EXHIBIT 10.11
                                                                    ENT-2
                                                                    -----

                               ASSIGNMENT
                               ----------

          I/We,
     (1) JAMES E. WYNN, and (2) LOWELL M. SOMERS residing, respectively, at

     (1)  306 Ayers Circle
          Summerville, South Carolina 29485 USA, and
     (2)  80-892 Highway 111
          Indio, California 92201 USA,

for good and valuable consideration, receipt of which is hereby
acknowledged, have assigned, sold and transferred to and do hereby assign,
sell and transfer to ENTROPIN, INC. a corporation organized and existing
under the laws of the STATE OF CALIFORNIA and having an office and a place
of business at 45-926 OASIS STREET, INDIO, CALIFORNIA 92201 its successors
and assigns: (1) the entire right, title and interest in the United States
and in all countries throughout the world in and to any and all my/our
inventions and discoveries disclosed in the application for Letters Patent
in the United States entitled: COVALENTLY COUPLED BENZOYLECGONINE, ECGONINE
AND ECGONIDINE DERIVATIVES, and filed in the United States Patent and
Trademark Office on JUNE 16, 1994, under Serial Number 08/260,054,
including any renewals, revivals, reissues, reexaminations, extensions,
continuations and divisions thereof, and any substitute applications
therefor; (2) the full and complete right to file patent applications in
the name of ENTROPIN, INC. its designee, or in my/our names at ENTROPIN,
INC. or its designee's election, on the aforesaid

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ASSIGN.2
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inventions, discoveries and applications in all countries of the world; (3)
the entire right, title and interest in and to any Letters Patent which may
issue thereon in the United States or in any other country of the world and
any renewals, revivals, reissues, reexaminations and extensions of the
same; and (4) the entire right, title and interest in all Convention and
Treaty Rights of all kinds thereon, including without limitation all rights
of priority in any country of the world, in and to the above inventions,
discoveries and applications.

     I/We hereby authorize and request the competent authorities to grant
and to issue any and all such Letters Patent in the United States and
throughout the world to ENTROPIN, INC. as the assignee of the entire right,
title and interest therein, as fully and entirely as the same would have
been held and enjoyed by me/us had this assignment, sale and transfer not
been made.

     I/We agree, at any time, upon the request of ENTROPIN, INC. to execute
and to deliver to ENTROPIN, INC. any additional applications for patents
for said inventions and discoveries, or any part or parts thereof, and any
applications for patents of confirmation, registration and importation
based on any Letters Patent issuing on said inventions, discoveries or
applications, and divisions, continuations, renewals, revivals, reissues,
reexaminations and extensions thereof.

     I/We further agree at any time to execute and to deliver upon request
of ENTROPIN, INC. such additional documents, if any, as are necessary or
desirable to secure patent protection on said inventions, discoveries and
applications throughout all countries of the world, and otherwise to do the
necessary to give full effect to and to perfect the rights of ENTROPIN,
INC. under this Assignment, including the execution, delivery and
procurement of any

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ASSIGN 2
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and all further documents evidencing this assignment, transfer and sale as
may be necessary or desirable.

                                   ASSIGNORS:

                                   /s/ JAMES E. WYNN               (1)
                                   -----------------------------------
                                   James E. Wynn

                                   /s/ LOWELL M. SOMERS            (2)
                                   -----------------------------------
                                   Lowell M. Somers

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ASSIGN.2
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          On this 29 day of July, 1994, James E. Wynn  (1) personally
appeared before me, a Notary Public in and for the State of South Carolina,
and executed the foregoing Assignment and duly acknowledged to me that such
Assignment was executed for the uses and purposes therein expressed.

                                   /s/ PATRICIA M. SHARPE
                                   --------------------------------------
                                           Notary Public

          On this 25 day of August, 1994, Lowell M. Somers (2) personally
appeared before me, a Notary Public in and for State of California, and
executed the foregoing Assignment and duly acknowledged to me that such
Assignment was executed for the uses and purposes therein expressed.

OFFICIAL SEAL                      /s/ OLGA B. HERNANDEZ
                                   --------------------------------------
                                            Notary Public

My Commission Expires July 20, 1993

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ACKNOWLEDGEMENT OF ASSIGNEE:

ENTROPIN, INC.
- --------------

By: /s/ HIGGINS D. BAILEY
   -------------------------------
   Higgins D. Bailey,
   President

          On this 3rd day of October, 1994, Higgins D. Bailey personally
appeared before me, a Notary Public in and for the State of South Carolina,
and duly acknowledged the executed Assignment on behalf of the Assignee.

                                   /s/ PATRICIA M. SHARPE
                                   --------------------------------------
                                            Notary Public

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ASSIGN.2
7/26/94 

Basic Info X:

Name:
Type:
Date: April 15, 1998
Company: ENTROPIN INC
State: Colorado

Other info:

Date:

  • JUNE 16 , 1994
  • this 29 day of July , 1994
  • this 25 day of August , 1994
  • July 20 , 1993
  • 3rd day of October , 1994

Organization:

  • Ayers Circle Summerville
  • Notary Public My Commission
  • the State of South Carolina

Location:

  • South Carolina
  • INDIO
  • United States Patent
  • ENTROPIN
  • State of California

Person:

  • James E. Wynn s LOWELL M. SOMERS
  • OLGA B. HERNANDEZ
  • Higgins D. Bailey
  • PATRICIA M. SHARPE