of the Merger
Agreement  obligate the Company to register  all of the Shares of the  Company's
Common Stock issued to shareholders of Old Entropin  following the  consummation
of the Merger Agreement.

        The Company is currently engaged in pharmaceutical  research and will be
developing a patented  medicinal  preparation  known as Esterom(R) for potential
sale to the  public.  The  Company is the  beneficiary  of more than 19 years of
extensive  research and  development  with  respect to the product,  Esterom(R),
undertaken  by Lowell M. Somers,  MD, the inventor of the product,  and James E.
Wynn,  Ph.D.,  the Company's  scientific  advisor.  The present  formulation  of
Esterom(R)  is based on early  chemical and clinical  studies  performed by Drs.
Somers and Wynn, in conjunction with other doctors.

        The Company is currently  pursuing approval of the product with the U.S.
Food and Drug  Administration  ("FDA").  Esterom(R)  is a medicinal  preparation
formulated for the treatment of impaired range of motion  associated  with acute
lower back sprain and acute  painful  shoulder.  The  Company has been  assigned
seven patents issued by the U.S.  Patent  Office.  The Company has a current and
open  Investigational  New Drug  ("IND") file with the FDA and is in Phase II of
the approval process.

        The two  indications  tested with the topical  application of Esterom(R)
were acute lower back sprain and acute painful shoulder.  The range of motion of
each condition was improved  significantly when compared with patients receiving
a placebo.  The Company  believes that these two  conditions  affect about sixty
million Americans each year and represent a substantial  domestic market.  There
is no estimate  available for the size of the international  market,  which also
appears to have potential.  Additional markets being considered are the domestic
and international veterinary market.






                                      -15-

<PAGE>

THE PRODUCT - ESTEROM(R)

        Dr. Somers originally discovered Esterom(R), a medicinal preparation, in
1979. The product name is derived from its chemical identity and medical purpose
since  it is an ester  that  improves  the  range of  motion  (ROM) of  patients
suffering from a painful shoulder or back sprain/strain.

        In 1979, Drs. Somers and Wynn initiated a collaborative  effort to study
the chemical  composition  of Esterom(R)  and its clinical  effects which effort
continues  today under the  Company's  aegis.  As Chairman of the  Department of
Pharmaceutical  Sciences,  College  of  Pharmacy,  Medical  University  of South
Carolina,  Dr. Wynn developed a manufacturing  method that produced a consistent
and stable  product  which could  satisfy  FDA  requirements.  The  reproducible
hydrolytic  process that Dr. Wynn  developed  led to the  discovery of three new
molecules in 1993.  The three newly  discovered  molecules  are a novel class of
benzoylecgonine ("BE"), ecgonine ("EC") and ecgonidine derivatives.

GOVERNMENTAL REGULATIONS

        GENERAL.  The  manufacturing  and  marketing of the  Company's  proposed
products and its research and development activities are and will continue to be
subject to regulation by federal,  state and local  governmental  authorities in
the United States and other countries. In the United States, pharmaceuticals are
subject to  rigorous  regulation  by the FDA's  Center for Drug  Evaluation  and
Research,  which reviews and approves marketing of drugs. The Federal Food, Drug
and Cosmetic Act, the regulations promulgated thereunder,  and other federal and
state  statutes  and  regulations  govern,  among  other  things,  the  testing,
manufacture, labeling, storage, record keeping, advertising and promotion of the
Company's potential products.

        APPROVAL  PROCESS.  The process of obtaining FDA approval for a new drug
takes  several  years and  generally  involves the  expenditure  of  substantial
resources. The steps required before a new drug can be produced and marketed for
human use include  clinical trials and the approval of the New Drug  Application
("NDA").

        PRE-CLINICAL  TESTING. The compound is subjected to extensive laboratory
and animal testing to determine if the compound is biologically safe and has the
functionality  for which its  therapeutic  use is  intended.  All animal  safety
studies must be performed under current good laboratory practices ("GLP").

        INVESTIGATIONAL  NEW DRUG (IND).  Before human tests can begin, the drug
sponsor must file an IND application  with the FDA, showing how the drug is made
and the results of animal  testing.  If the FDA does not reject the  application
within 30 days, IND status permits the sponsor to undertake  initial  studies in
human volunteer subjects.

         HUMAN  TESTING  (CLINICAL).  Under an IND, the human  clinical  testing
program involves three phases.  Clinical trials are conducted in accordance with
protocols that detail the objectives of the study,  the parameters to be used to

                                      -16-

<PAGE>

monitor safety and the efficacy criteria to be evaluated,  including the type of
statistical analysis that will be done. Each protocol is submitted to the FDA as
part of the IND filing. At the present time, two well-controlled clinical trials
are required to establish  efficacy.  Each clinical study is conducted under the
auspices  of  an  independent   Institutional  Review  Board  ("IRB")  for  each
institution at which the study will be conducted.  The IRB will consider,  among
other things,  information on the product,  ethical  factors,  the risk to human
subjects, and the potential benefits of therapy relative to risk.

        In Phase I clinical  trials,  studies  usually are  conducted on healthy
volunteers  to  determine  the  maximum  tolerated  dose,   adverse  events  and
pharmacokinetics of a product.  Efficacy endpoints,  even if surrogate measures,
are also obtained if possible. Phase II studies are conducted on a statistically
relevant  number of  patients  having a specific  disease to  determine  initial
efficacy in humans for a specific  disease,  and  possible  adverse  effects and
safety  risks.  Phase  III  normally  involves  the  pivotal  trials  of a drug,
consisting of wide-scale studies on patients with the disease for which the drug
is intended, in order to evaluate the overall benefits and risks of the drug for
the treated  disease.  In addition to a placebo,  these  studies may compare the
Company's  drug  product  with  other  available  products.  Phase I, II and III
studies  are planned to  demonstrate  safety and  efficacy  as required  for FDA
approval.  The FDA continually  reviews the clinical trial plans and results and
may  suggest  design  changes  or may  discontinue  the  trials  at any  time if
significant safety or other issues arise.

        NEW DRUG  APPLICATION  (NDA).  Upon  completion  of Phase III,  the drug
sponsor may file an NDA containing all pre-clinical, pharmacology and toxicology
information,  and  clinical  and  chemical,  manufacturing  and control  ("CMC")
information  that has been gathered,  as well as all other  information  that is
known from any other sources.  The information must include  essentially all the
data   collected   during   the  IND  phase   (e.g.   chemical   structure   and
characterization  of the drug, formula and manufacturing  process,  stability in
the proposed  packaging,  animal and  laboratory  studies,  results of all human
tests,  etc.) and  proposed  labeling.  Once  submitted,  the FDA has 90 days to
accept the application. If the application is accepted, the Company must pay the
FDA  approximately  $200,000 as a user fee in order to continue  with the review
process.

         APPROVAL.  Once a NDA is approved, the manufacturer is required to keep
the FDA  informed  at all  times  regarding  any  adverse  reactions.  Moreover,
contract  manufacturers  that the  Company  may use must  adhere at all times to
current Good  Manufacturing  Practices ("GMP")  regulations  enforced by the FDA
through its facilities  inspection  program.  These  facilities must pass a pre-
approval plant inspection before the FDA will issue a pre-market approval of the
product. The FDA may also require  post-marketing  testing (Phase IV) to support
the  conclusion  of  efficacy  and  safety of the  product,  which  can  involve
significant  expense.  After FDA approval is obtained  for initial  indications,
further  clinical  trials  are  necessary  to gain  approval  for the use of the
product for additional indications.

         The testing and approval process is likely to require  substantial time
and effort,  and there can be no assurance that any FDA approval will be granted
on a timely  basis,  if at all. The approval  process is affected by a number of

                                      -17-

<PAGE>

factors,  primarily the adverse effects of the drug (safety) and its therapeutic
benefits (efficacy).  Additional  preclinical or clinical trials may be required
during the FDA  review  period and may delay  marketing  approval.  A task force
established by the FDA has recently proposed  significant changes in the design,
analysis and reporting of clinical studies  conducted under INDs, in response to
the  results of a Phase III trial of a drug by another  company in which  severe
complications  and  death  occurred.   The  task  force  recommended   increased
requirements  for reporting  adverse  effects and new, more stringent rules that
would require clinical trial investigators to assume that toxicities reported by
patients are drug-related.  If these recommendations are implemented, the length
of time and costs  associated  with  obtaining  market  approval  by the FDA are
likely to be significantly increased.

        Outside  the  United  States,  the  Company  will be  subject to foreign
regulatory  requirements  governing human clinical trials and marketing approval
for its products.  The  requirements  governing the conduct of clinical  trials,
product  licensing,  pricing and  reimbursements  vary  widely  from  country to
country.

FDA STATUS/CONTINUING RESEARCH AND DEVELOPMENT

         IND  APPLICATION.  Drs.  Somers and Wynn filed the IND  application  on
March 9, 1987. The results of four pre-clinical  animal studies with no toxicity
noted, were incorporated within the IND Application for FDA approval.

         HUMAN  TESTING.  The Phase I Clinical  Study  involving 24 healthy male
subjects, was concluded with little or no toxicity observed.

         Since  Esterom(R)  maintained a clear toxicity profile and was shown to
be safe in both animals and in healthy male volunteers  when applied  topically,
the FDA approved a protocol for a Phase II Clinical Study. The Phase II clinical
study  involved a  double-blind,  randomized,  placebo-controlled  investigation
designed to continue to look for adverse  effects and to determine  the efficacy
of Esterom(R) as compared to a placebo in patients who have an impaired range of
motion  resulting from acute lower back sprain and acute painful  shoulder.  The
Phase  II  Clinical  Study  involved  97  patients,  each of whom  received  two
applications  of  Esterom(R)  or  placebo,  with the  second  application  being
performed 24 hours after the first. Overall,  Esterom(R) provided relief in both
the back and shoulders which was sustained for at least seven days. There was no
clinically  observed local anesthetic or analgesic  effect.  The range of motion
for each  condition  was improved  significantly  when  compared  with  patients
receiving  a  placebo.  Range of motion for the  shoulder  may be defined as the
number of degrees to which the  patient may move the arm away from the side in a
forward, backward or upward direction.

         The Company has designed  the Phase III Protocol and must  complete the
Phase III studies prior to completion  of the New Drug  Application  required by
the FDA for final approval of a new prescription drug. As currently planned, the
Phase III studies  will  include  multiple  trials in a number of clinical  site
study centers in  differing geographic areas of the U.S., with approximately 300

                                      -18-

<PAGE>

patients involved in the study of which  approximately 150 patients will receive
the active  drug and 150  patients  will  receive the  placebo.  The final study
design may change according to possible new FDA  requirements.  The studies will
be double-blind and placebo-controlled. Each study will include a regimen of two
applications,  with the second  application  being  performed 24 hours after the
first and a 30 day follow up.

        The Company  recently  entered into an agreement with the Western Center
for Clinical Studies ("WCCS"), a California corporation  experienced in managing
pharmaceuticals  which  are at an  early  stage  of  development  and  providing
assistance to companies in the process of taking pharmaceutical  products to the
FDA and  through  the IND and NDA  stages of  development  in a timely and cost-
efficient manner.  WCCS has developed a business plan to accomplish the scope of
its work and will assist the Company in implementing  its overall business plan.
In addition, WCCS will provide additional experienced management with the intent
of assisting the Company in developing its product, Esterom(R), to be able to be
used  commercially.  WCCS will  arrange  for and oversee  necessary  studies and
clinical trials of Esterom(R),  appoint and utilize the services of a Scientific
and Medical Advisory Board for the Company,  assist in developing a distribution
plan, and identify and propose  strategic  partners and/or  distributors for the
Company's product.  All work performed by WCCS will be provided by employees and
consultants of WCCS, as the Company's  subcontractor.  It is estimated that WCCS
will complete the scope of its project  within 33 months,  commencing  April 18,
1998.

        Through Phase II, all CMC work was  performed at the Medical  University
of South  Carolina's  Pharmaceutical  Development  Center,  College of Pharmacy.
Mallinckrodt,  Inc.  ("Mallinckrodt"),  a leading  manufacturer of chemicals and
drugs has  agreed to  continue  to  develop  Esterom(R)  to meet all FDA and GMP
requirements, develop a Drug Master File, file all appropriate CMC documentation
with the FDA,  supply Phase III clinical study  material,  and  manufacture  the
product  to be used  commercially.  WCCS  will  advise  the  Company  concerning
appropriate monitoring procedures to manage the Company's manufacturing contract
with  Mallinckrodt and seek  alternative  companies which have the capability of
manufacturing  the  Company's  product,  in an effort to minimize any  potential
delays or setbacks. See THE COMPANY - PROPOSED MANUFACTURING PLANS.

        Esterom(R) is presently a Schedule II controlled substance. However, the
results of Phase I and Phase II Clinical Trials showed no central nervous system
activity,  elevated  blood  pressure,  increase in heart rate or  euphoria.  The
Company  believes  that the  components  of the  medicine do not cross the blood
brain barrier, and consequently,  it is expected that there is no propensity for
abuse.  Therefore,  an  application  has  been  made  to  the  Drug  Enforcement
Administration  ("DEA") to reclassify  Esterom(R)  and delist it as a controlled
substance.

SUMMARY OF PHASE I/II FINDINGS

        Based  on its clinical studies, the Company believes that Esterom(R) may
involve a new and unique  mechanism  of action.  The Phase I Study  demonstrated
that the product does not cause detectable  systemic effects including no effect
on the cardiovascular system. During the Study,

                                      -19-

<PAGE>

Esterom(R) caused no significant adverse events and was observed to be safe. The
Company confirmed that in Phase I and Phase II trials, no anesthetic activity or
vasoconstrictive activity was observed.

        Although the precise  function of Esterom(R) is not known, the medicinal
preparation is neither a local anesthetic nor analgesic.  An anesthetic relieves
pain at rest and pain with  movement.  An analgesic  relieves major pain at rest
and provides  minor pain relief with  movement.  In comparison  and according to
patient evaluations,  Esterom(R) provides minor relief of pain at rest and major
relief of pain during movement.

PROPOSED MANUFACTURING PLANS

        Esterom(R) is made by the solvolysis of cocaine base in propylene gylcol
and water. The Company believes that the components of the medicine do not cross
the blood brain  barrier,  and  consequently,  it is  expected  that there is no
propensity for abuse.  Cocaine is controlled by the DEA under strict importation
regulations  specified  in  law.  To the  Company's  knowledge,  Stepan  Company
("Stepan")  is the only company that can import coca leaves and process them for
the  extraction  of cocaine  bases.  This base is shipped  to  Mallinckrodt  for
purification  and  sale  on  the  medical  and  scientific  market.  Stepan  and
Mallinckrodt  work with the DEA to set  annual  quotas  for  importing  the coca
leaves  related to projected use and sale of the processed  cocaine.  Because of
federal  restrictions,  Esterom(R) can not be manufactured outside of the United
States for sale in the United States. As a result, Mallinckrodt is currently the
sole source for cocaine and for producing Esterom(R).

        Mallinckrodt  has  supplied  all  of  the  Company's   cocaine  for  the
laboratory manufacturing of the product for use in research and clinical trials,
and has been aware of the  development of the drug since the IND application was
filed. In January 1997, the Company entered into 10 year  Development and Supply
Agreements  with  Mallinckrodt,  Inc.  ("Mallinckrodt")  to  develop  all of the
chemistry,  manufacturing and controls  necessary to comply with the drug master
file of the FDA, as well as supply the bulk active  product  for  marketing.  In
exchange for these services,  Mallinckrodt  will receive  exclusive  rights as a
supplier of the bulk active  product to the  Company in North  America.  For the
year ended  December 31, 1997,  the contract  price of the  ingredient was fixed
based on the number of liters ordered by the Company.  In subsequent  years, the
cost per liter will be adjusted  based on changes in the price of the components
in the bulk active product..  Although Mallinckrodt believes it can increase the
coca leaf  importation  quotas to supply the bulk active  material as  required,
there is no assurance that sufficient  importation quotes can be maintained,  or
that additional  governmental  regulations are not imposed on the Company or its
suppliers, which may affect the Company's ability to market the product.

PROPOSED MARKETING PLANS

         The Company  plans to market its products  through  strategic  partners
and/or distributors.  WCCS has developed a business plan to accomplish the scope
of its work and will assist the  Company in  implementing  its overall  business

                                      -20-

<PAGE>

plan. In addition,  WCCS will provide additional experienced management with the
intent of assisting the Company in  developing  its product,  Esterom(R),  to be
able to be used  commercially.  With the  assistance  of WCCS,  the Company will
develop a distribution plan and identify and propose  strategic  partners and/or
distributors for the Company's product.

ROYALTY COMMITMENTS

        In 1993, the Company entered into a 30 year compensation  agreement with
the limited  partners of I.B.C.,  a California  limited  partnership,  who owned
64.28% of the limited partnership.  The I.B.C. Limited Partnership  participated
in the early  development  of  Esterom(R)  and owned the patent  rights to three
patents  and  all  intellectual   property  rights.   Under  the  terms  of  the
compensation agreement,  the Company acquired all of the patent and intellectual
property  rights in exchange for certain  compensation  to the limited  partners
which  is  dependent  upon  the  Company's  receipt  of  a  marketing  partner's
technological access fee and royalty payments.  The partnership was subsequently
dissolved.  Compensation under the agreement includes a bonus payment of $96,420
to be paid at the time the  Company is  reimbursed  by a drug  company  for past
expenses  paid for  development  of the drug,  as well as 64.28% of a decreasing
payment rate (3% to 1%) on cumulative annual royalties  received by the Company.
As of December 31, 1997, no  liabilities  have been accrued with respect to this
agreement.

        In a  separate  agreement  with a former  I.B.C.  limited  partner,  the
Company has agreed to pay the partner 35.72% of a decreasing  earned payment (3%
to 1% on cumulative  annual sales of products by the Company)  until October 10,
2004.  From October 10, 2004 until  October 10,  2014,  the Company will pay the
partner 17.86% of the earned  payment.  In accordance  with the  agreement,  the
Company has agreed to pay the former limited partner the amount of $40,000 and a
minimum earned payment of $3,572 per calendar quarter  beginning on December 31,
1989. Such minimum earned payment is to be evidenced by a promissory note issued
each quarter and payable when the Company is either reimbursed for expenses paid
for the  development of the medicine or from the first income  received from the
Company from net sales of the medicine. The quarterly payments are to be applied
against the earned payment to be received by the limited partner. As of December
31, 1997, the total liability accrued with respect to this agreement  aggregated
$155,495. See FINANCIAL STATEMENTS - NOTE 6.

PATENTS

         Esterom(R) is protected by a U.S.  Composition  Patent granted December
27, 1994 which includes  safeguarding the discovery of three new molecules.  The
Company's patents are as follows:  Patent #5,559,123  granted September 24, 1996
with the Company as Assignee;  Patent #5,525,613  granted June 11. 1996 with the
Company as Assignee;  and, Patent #5,376,667  granted December 27, 1994 with the
Company as Assignee.  In addition,  Dr. Lowell M. Somers  obtained the following
initial  patents  which he  subsequently  assigned to the Company in  September,
1992;  #4,512,996  granted April 1985; Patent #4,469,700 granted September 1984;
and, Patent #4,556,663 granted December, 1985. Although the Company has obtained

                                      -21-

<PAGE>

approval on Patent Application  #5,556,663,  the Patent has not yet been issued.
The Company has estimated that an aggregate of  approximately 17 years of patent
protection remains.

         Drs.  Wynn and Somers have  assigned to the  Company  their  respective
rights to the U. S. Patents and for foreign  countries.  In December,  1993,  an
International  Patent  Application was filed under the Patent Cooperation Treaty
in the  U.S.  Receiving  Officer,  whereby  the  Company's  technology  will  be
protected for a significant market worldwide.

EMPLOYEES

         As of December 31, 1997, the Company had no full time employees.  As of
the date  hereof,  the  Company  has two full time  employees  at its  corporate
headquarters  in  Indio,  California.  The  Company  has  subcontracted  with an
individual  for  corporate  financial  services.  In  addition,  the Company has
subcontracted  with WCCS for  purposes of  completing  the testing  requirements
necessary for FDA approval for the Company's  product,  Esterom(R) for a term of
33 months.  Officers of WCCS presently  serve in the following  positions in the
Company: Daniel L. Azarnoff,  President;  Lois Rezler, Vice President of Science
and Regulatory  Affairs;  and, Roy S. Azarnoff,  Chief Operating  Officer.  Drs.
Azarnoff,  Rezler and Azarnoff will not receive  compensation in addition to the
management fees paid to WCCS by the Company,  for their services rendered to the
Company as its officers.  Daniel Azarnoff will serve as the Company's  president
until such time as the Company hires an  experienced  individual to serve as its
President.  Ms.  Rezler  and  Roy  Azarnoff  shall  serve  in  their  respective
capacities until the termination of the WCCS contract.

        The scientific,  medical and chemical  development of Esterom(R) to date
has been done under  contract  with the Medical  University  of South  Carolina,
College of Medicine and the College of Pharmacy, Charleston, South Carolina. See
MANAGEMENT.

PROPERTIES

         The  Company  leases 800 square feet of office  space as its  corporate
headquarters in Indio, California from one of its principal stockholders, Thomas
T.  Anderson,  for a monthly rent of $1,040,  for a two year term which  expires
February 1, 2000,  which the Company believes is market or below market rate for
comparable office space.

        The  Company  will  seek  additional  office  space in  Woodland  Hills,
California in order to provide facilities for the WCCS office staff. The present
market rate for office space in Woodland Hills,  California ranges from $1.80 to
$2.00 per square foot per month and the Company anticipates that it will require
approximately 3,000 square feet of office space.

                                      -22-

<PAGE>

COMPETITION

        The pharmaceutical  industry is characterized by intense competition and
is subject to rapid and significant  technological  change.  Rapid technological
development may cause the products to become obsolete before the Company recoups
all or any portion of the related expenses.  The Company's  competitors  include
major pharmaceutical  companies,  biotechnology firms and universities and other
research institutions,  both in the United States and abroad, which are actively
engaged in research and development of products in the  therapeutic  areas being
pursued by the Company.  Most of the Company's  competitors  have  substantially
greater  financial,  technical,  manufacturing,  marketing  and  human  resource
capabilities than the Company.  In addition,  many of the Company's  competitors
have  significantly  greater  experience in testing new or improved  therapeutic
products  and  obtaining  regulatory  approvals of  products.  Accordingly,  the
Company's  competitors may succeed in obtaining regulatory approval for products
more rapidly than the Company. If the Company commences  significant  commercial
sales of its products,  it will also be competing with respect to  manufacturing
efficiencies  and  marketing   capabilities,   areas  in  which  it  has  little
experience.

                                LEGAL PROCEEDINGS

        The  Company is not a party to any legal  proceedings  which  management
believes to be material, and there are no such proceedings which are known to be
contemplated.

                                   MANAGEMENT

        The following table sets forth the names and positions of the directors,
executive officers and key employees of the Company:
<TABLE>
<CAPTION>
      Name                      Age          Officer or Position           Director Since
      ----                      ---          -------------------           --------------
<S>                             <C>          <C>                           <C>
Higgins D. Bailey               68           Chairman of the Board         July, 1992

Daniel L. Azarnoff, M.D.        71           President and Director        January, 1998

Donald Hunter                   64           Secretary and Director        January, 1998

Dewey H. Crim                   61           Principal Accounting          February, 1998
                                             Officer, Treasurer and
                                             Director

Lois Rezler, Ph.D.              46           Vice President-Science
                                             and Regulatory Affairs

Roy S. Azarnoff, Ph.D.          67           Chief Operating Officer

Wellington A. Ewen              58           Chief Financial Officer

James E. Wynn, Ph.D.            56           Director                      February, 1998
</TABLE>

                                  -23-

<PAGE>

         The  directors of the Company are elected to hold office until the next
annual meeting of shareholders and until their  respective  successors have been
elected and qualified. Officers of the Company are elected annually by the Board
of Directors and hold office until their successors are elected and qualified.

         The following sets forth biographical information concerning the
Company's directors and executive officers for at least the past five years.

         HIGGINS D. BAILEY has been an officer and director of the Company since
July 1992 serving as its President and Chief Executive  Officer and is currently
the  Chairman of the Board of the  Company.  From 1995 to 1996,  Mr.  Bailey was
Interim President and Chief Executive Officer for the Pharmaceutical Educational
and  Development  Foundation  at  the  Medical  University  of  South  Carolina,
Charleston,  South Carolina,  which formulates and  manufactures  pharmaceutical
products.  From 1991 to  present,  he was also  business  manager  for Thomas T.
Anderson  Law Firm,  Indio,  California.  Prior to 1991,  Mr.  Bailey  owned and
operated  various travel and tour related  companies which  subsequently  merged
into larger organizations.  In addition,  Mr. Bailey was an educator for over 25
years.  Mr.  Bailey  received a B.A.  degree in biology from Eastern  Washington
University,  a M.S.  degree in  program  planning  and  personnel  and Ed.D.  in
administration  and  management  from the  University of  California,  Berkeley,
California.

         DANIEL L.  AZARNOFF,  M.D.,  has been a director of the  Company  since
February  1998 and was  appointed  President of the Company in April 1998.  From
1988 to  present,  Dr.  Azarnoff  has  served  as  President  of D. L.  Azarnoff
Associates,  a company  engaged in  consulting  for various  pharmaceutical  and
biotechnology  companies  including Sandoz,  Orion Pharma,  DeNovo,  Inc., Cibus
Pharmaceutical and Cellegy Pharmaceuticals, Inc. From 1978 to 1985, Dr. Azarnoff
was  Corporate  Senior Vice  President  of G.D.  Searle & Co., an  international
pharmaceutical company, and from 1978 through 1985 served as President of Searle
Research and  Development,  a division of G. D. Searle & Co. Dr. Azarnoff was on
the  faculty of the  University  of Kansas  Medical  School  ("KUMC")  from 1962
through 1978 rising to the rank of KUMC Distinguished  Professor of Medicine and
Pharmacology.  Dr.  Azarnoff  has also held faculty  positions  at  Northwestern
University  Medical School,  the University of Chicago Medical School, St. Louis
University  School of  Medicine  and was a Fulbright  Scholar at the  Karolinska
Institute in Stockholm,  Sweden. Dr. Azarnoff is a member of various medical and
honorary  societies  including the Institute of Medicine of the National Academy
of Sciences.  He has lectured  extensively within and outside the United States,
and  published  numerous  scientific  articles  and books on various  aspects of
clinical  pharmacology.  Dr. Azarnoff has served on various advisory committees,
including the Endocrine and Metabolism  and other Ad Hoc advisory  committees of
the Food and Drug  Administration,  World Heath  Organization,  American Medical
Association,  National Institutes of Health and National Research Council of the
National  Academy of Sciences.  Dr. Azarnoff has served on the Science  Advisory
Board of various  corporations which include  Neurobolobical  Technology,  Inc.,
Gilead Science,  Inc.,  Oread,  Inc., Cibus  Pharmaceutical  and Sandoz Research
Institute.  Dr. Azarnoff has served or is serving as a director on the following
privately held pharmaceutical drug and development companies: Oread, Inc., Cibus
Pharmaceutical  and  DeNovo,   Inc.  Dr.  Azarnoff  serves  as  Vice  President,

                                      -24-

<PAGE>

Medical/Regulatory  Affairs for Cellegy  Pharmaceutical,  Inc. None of the above
corporations  are  developing  drugs  similar  to the  Company's  products.  Dr.
Azarnoff  received a B.S.  degree in biology and a M.S.  degree in zoology  from
Rutgers University.  Dr. Azarnoff received an M.D. degree from the University of
Kansas Medical School.

         DONALD  HUNTER has been a director  and the  Secretary  of the  Company
since January 1998. Since 1994, Mr. Hunter has served as a consultant to Entergy
Corporation   as   well   as   other    industrial    concerns    dealing   with
mergers/acquisitions  and other  business  matters.  From  1991 to 1994,  he was
senior vice president of Entergy  Corporation and was responsible for the merger
activities with Gulf States  Utilities.  Prior to 1991, Mr. Hunter was president
and chief  operating  officer of Louisiana  Power & Light  Company and executive
vice president and chief operating  officer of New Orleans Public Service,  Inc.
In  addition,  he has served on the board of  directors of a number of companies
and service companies. His prior business affiliations include positions as vice
president for Yankee Atomic  Electric,  president and majority  owner of Pioneer
Steel  Company,   and  various   executive   positions  with  Helix   Technology
Corporation.  Mr. Hunter  received a B.S.  degree in chemical  engineering  from
Purdue University and a M.S. in nuclear engineering from Iowa State University

         DEWEY H. CRIM has been a  director  and the  Treasurer  of the  Company
since January 1998. Mr. Crim currently  serves as President and Chief  Executive
Officer of the Links Foundation,  Inc. From 1995 to 1997, he served as Executive
Vice  President  of the  Inspirational  Network,  a  national  cable  television
company. From 1980 to 1995, Mr. Crim was employed with BellSouth Corporation,  a
national  telecommunications  company,  where  he  served  as  President  of two
subsidiaries:  TechSouth,  Inc., and BellSouth Media  Technology,  Inc. Mr. Crim
later  served  as a senior  business  development  strategist  on the  BellSouth
Corporate  staff.  In addition,  his  responsibilities  included  negotiating an
alliance  between Walt Disney  Company and three  regional  telephone  companies
which subsequently became Americast  Corporation.  Mr. Crim was also founder and
President of Central Computer  Services,  Inc., a computer service company which
provided  support  services to more than 50 banks.  Mr. Crim began his career at
Electronic Data Systems Corp. in Dallas, Texas. Mr. Crim serves as a director on
the following  privately held companies:  Telecom  Wireless  Solutions,  Inc., a
wireless  telecommunications company, and Eastside Bank, a federal savings bank.
Mr. Crim received a B.S.  degree in business and accounting  from the University
of Alabama.

         LOIS REZLER,  Ph.D.  became Vice  President  of Science and  Regulatory
Affairs of the Company in April,  1998. For more than ten years,  Dr. Rezler has
been  engaged  in  consulting  for  various   pharmaceutical  and  biotechnology
corporations  including Smith Kline, Smith & Nephew,  Cheesborough  Ponds, CIBA,
Merck Sharpe Dome,  Baxter  Travenol and others.  Since January 1996, Dr. Rezler
has acted as a regulatory consultant for Western Center for Clinical Studies. On
behalf of her various  clients,  Dr. Rezler's duties and  responsibilities  have
included  working  at bench  level to assist  in drug  design  and  development,
preparing and submitting  grant  applications  to various  government  agencies,
consulting  in all  aspects of  preparing  IND and NDA  submissions  to the FDA,
including  biologics  devices,  new drugs,  priority drugs and orphan drugs. Dr.
Rezler's  duties  also  include  responsibility  for  developing  time lines and
budgets for the project.  Dr.  Rezler  received her Ph.D.  in Public Health from
Edinburgh University.

                                      -25-

<PAGE>

         ROY S. AZARNOFF, Ph.D. became Chief Operating Officer of the Company in
April,  1998. Dr. Azarnoff  currently serves as the chief operating  officer for
Western  Center for  Clinical  Studies  (since  1995),  a  consulting  firm that
provides research support  assistance to community  hospitals and medical groups
for clinical trials with pharmaceutical,  biotechnology,  diagnostic and medical
device companies,  and as Chief Executive Officer of Medical Research Consultant
Associates Inc. (since 1989), a consulting firm that provides  research  support
assistance  to community  hospitals,  research  institutes  and drug and medical
device  companies.  From 1986 to 1989,  Dr.  Azarnoff  served as director of the
Office of Research and Sponsored  Projects at California State  University,  and
from 1977-79 and  1981-83,  served as  administrator  for  Technical  Assistance
Projects at  California  State  University  Foundation.  Dr.  Azarnoff was chief
executive officer for Eldercare Management Group from 1984 to 1986. Dr. Azarnoff
developed  and then  directed  the fourth  largest  area  agency on aging in the
United  States as the  director for the Office for the Aging for the City of Los
Angeles from 1972 to 1977.  In  addition,  Dr.  Azarnoff  has authored  numerous
articles and served as assistant  professor  at Boston  University  from 1957 to
1966. Dr. Azarnoff  received his B.A. from New York University,  M.A. from State
University of Iowa and his Ph.D. in Public Health from University of Missouri.

         WELLINGTON A. EWEN has been the Company's Chief Financial Officer since
April,  1998 and has served as a consultant  to the Company  since March,  1998.
From 1988 to the  present,  Mr. Ewen is the owner and manager of  Wellington  A.
Ewen & Associates,  a business  consulting  firm in Malibu,  California.  He has
acted as a financial and accounting  officer for various  businesses during that
time. Prior to that, Mr. Ewen served as senior manager at the public  accounting
firms of Coopers & Lybrand,  Los Angeles,  California and Arthur Andersen & Co.,
New  York,  New  York.  Mr.  Ewen is a  C.P.A.  in the  States  of New  York and
California and has MBA and BS degrees from Cornell University.

         JAMES E. WYNN,  Ph.D. has been a director of the Company since February
1998.  Dr. Wynn has served as Professor and  Assistant  Dean for Research at the
Medical  University of South  Carolina.  His  responsibilities  include  faculty
development and research funding plans for the college which are currently being
implemented.  From 1969 to 1982 Dr. Wynn was a faculty  member at the University
of South  Carolina  College  where he rose to the rank of Professor of Medicinal
Chemistry.  In 1982 he assumed the  position of  Professor  and  Chairman of the
Department of Pharmaceutical Sciences,  College of Pharmacy,  Medical University
of South Carolina. In this position Dr. Wynn implemented a new Ph.D. program and
developed a viable research program in pharmaceutical  sciences.  He established
and operated  South  Carolina's  only Drug  Bioequivalence  Evaluation  Program,
serving  as  the  principal  investigator  on 25  drug  bioavailability/clinical
evaluation   trials.   Dr.  Wynn  led  the  development  of  the  Pharmaceutical
Development  Center  (PDC),  a contract  GMP facility  for the  formulation  and
manufacture of clinical supplies for the pharmaceutical  industry.  Dr. Wynn, as
the Company's scientific advisor,  co-authored the patents, supervised the final
process for laboratory  manufacturing of Esterom(R),  and the analytical work to
identify three newly  discovered  molecules.  Since 1984, Dr. Wynn has served as
co-principal  investigator for Entropin's Phase I and Phase II clinical studies.
Dr. Wynn has authored  numerous  articles  which have  appeared in scholarly and
professional  publications.  Recognized as an outstanding  educator in pharmacy,

                                      -26-
<PAGE>

Dr.  Wynn  received  45  teaching  awards  over  the  past 20  years,  including
recognition as the 1995 South Carolina  "Governor's  Professor of the Year". Dr.
Wynn received his B.S.  degree in pharmacy and his Ph.D. in medicinal  chemistry
with a minor in  analytical  chemistry  from the  Medical  College of  Virginia,
Virginia Commonwealth University, Richmond, Virginia.

         All directors hold office until the next annual meeting of stockholders
and the election and  qualification of their  successors.  Directors  receive no
compensation for serving on the Board of Directors other than the  reimbursement
of  reasonable  expenses  incurred in attending  meetings.  Officers are elected
annually by the Board of Directors and serve at the discretion of the Board. The
Company has not entered into any employment  agreements or other  understandings
with its directors or executive officers concerning compensation.

         Daniel L. Azarnoff, M.D., the Company's president and director, and Roy
S. Azarnoff, Ph.D., the Company's chief operating officer, are brothers.

         Currently,  the Company does not have an Audit  Committee or Scientific
Advisory Committee.  However,  the Board of Directors of the Company anticipates
appointing  independent directors to serve on an Audit Committee within the near
future.  In addition,  the Company has identified  members of the scientific and
medical  community  and  anticipates  the  formation  of a  Scientific  Advisory
Committee  to advise and  consult  with the Board of  Directors  within the near
future.

                             EXECUTIVE COMPENSATION

SUMMARY COMPENSATION TABLE

         During the year ended  December 31,  1997,  no executive of the Company
received in excess of $100,000 in salary and/or bonuses.  Drs. Azarnoff,  Rezler
and Azarnoff will not receive  compensation  in addition to the management  fees
paid to WCCS by the Company,  for their services  rendered to the Company as its
officers.

STOCK OPTION PLAN

          In July 1988,  the Company  adopted a Stock  Option Plan (the  "Option
Plan")  which  provides for the  issuance of stock  bonuses or stock  options to
purchase up to 16,666 shares of Common Stock, adjusted to reflect the subsequent
recapitalization  of  the  Company,  to  employees,   officers,   directors  and
consultants  of the Company.  The  purposes of the Plan are to  encourage  stock
ownership by employees,  officers,  directors and  consultants of the Company so
that they may acquire or increase their proprietary  interest in the Company, to
(i) reward employees,  officers,  directors and consultants for past services to
the Company and (ii) encourage  such persons to become  employed by or remain in
the employ of or otherwise  continue their  association  with the Company and to
put forth maximum efforts for the success of the business of the Company.


                                      -27-

<PAGE>

         The Plan is currently  administered  by a Committee  consisting  of the
Board of Directors  and may be  administered  by a  Compensation  Committee,  if
appointed.  At its  discretion,  the Committee may determine the persons to whom
Options may be granted and the terms thereof.  As noted above, the Committee may
issue options to members of the Board.

         The terms of any Options  granted under the Plan are not required to be
identical as long as they are not  inconsistent  with the express  provisions of
the Plan. In addition, the Committee may interpret the Plan and may adopt, amend
and rescind rules and regulations for the administration of the Plan.

         Options may be granted as incentive stock options ("Incentive Options")
intended to qualify for special  treatment  under the  Internal  Revenue Code of
1986, as amended (the "Code"), or as non-qualified stock options ("Non-Qualified
Options")  which are not intended to so qualify.  Only  employees of the Company
are eligible to receive Incentive  Options.  The period during which Options may
be exercised may not exceed ten years. The exercise price for Incentive  Options
may not be less than 100% of the fair  market  value of the Common  Stock on the
date of grant;  except that the exercise price for Incentive  Options granted to
persons  owning more than 10% of the total  combined  voting power of the Common
Stock may not be less than 110% of the fair market  value of the Common Stock on
the date of grant  and may not be  exercisable  for more than  five  years.  The
exercise  price for  Non-Qualified  Options may not be less than 80% of the fair
market  value of the Common Stock on the date of grant.  The Plan defines  "fair
market value" as the last sale price of the  Company's  Common Stock as reported
on a national  securities exchange or on the NASDAQ NMS or, if the quotation for
the last sale  reported is not available  for the  Company's  Common Stock,  the
average of the closing bid and asked  prices of the  Company's  Common  Stock as
reported by NASDAQ or on the electronic bulletin board or, if none, the National
Quotation  Bureau,  Inc.'s "Pink Sheets" or, if such quotations are unavailable,
the value  determined  by the  Committee in  accordance  with its  discretion in
making a bona fide, good faith determination of fair market value.

         The Plan contains provisions for proportionate adjustment of the number
of shares  issuable  upon the exercise of  outstanding  Options and the exercise
price per share in the event of stock dividends,  recapitalizations resulting in
stock splits or combinations or exchanges of shares.

         In the event of the proposed dissolution or liquidation of the Company,
or any  corporate  separation  or  division,  including,  but  not  limited  to,
split-up,  split-off or spin-off,  merger or  consolidation  of the Company with
another  company  in  which  the  Company  is not the  survivor,  or any sale or
transfer  by the  Company of all or  substantially  all its assets or any tender
offer or exchange offer for or the acquisition,  directly or indirectly,  by any
person or group for more than 50% of the then outstanding  voting  securities of
the  Company,  the  Committee  may  provide  that the holder of each Option then
exercisable  will have the right to exercise  such  Option (at its then  current
Option  Price)  solely  for the kind and  amount  of  shares  of stock and other
securities,  property,  cash or any  combination  thereof  receivable  upon such
dissolution,   liquidation,   corporate   separation  or  division,   merger  or
consolidation,  sale or transfer of assets or tender offer or exchange offer, by
a holder of the  number of shares of Common  Stock for which such  Option  might
have been exercised

                                      -28-

<PAGE>

immediately prior to such dissolution,  liquidation,  or corporate separation or
division, merger or consolidation, sale or transfer of assets or tender offer or
exchange offer; or in the alternative the Committee may provide that each Option
granted  under  the Plan will  terminate  as of a date  fixed by the  Committee;
provided,  however,  that not less  than 30 days  written  notice of the date so
fixed  will be given to each  recipient,  who will have the  right,  during  the
period of 30 days  preceding  such  termination,  to exercise  the Option to the
extent then exercisable. To the extent that Section 422(d) of the Code would not
permit  this  provision  to apply to any  outstanding  Incentive  Options,  such
Incentive  Options will  immediately  upon the occurrence of the  dissolution or
liquidation,  etc.,  be treated for all  purposes  of the Plan as  Non-Qualified
Options and shall be immediately exercisable as such.

         Except as  otherwise  provided  under the  Plan,  an Option  may not be
exercised  unless the recipient  then is an employee,  officer or director of or
consultant  to the  Company or a  subsidiary  of or parent to the  Company,  and
unless the  recipient  has  remained  continuously  as an  employee,  officer or
director of or consultant to the Company since the date of grant of the Option.

         If the recipient  ceases to be an employee,  officer or director of, or
consultant  to, the Company or a subsidiary or parent to the Company (other than
by reason of death, disability or retirement), other than for cause, all Options
theretofore  granted  to such  recipient  but  not  theretofore  exercised  will
terminate  three months after the date the  recipient  ceased to be an employee,
officer or director of, or consultant to, the Company.

         If the recipient  ceases to be an employee,  officer or director of, or
consultant to, the Company or a subsidiary or parent to the Company by reason of
termination for cause, all Options theretofore granted to such recipient but not
theretofore  exercised will  terminate  thirty days after the date the recipient
ceases to be an employee, officer or director of, or consultant to, the Company.

         If a  recipient  dies while an  employee,  officer or  director of or a
consultant to the Company, or if the recipient's employment, officer or director
status or consulting  relationship,  shall  terminate by reason of disability or
retirement,  all Options theretofore  granted to such recipient,  whether or not
otherwise exercisable, unless earlier terminated in accordance with their terms,
may be exercised by the  recipient or by the  recipient's  estate or by a person
who acquired the right to exercise  such  Options by bequest or  inheritance  or
otherwise by reason of the death or  disability  of the  recipient,  at any time
within  one year  after  the date of  death,  disability  or  retirement  of the
recipient;  provided,  however,  that in the  case  of  Incentive  Options  such
one-year period will be limited to three months in the case of retirement.

         Options granted under the Plan are not transferable  other than by will
or by the laws of descent and  distribution or pursuant to a qualified  domestic
relations  order as  defined by the Code or Title I of the  Employee  Retirement
Income Security Act of 1974, or the rules thereunder.  Options may be exercised,
during the lifetime of the recipient,  only by the recipient and thereafter only
by his legal representative.


                                      -29-

<PAGE>

         The Committee  may suspend,  terminate,  modify or amend the Plan,  but
without shareholder approval the Board may not materially increase the number of
shares as to which Options may be granted,  change the eligibility  requirements
for persons  entitled to  participate  in the Plan or  materially  increase  the
benefits  to be received by any  participant  under the Plan.  The Board may not
adversely  affect any  Option  previously  granted  without  the  consent of the
participant. Unless sooner terminated, the Plan will expire on July 2, 1998.

OPTION GRANTS

         Currently,  the Company has issued no options pursuant to the Company's
Stock Option Plan.

STOCK COMPENSATION PLAN

         In July 1988,  the  Company  adopted a Stock Bonus Plan  ("Stock  Bonus
Plan"),  to support and increase the  Company's  ability to attract,  retain and
compensate  persons of experience  and ability and whose services are considered
valuable.

         A maximum of 16,666 shares of the Company's  common stock,  adjusted to
reflect the subsequent  recapitalization of the Company,  are issuable under the
terms of the Stock Bonus Plan.  The Stock Bonus Plan  provides for  compensation
through  the  award of Common  Stock in  payment  for  services  rendered  or in
recognition  of past  services of  performances  rendered to the Company or as a
bonus. Shares subject to a stock award are valued at not less than 100% of their
fair  market  value on the date the award is  granted,  whether  or not they are
subject to restrictions.

         The Stock  Bonus Plan is  administered  by the  Compensation  Committee
appointed  by the  Board  or,  in the  absence  of a  designated  and  qualified
Committee,  the  entire  Board  must serve as the  Committee.  Stock  Bonus Plan
participants  may be  selected  by the  Board  from:  (i) key  employees  of the
Company;  (ii)  officers  and  directors of the Company;  (iii)  consultants  or
advisors to the Company;  and a (iv) lawyer, law firm,  accountant or accounting
firm, or other  professionals or professional firms engaged by the Company.  The
Committee  has broad  discretion  to determine the number of shares which may be
granted to participants. The award of Common Stock will be granted on such terms
and  conditions as the Board  determines.  The Committee  also may interpret the
Stock  Bonus  Plan and is  empowered  to make all  other  determinations  deemed
necessary or advisable for the administration of the Stock Bonus Plan. The Board
may suspend, terminate, modify or amend the Stock Bonus Plan.

         Under the present  provisions of the Internal Revenue Code ("Code") and
regulations thereunder, the recipient of an award of common stock will recognize
ordinary  income upon award of the stock,  in an amount equal to the fair market
value of the shares on the date of the award,  and the Company  will be entitled
to a deduction  (as a  compensation  expense) in the same amount in the year the
shares are awarded.  The recipient's tax basis for the Common Stock issued under
a stock award will  generally be equal to the fair market value of the shares on
the date of award. Upon disposition of those shares,  the recipient will realize
a capital gain (or loss) equal to the  difference  between the tax basis and the

                                      -30-

<PAGE>

amount realized upon disposition. Any subsequent resale of these shares will not
result in any further tax  consequences to the Company.  The Stock Bonus Plan is
not qualified under Section 401(a) of the Code.

         Stock  awards  granted  under the Stock Bonus Plan confer no right upon
any participant  with respect to continuation of employment and do not interfere
with the employee's or the Company's right to terminate employment at any time.

LIMITATIONS ON DIRECTORS' AND OFFICERS' LIABILITY

         The Company's Amended Articles of Incorporation  limit the liability of
directors to  shareholders  for monetary  damages for breach of a fiduciary duty
except in the case of liability:  (i) for any breach of their duty of loyalty to
the Company or its shareholders; (ii) for acts or omissions not in good faith or
which involve  intentional  misconduct or a knowing  violation of law; (iii) for
unlawful distributions as provided in Section 7-108-403 of the Colorado Business
Corporation  Act; or (iv) for any transaction from which the director derived an
improper personal benefit.

         The  Company's  Articles of  Incorporation  and Bylaws  provide for the
indemnification  of directors and officers of the Company to the maximum  extent
permitted  by  law,   including  Section  7-109-102  of  the  Colorado  Business
Corporation Act, against all liability and expense  (including  attorneys' fees)
incurred  by reason  of the fact that the  officer  or  director  served in such
capacity for the  Company,  or in a certain  capacity for another  entity at the
request of the Company.  Section 7- 109-102 of the Colorado Business Corporation
Act  provides  generally  for  indemnification  of directors  against  liability
incurred  as a result of  actions,  suits or  proceedings  if they acted in good
faith and in a manner  they  reasonably  believed to be in or not opposed to the
best interests of the Company.

         On January  29,  1998,  the Company  obtained  Directors  and  Officers
indemnity liability insurance coverage,  including securities coverages,  in the
amount of $3,000,000  which  indemnifies the Company against claims,  as well as
provides  coverage  against any claims against the officers and directors of the
Company  which (i) the  Company is not legally  permitted  or required to pay or
(ii) when the  Company  is legally  required  or  permitted  to pay such loss as
indemnity  to the  Directors  and  Officers but cannot in fact pay such loss due
solely to the financial insolvency of the Company.

         There is no pending  litigation  or  proceeding  involving  a director,
officer,  employee or other agent of the Company as to which  indemnification is
being or may be sought,  and the  Company  is not aware of any other  pending or
threatened  litigation  that may  result in claims  for  indemnification  by any
director, officer, employee or other agent.



                                      -31-

<PAGE>

                 SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS
                                 AND MANAGEMENT

         On January 15, 1998,  the Company  effected a reverse  stock split of 1
share for each 300 shares of its Common Stock issued and  outstanding.  Pursuant
to the terms of the Merger  Agreement,  the Company  issued shares of its Common
Stock and Series A Preferred  Stock to the  shareholders  of Old  Entropin as of
January 15,  1998 on the basis of one share of the  Company's  Common  Stock and
Series A Preferred  Stock for each one share of Old  Entropin  common  stock and
Series A preferred  stock issued and  outstanding  which resulted in a change in
control of the beneficial ownership of the Company.

         The following table sets forth, as of the date hereof, the ownership of
the Company's Common Stock and Series A Preferred Stock by (i) each director and
executive officer of the Company,  (ii) all executive  officers and directors of
the  Company  as a  group,  and  (iii)  all  persons  known  by the  Company  to
beneficially  own more than 5% of the  Company's  Common Stock  and/or  Series A
Preferred  Stock.  Not included are up to 450,000  options to be issued to WCCS,
certain  officers of which also serve as officers of the Company.  See INTERESTS
OF MANAGEMENT AND OTHERS IN CERTAIN TRANSACTIONS.
<TABLE>
<CAPTION>
                                                 Common Stock                     Series A Preferred Stock
                                                 ------------                     ------------------------
                                       Amount and                               Amount and
                                       Nature of                                Nature of
Name and Address                       Beneficial            Percent            Beneficial         Percent
 of Shareholder                       Ownership(1)           of Class          Ownership(1)        of Class
- ----------------                      ------------           --------          ---------           --------
<S>                                  <C>                       <C>             <C>                 <C>
Higgins D. Bailey                    1,404,093 (2)             23.4%           178,000              5.6%
45926 Oasis Street
Indio, CA 92201

Thomas T. Anderson                   1,404,093 (3)             23.4%           710,041(4)          22.1%
45926 Oasis Street
Indio, CA 92201

Milton D. McKenzie                   1,650,417 (5)             27.5%                -0-            -0-
45926 Oasis Street
Indio, CA 92201

Caroline T. Somers                   1,005,793                 16.8%           822,446(6)          25.6%
233 Paulin, No. 8512
Calexco, CA 92231

Lowell M. Somers                     1,005,793 (7)             16.8%           822,446             25.6%
233 Paulin, No. 8512
Calexco, CA 92231
</TABLE>

                                      -32-

<PAGE>
<TABLE>
<CAPTION>
                                                 Common Stock                     Series A Preferred Stock
                                                 ------------                     ------------------------
                                       Amount and                               Amount and
                                       Nature of                                Nature of
Name and Address                       Beneficial            Percent            Beneficial         Percent
 of Shareholder                       Ownership(1)           of Class          Ownership(1)        of Class
- ----------------                      ------------           --------          ---------           --------
<S>                                 <C>                        <C>           <C>                   <C>
James E. Wynn                          518,085                  8.6%         1,500,000             46.7%
306 Ayers Circle
Summerville, SC 29485

Donald Hunter                          150,000 (8)              2.5%                -0-            -0-
598 Kinzie Island Court
Sanibel, FL 33957

Dewey H. Crim                           20,000 (9)              0.3%                -0-            -0-
242 Southern Hills Drive
Duluth, GA 30039

Daniel L. Azarnoff, MD                      -0-                -0-                  -0-            -0-
433 Airport Blvd., Suite 419
Burlingame, CA 94010-2014

Wellington A. Ewen                          -0-                -0-                  -0-            -0-
45926 Oasis Street
Indio, CA 92201

Lois Rezler                                 -0-                -0-                  -0-            -0-
433 Airport Blvd., Suite 419
Burlingame, CA 94010-2014

Roy Azarnoff                                -0-                -0-                  -0-            -0-
433 Airport Blvd., Suite 419
Burlingame, CA 94010-2014

All Directors and Executive          2,092,178                34.5%          1,678,000            52.3%
Officers as a group (8 persons)
</TABLE>
- ----------------
(1)      Calculated  pursuant to Rule 13d-3(d) of the Securities Exchange Act of
         1934.  Unless otherwise stated below,  each such person has sole voting
         and  investment  power  with  respect  to all such  shares.  Under Rule
         13d-3(d),   shares  not  outstanding  which  are  subject  to  options,
         warrants,  rights or conversion  privileges  exercisable within 60 days
         are deemed  outstanding  for the purpose of calculating  the number and
         percentage owned by such person, but are not deemed outstanding for the
         purpose  of  calculating  the  percentage  owned by each  other  person
         listed.
(2)      Owned in joint tenancy  with  Shirley A. Bailey,  the spouse of Higgins
         D. Bailey.
(3)      Held of record by Higgins D. Bailey as security  for a loan made by Mr.
         Bailey to Mr.  Anderson.  Milton D. McKenzie has sole voting power with
         respect to these shares.
(4)      Held of record by David M.  Chapman and Samuel F.  Trussell as security
         for deferred  compensation owed to Messrs.  Chapman and Trussell by Mr.
         Anderson.
(5)      Including  1,404,093  shares held in the name of Higgins D. Bailey,  as
         pledgee in  connection  with a loan made by Higgins D. Bailey to Thomas
         T. Anderson  which  is collateralized by the shares, and over which Mr.

                                      -33-

<PAGE>

          McKenzie  has sole voting  power as a result of an  irrevocable  proxy
          granted to Mr. McKenzie by Mr. Anderson in connection with a loan made
          by Mr.  McKenzie to Mr. Anderson which is  collateralized  by the same
          shares. In addition,  includes 143,490 Shares held of record by CapMac
          Eighty-two,  a limited  partnership of which Mr. McKenzie is a general
          partner.
(6)       Includes 822,446 shares of Series A Preferred Stock owned by Lowell M.
          Somers, the spouse of Caroline T. Somers.
(7)       Includes 1,005,793 shares of Common Stock owned by Caroline T. Somers,
          the spouse of Lowell M. Somers.
(8)       Of these shares,  10,000 shares are held in the name of Deloras Decker
          Hunter,  Trustee of the  Deloras  Decker  Hunter  Generation  Skipping
          Trust.  Deloras  Decker  Hunter is the  spouse of Mr.  Hunter  and Mr.
          Hunter is deemed to have voting control over these 10,000  shares.  In
          addition,  these shares  include  60,000  shares  underlying an option
          assigned to Mr. Hunter in January, 1998. (9) These shares are owned in
          joint tenancy with Virginia Crim, the spouse of Dewey H. Crim.


           INTERESTS OF MANAGEMENT AND OTHERS IN CERTAIN TRANSACTIONS

         During 1997, the Company received advances from a stockholder  totaling
$15,000.  The  advances did not bear  interest and were payable upon demand.  In
addition, during 1996 and 1997, the Company was advanced an aggregate of $83,873
by a stockholder  from the  stockholder's  personal  line of credit.  In January
1998, the above  referenced debts were paid in full, along with interest charges
incurred by the stockholder resulting from the advances.

         The  Company  had  accrued  the  following   long-term   debt  owed  to
stockholders at December 31, 1996 and 1997:
<TABLE>
<CAPTION>
                                                                        1996            1997
                                                                        ----            ----
<S>                                                                  <C>            <C>
8% Note payable - Stockholder,  issued for cash advances,
principal plus accrued interest due December 31, 2000,
unsecured                                                            $  631,678     $  631,678

8% Note payable - Stockholder, issued for cash advances,
principal plus accrued interest due December 31, 2000,
unsecured                                                               178,000        178,000

8% Note payable - Stockholder, issued for past services,
principal plus accrued interest due December 31, 2000,
unsecured                                                               731,678        731,678

Accrued interest payable                                                 60,341        169,131
                                                                     ----------     ----------
                                                                     $1,601,697     $1,710,487
                                                                     ==========     ==========
</TABLE>

         On January 15, 1998,  the Company  converted all above noted  long-term
debt plus accrued  interest to 1,710,487  shares of the Company's  redeemable 8%
non-voting, non-cumulative Series A Preferred Stock at $1 per share, for a total
of $1,710,487.


                                      -34-

<PAGE>

         During November 1997, the Company began  negotiating with James E. Wynn
regarding  compensation for research and development services provided since the
inception  of the  Company.  In exchange  for these past  services,  the Company
agreed to issue an 8% note payable to the individual in the principal  amount of
$1,500,000  maturing  December  31,  2000.  Subsequent  to year end, the Company
converted this obligation to 1,500,000 shares of its non-voting,  non-cumulative
redeemable  Series A preferred  stock,  at $1.00 per share.  In December,  1997,
certain  shareholders of the Company contributed a portion of their common stock
to Dr. Wynn as partial settlement for research and development services (259,042
shares  valued at  $518,000,  approximately  $2.00 per  share).  The expense and
related capital  contributions were reflected at December 31, 1997. Dr. Wynn was
subsequently appointed a Director to the Company's Board in February, 1998.

         In January 1998,  the Company  entered into an agreement  with James E.
Wynn,  a director  of the  Company,  whereby  the  Company  granted  Dr.  Wynn a
non-exclusive  right to  develop  new  products  that  contain  the same  active
ingredients as Esterom(R),  but are  formulated  differently.  All rights to the
improved products will remain the exclusive property of the Company and Dr. Wynn
will  receive two (2%)  percent  royalties  on the net sales of all new improved
products. The expiration date of this agreement is January 1, 2003.

         In February 1998, the Company entered into a lease arrangement with one
of its principal  shareholders,  Thomas T. Anderson.  The lease  encompasses 800
square feet of office space at a monthly rate of $1,040.

         On February  16, 1998,  the  Company's  Board of  Directors  approved a
contract  between the Company and Dr. Wynn,  whereby Dr. Wynn will manufacture a
duplicate sample of the Phase II clinical material necessary for quality control
of the clinical supply manufactured in the Mallinckrodt laboratories.

         On April 18, 1998,  the Company  entered into an agreement with Western
Center for Clinical  Studies  ("WCCS") whereby WCCS agreed to assist the Company
in  completing  the  Phase III  study  and NDA  Phase  for FDA  approval  of the
Company's product,  Esterom(R), in exchange for $880,400 and options to purchase
an aggregate of 450,000 shares of the Company's  common stock at $1.50 per share
over a five (5) year period.  Officers of WCCS presently  serve in the following
positions in the  Company:  Daniel L.  Azarnoff,  President;  Lois Rezler,  Vice
President  of Science  and  Regulatory  Affairs;  and,  Roy S.  Azarnoff,  Chief
Operating  Officer.  Dr.  Daniel L.  Azarnoff  has served as a  director  on the
Company's Board of Directors since January, 1998.

                            DESCRIPTION OF SECURITIES

COMMON STOCK

         The Company is authorized  to issue up to  50,000,000  shares of Common
Stock,  $.001 par value. There are 6,000,051 shares presently  outstanding.  All
shares of Common Stock have equal  voting  rights and,  when validly  issued and
outstanding,  have one  vote  per  share  in all  matters  to be  voted  upon by
shareholders.  The  shares of Common  Stock  have no  preemptive,  subscription,

                                      -35-

<PAGE>

conversion  or  redemption  rights  and may be  issued  only as  fully  paid and
non-assessable  shares.  Cumulative  voting in the  election of directors is not
allowed,  which means that the holders of a majority of the  outstanding  shares
represented  at any  meeting at which a quorum is present  will be able to elect
all of the directors if they choose to do so and, in such event,  the holders of
the remaining shares will not be able to elect any directors.  On liquidation of
the Company,  each common shareholder is entitled to receive a pro rata share of
the Company's assets available for distribution to common shareholders.

PREFERRED STOCK

         The Company is authorized  to issue up to a total of 10,000,000  shares
of preferred stock,  $.001 par value,  with the shares to be issued in series by
the  Board of  Directors.  The  Company's  Board  of  Directors  has  designated
3,210,487  shares of preferred  stock as Series A Preferred  Stock, of which all
were  issued.  There are five (5)  holders of record of the  Company's  Series A
Preferred Stock. The remaining shares of preferred stock may be issued in one or
more series from time to time with such  designations,  rights,  preferences and
limitations as the Company's board of directors may determine  without  approval
of its shareholders.  Series A Preferred Stock is designated as redeemable eight
(8%) percent non-cumulative non-voting preferred stock with $.001 par value. The
Series  A  Preferred  Stock  is  redeemable  only  from  20% to  50%  of  annual
"Earnings", but not to exceed "Net Cash Flow from Operating Activities" as those
terms are defined under GAAP.  The Series A Preferred  Stock will  automatically
expire on January 16, 2005 if not fully redeemed within that time period.

          The rights,  preferences  and limitations of separate series of serial
preferred  stock may differ with respect to such matters as may be determined by
the Company's  Board of Directors,  including  without  limitation,  the rate of
dividends,  method or nature or prepayment of  dividends,  terms of  redemption,
amounts payable on liquidation,  sinking fund provisions,  conversion rights and
voting rights.  The ability of the Board to issue  preferred stock could also be
used by it as a means for  resisting  a change of control of the Company and can
therefore be considered an "anti-takeover" device.

OPTION/WARRANTS

         The Company has issued  options to  purchase  an  aggregate  of 180,001
shares of the Company's common stock to certain individuals at an exercise price
of $2.80 per share for a period of five (5) years ending October 28, 2003.

DIVIDEND POLICY

         Dividends are payable on Common Stock when,  as, and if declared by the
Board of Directors out of funds legally  available to pay dividends,  subject to
any preferences  which may be given to holders of preferred  stock.  The Company
has paid no cash  dividends to date and it does not  anticipate  payment of cash
dividends in the foreseeable future.

                                      -36-

<PAGE>

STOCK TRANSFER AGENT

         The Company has designated Corporate Securities Transfer, Inc., Denver,
Colorado as its transfer agent for the Common Stock.

                            SELLING SECURITY HOLDERS

         This Prospectus  covers the proposed sale of 5,880,002 shares of Common
Stock which includes  300,000 shares which the Company has agreed to register on
behalf of purchasers in Old Entropin's  Private Placement  completed in December
1997 and 180,001 shares  underlying  options granted to certain Selling Security
Holders.

         The Company will not receive any of the  proceeds  from the sale of the
Shares by the Selling Security  Holders.  The Company will receive cash proceeds
from the exercise, if any, of outstanding options of up to $504,000 in cash.

         The  following  table sets forth  certain  information  concerning  the
beneficial  ownership  of  Common  Stock  and  Preferred  Stock by each  Selling
Security  Holder as of April 24, 1998. No shares of Series A Preferred Stock are
being registered hereby.
<TABLE>
<CAPTION>
                                                                   Shares of Common Stock
                                                                    Owned After Offering
                                Shares          Shares of          -----------------------                    Shares of
                               of Common         Common                                        Shares of      Series A
                              Stock Owned        Stock                                         Series A       Preferred
                               Prior to          Offered                                       Preferred     Stock After
     Name                    Offering (1)       Hereby (2)        Number        Percentage       Stock        Offering
     ----                    ------------       --------          ------        ----------     ----------    -----------
<S>                           <C>               <C>                 <C>             <C>       <C>            <C>
Caroline T Somers             1,005,793         1,005,793           -0-             -0-             -0-            -0-

Higgins D. Bailey *&
Shirley A. Bailey             1,404,093         1,404,093           -0-             -0-         178,000(3)     178,000(3)

Chandler G. Brown               257,085           257,085           -0-             -0-             -0-            -0-

CapMac Eighty-Two
Limited Partnership             143,490           143,490           -0-             -0-             -0-            -0-

Milton D. McKenzie,
Trustee of the Milton
D. McKenzie
Revocable Trust               1,650,417(4)      1,650,417(4)        -0-             -0-             -0-            -0-

James E. Wynn*                  518,085           518,085           -0-             -0-       1,500,000      1,500,000

CKC Partners                     78,300            78,300           -0-             -0-             -0-            -0-

Danny & Nancy Yu                 10,000            10,000           -0-             -0-             -0-            -0-
</TABLE>

                                      -37-
<PAGE>
<TABLE>
<CAPTION>
                                                                   Shares of Common Stock
                                                                    Owned After Offering
                                Shares          Shares of          -----------------------                    Shares of
                               of Common         Common                                        Shares of      Series A
                              Stock Owned        Stock                                         Series A       Preferred
                               Prior to          Offered                                       Preferred     Stock After
     Name                    Offering (1)       Hereby (2)        Number        Percentage       Stock        Offering
     ----                    ------------       --------          ------        ----------     ----------    -----------
<S>                           <C>               <C>                 <C>             <C>       <C>            <C>
Brent & Marlene
Jackson                          50,000            50,000           -0-             -0-             -0-            -0-

William L. Currin                10,000            10,000           -0-             -0-             -0-            -0-

Jacquelyn D.
Anderson Baker                    5,454             5,454           -0-             -0-             -0-            -0-

Interstate Johnson

Lane Corporation                 10,000            10,000           -0-             -0-             -0-            -0-

Dennis K. Metzler                 5,000             5,000           -0-             -0-             -0-            -0-

Jerry L. and Nancy
Sands                             1,000             1,000           -0-             -0-             -0-            -0-

The Macy Family
Trust                            10,000            10,000           -0-             -0-             -0-            -0-

Dewey H.*  &
Virginia Crim                    20,000            20,000           -0-             -0-             -0-            -0-

James W. Toot                     7,500             7,500           -0-             -0-             -0-            -0-

Gladys F. Decker &
Deloras D. Hunter,
Trustees of the Gladys
F. Decker Trust No. 1            20,000            20,000           -0-             -0-             -0-            -0-

Donald Hunter*                  140,000(5)        140,000(5)        -0-             -0-             -0-            -0-

Deloras Decker
Hunter, Trustee of the
Deloras Decker
Hunter Generation
Skipping Trust                   10,000            10,000           -0-             -0-             -0-            -0-

Suzanne Oliphant                 10,000            10,000           -0-             -0-             -0-            -0-

Albert W. White                  10,000            10,000           -0-             -0-             -0-            -0-

Stephen H. West                  20,000            20,000           -0-             -0-             -0-            -0-

C. Richard Harrison              10,000            10,000           -0-             -0-             -0-            -0-

Jeanette Y. Mihaly               20,000            20,000           -0-             -0-             -0-            -0-

Joy Ann Svenson                  10,000            10,000           -0-             -0-             -0-            -0-
</TABLE>

                                      -38-


<PAGE>
<TABLE>
<CAPTION>
                                                                   Shares of Common Stock
                                                                    Owned After Offering
                                Shares          Shares of          -----------------------                    Shares of
                               of Common         Common                                        Shares of      Series A
                              Stock Owned        Stock                                         Series A       Preferred
                               Prior to          Offered                                       Preferred     Stock After
     Name                    Offering (1)       Hereby (2)        Number        Percentage       Stock        Offering
     ----                    ------------       --------          ------        ----------     ----------    -----------
<S>                           <C>               <C>                 <C>             <C>       <C>            <C>
Richard L. Monfort              180,000           180,000           -0-             -0-             -0-            -0-

David T. Treadwell               10,000            10,000           -0-             -0-             -0-            -0-

David Bressler                    5,000             5,000           -0-             -0-             -0-            -0-

Gerald Olesh                     10,000            10,000           -0-             -0-             -0-            -0-

Arthur Kassoff                   10,000            10,000           -0-             -0-             -0-            -0-

Armond A. Azharian                5,000             5,000           -0-             -0-             -0-            -0-

The Underwood
Family Partners                 120,002(6)        120,002(6)        -0-             -0-             -0-            -0-

Steven C. & Lynn T.
Quoy                            120,000(7)        120,000(7)        -0-             -0-             -0-            -0-

Thomas T. Anderson
Trust                         1,404,093(8)      1,404,093(8)        -0-             -0-         710,041(9)     710,041(9)

Gross Ventures, Inc.                                                -0-             -0-             -0-            -0-
Profit Sharing Trust             20,000            20,000

B. A. Bates                      20,000            20,000           -0-             -0-             -0-            -0-

David M. Chapman                 10,000            10,000           -0-             -0-             -0-            -0-

Samuel Trussell                  10,000            10,000           -0-             -0-             -0-            -0-

Xavier Equihua                    1,000             1,000           -0-             -0-             -0-            -0-

Samantha Landy IRA                7,272             7,272           -0-             -0-             -0-            -0-

Karen Campbell,
Custodian for Lauren
and Abigail Campbell              2,000             2,000           -0-             -0-             -0-            -0-

Watson Corporation                4,000             4,000           -0-             -0-             -0-            -0-

Watson Development
Corporation                       1,000             1,000           -0-             -0-             -0-            -0-

Kenneth P. Carter,
Custodian for Taylor
and Sydney Carter                 2,000             2,000           -0-             -0-             -0-            -0-

Douglas F.and Dena
K. Carter                        12,000(10)        12,000(10)       -0-             -0-             -0-            -0-
</TABLE>

                                      -39-
<PAGE>
<TABLE>
<CAPTION>
                                                                   Shares of Common Stock
                                                                    Owned After Offering
                                Shares          Shares of          -----------------------                    Shares of
                               of Common         Common                                        Shares of      Series A
                              Stock Owned        Stock                                         Series A       Preferred
                               Prior to          Offered                                       Preferred     Stock After
     Name                    Offering (1)       Hereby (2)        Number        Percentage       Stock        Offering
     ----                    ------------       --------          ------        ----------     ----------    -----------
<S>                           <C>               <C>                 <C>             <C>       <C>            <C>
Michael A. Oliver                 3,000             3,000           -0-             -0-             -0-            -0-

A. Thomas
Tenenbaum**                      39,500            20,000          19,500           -0-             -0-            -0-

David Callaham                   10,000            10,000           -0-             -0-             -0-            -0-

Max Gould                        44,545            44,545           -0-             -0-             -0-            -0-

John R. Bridges, Jr.             10,000            10,000           -0-             -0-             -0-            -0-
</TABLE>
- --------------

*         Denotes a director and/or officer-employee of the Company.
**        Denotes a person previously employed by, or a director of, the Company
          during the past three years.
(1)       Beneficial ownership is calculated in accordance with Rule 13d-3(d) of
          the Securities Exchange Act of 1934, as amended.  Under Rule 13d-3(d),
          shares not outstanding that are subject to options,  warrants,  rights
          or  conversion  privileges  exercisable  within  60  days  are  deemed
          outstanding  for the purpose of calculating  the number and percentage
          owned by such person of the class, but not deemed  outstanding for the
          purposes of calculating the percentage owned of the class by any other
          person.
(2)       The number of Shares  offered hereby  consists of  outstanding  Shares
          held and offered for the account of the Selling Shareholders.
(3)       The Preferred Shares are held of record by Higgins D. Bailey.
(4)       Including  1,404,093 shares held in the name of Higgins D. Bailey,  as
          pledgee in connection  with a loan made by Higgins D. Bailey to Thomas
          T. Anderson which is collateralized by the shares,  and over which Mr.
          McKenzie  has sole voting  power as a result of an  irrevocable  proxy
          granted to Mr. KcKenzie by Mr. Anderson in connection with a loan made
          by Mr.  McKenzie to Mr. Anderson which is  collateralized  by the same
          shares. In addition,  includes 143,490 Shares held of record by CapMac
          Eighty-two,  a limited  partnership of which Mr. McKenzie is a general
          partner.
(5)       Includes  20,000 Shares held of record by the Donald Hunter  Residuary
          Marital  Trust as to which Mr.  Hunter  has  beneficial  ownership  as
          trustee.  In addition,  the Shares include  options to purchase 60,000
          Shares Does not include Shares held by record by spouse.
(6)       Includes 60,001 Shares underlying options
(7)       Includes 60,000 Shares underlying options
(8)       Held of record by Higgins D. Bailey as security for a loan made by Mr.
          Bailey to Mr. Anderson.  Milton D. McKenzie has sole voting power with
          respect to these shares.
(9)       Held of record by David M. Chapman and Samuel F.  Trussell as security
          for deferred compensation owed to Messrs.  Chapman and Trussell by Mr.
          Anderson.
(10)      Includes  4,000 Shares held of record by Douglas F. Carter,  Custodian
          for  MacKenzie  L.  Carter  as to  which  Mr.  Carter  has  beneficial
          ownership as custodian.

                              PLAN OF DISTRIBUTION

         The Selling  Shareholders  have  advised the Company  that prior to the
date of this Prospectus  they have not made any agreements or arrangements  with
any  underwriters,  brokers or dealers  regarding the resale of the Shares.  The
Company has been advised by the Selling  Shareholders that the Shares may at any


                                      -40-

<PAGE>

time or from time to time be offered  for sale  either  directly  by the Selling
Shareholders or by their transferees or other successors in interest. Such sales
may  be  made  in  the  over-the-counter   market  or  in  privately  negotiated
transactions.

         The  Selling  Shareholders  have  exercised  their right to require the
Company to register the Shares which the Selling Shareholders  acquired from the
Company  in  connection  with a merger  by the  Company  and  Entropin,  Inc,  a
California  corporation effective January 15, 1998 ("the Merger Agreement").  In
connection  with the Merger  Agreement,  the Selling  Shareholders  were granted
certain registration rights pursuant to which the Company has agreed to maintain
a current  registration  statement  to permit  public  sales of the Shares for a
period of at least nine  months  from the date of this  Prospectus  or until the
Shares have been sold,  whichever first occurs.  The Company will pay all of the
expenses  incident to the  offering  and sale of the Shares to the public by the
Selling  Shareholders  other than  commissions  and  discounts of  underwriters,
dealers or agents,  if any. Expenses to be paid by the Company include legal and
accounting fees in connection with the preparation of the Registration Statement
of  which  this  Prospectus  is a  part,  legal  fees  in  connection  with  the
qualification  of the  sale of the  Shares  under  the laws of  certain  states,
registration and filing fees, printing expenses, and other expenses. The Company
will  not  receive  any  proceeds  from the sale of the  Shares  by the  Selling
Shareholders.

         The Company anticipates that the Selling Shareholders from time to time
will offer the Shares  through:  (i) dealers or agents or in ordinary  brokerage
transactions;  (ii) direct  sales to  purchasers  or sales  effected  through an
agent;  (iii) privately  negotiated  transactions;  or, (iv) combinations of any
such methods.  The Shares would be sold at market prices  prevailing at the time
of sale or at negotiated  prices.  Dealers and brokers involved in the offer and
sale of the  Shares  may  receive  compensation  in the  form of  discounts  and
commissions.  Such  compensation,  which may be in excess of ordinary  brokerage
commissions,  may be paid by the Selling  Shareholders  and/or the purchasers of
Shares  for whom such  underwriters,  dealers  or agents  may act.  The  Selling
Shareholders and any dealers or agents which  participate in the distribution of
the Shares may be deemed to be  "underwriters"  as defined in the Securities Act
of 1933,  as amended  (the "1933  Act") and any profit on the sale of the Shares
and any discounts,  commissions or concessions received by any dealers or agents
might be deemed by the NASD to constitute underwriting compensation.

         If the  Company  is  notified  by the  Selling  Shareholders  that  any
material  arrangement  has been entered into with an underwriter for the sale of
Shares,  a  supplemental  prospectus  will  be  filed  to  disclose  such of the
following information as the Company believes  appropriate:  (i) the name of the
participating  underwriter;  (ii) the number of Shares involved; (iii) the price
at which  such  Shares  are sold;  (iv) the  commissions  paid or  discounts  or
concessions  allowed to such  underwriter;  and, (v) other facts material to the
transaction.

         Sales of Shares in the  over-the-counter  market may be by means of one
or more of the  following:  (i) a block  trade in which a broker or dealer  will
attempt to sell the Shares as agent but may position and resell a portion of the
block as principal to facilitate the transaction;  (ii) purchases by a dealer as
principal and resale by such dealer for its account pursuant to this Prospectus;
and, (iii) ordinary brokerage  transactions and transactions in which the broker

                                      -41-

<PAGE>

solicits  purchasers.  In  effecting  sales,  brokers or dealers  engaged by the
Selling Shareholders may arrange for other brokers or dealers to participate.

         The Company is unable to predict  the effect  which sales of the Shares
by the Selling  Shareholders  might have upon the market price of the  Company's
Common Stock or the Company's ability to raise further capital.

                                  LEGAL MATTERS

         Legal matters in connection  with the Shares being offered  hereby have
been passed on for the Company by the law firm of Brenman  Bromberg & Tenenbaum,
P.C.,  Denver,  Colorado.  Members of the firm of Brenman  Bromberg & Tenenbaum,
P.C. own 52,000 shares of the Company's Common Stock.

                                     EXPERTS

          The  statements  of operations  data for the years ended  December 31,
1997 and 1996,  and for the period from August 27, 1984  (inception) to December
31, 1997,  included in this  Prospectus  and  Registration  Statement  have been
audited by Causey  Demgen & Moore Inc.,  independent  auditors,  as set forth in
their report thereon appearing  elsewhere  herein,  and are included in reliance
upon such report given upon the  authority of such firm as experts in accounting
and auditing.



                                      -42-

<PAGE>

                         SHARES ELIGIBLE FOR FUTURE SALE

         The Company presently has outstanding 6,000,051 shares of Common Stock.

         All of the Shares  registered  hereunder can be resold pursuant to this
Prospectus.  In the event the Shares are not sold  under  this  Prospectus,  the
Shares  remain  "restricted  securities"  as that  term is  defined  in Rule 144
promulgated  under the Securities Act. In general,  under Rule 144, as currently
in effect,  any person  (or  persons  whose  shares are  aggregated),  including
persons deemed to be affiliates,  whose  restricted  securities  have been fully
paid for and held for at least one year  from the  later of the date of  payment
therefor to the Company or acquisition thereof from an affiliate,  may sell such
securities in brokers' transactions or directly to market makers,  provided that
the number of shares sold in any three  month  period may not exceed the greater
of 1% of the then outstanding  Common Stock or the average weekly trading volume
of the Common Stock during the four calendar weeks  preceding  such sale.  Sales
under  Rule  144  are  also  subject  to  certain  notice  requirements  and the
availability of current public  information  about the Company.  After two years
have  elapsed  from the later of the issuance of  restricted  securities  by the
Company or their  acquisition  from an affiliate,  such  securities  may be sold
without limitation by persons who are not affiliates under Rule 144.

         Sales of  substantial  amounts of Common Stock by  shareholders  of the
Company under Rule 144 or otherwise,  or even the potential for such sales,  are
likely to have a  depressive  effect on the market price of the shares of Common
Stock and  Warrants  and could  impair the  Company's  ability to raise  capital
through the sale of its equity securities. See RISK FACTORS.

                             ADDITIONAL INFORMATION

         The Company has filed a Registration Statement under the Securities Act
of 1933,  as amended  with  respect to the  securities  offered  hereby with the
United States  Securities  and Exchange  Commission  ("SEC"),  450 Fifth Street,
N.W.,  Washington,  D.C.  20549.  This  Prospectus,  which  is  a  part  of  the
Registration Statement, does not contain all of the information contained in the
Registration Statement and the exhibits and schedules thereto,  certain items of
which are omitted in accordance  with the rules and  regulations of the SEC. For
further  information  with  respect to the  Company and the  securities  offered
hereby, reference is made to the Registration Statement,  including all exhibits
and  schedules  therein,  which may be  examined at the SEC's  Washington,  D.C.
office, 450 Fifth Street, N.W., Washington, D.C. 20549 without charge, or copies
of which may be obtained from the SEC upon request and payment of the prescribed
fee.  Statements  made in this  Prospectus  as to the contents of any  contract,
agreement  or  document  are not  necessarily  complete,  and in  each  instance
reference  is made to the copy of such  contract,  agreement  or other  document
filed as an exhibit to the  Registration  Statement,  and each such statement is
qualified in its entirety by such reference.  The Company is a reporting company
under  the  Securities  Exchange  Act of 1934,  as  amended,  and in  accordance
therewith  in the future will file reports and other  information  with the SEC.
All of such reports and other  information  may be  inspected  and copied at the
public reference facilities maintained by the SEC at the address set forth above
in  Washington,  D.C.  and at  regional  offices of the SEC  located at 500 West

                                      -43-

<PAGE>

Madison Street,  Suite 1400,  Chicago,  Illinois 60661 and 7 World Trade Center,
Suite  1300,  New York,  New York 10048.  In  addition,  the Company  intends to
provide  its  shareholders  with annual  reports,  including  audited  financial
statements,  unaudited interim reports and such other reports as the Company may
determine necessary.  The SEC maintains a Web site that contains reports,  proxy
and information  statements and other  information  regarding  issuers that file
electronically with the SEC at http://www.secgov.

                                    GLOSSARY

"ESTEROM(R)"  means the product  employed in  Entropin's  Phase II studies which
contains benzoylecgonine, ecgonine, ecgonidine and their 2-hydroxypropyl esters.

"ESTEROM   RELATED   COMPOUNDS"   means  the   compounds  of  formulas  and  the
pharmaceutical  compositions  containing those compounds,  or mixtures  thereof,
identified and/or claimed under Entropin's Licensed Patents.

"DEA" means the Drug Enforcement Administration.

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

"IND" means an Investigational New Drug application filed with the FDA.

"NDA" means a New Drug Application filed with the FDA.

"RANGE OF  MOTION"  for a  shoulder  may be  defined as the number of degrees to
which  the  patient  may move the arm from the side in a  forward,  backward  or
upward direction.

"GMP" means Good Manufacturing  Practices which are regulations  enforced by the
FDA through its facilities inspection program.



                                      -44-

<PAGE>
                         INDEX TO FINANCIAL STATEMENTS

                                 ENTROPIN, INC.

                                                                          Page
                                                                          ----

Report of Causey Demgen & Moore Inc. Independent
  Certified Public Accountants..........................................  F-2

Balance Sheet - December 31, 1996 and 1997..............................  F-3

Statements of Operations - For Years Ended
  December 31, 1996 and 1997, and for the Period from
  August 27, 1984 (Inception) to December 31, 1997......................  F-4

Statement of Changes in Stockholders' Equity (Deficit)
  For the Period from August 27, 1984 (Inception) to
  December 31, 1997.....................................................  F-5

Statement of Cash Flows For Years Ended December 31, 1996
  and 1997, and for the Period from August 27, 1984 (Inception)
  to December 31, 1997..................................................  F-6

Notes to Financial Statements - December 31, 1996 and 1997..............  F-8

Unaudited Pro Forma Information.........................................  F-17

Unaudited Pro Forma Combined Balance Sheet - December 31, 1997..........  F-18

Unaudited Pro Forma combined Statement of Stockholders'
  Equity (Deficit)......................................................  F-19

Notes to Unaudited Pro Forma Combined Financial Statements..............  F-20

                                      F-1
<PAGE>

               REPORT OF INDEPENDENT CERTIFIED PUBLIC ACCOUNTANTS



The Board of Directors and Stockholders
Entropin, Inc.


We have audited the accompanying balance sheet of Entropin,  Inc. (a development
stage company) as of December 31, 1996 and 1997,  and the related  statements of
operations,  changes in  stockholders'  equity  (deficit) and cash flows for the
years then ended and for the period  from August 27,  1984  (inception)  through
December 31, 1997.  These  financial  statements are the  responsibility  of the
Company's  management.  Our  responsibility  is to  express  an opinion on these
financial statements based on our audits.

We  conducted  our  audits  in  accordance  with  generally   accepted  auditing
standards. Those standards require that we plan and perform the audits to obtain
reasonable assurance about whether the financial statements are free of material
misstatement.  An audit includes examining, on a test basis, evidence supporting
the amounts and disclosures in the financial statements.  An audit also includes
assessing the  accounting  principles  used and  significant  estimates  made by
management,  as well as evaluating the overall financial statement presentation.
We believe that our audits provide a reasonable basis for our opinion.

In our opinion,  the financial  statements  referred to above present fairly, in
all material respects,  the financial position of Entropin,  Inc. as of December
31, 1996 and 1997 and the results of its  operations  and its cash flows for the
years then ended and for the period  from August 27,  1984  (inception)  through
December 31, 1997, in conformity with generally accepted accounting principles.

Denver,  Colorado  
February 22, 1998, except 
for Note 9, as to which the 
date is
March 19, 1998                            Causey Demgen & Moore Inc.


                                      F-2
<PAGE>
<TABLE>
<CAPTION>
                                 ENTROPIN, INC.
                         (A DEVELOPMENT STAGE COMPANY)

                                 BALANCE SHEET

                           December 31, 1996 and 1997

                                     ASSETS
                                     ------

                                                                   1996          1997
                                                                   ----          ----
<S>                                                           <C>           <C>
Current assets:
   Cash                                                          $ 1,677         $ 291
   Accounts receivable - stockholder (Note 2)                      5,000         5,000
                                                              ----------    ----------
     Total current assets                                          6,677         5,291

Deferred stock offering costs (Notes 4 and 8)                          -        10,746

Patent costs, less accumulated amortization of
   $22,300 (1996) and $40,300 (1997)                             218,326       266,456
                                                              ----------    ----------

                                                              $  225,003    $  282,493
                                                              ==========    ==========

                 LIABILITIES AND STOCKHOLDERS' EQUITY (DEFICIT)
                 ----------------------------------------------

Current liabilities:
   Accounts payable                                           $  148,557    $  329,813
   Advances - stockholders (Note 2)                               21,036        98,873
                                                              ----------    ----------
     Total current liabilities                                   169,593       428,686

Long-term debt:
   Stockholders (Note 2)                                       1,601,697     1,710,487
   Deferred royalty agreement (Note 6)                           111,440       155,495
   Compensation agreement (Note 6)                             1,430,000     1,500,000
                                                              -----------   ----------
     Total long-term debt                                      3,143,137     3,365,982

Commitments and contingencies (Notes 6 and 8)

Series  A  redeemable  preferred  stock,  
   $.001  par  value,   3,210,487  shares
   authorized, no shares issued
   and outstanding (Notes 3 and 8)                                     -             -

Stockholders' equity (deficit) (Notes 4 and 8):
   Preferred stock, $.001 par value; 10,000,000 shares
     authorized, Series A reported above (Note 3)                      -             -
   Common stock, $.001 par value; 50,000,000 shares
     authorized, 5,220,000 shares issued and outstanding           5,220         5,220
   Additional paid-in capital                                    369,780     1,043,780
   Deficit accumulated during the development stage           (3,462,727)   (4,561,175)
                                                              -----------   -----------
     Total stockholders' equity (deficit)                     (3,087,727)   (3,512,175)
                                                              -----------   -----------

                                                              $  225,003    $  282,493
                                                              ==========    ==========
</TABLE>

                            See accompanying notes.
                                      F-3
<PAGE>
<TABLE>
<CAPTION>
                                 ENTROPIN, INC.
                         (A DEVELOPMENT STAGE COMPANY)

                            STATEMENT OF OPERATIONS

           For the Years Ended December 31, 1996 and 1997 and for the
          Period from August 27, 1984 (inception) to December 31, 1997


                                                                           Cumulative
                                                                          amounts from
                                                 1996           1997       inception
                                                 ----           ----       ---------
<S>                                           <C>          <C>            <C>
Costs and expenses:
   Research and development (Note 4)          $ 167,818    $   683,209    $ 3,752,854
   General and administrative (Note 4)          101,894        269,853        511,255
   Depreciation and amortization                 10,550         18,000         57,368
   Interest (Note 2)                             94,876        127,386        239,698
                                              ---------    -----------    -----------

Net loss                                      $(375,138)   $(1,098,448)   $(4,561,175)
                                              =========    ===========    ===========

Basic loss per common share (Note 5)          $    (.07)   $      (.21)   $      (.87)
                                              =========    ===========    ===========
</TABLE>

                            See accompanying notes.
                                     F-4
<PAGE>
<TABLE>
<CAPTION>
                                 ENTROPIN, INC.
                         (A DEVELOPMENT STAGE COMPANY)

             STATEMENT OF CHANGES IN STOCKHOLDERS' EQUITY (DEFICIT

      For the Period from August 27, 1984 (inception) to December 31, 1997

                                                                                                                Deficit
                                                                                                              accumulated
                                                             Common Stock       Additional                    during the
                                                         --------------------    paid-in         Stock        development
                                                         Shares        Amount    capital     subscriptions       stage
                                                         ------        ------   ----------   -------------    -----------
<S>                                                    <C>           <C>        <C>           <C>             <C>
Balance at August 27, 1984 (inception)                         -      $    -    $        -    $      -        $         -

   Sale of common stock for cash
     in 1984 ($.005 per share)                           991,800         992         4,008           -                  -

   Issuance of common stock in exchange for
      services in 1991 ($.005 per share)               3,967,198       3,967        16,033           -                  -

   Cash contribution from shareholder in 1991                  -           -        50,000           -                  -

   Net loss for the period from inception through
     December 31, 1994                                         -           -             -           -         (2,824,221)
                                                       ---------      ------    ----------    --------        -----------

Balance, December 31, 1994                             4,958,998       4,959        70,041           -         (2,824,221)

   Cash received for common  stock subscription                -           -             -     150,000                  -

   Net loss for the year                                       -           -             -           -           (263,368)
                                                       ---------      ------    ----------    --------        -----------

Balance, December 31, 1995                             4,958,998       4,959        70,041     150,000         (3,087,589)

   Sale of common stock for cash ($1.15 per share)       261,002         261       299,739    (150,000)                 -

   Net loss for the year                                       -           -             -           -           (375,138)
                                                       ---------      ------    ----------    --------        -----------

Balance, December 31, 1996                             5,220,000       5,220       369,780           -         (3,462,727)

   Capital contributions (Note 4)                              -           -       674,000           -                  -

   Net loss for the year                                       -           -             -           -         (1,098,448)
                                                       ---------      ------    ----------    --------        -----------

Balance, December 31, 1997                             5,220,000      $5,220    $1,043,780    $      -        $(4,561,175)
                                                       =========      ======    ===========   ========        =========== 
</TABLE>

                            See accompanying notes.
                                      F-5 
<PAGE>
<TABLE>
<CAPTION>
                                 ENTROPIN, INC.
                         (A DEVELOPMENT STAGE COMPANY)

                             STATEMENT OF CASH FLOWS

           For the Years Ended December 31, 1996 and 1997 and for the
          Period from August 27, 1984 (inception) to December 31, 1997

                                                                       Cumulative
                                                                         amounts
                                                                          from
                                                 1996        1997       inception
                                                 ----        ----       ---------
<S>                                          <C>         <C>           <C>
Cash flows from operating activities:
   Net loss                                  $(375,138)  $(1,098,448)  $(4,561,175)
   Adjustments to reconcile net loss to net
     cash used in operating activities:
       Depreciation and amortization            10,550        18,000        57,368
       IBC partner royalty agreement                 -        44,055       155,495
       Services contributed in exchange
         for stock                                   -       674,000       694,000
       Services contributed in exchange for
         compensation agreements               110,000        70,000     2,231,678
       Increase in accounts receivable -
         shareholder                                 -             -        (5,000)
       Increase in accounts payable             33,418       181,256       329,813
       Increase in accrued interest             60,341       108,790       169,139
       Other                                         -             -           139
                                             ---------   -----------   -----------

       Total adjustments                       214,309     1,096,101     3,632,624
                                             ---------   -----------   -----------

       Net cash used in operations            (160,829)       (2,347)     (928,551)

Cash flows from investing activities:
   Purchase of equipment                             -             -       (17,207)
   Patent costs                                (54,564)      (66,130)     (306,756)
                                             ---------   -----------   ----------- 

       Net cash used in investing activities   (54,564)      (66,130)     (323,963)

Cash flows from financing activities:
   Deferred stock offering costs                     -       (10,746)      (10,746)
   Proceeds from sale of common stock          150,000             -       355,000
   Proceeds from stockholder loans              19,972             -       809,678
   Proceeds from stockholder advances           21,035        77,837        98,873
                                             ---------   -----------   -----------

       Net cash provided by financing
          activities                           191,007        67,091     1,252,805
                                             ---------   -----------   -----------

Net increase (decrease) in cash                (24,386)       (1,386)          291

Cash at beginning of period                     26,063         1,677             -
                                             ---------   -----------   -----------

Cash at end of period                        $   1,677   $       291   $       291
                                             =========   ===========   ===========
</TABLE>

                                (Continued on following page) 
                                   See accompanying notes.
                                             F-6             
<PAGE>
<TABLE>
<CAPTION>
                                 ENTROPIN, INC.
                          (A DEVELOPMENT STAGE COMPANY)

                             STATEMENT OF CASH FLOWS

                 For the years ended December 31, 1996 and 1997
    and for the period from August 27, 1984 (inception) to December 31, 1997



 
                         (Continued from preceding page)

Supplemental disclosure of cash flow information:

                                                                               Cumulative
                                                                                amounts
                                                                                 from
                                                 1996           1997            inception
                                                 ----           ----            ---------
<S>                                             <C>           <C>               <C>

Cash paid during period for interest            $6,372        $15,598           $59,855
</TABLE>


Supplemental disclosure of non-cash financing activities:

During 1996, the Company  entered into a compensation  agreement with the spouse
of a shareholder for $731,678 in exchange for services performed for the Company
in prior years (see Note 2).

Pursuant to an agreement with an IBC limited partner,  the Company has accrued a
liability  totaling  $155,495 at December 31, 1997 for advance  royalties due to
the individual (see Note 6).

In November of 1997,  the Company  reached an agreement  with an  individual  to
enter into a compensation  agreement in exchange for services the individual has
provided the Company since  inception  (see Note 6). The Company has reflected a
liability of $1,430,000 and $1,500,000 in 1996 and 1997,  respectively,  related
to this agreement.



                            See accompanying notes.
                                     F-7  
<PAGE>


                                 ENTROPIN, INC.
                         (A DEVELOPMENT STAGE COMPANY)
                         NOTES TO FINANCIAL STATEMENTS

                           December 31, 1996 and 1997

1.   Organization and summary of significant accounting policies
     -----------------------------------------------------------

     Organization:

     Entropin,  Inc.  was  incorporated  in  California  in  August  1984,  as a
     pharmaceutical research company developing Esterom(R),  a topically applied
     compound for the  treatment  of impaired  range of motion  associated  with
     acute  lower  back  sprain  and acute  painful  shoulder.  The  Company  is
     considered  to be a development  stage  enterprise as more fully defined in
     Statement No. 7 of the Financial  Accounting  Standards  Board.  Activities
     from inception  include  research and development  activities,  seeking the
     U.S. Food and Drug Administration (FDA) approval for Esterom(R), as well as
     fund raising.

     Basis of presentation and managements' plans:

     The Company's  financial  statements have been presented on a going concern
     basis which  contemplates the realization of assets and the satisfaction of
     liabilities  in the  normal  course  of  business.  The  Company  is in the
     development  stage  and  has  been  primarily   involved  in  research  and
     development  activities.  This has  resulted  in  significant  losses and a
     stockholders'  deficit at December 31, 1997 of  $4,561,175.  The  Company's
     continued  existence is  dependent on its ability to obtain the  additional
     funding  necessary to complete the FDA approval  process for Esterom(R) and
     market the product.

     As  described in Note 8, the Company has  successfully  completed a private
     placement  and  a  recapitalization  of  the  Company  which  will  provide
     additional  liquidity for the Company for current operations.  However, the
     Company  estimates it will require  additional  funding of up to $8,000,000
     over the  next  three  years  to  successfully  complete  the FDA  approval
     process. The financial statements do not include any adjustment relating to
     the  recoverability  and  classification  of recorded  asset amounts or the
     amount and classification of liabilities or other adjustments that might be
     necessary  should the Company be unable to  continue as a going  concern in
     its present form.

     Use of estimates:

     The  preparation  of financial  statements  in  conformity  with  generally
     accepted  accounting  principles  requires management to make estimates and
     assumptions  that affect the reported amounts of assets and liabilities and
     disclosure  of  contingent  assets  and  liabilities  at  the  date  of the
     financial  statements  and the  reported  amounts of revenues  and expenses
     during  the  reporting  period.  Actual  results  could  differ  from those
     estimates.

     Income Taxes:

     The  Company  has  elected  under the  Internal  Revenue  Code to be an 'S'
     corporation.  In lieu of corporation  income taxes,  the shareholders of an
     'S' corporation include their respective shares of the Company's net income
     or loss in their individual income tax returns.

                                       F-8     
<PAGE>
                                 ENTROPIN, INC.
                          (A DEVELOPMENT STAGE COMPANY)

                          NOTES TO FINANCIAL STATEMENTS

                           December 31, 1996 and 1997



1.   Organization and summary of significant accounting policies (continued)
     -----------------------------------------------------------------------

     Deferred stock offering costs:

     Deferred  stock  offering  costs  represent  costs incurred to December 31,
     1997, in connection with the private  placement of common stock, more fully
     discussed in Note 6. Costs  incurred as of December 31, 1997 and additional
     costs incurred  subsequent to that date,  were charged against the proceeds
     of the offering.

     Patents:

     Patents  are  stated  at  cost  less  accumulated   amortization  which  is
     calculated  on a  straight-line  basis over the useful lives of the assets,
     estimated by management to average 17 years. Research and development costs
     and any  costs  associated  with  internally  developed  patents  (with the
     exception  of  legal  costs)  are  expensed  in  the  year  incurred.   The
     recoverability  of carrying values of intangible  assets are evaluated on a
     recurring basis.

     Cash equivalents:

     For the purposes of the statement of cash flows, the Company  considers all
     highly liquid debt instruments purchased with a maturity of three months or
     less to be cash equivalents.

     Concentrations of credit risk:

     Financial   instruments   which   potentially   subject   the   Company  to
     concentrations  of credit risk  consist  principally  of cash.  The Company
     places its cash with high quality financial  institutions.  At times during
     the years,  the balance at any one  financial  institution  may exceed FDIC
     limits.

2.   Related party transactions
     --------------------------

     Office Space:

     The Company  presently uses part of an office  facility and  administrative
     services provided by a director and stockholder of the Company at no cost.

     Accounts receivable - stockholder:

     During 1994, the Company advanced $5,000 to a stockholder. The advance does
     not bear interest and is due on demand.  The Company expects the advance to
     be paid in full.

     Advances - stockholders:

     During 1996 and 1997, the Company was advanced an aggregate of $83,873 by a
     stockholder from the stockholder's personal line of credit. The Company has
     agreed to pay all interest  charges  incurred by the stockholder  resulting
     from the advances.



                                      F-9   
<PAGE>
                                 ENTROPIN, INC.
                          (A DEVELOPMENT STAGE COMPANY)

                          NOTES TO FINANCIAL STATEMENTS

                           December 31, 1996 and 1997



2.   Related party transactions (continued)
     --------------------------------------

     During 1997,  the Company  received  advances from a  stockholder  totaling
     $15,000. The advances do not bear interest and are payable upon demand.

     Long-term debt - stockholders:

     Long-term  debt -  stockholders  consisted of the following at December 31,
     1996 and 1997:

<TABLE>
<CAPTION>
                                                                   1996          1997
                                                                   ----          ----
   <S>                                                         <C>           <C>
   8%  Note payable - stockholder, issued for cash advances,
       principal plus accrued interest due December 31,
       2000, unsecured                                         $  631,678    $  631,678

   8%Note payable - stockholder, issued for cash advances,
       principal plus accrued interest due December 31,
       2000, unsecured                                            178,000       178,000

   8%Note payable - stockholder, issued for past services,
       principal plus accrued interest due December 31, 2000,
        unsecured                                                 731,678       731,678

     Accrued interest payable                                      60,341       169,131 
                                                               ----------    ----------

                                                               $1,601,697    $1,710,487 
                                                               ==========    ========== 
</TABLE>

     As  described  in Note 6,  effective  January  15,  1998,  all above  noted
     long-term debt plus accrued  interest was converted to 1,710,487  shares of
     the Company's redeemable 8% non-voting,  non-cumulative  Series A Preferred
     Stock at $1 per  share,  for a total of  $1,720,487  which  represents  the
     recorded amount of the liability at December 31, 1997.

3.   Redeemable preferred stock
     --------------------------

     In December  1997,  the Board of  Directors  approved an  amendment  to the
     Articles of Incorporation to authorize 10,000,000 shares of $.001 par value
     preferred  stock.  3,210,487  shares of the Company's  preferred stock were
     designated as redeemable, non-voting,  non-cumulative 8% Series A Preferred
     Stock (see Note 8). The annual 8%  dividend is based upon a $1.00 per share
     value.

     The Series A Preferred Stock will be subject to mandatory  redemption.  The
     funds available for redemption will be equal to more than 20% but less than
     50% of annual earnings,  as determined  annually by the Board of Directors,
     but not exceeding cash flow from operations and will  automatically  cancel
     in seven years if not fully redeemed.  The Company may  voluntarily  redeem
     outstanding shares of preferred stock at $1 per share.



                                      F-10 
<PAGE>

                                 ENTROPIN, INC.
                          (A DEVELOPMENT STAGE COMPANY)

                          NOTES TO FINANCIAL STATEMENTS

                           December 31, 1996 and 1997




4.   Stockholders' equity
     --------------------

     Buy-sell agreement:

     On August 11, 1993, the Company entered into a buy-sell  agreement with the
     existing stockholders which, among other provisions,  requires stockholders
     desiring  to sell or  transfer  shares to a person or entity  other than an
     immediate  family member to first submit a proposal of the sale or transfer
     and its terms to the  Company.  Pursuant to the  agreement,  the Company is
     entitled to a first right  option to purchase  some or all of the shares on
     the terms and price  offered to the buyer after  which,  subject to certain
     provisions,  all  other  individual  shareholders  may  then  purchase  any
     remaining shares not purchased by the Company.  The buy-sell  agreement was
     cancelled January 15, 1998.

     Authorized capital:

     Pursuant  to the  recapitalization  more  fully  described  in  Note  8, in
     December 1997, the Board of Directors approved an amendment to the Articles
     of  Incorporation  to increase  the  authorized  common  stock to 7,000,000
     shares and to establish its par value at $.001 per share.

     Stock split:

     On December 10,  1997,  the Board of  Directors  approved a  198.36-for-one
     stock split.  Accordingly,  all  references to common shares  including the
     number of shares (except shares authorized),  stock option data, additional
     paid-in capital, and per share information have been retroactively restated
     to reflect the stock  split,  which  presentation  is  consistent  with the
     recapitalization of the Company (see Note 8).

     Private placement:

     As of December 31, 1997,  the Company had commenced a private  placement of
     30 units  (10,000  shares of its $.001 par value  common stock per unit) at
     $27,500 per unit,  $2.75 per share,  which  closed on January 15, 1998 with
     gross proceeds of $825,000 (see Note 8).

     Capital contributions:

     In December 1997, certain shareholders of the Company contributed a portion
     of their  common stock to an  individual  providing  business  advisory and
     legal   services  to  the  Company   (78,300  shares  valued  at  $156,000,
     approximately  $2.00 per share) and to the  Chairman of the  Pharmaceutical
     Sciences  Department of a university as partial settlement for research and
     development  services  (259,042  shares  valued at $518,000,  approximately
     $2.00 per  share).  The  expense  and  related  capital  contributions  are
     reflected at December 31, 1997.



                                      F-11
<PAGE>

                                 ENTROPIN, INC.
                          (A DEVELOPMENT STAGE COMPANY)

                          NOTES TO FINANCIAL STATEMENTS

                           December 31, 1996 and 1997



5.   Basic net loss per share:
     ------------------------

     Basic net loss per share is based on the weighted  average number of shares
     outstanding during the periods, 5,220,000 shares. Shares issued for nominal
     consideration are considered outstanding since incepetion. Diluted loss per
     share has not been presented as exercise of the  outstanding  stock options
     would have an antidilutive effect.

6.   Commitments and contingencies
     -----------------------------

     Compensation agreements:

     In 1993,  the Company  entered into a 30 year  compensation  agreement with
     I.B.C.  limited  partners  owning  64.28% of the limited  partnership.  The
     I.B.C.  Limited  Partnership  participated  in  the  early  development  of
     Estrom(R)  (the  medicine) and owned the patent rights to three patents and
     all  intellectual  property rights.  Under the terms of the Agreement,  the
     Company  acquired  all of the patent and  intellectual  property  rights in
     exchange  for  certain  compensation  to the  limited  partners,  which  is
     dependent upon the Company's receipt of a marketing partners  technological
     access  fee  and  royalty   payments.   The  partnership  was  subsequently
     dissolved.  Compensation  under the  agreement  includes a bonus payment of
     $96,420 to be paid at the time the Company is  reimbursed by a drug company
     for past expenses paid for  development of the medicine,  as well as 64.28%
     of a decreasing  payment  rate (3% to 1%) on  cumulative  annual  royalties
     received by the Company.  As of December 31, 1996 and 1997, no  liabilities
     have been accrued with respect to this agreement.

     In a separate agreement with a former I.B.C.  limited partner,  the Company
     has agreed to pay the partner 35.72% of a decreasing  earned payment (3% to
     1% on cumulative annual sales of products by the Company) until October 10,
     2004.  From October 10, 2004 until  October 10, 2014,  the Company will pay
     the partner 17.86% of the earned payment. In accordance with the agreement,
     the  Company  has agreed to pay the former  limited  partner  the amount of
     $40,000  and a minimum  earned  payment  of  $3,572  per  calendar  quarter
     beginning  on December  31,  1989.  Such  minimum  earned  payment is to be
     evidenced  by a  promissory  note issued each  quarter and payable when the
     Company is either  reimbursed for expenses paid for the  development of the
     medicine or from the first income  received from the Company from net sales
     of the  medicine.  The  quarterly  payments  are to be applied  against the
     earned  payment to be received by the limited  partner.  As of December 31,
     1996, and 1997, the total liability  accrued with respect to this agreement
     totaled $111,440 and $155,495, respectively.

     Consulting Agreement:

     On March 12, 1996, the Company  entered into a Consulting  Agreement with a
     firm  whereby  the  Company  has to pay  the  firm a  $50,000  success  fee
     concurrent  with the  Company's  signing of any  agreement  establishing  a
     corporate  partnership, product license, or any other agreement relating to



                                      F-12
<PAGE>

                                 ENTROPIN, INC.
                          (A DEVELOPMENT STAGE COMPANY)

                          NOTES TO FINANCIAL STATEMENTS

                           December 31, 1996 and 1997



6.   Commitments and contingencies (continued)
     -----------------------------------------

     the  marketing  of the  medicine.  As of December  31,  1997,  a payable of
     $25,000 has been recorded with respect to this agreement.

     Development of New Products Agreement:

     On January 26, 1987, the Company entered into a Development of New Products
     Agreement  with  a  university  whereby  the  university  provides  various
     services  including  research and development,  product  formulations,  and
     clinical supply for the Company relating to its development of the medicine
     on a project by project basis.  Prior to the  commencement of each project,
     the Company and the university will mutually agree on the nature, type, and
     timing of each special  project as well as the terms of compensation to the
     university.  Under the agreement, the university is required to disclose to
     the Company all inventions,  discoveries, or improvements conceived or made
     by the  university  and has  agreed  to  assign  all its  interests  to the
     Company.

     Compensation Agreement:

     During  November  1997,  the Company began  negotiating  with an individual
     regarding compensation for research and development services provided since
     the inception of the Company.  In exchange for these services,  the Company
     agreed  to issue an 8% note  payable  to the  individual  in the  principal
     amount of $1,500,000  maturing  December 31, 2000.  The Company has accrued
     related  costs of  $1,430,000  as of December 31, 1996,  and  increased the
     liability to  $1,500,000  as of December 31, 1997.  Subsequent to year end,
     the  Company   converted  this  obligation  to  1,500,000   shares  of  its
     non-voting,  non-cumulative redeemable 8% Series "A" preferred stock, at $1
     per share (see Note 8). In  addition,  effective  December  15,  1997 three
     stockholders  of the Company  agreed to transfer a portion of their  common
     stock to provide the individual  with  approximately  5% of the outstanding
     common shares (see Note 4).

     Development and Supply Agreement:

     On January 1, 1997, the Company entered into 10 year Development and Supply
     Agreements  with  Mallinckrodt,  Inc.  to  develop  all of  the  chemistry,
     manufacturing  and controls to comply with the drug master file of the Food
     and Drug  Administration  as well as supply  the bulk  active  product  for
     marketing.  In  exchange  for these  services,  Mallinckrodt  will  receive
     exclusive rights as a supplier of the bulk active product to the Company in
     North  America.  For the first year ended  December 31, 1997,  the contract
     price of the ingredient will be fixed based on the number of liters ordered
     by the Company. Subsequent to December 31, 1997, the cost per liter will be
     adjusted based on changes in the price of the components in the bulk active
     product.

     In  addition,   pursuant  to  the   agreement,   the  Company  has  granted
     Mallinckrodt a right of first refusal to supply the Company's  requirements
     of the bulk active product in all other parts of the world outside of North
     America.




                                      F-13
<PAGE>

                                 ENTROPIN, INC.
                          (A DEVELOPMENT STAGE COMPANY)

                          NOTES TO FINANCIAL STATEMENTS

                           December 31, 1996 and 1997



6.   Commitments and contingencies (continued)
     -----------------------------------------

     Management advisory services agreement:

     On October 28, 1997,  the Company  entered into a 3-year  agreement with an
     organization  providing  management  advisory services to the Company.  The
     organization provides assistance in developing and implementing a strategic
     plan of merger or  acquisition  and for  business and  financial  community
     relations.  Simultaneous  with the  closing  of any  merger or  acquisition
     arranged by the organization  and on terms  acceptable to the Company,  the
     organization  will  receive  two options to acquire  180,001  shares of the
     Company's  common stock for $100 and $504,000,  respectively  (see Note 8).
     The options  are  exercisable  for a five-year  period.  In  addition,  the
     organization  received  registration  rights for the shares  underlying the
     options.

7.   Financial instruments
     ---------------------

     The  carrying  values of cash,  accounts  receivable-shareholder,  accounts
     payable  and  advances-shareholders  approximated  fair  value  due  to the
     short-term maturities of these instruments.

     The Company  believes  that it is not  practical  to estimate a fair market
     value different from the carrying value of long-term debt.  Long-term debt,
     excluding the deferred  royalty  agreement,  was converted into  redeemable
     preferred  stock on January 15, 1998.  Both the redeemable  preferred stock
     and the deferred royalty  agreement have numerous  features unique to these
     securities and agreements as described in Notes 3 and 6.

8.   Subsequent events
     -----------------

     Recapitalization:

     On December 9, 1997,  the Company  entered  into an  agreement  and plan of
     merger with Vanden  Capital  Group,  Inc.  (Vanden) to exchange  all of the
     issued and  outstanding  common  shares of the  Company,  in  exchange  for
     5,220,000 shares of Vanden's $.001 par value common stock.

     Pursuant to the  agreement,  Vanden  agreed to have cash of $220,000 and no
     unpaid  liabilities at the effective date of the transaction.  The exchange
     was  consummated  on January  15,  1998.  As a condition  precedent  to the
     exchange,  the  Company  successfully  raised  gross  proceeds  of $825,000
     through a private placement of its common stock (see Note 3).

     Following the exchange, the Company's shareholders own approximately 95% of
     the outstanding  common stock of Vanden. The acquisition has been accounted
     for as a  recapitalization  of the  Company  based  upon  historical  cost.
     Accordingly,  the number authorized and issued common shares,  par value of
     common  stock and  additional  paid-in  capital  have been  restated on the
     balance sheet and the statement of stockholders' equity to give retroactive
     effect to the recapitalization.




                                      F-14
<PAGE>
                                 ENTROPIN, INC.
                          (A DEVELOPMENT STAGE COMPANY)

                          NOTES TO FINANCIAL STATEMENTS

                           December 31, 1996 and 1997



8.   Subsequent events
     -----------------

     Issuance of preferred stock:

     On January 15, 1998,  the Company issued  3,210,487  shares of its Series A
     redeemable non-voting, non-cumulative 8% preferred stock in exchange for an
     aggregate $1,710,487 of notes payable to shareholders and accrued interest,
     and the $1,500,000 compensation agreement (see Notes 2 and 6).

     Issuance of common stock:

     In connection with the  recapitalization  effected on January 15, 1998, the
     Company  issued  180,001  shares of its $.001 par value  common stock to an
     unrelated  entity for cash of $100 as required by the  management  advisory
     services contract (see Note 6).

     License agreement:

     In January 1998,  the Company  entered into an agreement with a director of
     the Company, whereby the Company granted the director a non-exclusive right
     to make,  import  and use the  Company's  product,  Esterom(R),  under  the
     Company's   licensed   patents  and  to  use  the  Company's   confidential
     information   to  develop  new  products   that  contain  the  same  active
     ingredients as Esterom(R),  but are formulated  differently.  All rights to
     the improved products will remain the exclusive property of the Company and
     the  director  will  receive a two percent  royalty on the net sales of all
     improved products, and a negotiated royalty on new products. The expiration
     date of this agreement is January 1, 2003.

     Change in tax status:

     The  consummation  of the stock  exchange  with Vanden and the  issuance of
     preferred stock in January 1998,  resulted in a change in the Company's tax
     status from an S corporation  to a taxable  corporation.  The effect of the
     change  would be to provide for income tax based upon  reported  results of
     operations, and to provide deferred tax assets and liabilities on temporary
     differences between reported earnings and taxable income. Since the Company
     has had losses  since  inception,  no change in the  results of  operations
     would  have  occurred,  assuming  the  change  in  status  occurred  at the
     beginning of the periods presented.

     Unaudited pro forma combined balance sheet:

     The following table presents the unaudited pro forma combined balance sheet
     of the  Company  and  Vanden as though  the  combination  had  occurred  on
     December  31,  1997,  giving  effect to the  recapitalization,  the private
     placement and the other subsequent events described above.



                                      F-15
<PAGE>

                                 ENTROPIN, INC.
                          (A DEVELOPMENT STAGE COMPANY)

                          NOTES TO FINANCIAL STATEMENTS

                           December 31, 1996 and 1997


8.   Subsequent events (continued)
     -----------------------------

Assets:
    Current assets                            $1,034,247
    Other assets
                                                 266,456
                                              ----------
                                              $1,300,703
                                              ==========

Liabilities and stockholders' equity: 
    Current liabilities                       $  428,686
    Other liabilities                            155,495
    Redeemable preferred stock                 3,210,487
    Stockholders' equity (deficit)            (2,493,965)
                                              ---------- 
                                              $1,300,703
                                              ==========


9.   Proposed management agreement
     -----------------------------

     During March 1998,  the Company has been  negotiating  an agreement  with a
     company  experienced  in managing  pharmaceutical  development  , including
     providing  assistance  in  taking  pharmaceutical  products  to the FDA and
     through the clinical trials and New Drug Application stages of development.
     The  agreement is proposed to have a 33 month term, at the end of which the
     Company's primary product,  Esterom(R),  may be approved for marketing. The
     Company would be required to pay management fees of approximately  $900,000
     over  the term of the  agreement,  as well as grant  stock  options  to the
     company  within  thirty days after  execution of the  agreement to purchase
     450,000  shares of Entropin  common stock.  The options will have a term of
     five years from the grant date and an exercise price of $1.50.  The options
     will be exercisable in varying amounts on dates ranging from August 1998 to
     December 2000.








                                           F-16
<PAGE>

                         UNAUDITED PRO FORMA INFORMATION
                         -------------------------------



On December  9, 1997,  Vanden  Capital  Group,  Inc.  (Vanden)  entered  into an
agreement and plan of merger to acquire all of the issued and outstanding shares
of Entropin Inc. (Entropin) in exchange for 5,220,000 shares of Vanden $.001 par
value common stock and $220,000 in cash.

After  the  exchange   Entropin   shareholders  own  approximately  95%  of  the
outstanding  common stock of the surviving  company.  The Entropin  shareholders
have appointed a new Board of Directors who have in turn elected new officers.

Entropin is a pharmaceutical  research company developing Estrom(R), a topically
applied  compound for the treatment of impaired range of motion  associated with
acute lower back sprain and acute painful shoulder.

The following unaudited pro forma combined balance sheet and unaudited pro forma
combined  statement  of  stockholders'  equity  (deficit)  assume  the  exchange
occurred on December 31, 1997 and combines the financial  positions of Vanden as
of  November  30,  1997,  and  Entropin  as of  December  31,  1997,  using  the
assumptions   described  in  the  accompanying  notes.  Since  Entropin  is  the
predominant  entity,  this combination is accounted for as a recapitalization of
Entropin.

The  unaudited  pro forma  results  of the  combined  operations  of Vanden  and
Entropin  are not  presented  because  the  combination  is  accounted  for as a
recapitalization at historical cost, not a business combination.

Vanden received shareholder approval to effect the recapitalization and to amend
its  Articles  of  Incorporation  to  change  Vanden's  name to  Entropin  Inc.,
effective January 15, 1998.

                                      F-17
<PAGE>
<TABLE>
<CAPTION>

                   UNAUDITED PRO FORMA COMBINED BALANCE SHEET

                               December 31, 1997

                                       "Vanden"      "Entropin"          Pro forma     Pro forma
                                       Historical    Historical          Adjustments   Combined
                                       ----------    ----------          -----------   --------

                                                 ASSETS
                                                 ------
<S>                                    <C>          <C>                  <C>           <C>
Current assets:
   Cash                                $307,301     $      291  (D)      $  808,856
                                                                (A)         (87,201)   $1,029,247
   Accounts receivable                        -          5,000                    -         5,000
                                       --------     ----------           ----------    ----------

     Total current assets               307,301          5,291              721,655     1,034,247

Deferred offering costs                       -         10,746  (D)         (10,746)            -

Patent costs, net of
     amortization                             -        266,456                    -       266,456
                                       --------     ----------           ----------    ----------

                                       $307,301     $  282,493           $  710,909    $1,300,703
                                       ========     ==========           ==========    ==========

                            LIABILITIES AND STOCKHOLDERS' EQUITY (DEFICIT)
                            ----------------------------------------------
Current liabilites:
   Accounts payable                    $ 12,643     $  329,813  (A)      $  (12,643)   $  329,813
   Advances-stockholders                      -         98,873                    -        98,873
                                       --------     ----------           ----------    ----------

     Total current liabilites            12,643        428,686              (12,643)      428,686

Long-term debt:
   Stockholders                               -      1,710,487  (E)      (1,710,487)            -
   Deferred royalty agreement                 -        155,495                    -       155,495
   Compensation agreement                     -      1,500,000  (E)      (1,500,000)            -
                                       --------     ----------           -----------   ----------

     Total long-term debt                     -      3,365,982           (3,210,487)      155,495

Redeemable preferred stock                    -              -            3,210,487     3,210,487

Stockholders' equity (deficit):
   Preferred stock                            -              -                    -             -
   Common stock                           9,002          5,220               (8,222)        6,000

   Additional paid-in capital           687,469      1,043,780              329,961     2,061,210

   Deficit accumulated during
     the development stage             (401,813)    (4,561,175)             401,813    (4,561,175)
                                       --------     ----------           ----------    ---------- 
      Total stockholders'
         equity (deficit)               294,658     (3,512,175)             723,552    (2,493,965)
                                       --------     ----------           ----------    ---------- 
                                       $307,301     $  282,493           $  710,909    $1,300,703
                                       ========     ==========           ==========    ==========
</TABLE>
        See notes to unaudited pro forma combined financial statements.
                                    F-18
<PAGE>
<TABLE>
<CAPTION>

              UNAUDITED PRO FORMA COMBINED STATEMENTS OF STOCKHOLDERS' EQUITY (DEFICIT)

                                        December 31, 1997

                                        "Vanden"      "Entropin"          Pro forma     Pro forma
                                        Historical    Historical          Adjustments   Combined
<S>                                   <C>           <C>          <C>    <C>          <C>
Series A redeemable preferred
   stock, $.001 par value;
    3,210,487, shares issued
    and outstanding                    $      -     $         -     (E)  $3,210,487    $3,210,487
                                       ========     ===========          ==========    ==========

Stockholders' equity (deficit):
   Preferred stock, $.001 par
     value; 10,000,000 shares
     authorized, Series A
     reported above                    $      -     $         -          $        -    $        -

   Common  stock,  $.001  par  value;  
     50,000,000  shares  authorized,   
     300,050 (Vanden), 5,220,000 
     (Entropin) and 6,000,051 (combined) 
     shares issued and outstanding        9,002           5,220     (B)      (8,702)
                                                                    (D)         300
                                                                    (A)         180         6,000

   Additional paid-in capital           687,469       1,043,780     (B)       8,702
                                                                    (C)    (476,471)
                                                                    (D)     797,810
                                                                    (A)         (80)    2,061,210
   Deficit accumulated
     during the
     development stage                 (401,813)     (4,561,175)    (A)     (74,658)
                                                                    (C)     476,471    (4,561,175)
                                       --------     -----------          ----------    ----------
Total stockholders' equity
   (deficit)                           $294,658     $(3,512,175)         $  723,552   $(2,493,965)
                                       ========     ===========          ==========   =========== 
</TABLE>

        See notes to unaudited pro forma combined financial statements.
                                       F-19
<PAGE>


           NOTES TO UNAUDITED PRO FORMA COMBINED FINANCIAL STATEMENTS


     The pro forma  adjustments  assume the reverse split of Vanden common stock
     at 1 share for 300 shares,  the  issuance of  5,220,000  shares of Vanden's
     $.001 par value  common  stock in  exchange  for the  5,220,000  issued and
     outstanding  shares of Entropin's  common stock,  the private  placement of
     300,000 shares of common stock at $2.75 per share,  the issuance of 180,001
     shares of common  stock  pursuant  to exercise  of stock  option  issued in
     connection with  recapitalization  and the issuance of 3,210,487  shares of
     the Series "A" preferred stock at $1 per share.

     The  acquisition  is  accounted  for as  recapitalization  of Entropin  and
     therefore, assets and liabilities are combined at historical cost.

     The following is a summary of the adjustments required based upon the above
     assumptions.

A.   Record  additional  costs  incurred to effect the  exchange  and payment of
     existing Vanden liabilities, including issuance of 180,000 shares of common
     stock.

B.   Reverse  split of Vanden  common  stock at 1 share for 300  shares  and the
     increase par value thereof from $.0001 per share to $.001 per share.

C.   Issuance of Vanden common stock in exchange for Entropin common stock.

D.   Issuance of 300,000 shares of the Company's common stock at $2.75 per share
     pursuant to a private  placement  effective January 15 1998, gross proceeds
     of $825,000 less offering and merger expenses of $26,890.

E.   Issuance of 3,210,487 shares of $.001 par value preferred stock in exchange
     for notes  payable and  accrued  interest of  $1,710,487  and  compensation
     agreement of $1,500,000.










                                       F-20
<PAGE>





                                 ENTROPIN, INC.




                                _________ Shares









                                   PROSPECTUS











                                __________, 1998

<PAGE>
                                     PART II

                     INFORMATION NOT REQUIRED IN PROSPECTUS

ITEM 24. INDEMNIFICATION OF DIRECTORS AND OFFICERS.
         ------------------------------------------

A. The Colorado Business  Corporation Act (the "Act") allows  indemnification of
directors,  officers,  employees and agents of the Company  against  liabilities
incurred in any proceeding in which an individual is made a party because he was
a director,  officer,  employee or agent of the Company if such person conducted
himself  in good  faith and  reasonable  believed  his  actions  were in, or not
opposed to, the best interests of the Company,  and with respect to any criminal
action or  proceeding,  had no  reasonable  cause to  believe  his  conduct  was
unlawful.  A person must be found to be entitled to  indemnification  under this
statutory standard by procedures  designed to assure that disinterested  members
of the Board of Directors  have  approved  indemnification  or that,  absent the
ability to obtain  sufficient  numbers of disinterested  directors,  independent
counsel or  shareholders  have approved the  indemnification  based on a finding
that the person has met the standard.  Indemnification  is limited to reasonable
expenses. In addition, the Company's By-Laws provide that the Company shall have
the power to indemnify  its  officers,  directors,  employees  and agents to the
extent permitted by the Act.

          Specifically, the Act provides as follows:

          "7-109-102. AUTHORITY TO INDEMNIFY DIRECTORS

          (1)  Except  as  provided  in  subsection  (4)  of  this  section,   a
corporation  may  indemnify  a person made a party to a  proceeding  because the
person is or was a director against liability incurred in the proceeding if:

               (a) The person conducted himself or herself in good faith; and

               (b) The person reasonably believed:

                   (I) In the case of conduct in an official  capacity  with the
corporation,  that his or her conduct was in the  corporation's  best interests;
and

                   (II) In all other cases, that his or her conduct was at least
not opposed to the corporation's best interests; and

               (c) In the case of any  criminal  proceeding,  the  person had no
reasonable cause to believe his or her conduct was unlawful.


                                      II-1

<PAGE>

          (2) A director's  conduct with respect to an employee benefit plan for
a  purpose  the  director  reasonably  believed  to be in the  interests  of the
participants  in or  beneficiaries  of the plan is conduct  that  satisfies  the
requirement  of  subparagraph  (II) of paragraph (b) of  subsection  (1) of this
section.  A director's  conduct  with respect to an employee  benefit plan for a
purpose that the director did not  reasonably  believe to be in the interests of
the  participants in or beneficiaries of the plan shall be deemed not to satisfy
the requirements of paragraph (a) of subsection (1) of this section.

          (3) The  termination of a proceeding by judgment,  order,  settlement,
conviction,  or upon a plea of nolo  contendere  or its  equivalent  is not,  of
itself,  determinative  that the  director  did not meet the standard of conduct
described in this section.

          (4)  A corporation may not indemnify a director under this section:

               (a) In  connection  with a  proceeding  by or in the right of the
corporation in which the director was adjudged liable to the corporation; or

               (b) In  connection  with any other  proceeding  charging that the
director derived an improper personal  benefit,  whether or not involving action
in an official capacity, in which proceeding the director was adjudged liable on
the basis that he or she derived an improper personal benefit.

          (5) Indemnification  permitted under this section in connection with a
proceeding  by or in the  right of the  corporation  is  limited  to  reasonable
expenses incurred in connection with the proceeding.

          7-109-103. MANDATORY INDEMNIFICATION OF DIRECTORS

          Unless limited by its articles of  incorporation,  a corporation shall
indemnify a person who was wholly successful, on the merits or otherwise, in the
defense of any  proceeding to which the person was a party because the person is
or  was a  director,  against  reasonable  expenses  incurred  by  him or her in
connection with the proceeding.

          7-109-105 COURT-ORDERED INDEMNIFICATION OF DIRECTORS

          (1) Unless  otherwise  provided in the  articles of  incorporation,  a
director who is or was a party to a proceeding may apply for  indemnification to
the  court   conducting   the  proceeding  or  to  another  court  of  competent
jurisdiction.  On receipt of an application,  the court, after giving any notice
the court  considers  necessary,  may  order  indemnification  in the  following
manner:

               (a) If it  determines  that the director is entitled to mandatory
indemnification under section 7-109-103,  the court shall order indemnification,

                                      II-2
<PAGE>

in which case the court shall also order the  corporation  to pay the director's
reasonable expenses incurred to obtain court-ordered indemnification.

               (b) If it determines  that the director is fairly and  reasonably
entitled to indemnification in view of all the relevant  circumstances,  whether
or  not  the  director  met  the  standard  of  conduct  set  forth  in  section
7-109-102(1)  or was adjudged liable in the  circumstances  described in section
7-109-102(4),  the court  may  order  such  indemnification  as the court  deems
proper;  except that the indemnification with respect to any proceeding in which
liability  shall have been  adjudged in the  circumstances  described in section
7-109- 102(4) is limited to reasonable  expenses incurred in connection with the
proceeding   and   reasonable   expenses   incurred   to  obtain   court-ordered
indemnification.

          7-109-106.  DETERMINATION  AND  AUTHORIZATION  OF  INDEMNIFICATION  OF
DIRECTORS

          (1) A corporation may not indemnify a director under section 7-109-102
unless  authorized in the specific case after a determination has been made that
indemnification of the director is permissible in the circumstances  because the
director  has met the  standard  of conduct  set forth in section  7-109-102.  A
corporation  shall not advance  expenses to a director  under section  7-109-104
unless  authorized  in the  specific  case  after the  written  affirmation  and
undertaking required by section  7-109-104(1)(a) and (1)(b) are received and the
determination required by section 7-109-104(1)(c) has been made.

          (2) The  determinations  required by  subsection  (1) of this  section
shall be made:

               (a) By the board of directors by a majority vote of those present
at a meeting at which a quorum is present,  and only those directors not parties
to the proceeding shall be counted in satisfying the quorum; or

               (b) If a quorum  cannot  be  obtained,  by a  majority  vote of a
committee of the board of directors designated by the board of directors,  which
committee  shall consist of two or more directors not parties to the proceeding;
except that directors who are parties to the  proceeding may  participate in the
designation of directors for the committee.

          (3) If a quorum cannot be obtained as contemplated in paragraph (a) of
subsection  (2) of this section,  and a committee  cannot be  established  under
paragraph  (b) of  subsection  (2) of this  section,  or,  even if a  quorum  is
obtained  or  a  committee  is  designated,  if  a  majority  of  the  directors
constituting  such  quorum  or such  committee  so  directs,  the  determination
required to be made by subsection (1)of this section shall be made:

               (a) By independent  legal counsel selected by a vote of the board
of directors or the committee in the manner specified in paragraph (a) or (b) of
subsection  (2) of this  section  or,  if a quorum of the full  board  cannot be

                                      II-3
<PAGE>

obtained and a committee  cannot be  established,  by independent  legal counsel
selected by a majority vote of the full board of directors; or

               (b) By the shareholders.

          (4) Authorization of indemnification  and advance of expenses shall be
made in the same manner as the determination that  indemnification or advance of
expenses is permissible;  except that, if the determination that indemnification
or advance of expenses is  permissible  is made by  independent  legal  counsel,
authorization  of  indemnification  and advance of expenses shall be made by the
body that selected such counsel.

          7-109-107.  INDEMNIFICATION OF OFFICERS,  EMPLOYEES,  FIDUCIARIES, AND
AGENTS

          (1) Unless otherwise provided in the articles of incorporation:

               (a) An officer is entitled  to  mandatory  indemnification  under
section 7- 109-103,  and is entitled to apply for court-ordered  indemnification
under section 7-109-105, in each case to the same extent as a director;

               (b) A  corporation  may  indemnify  and  advance  expenses  to an
officer, employee,  fiduciary, or agent of the corporation to the same extent as
to a director; and

               (c) A corporation  may also indemnify and advance  expenses to an
officer,  employee,  fiduciary,  or agent  who is not a  director  to a  greater
extent,  if not  inconsistent  with public  policy,  and if provided  for by its
bylaws, general or specific action of its board of directors or shareholders, or
contract.

          7-109-108. INSURANCE

          A  corporation  may  purchase  and  maintain  insurance on behalf of a
person who is or was a director,  officer, employee,  fiduciary, or agent of the
corporation, or who, while a director, officer, employee, fiduciary, or agent of
the  corporation,  is or was  serving  at the  request of the  corporation  as a
director,  officer, partner, trustee,  employee,  fiduciary, or agent of another
domestic or foreign  corporation or other person or of an employee benefit plan,
against liability asserted against or incurred by the person in that capacity or
arising from his or her status as a director,  officer, employee,  fiduciary, or
agent,  whether or not the corporation  would have power to indemnify the person
against the same liability under section 7-109-102, 7-109-103, or 7-109-107. Any
such  insurance  may be procured from any  insurance  company  designated by the
board of directors,  whether such insurance  company is formed under the laws of
this  state  or any  other  jurisdiction  of the  United  States  or  elsewhere,
including any insurance  company in which the  corporation  has an equity or any
other interest through stock ownership or otherwise.

                                      II-4

<PAGE>

          7-109-109. LIMITATION OF INDEMNIFICATION OF DIRECTORS

          (1) A  provision  treating  a  corporation's  indemnification  of,  or
advance  of  expenses  to,  directors  that  is  contained  in its  articles  of
incorporation  or  bylaws,  in a  resolution  of its  shareholders  or  board of
directors, or in a contract,  except an insurance policy, or otherwise, is valid
only to the extent the provision is not inconsistent with sections  7-109-101 to
7-109-108.  If the articles of incorporation limit indemnification or advance of
expenses,  indemnification  and advance of expenses are valid only to the extent
not inconsistent with the articles of incorporation. . (2) Sections 7-109-101 to
7-109-108  do not  limit a  corporation's  power  to pay or  reimburse  expenses
incurred  by a  director  in  connection  with an  appearance  as a witness in a
proceeding  at a time  when he or she has not  been  made a named  defendant  or
respondent in the proceeding.


          7-109-110. NOTICE TO SHAREHOLDERS OF INDEMNIFICATION OF DIRECTOR

          If a corporation  indemnifies or advances expenses to a director under
this  article  in  connection  with  a  proceeding  by or in  the  right  of the
corporation, the corporation shall give written notice of the indemnification or
advance to the shareholders with or before the notice of the next  shareholders'
meeting.  If the next  shareholder  action is taken  without  a  meeting  at the
instigation  of the  board  of  directors,  such  notice  shall  be given to the
shareholders  at or  before  the  time the  first  shareholder  signs a  writing
consenting to such action."

B.  Article  VIII  of  the  Registrant's   Amended  and  Restated   Articles  of
Incorporation  provides for the  elimination of personal  liability for monetary
damages for the breach of fiduciary duty as a director  except for liability (i)
resulting from a breach of the  director's  duty of loyalty to the Registrant or
its shareholders;  (ii) for acts or omissions not in good faith or which involve
intentional  misconduct or a knowing  violation of the law;  (iii) for approving
payment of distributions to shareholders to the extent that any such actions are
illegal under the Act; or (iv) for any transaction from which a director derives
an improper  personal  benefit.  This Article further provides that the personal
liability of the  Registrant's  directors  shall be eliminated or limited to the
fullest extent permitted by the Act.

     On January 29, 1998, the Company obtained  Directors and Officers indemnity
liability insurance coverage,  including securities coverages,  in the amount of
$3,000,000  which  indemnifies the Company  against claims,  as well as provides
coverage  against any claims  against the officers and  directors of the Company
which (i) the Company is not legally  permitted  or required to pay or (ii) when
the Company is legally  required or  permitted  to pay such loss as indemnity to
the  Directors  and  Officers but cannot in fact pay such loss due solely to the
financial insolvency of the Company.

                                      II-5

<PAGE>

     There is no pending litigation or proceeding involving a director, officer,
employee or other agent of the Company as to which  indemnification  is being or
may be sought,  and the Company is not aware of any other  pending or threatened
litigation  that may  result  in claims  for  indemnification  by any  director,
officer, employee or other agent.

ITEM 25.  OTHER EXPENSES OF ISSUANCE AND DISTRIBUTION
          -------------------------------------------

     The  following  is an  itemization  of  all  expenses  (subject  to  future
contingencies)  incurred or to be incurred by the Registrant in connection  with
the issuance and distribution of the securities being offered.

     Registration and filing fee ................................    $ 13,130.19
     Printing . . . . . . . .....................................       1,000.00
     Edgar costs ................................................       1,000.00
     Accounting fees and expenses ...............................       3,000.00
     Legal fees and expenses ....................................      25,000.00
     Blue Sky fees and filing fees ..............................       7,500.00
     Postage and Delivery .......................................       1,500.00
     Miscellaneous ..............................................         350.00
                                                                     -----------
     Total ......................................................    $ 52,480.19
                                                                     ===========

     All amounts listed above,  except for the registration fees, are estimates.
All  expenses  itemized  above  will  be  paid by the  Registrant.  Sales  agent
discounts and commissions to any brokers or dealers will be borne by the Selling
Shareholders for the Shares offered by the Selling Shareholders.

                                      II-6

<PAGE>

ITEM 26.  RECENT SALES OF UNREGISTERED SECURITIES
          ---------------------------------------

     During the three years  preceding the initial  filing of this  Registration
Statement,  the Registrant sold securities  which were not registered  under the
Act in the  transactions  described below. In the following  instance  described
below in which the Company  relied on Section 4(2) of the Act for the  exemption
from the registration requirements, the following circumstances apply: Each sale
was  effected  with a limited  number of  persons in a private  transaction  not
involving a public  offering.  Each investor was able to fend for himself in the
transaction, each investor was furnished with information concerning the Company
and each had the opportunity to verify the information  supplied.  Additionally,
the Company obtained a signed representation from each investor as to his or her
intent to acquire the Common Stock of the Company for the purpose of  investment
only and not with a view toward the subsequent distribution thereof; each of the
certificates  representing the Common Stock issued to the foregoing  persons has
been embossed with a legend restricting transfer of the Common Stock represented
thereby;  and the Company has issued stop transfer  instructions to its Transfer
Agent concerning the certificates representing all of the shares issued pursuant
to Section 4(2) as described below.

     On Janauary 15, 1998,  in order to  consummate  the  Agreement  and Plan of
Merger with  Entopin,  Inc.,  a California  corporation  ("Old  Entropin"),  the
Registrant  issued its  securities to the following  persons in exchange for the
issued and outstanding shares of stock of Old Entropin.  These transactions were
effected  under the exemption from  registration  provided under Section 4(2) of
the Act and Rule 506 of Regulation D promulagated  thereunder,  for transactions
not involving a public offering.

<TABLE>
<CAPTION>
                             January 1998 Vanden-Old Entropin Merger
                             ---------------------------------------

                                                                       Consideration Received
                                          No. of Shares                  (# of Old Entropin
                                          -------------                  ------------------
                                                                              Shares)
                                                                              ------
                                                    Series A                          Series A
Name                                   Common       Preferred          Common         Preferred
- ----                                   ------       ---------          ------         ---------            
<S>                                   <C>             <C>             <C>               <C>
Caroline T. Somers                    1,145,793                       1,145,793
Higgins D. & Shirley A. Bailey        1,404,093                       1,404,093
Higgins D. Bailey, Pledge             1,404,093                       1,404,093
Higgins D. Bailey                                     178,000                           178,000
Chandler G. Brown                       257,085                         257,085
CapMac Eighty-Two LP                     73,130                          73,130
</TABLE>

                                      II-7

<PAGE>
<TABLE>
<CAPTION>
                                                                       Consideration Received
                                          No. of Shares                  (# of Old Entropin
                                          -------------                  ------------------
                                                                              Shares)
                                                                              ------
                                                    Series A                          Series A
Name                                   Common       Preferred          Common         Preferred
- ----                                   ------       ---------          ------         ---------            
<S>                                    <C>          <C>               <C>             <C> 
Milton D. McKenzie, Trustee
for The Milton D. McKenzie
Revocable Trust                        102,834                        102,834
Milton D. McKenzie                      52,632                         52,632
James E. Wynn                          518,085      1,500,000         518,085         1,500,000
CKC Partners                            78,300                         78,300
Danny and Nancy Yu                      10,000                         10,000
Brent and Marlene Jackson               50,000                         50,000
William J. Currin                       10,000                         10,000
Jacquelyn D. Anderson Baker              5,455                          5,455
Interstate Johnson Lane Corp.           10,000                         10,000
Dennis K. Metzler                        5,000                          5,000
Jerry L. And Nancy Sands                 1,000                          1,000
The Macy Family Trust                   10,000                         10,000
Dewey H. And Virginia Crim              20,000                         20,000
James W. Toot                            7,500                          7,500
Robert L. Simpson                        5,000                          5,000
Gladys F. Decker & Deloras D.
Hunter, Trustees for Gladys F.
Decker Trust No. 1                      20,000                         20,000
Donald Hunter, Trustee of the
Donald Hunter Residuary
Marital Trust                           80,000                         80,000
Deloras Decker Hunter, Trustee
of the Deloras Decker Hunter
Generation Skipping Trust               10,000                         10,000
</TABLE>

                                      II-8

<PAGE>
<TABLE>
<CAPTION>
                                                                       Consideration Received
                                          No. of Shares                  (# of Old Entropin
                                          -------------                  ------------------
                                                                              Shares)
                                                                              ------
                                                    Series A                          Series A
Name                                   Common       Preferred          Common         Preferred
- ----                                   ------       ---------          ------         ---------            
<S>                                   <C>           <C>              <C>              <C> 
Lowell M. Somers                                      822,446                           822,446
Thomas T. Anderson Trust                              710,041                           710,041
The Underwood Family Partners            60,001                         60,001
Steven C. & Lynn T. Quoy                 60,000                         60,000
Suzanne Oliphant                         10,000                         10,000
Albert W. White                          10,000                         10,000
Stephen H. West                          20,000                         20,000
C. Richard Harrison                      10,000                         10,000
Jeanette Y. Mihaly                       20,000                         20,000
Joy Ann Svenson                          10,000                         10,000
Richard L. Monfort                      180,000                        180,000
David T. Treadwell                       10,000                         10,000
David Bressler                            5,000                          5,000
Gerald Olesh                             10,000                         10,000
Arthur Kassoff                           10,000                         10,000
Armond A. Azharian                        5,000                          5,000
                                      ---------     ---------        ---------        ---------
     TOTAL                            5,700,001     3,210,487        5,700,001        3,210,487
                                      =========     =========        =========        =========
</TABLE>


Item 27.  Exhibits and Financial Schedules

     The following is a complete list of exhibits filed as part of this
Registration Statement, which Exhibits are incorporated herein.

Exhibit
Number         Description
- -------        -----------
      
3.1            Articles of Incorporation(1)

3.2            Bylaws(1)

                                      II-9

<PAGE>

3.3            Articles of Merger, as filed with the Colorado Secretary of State
               on January 15, 1998 (2)

3.4            Amended and Restated Articles of Incorporation, as filed with the
               Colorado Secretary of State on January 15, 1998, as correct.(2)

4.3            Specimen  copy of stock  certificate  for  Common  Stock,$.001par
               value;  Specimen copy of stock certificate for Series A Preferred
               Stock,$.001par value (2)

5.1            Form of Opinion of Brenman Bromberg & Tenenbaum, P.C.

10.1           Stock Option Plan(1)

10.2           Stock Bonus Plan(1)

10.3           Agreement  and Plan of Merger,  dated  December  9, 1997  between
               Vanden Capital Group, Inc. and Entropin, Inc.(2)

10.4           Agreement  dated  January 1, 1997,  between  the  Registrant  and
               Mallinckrodt, Inc. (Development and Supply Agreement)(4)

10.5           Lease Agreement,  dated February 1, 1998,  between the Registrant
               and Thomas T. Anderson(4)

10.6           License  Agreement dated January 1, 1998,  between the Registrant
               and Dr. James E. Wynn (4)

10.7           Assignment  of Patent  #4,556,663  dated  September  24, 1992, by
               Lowell M. Somers, M.D. to Entropin, Inc(4)

10.8           Assignment  of Patent  #4,512,996  dated  September  24, 1992, by
               Lowell M. Somers, M.D. to Entropin, Inc (4)

10.9           Assignment  of Patent  #4,469,700  dated  September  24, 1992, by
               Lowell M. Somers, M.D. to Entropin, Inc.(4)

10.10          Assignment of rights in the  application for Letters Patent under
               Serial Number 07/999,307 by Lowell M. Somers and James E. Wynn to
               Entropin, Inc., dated February 16, 1993(4)

10.11          Assignment of rights in the  application for Letters Patent under
               Serial Number 08/260,054 by Lowell M. Somers and James E. Wynn to
               Entropin, Inc., dated July 29, 1994 (4)

10.12          Agreement  dated April 18, 1998 by and between the Registrant and
               the Western Center for Clinical Studies, Inc.(5)

                                      II-10

<PAGE>

16.0           Statement  from  Schumacher &  Associates,  the prior  certifying
               accountant  in  response  to  the  information  disclosed  in the
               Company's  Form 8-K dated March 25, 1998,  captioned  "Changes in
               Registrant's Certifying Accountant" (3)

24.1           Consent  of Brenman  Bromberg  &  Tenenbaum,  P.C.  (included  in
               Exhibit 5)

24.2           Consent of Causey Demgen & Moore Inc.

27             Financial Data Schedule

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

(1)  Incorporated  by reference  from the like numbered  exhibits filed with the
     Registrant's  Registration  Statement on Form S-1, No.  33-23693  effective
     October 21, 1989.
(2)  Incorporated  by reference  from the like numbered  exhibits filed with the
     Registrant's  Current  Report on Form 8-K,  as amended,  dated  January 15,
     1998.
(3)  Incorporated  by reference  from an exhibit  numbered 4.0 as filed with the
     Registrant's Current Report on Form 8-K, as amended, dated March 25, 1998.
(4)  Incorporated  by reference  from the like numbered  exhibits filed with the
     Registrant's Annual Report on Form 10K-SB, dated April 15, 1998.
(5)  Incorporated  by reference  from the like  numbered  exhibit filed with the
     Registrant's Current Report on Form 8-K, dated April 23, 1998.


Item 28.  UNDERTAKINGS
          ------------

The undersigned Registrant will:

     (a)(1) File,  during any period in which it offers or sells  securities,  a
post-effective  amendment  to this  registration  statement  to: (i) include any
prospectus  required by Section  10(a)(3) of the Securities Act; (ii) reflect in
the prospectus any facts or events which, individually or together,  represent a
fundamental change in the information in the registration  statement;  and (iii)
include  any  additional  or  changed  material   information  on  the  plan  of
distribution.

     (2)  For  determining  liability  under  the  Securities  Act,  treat  each
post-effective  amendment  as a new  registration  statement  of the  securities
offered,  and the offering of the securities at that time to be the initial bona
fide offering.

     (3) File a post-effective  amendment to remove from registration any of the
securities that remain unsold at the end of the offering.

     The undersigned  Registrant will provide to the Underwriters at the closing
specified in the underwriting  agreement  certificates in such denominations and
registered  in such  names as  required  by the  Underwriters  to permit  prompt
delivery to each purchaser.

     Insofar as indemnification for liabilities arising under the Securities Act
of 1933 (the "Act") may be permitted  to  directors,  officers  and  controlling
persons of the Registrant  pursuant to the foregoing  provisions,  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

                                     II-11
<PAGE>

person of the  Registrant  in the  successful  defense  of any  action,  suit or
proceeding)  is  asserted by such  director,  officer or  controlling  person in
connection with the securities being registered,  the Registrant will, unless in
the opinion of its counsel the matter has been settled by controlling precedent,
submit  to a  court  of  appropriate  jurisdiction  the  question  whether  such
indemnification  by it is against  public policy as expressed in the  Securities
Act and will be governed by the final adjudication of such issue.


                                      II-12

<PAGE>



                                   SIGNATURES

     In accordance  with the  requirements  of the  Securities  Act of 1933, the
Registrant certifies that it has reasonable grounds to believe that it meets all
of the  requirements  for filing on Form SB-2 and authorized  this  Registration
Statement  to be  signed  on its  behalf  by  the  undersigned,  thereunto  duly
authorized, in the City and County of Denver, State of Colorado on May 1, 1998.

                                 ENTROPIN, INC.



                                 By: /s/ Higgins D. Bailey
                                     ----------------------------
                                     Higgins D. Bailey, Chairman


     In accordance  with the  requirements  of the Securities Act of 1933,  this
Registration Statement was signed by the following persons in the capacities and
on the dates indicated.

<TABLE>
<CAPTION>
Signatures                                Title                                   Date
- ----------                                -----                                   ----        
<S>                                       <C>                                <C> 
 /s/ Higgins D. Bailey                    Chairman of the Board               May 1, 1998
- -----------------------------             of Directors, CEO, CFO
Higgins D. Bailey                         and Director

 /s/ Daniel L. Azarnoff, M.D.             President                           May 1, 1998
- -----------------------------
Daniel L. Azarnoff, M.D.


 /s/ Wellington A. Ewen                   Chief Financial Officer             May 1, 1998
- -----------------------------
Wellington A. Ewen


 /s/ Donald Hunter                        Secretary and Director              May 1, 1998
- -----------------------------
William J. Collard


 /s/ Dewey H. Crim                        Treasurer and Director              May 1, 1998
- -----------------------------
Dewey H. Crim


/s/ James E. Wynn                         Director                            May 1, 1998
- -----------------------------
James E. Wynn
</TABLE>

                                      II-13

                                                                     Exhibit 5.1

                       BRENMAN BROMBERG & TENENBAUM, P.C.
                        1775 Sherman Street, Suite 1001
                             Denver, CO 80203-4314
                              Phone (303) 894-0234
                               Fax (303) 839-1633


                                 April 30, 1998

The Board of Directors
Entropin, Inc.
45926 Oasis Street
Indio, CA 92201

Re:      Form SB-2 Registration Statement
         Opinion of Counsel

Dear Sirs:

         As  securities  counsel for Entropin,  Inc. (the  "Company") a Colorado
corporation,  we have examined the  originals or copies,  certified or otherwise
identified,  of the Articles of  Incorporation,  as restated  and  amended,  and
Bylaws of the Company,  corporate records of the Company, including minute books
of the  Company  as  furnished  to us by the  Company,  certificates  of  public
officials and of  representatives  of the Company,  statutes and other  records,
instruments and documents  pertaining to the Company as a basis for the opinions
hereinafter expressed. In giving such opinions, we have relied upon certificates
of officers of the Company with  respect to the accuracy of the factual  matters
contained in such certificates.

         We have also, as such counsel,  examined the Registration  Statement on
Form SB-2, File No. 333-_______ (the "Registration  Statement") to be filed with
the  Commission  on or about May 4, 1998  covering the resale of up to 5,934,547
shares of Common  Stock of the  Company  by the  Selling  Shareholders,  and the
Company's  issuance  of up to 180,001  shares of Common  Stock upon  exercise of
options, all as more particularly described in the Registration Statement.

         Based upon the  foregoing and subject to the other  qualifications  and
limitations stated in this letter, we are of the opinion that:

         (1)      The  outstanding  shares  of  Common  Stock  to be sold by the
                  Selling Shareholders have been duly authorized and are validly
                  issued, fully paid and non-assessable.

         (2)      The  shares of Common  Stock to be  issued to  holders  of the
                  options  held by the Selling  Shareholders,  and the shares of
                  Common Stock underlying the options, upon exercise and payment
                  of the  exercise  price  stated  therein,  will have been duly
                  authorized, validly issued, fully paid and non-assessable.

     This  opinion is a legal  opinion and not an opinion as to matters of fact.
This opinion is limited to the laws of the State of Colorado and the federal law
of the United States of America,  and to the matters stated herein. This opinion
is made as of the date hereof,  and after the date hereof,  we undertake no, and

<PAGE>

The Board of Directors
Entropin, Inc.
April 30, 1998
Page  2

disclaim  any,  obligation  to advise you of any change in any matters set forth
herein.  This  opinion  is  furnished  to you  solely  in  connection  with  the
transactions  referred to herein,  and may not be relied on by any other person,
firm or entity without our prior written consent.

         We  acknowledge  that we are  referred  to  under  the  caption  "Legal
Matters" included in the Registration  Statement.  We hereby consent to such use
of our name in the  Registration  Statement and to the filing of this opinion as
an Exhibit thereto. In giving this consent, we do not thereby admit that we come
within the category of persons whose consent is required  under Section 7 of the
United  States  Securities  Act of  1933 or the  Rules  and  Regulations  of the
Securities and Exchange Commission promulgated thereunder.

                                         Very truly yours,

                                         /S/ Brenman Bromberg & Tenenbaum, P.C.

                            CONSENT OF INDEPENDENT CERTIFIED PUBLIC ACCOUNTANTS



We consent to the use in the  Registration  Statement of Entropin,  Inc. on Form
SB-2 of our report dated  February 22, 1998,  except for Note 9, as to which the
date is March 19, 1998,  relating to the balance  sheet of Entropin,  Inc. as of
December   31,  1996  and  1997and  the  related   statements   of   operations,
stockholders'  equity and cash flows for the years then ended and for the period
from August 27, 1984  (inception)  through December 31, 1997. We also consent to
the reference to us under the heading "Experts" in such Prospectus.



Denver, Colorado                                    CAUSEY DEMGEN & MOORE INC.
May 1, 1998

<TABLE> <S> <C>

<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
REGISTRANT'S FORM SB-2 REGISTRATION STATEMENT AND IS QUALIFIED IN ITS ENTIRETY
TO SUCH FORM SB-2 REGISTRATION STATEMENT.
</LEGEND>
       
<S>                             <C>
<PERIOD-TYPE>                   12-MOS
<FISCAL-YEAR-END>                          DEC-31-1997
<PERIOD-END>                               DEC-31-1997
<CASH>                                             291
<SECURITIES>                                         0
<RECEIVABLES>                                    5,000
<ALLOWANCES>                                         0
<INVENTORY>                                          0
<CURRENT-ASSETS>                                 5,921
<PP&E>                                               0
<DEPRECIATION>                                       0
<TOTAL-ASSETS>                                 282,493
<CURRENT-LIABILITIES>                          428,686
<BONDS>                                              0
                                0
                                          0
<COMMON>                                         5,220
<OTHER-SE>                                   3,517,395
<TOTAL-LIABILITY-AND-EQUITY>                   282,493
<SALES>                                              0
<TOTAL-REVENUES>                                     0
<CGS>                                                0
<TOTAL-COSTS>                                        0
<OTHER-EXPENSES>                               971,062
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                             127,386
<INCOME-PRETAX>                            (1,098,448)
<INCOME-TAX>                                         0
<INCOME-CONTINUING>                        (1,098,448)
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                               (1,098,448)
<EPS-PRIMARY>                                   (0.21)
<EPS-DILUTED>                                   (0.21)
        

</TABLE>


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