Exhibit 8                                                       
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                                Form of Opinion
                             Bingham, Dana & Gould
                               150 Federal Street
                          Boston, Massachusetts 02110


                                          , 199


Chemex Pharmaceuticals, Inc.
One Executive Drive
Fort Lee, New Jersey 07024


Ladies and Gentlemen:

        This opinion is furnished to you pursuant to Section 6.17 of the
Agreement of Merger and Plan of Reorganization (the "Merger Agreement"), dated
as of October 3, 1995, as amended and restated as of October 31, 1995, between
Chemex Pharmaceuticals, Inc., a Delaware corporation ("Chemex"), and ACCESS
Pharmaceuticals, Inc., a Texas corporation ("ACCESS").  The Merger Agreement
provides for the merger (the "Merger") of ACCESS with and into Chemex.  Except
as specifically provided below, all capitalized terms not otherwise defined
herein have the meanings ascribed to them in the Merger Agreement.

        We have acted as special tax counsel for Chemex in connection with, and
in such capacity are familiar with the principal terms of, the proposed 
Merger. In connection with this opinion we have examined and relied upon the 
originals or copies, certified or otherwise identified to us to our 
satisfaction, of the Merger Agreement, the draft Joint Proxy 
Statement/Prospectus (the "Joint Proxy/Prospectus") included in the 
Registration Statement on Form S-4 filed with the Securities and Exchange 
Commission (the "Commission") on November 7, 1995, and as amended by 
Amendment No. 1 filed with the Commission on December 14, 1995 by Chemex in 
connection with the Merger, and related documents, including the Exhibits and 
Schedules to the Merger Agreement (collectively, the "Documents").  In that 
examination, we have assumed the genuineness of all signatures, the 
authenticity and completeness of all documents purporting to be originals 
(whether reviewed by us in original or copy form) and the conformity to the 
originals of all documents purporting to be copies.

        As to certain factual matters, we have relied with your consent upon,
and our opinion is limited by, the representations of the various parties set
forth in the Documents and on certificates delivered to us by each of ACCESS,
Chemex and certain stockholders of ACCESS dated on or about the date hereof, 
copies of which are attached hereto (the "Certificates").  We have assumed 
with your permission, that the Merger constitutes a merger in accordance with 
and under the laws of the State of Texas insofar as the same apply to the 
Merger.  In addition, our opinion assumes that (i) all representations set 
forth in the Documents and in such Certificates are true and correct in all 
material aspects at and as of the date of the Merger, (ii) the Merger 
Agreement is implemented in accordance with its terms and consistent with the 
representation set out in the Documents and Certificates, and (iii) 
stockholders owning in the aggregate no more than 10% of the ACCESS Stock will
demand and perfect appraisal rights under the Texas Business Corporation Act.
Our opinion is limited solely to the specific matters addressed herein and is 
based on the provisions of the federal Internal Revenue Code as now in effect 
(the "Code"), and the regulations, rulings, and interpretations thereof in 
force as of this date.  We assume no obligation to update our opinion to 
reflect any changes in law or in the interpretation thereof that may 
hereafter occur.


Chemex Pharmaceuticals, Inc.
           , 199
Page 2

        On the basis of and subject to the foregoing, we are of the opinion
that for federal income tax purposes, the Merger will constitute a
reorganization under Section 368(a) of the Internal Revenue Code of 1986, as
amended, and that, therefore, no gain or loss will be recognized by Chemex or
ACCESS as a result of the Merger.

        This opinion is being delivered solely to you for your use in
connection with the referenced transaction, and may not be relied upon by any
other person or used for any other purpose.

        We hereby consent to the filing of this opinion as an exhibit to the
Registration Statement and to the reference to this firm under the heading
"Legal Matters" in the Proxy Statement/Prospectus included in the Registration
Statement.

                                                Very truly yours,


                                                
                                                -------------------------
                                                BINGHAM, DANA & GOULD