Document:

EXHIBIT 10.81
                                                                   -------------

NEITHER THIS WARRANT NOR THE SHARES OF COMMON STOCK ISSUABLE UPON EXERCISE OF
THIS WARRANT HAVE BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AND NEITHER
THIS WARRANT NOR SUCH SHARES MAY BE SOLD, ENCUMBERED OR OTHERWISE TRANSFERRED
EXCEPT PURSUANT TO AN EFFECTIVE REGISTRATION STATEMENT UNDER SUCH ACT OR AN
EXEMPTION FROM SUCH REGISTRATION REQUIREMENT, AND, IF AN EXEMPTION SHALL BE
APPLICABLE, THE HOLDER SHALL HAVE DELIVERED AN OPINION OF COUNSEL ACCEPTABLE TO
THE COMPANY THAT SUCH REGISTRATION IS NOT REQUIRED.

Void after 5:00 p.m. Eastern Standard Time, on November 29, 2004.

                        WARRANT TO PURCHASE COMMON STOCK

                                       OF

                                  DYNAGEN, INC.

FOR VALUE RECEIVED, DYNAGEN, INC., a Delaware corporation (the "Company"),
hereby certifies that FSC Corp. ("FSC") or its permitted designee or assignee,
is entitled to purchase from the Company, at any time or from time to time
commencing on November 29, 1999 and prior to 5:00 P.M., Eastern Standard Time,
on November 29, 2004, a total of 250,000 fully paid and nonassessable shares of
the common stock, par value $.01 per share, of the Company for an aggregate
purchase price of $0.38 per share. (Hereinafter, (i) said common stock, together
with any other equity securities which may be issued by the Company with respect
thereto or in substitution therefor, is referred to as the "Common Stock", (ii)
the shares of the Common Stock purchasable hereunder are referred to as the
"Warrant Shares", (iii) the aggregate purchase price payable hereunder for the
Warrant Shares is referred to as the "Aggregate Warrant Price", (iv) the price
payable hereunder for each of the Warrant Shares is referred to as the "Exercise
Price", (v) this Warrant, and all warrants hereafter issued in exchange or
substitution for this Warrant are referred to as the "Warrant" and (vi) the
holder of this Warrant is referred to as the "Holder".) The Exercise Price is
subject to adjustment as hereinafter provided.

         1.  Exercise of Warrant

         (a) Exercise. This Warrant may be exercised, in whole at any time or in
part from time to time, commencing on November 29, 1999 and prior to 5:00 P.M.,
Eastern Standard Time on November 29, 2004, by the Holder of this Warrant by the
surrender of this Warrant (with the subscription form at the end hereof duly
executed) at the address set forth in Section 7(a) hereof, together with proper
payment of the Aggregate Warrant Price, or the proportionate part thereof if
this Warrant is exercised in part. Payment for Warrant Shares shall be made by
certified or official bank check payable to the order of the Company. If this
Warrant is exercised in part, the Holder is entitled to receive a new Warrant
covering the number of Warrant Shares in respect of which this Warrant has not
been exercised and setting forth the proportionate part of the Aggregate Warrant
Price applicable to such Warrant Shares. Upon such surrender of this Warrant,
the Company will (a) issue a certificate or certificates in the name of the
Holder for the largest number of whole shares of the Common Stock to which the
Holder shall be entitled if this Warrant is exercised in whole and (b) deliver
the proportionate part thereof if this Warrant is exercised in part, pursuant to
the provisions of the Warrant. In lieu of any fractional share of the Common
Stock which would otherwise be issuable in respect to the exercise of the
Warrant, the Company at its option may (a) pay in cash an amount equal to the
product of (i) the daily mean average of the closing price of a share of Common
Stock on the ten consecutive trading days before the conversion date and (ii)
such fraction of a share or (b) issue an additional share of Common Stock.

         Upon exercise of the Warrant, the Company shall issue and deliver to
the Holder certificates for the Common Stock issuable upon such exercise within
ten business days after such exercise and the person exercising shall be deemed
to be the holder of record of the Common Stock issuable upon such exercise.
<PAGE>

         No warrant granted herein shall be exercisable after 5:00 p.m. Eastern
Standard Time on the fifth anniversary of the date of issuance.

         (b) Net Issuance. Notwithstanding anything to the contrary contained in
Section 1(a) hereof, in the case of any exercise on or prior to November 29,
2004 the Holder may elect to exercise this Warrant in whole or in part by
receiving shares of Common Stock equal to the net issuance value (as determined
below) of this Warrant, or any part hereof, upon surrender of this Warrant at
the principal office of the Company together with notice of such election (with
the form at the end hereof duly executed), in which event the Company shall
issue to the Holder a number of shares of Common Stock computed using the
following formula:

                  X= Y (A-B)
                     -------
                        A

         Where:   X = the number of shares of Common Stock to be issued to
                      the Holder

                  Y = the number of shares of Common Stock as to which this
                      Warrant is to be exercised

                  A = the mean of the last sale price of a share of Common Stock
                      on the ten consecutive trading days before the conversion
                      date, as reported by Bloomberg, L.P. or if not so
                      reported, on a consolidated transaction reporting system

                  B = the Exercise Price

         (c) Certain Adjustments

         The Exercise Price and the number of Warrant Shares shall be equitably
adjusted from time to time to account for stock splits, stock dividends,
combinations, recapitalizations, reclassifications and similar events.

         2. Reservation of Warrant Shares. The Company agrees that, prior to the
expiration of this Warrant, the Company will at all times have authorized and
reserved, and will keep available, solely for issuance or delivery upon the
exercise of this Warrant, the number of shares of the Common Stock as from time
to time shall be issuable upon the exercise of this Warrant.

         3.  Fully Paid Stock: Taxes. The Company agrees that the shares of the
Common Stock represented by each and every certificate for Warrant Shares
delivered on the exercise of this Warrant shall, at the time of such delivery,
be validly issued and outstanding, fully paid and nonassessable, and not subject
to preemptive rights, and the Company will take all such actions as may be
necessary to assure that the par value or stated value, if any, per share of the
Common Stock is at all times equal to or less than the then Exercise Price. The
Company further covenants and agrees that it will pay, when due and payable, any
and all Federal and state stamp, original issue or similar taxes that may be
payable in respect of the issue of any Warrant Share or certificate therefor.

         4.  Transfer

             (a) Securities Laws. Neither this Warrant nor the Warrant Shares
issuable upon the exercise hereof have been registered under the Securities Act
of 1933, as amended (the "Securities Act"), or under any state securities laws
and unless so registered may not be transferred, sold, pledged, hypothecated or
otherwise disposed of ("Transferred") unless an exemption from such registration
is available or if the Warrant or the Warrant Shares are sold in accordance with
Rule 144 promulgated under the Securities Act. In the event Holder desires to
transfer this Warrant or any of the Warrant Shares issued, the Holder must give
the Company prior written notice of such proposed transfer including the name
and address of the proposed transferee. Such transfer may be made only either
(i) upon publication by the Securities and Exchange Commission (the
"Commission") of a ruling, interpretation, opinion or "no action letter" based
upon facts presented to said Commission, or (ii) upon receipt by the Company of
an opinion of counsel to the Company in either case to the effect that the
proposed transfer will not violate the provisions of the Securities Act, the
Securities Exchange Act of 1934, as amended (the "Exchange Act"), or the rules
and regulations promulgated under either such act, or to the effect that the
Warrant or Warrant Shares to be sold or transferred have been registered under
the Securities Act and that there is in effect a registration statement in which
<PAGE>

is included a prospectus meeting the requirements of Section 10(a) of the
Securities Act, which is being or will be delivered to the purchaser or
transferee at or prior to the time of delivery of the certificates evidencing
the Warrant or Warrant Shares to be sold or transferred.

             (b) Conditions to Transfer. Prior to any such proposed transfer,
and as a condition thereto, if such transfer is not made pursuant to an
effective registration statement under the Securities Act, the Holder will, if
requested by the Company, deliver to the Company (i) an investment covenant
signed by the proposed transferee, (ii) an agreement by such transferee to the
impression of the restrictive investment legend set forth herein on the
certificate or certificates representing the securities acquired by such
transferee, (iii) an agreement by such transferee that the Company may place a
"stop transfer order" with its transfer agent or registrar, and (iv) an
agreement by the transferee to indemnify the Company to the same extent as set
forth in the next succeeding paragraph.

             (c) Indemnity. The Holder acknowledges that the Holder understands
the meaning and legal consequences of this Section 4, and the Holder hereby
agrees to indemnify and hold harmless the Company, its representatives and each
officer and director thereof from and against any and all loss, damage or
liability (including all attorneys' fees and costs incurred in enforcing this
indemnity provision) due to or arising out of (a) the inaccuracy of any
representation or the breach of any warranty of the Holder contained in, or any
other breach of, this warrant, (b) any transfer of the Warrant or any of the
Warrant Shares in violation of the Securities Act, the Exchange Act or the rules
and regulations promulgated under either of such acts, (c) any transfer of the
Warrant or any of the Warrant Shares not in accordance with this Warrant or (d)
any untrue statement or omission to state any material fact in connection with
the investment representations or with respect to the facts and representations
supplied by the Holder to counsel to the Company upon which its opinion as to a
proposed transfer shall have been based.

             (d) Transfer. Except as restricted hereby, this Warrant and the
Warrant Shares issued may be transferred by the Holder in whole or in part at
any time or from time to time. Upon surrender of this Warrant to the Company or,
if the Company so instructs the Holder in writing, at the office of its stock
transfer agent, if any, with assignment documentation duly executed and funds
sufficient to pay any transfer tax, and upon compliance with the foregoing
provisions, the Company shall, without charge, execute and deliver a new Warrant
in the name of the assignee named in such instrument of assignment, and this
Warrant shall promptly be canceled. Any attempted assignment, transfer, pledge,
hypothecation or other disposition of this Warrant in any way contrary to the
provisions of this Warrant, or any levy of execution, attachment or other
process attempted upon the Warrant, shall be null and void and without effect.

             (e) Legend and Stop Transfer Orders. Unless the Warrant Shares have
been registered under the Securities Act, upon exercise of any part of the
Warrant and the issuance of any of the Warrant Shares, the Company shall
instruct its transfer agent to enter stop transfer orders with respect to such
shares, and all certificates representing Warrant Shares shall bear on the face
thereof substantially the following legend, insofar as is consistent with
Massachusetts law:

         "The shares of common stock represented by this certificate have not
         been registered under the Securities Act of 1933, as amended, and may
         not be sold, offered for sale, assigned, transferred or otherwise
         disposed of unless registered pursuant to the provisions of that Act or
         an opinion of counsel to the Company is obtained stating that such
         disposition is in compliance with an available exemption from such
         registration."

         5.  Loss, etc. of Warrant. Upon receipt of evidence satisfactory to the
Company of the loss, theft, destruction or mutilation of this Warrant, and of an
unsecured indemnity from the Holder reasonably satisfactory to the Company, if
lost, stolen or destroyed, and upon surrender and cancellation of the Warrant,
if mutilated, the Company shall execute and deliver to the Holder a new Warrant
of like date, tenor and denomination.

         6. (a) Shelf Registration. The Company shall, no later than ninety (90)
days after the date hereof or as soon as is practicable, file a registration
statement on the appropriate form with the U.S. Securities and Exchange
Commission (the "SEC") covering the resale of the Warrant Shares by the Holder
(the "Registration Statement"). The Registration Statement shall register the
Warrant Shares for resale by Holder on a delayed or continuous basis pursuant to
<PAGE>

Rule 415 under the Securities Act of 1933, as amended (the "Act"). The Company
shall use its best efforts cause the Registration Statement to become effective
under the Act as soon as is practicable thereafter following the filing thereof,
and thereafter shall use its best efforts to keep the Registration Statement
continuously effective under the Act in order to permit the prospectus included
therein to be lawfully delivered by Holder until the date on which Holder can
lawfully sell the Warrant Shares pursuant to Rule 144 under the Act (the
"Effectiveness Period"); provided, that, except as provided below with respect
to any Blackout Period (as defined), the Company shall be deemed not to have
used its best efforts to keep the Registration Statement effective during the
requisite period if it voluntarily takes any action or omits to take any action,
the taking or omission of which would result in Holder not being able to offer
and sell the Warrant Shares under the Registration Statement during that period,
unless such action or omission is required by applicable law; provided, further,
that the Company shall not be required to amend or supplement the Registration
Statement, any related prospectus or any document incorporated therein by
reference in the event that, and for a period (a "Blackout Period") not to
exceed, until the end of the Effectiveness Period, an aggregate of sixty (60)
days if (x) an event occurs and is continuing as a result of which the
Registration Statement, any related prospectus or any document incorporated
therein by reference as then amended or supplemented would, in the Company's
good faith judgment, contain an untrue statement of a material fact or omit to
state a material fact necessary in order to make the statements therein, in the
light of the circumstances under which they were made not misleading, and (y)(1)
the Company determines in good faith that the disclosure of such event at such
time would have a material adverse effect on the business, operations or
prospects of the Company or (2) the disclosure otherwise relates to a pending
material business transaction which has not yet been publicly disclosed.
Notwithstanding any other provision of this Warrant or the Loan and Security
Agreement dated as of even date herewith by and between the Company and
BankBoston, N.A. (the "Loan Agreement"), and without limiting or diminishing any
remedy available to the Holder, the failure of the Company to comply with the
provisions of this Section 6(a) shall not constitute a default under the Loan
Agreement.

(b)  Registration Procedure.

         (i) The Company shall cause the Registration Statement and the related
prospectus and any amendments or supplements thereto, as of the effective date
of the Registration Statement, (subject to paragraph (a) above), at all times
during the Effectiveness Period (i) to comply in all material respects with the
applicable requirements of the Act and the rules and regulations of the SEC and
(ii) not to contain any untrue statement of a material fact or omit to state a
material fact required to be stated therein or necessary in order to make the
statements therein, in the light of the circumstances under which they were
made, not misleading.

         (ii)  The Company shall give prompt written notice to Holder:

             (A) on the date(s) when the Registration Statement or any
post-effective amendments thereto have become effective;

             (B) of the issuance by the SEC of any stop order suspending the
effectiveness of the Registration Statement or the initiation or threatening of
any proceedings for that purpose;

             (C) of the receipt by the Company or its legal counsel of any
notification with respect to the suspension of the qualification of the Warrant
Shares for sale in any jurisdiction or the initiation or threatening of any
proceeding for such purpose;

             (D) of the happening of any event that requires the Company to make
changes in the Registration Statement or prospectus in order to make the
statements therein not misleading;
<PAGE>

             (E) of the commencement and termination of any Blackout Period; and

             (F) thirty (30) days prior to the end of the Effectiveness Period.

         (iii) The Company shall use its best efforts to prevent the issuance or
obtain the withdrawal of any order suspending the effectiveness of the
Registration Statement at the earliest possible time.

         (iv) Upon the occurrence of any event contemplated by clauses (ii)(D)
or (E) of this Section 6(b) the Company shall promptly prepare a post-effective
amendment to the Registration Statement or a supplement to the related
prospectus or file any other required document so that, as thereafter delivered
to Holders of the Warrant Shares, the prospectus will not contain an untrue
statement of a material fact or omit to state any material fact necessary to
make the statements therein, in light of the circumstances under which they were
made, not misleading and will contain the current information required by the
Act.

         (v) The Company shall register or qualify the Warrant Shares under the
securities or blue sky laws of such states of the United States as Holder
reasonably requests and do any and all other acts or things necessary or
advisable to enable such exercise in such jurisdictions; provided that the
Company shall not be required to (A) qualify to do business in any jurisdiction
where it is not then so qualified or (B) take any action which would subject it
to general service of process or to taxation in any jurisdiction where it is not
then so subject.

         (vi) The Company shall bear all expenses incurred by it in connection
with the performance of its obligations under this Section 6, other than
underwriting discounts and commissions, if any and fees of Holder's professional
advisors, if any).

         (vii) The Company shall deliver to the Holder, without charge, a
reasonable number of copies of the Registration Statement and any post-effective
amendment thereto, including financial statements and schedules, and all
exhibits (including those, if any, incorporated by reference).

         (viii)  The Company shall cause all Warrant Shares covered by the
Registration Statement to be listed on each securities exchange and/or
inter-dealer quotation system on which similar securities issued by the Company
are then listed.

(c)  Indemnification
<PAGE>

         (i) The Company will indemnify Holder and each of its officers,
directors and partners, and each person controlling such Holder against all
claims, losses, expenses, damages and liabilities (or actions in respect
thereto) arising out of or based on any untrue statement (or alleged untrue
statement) of a material fact contained in the Registration Statement and any
post-effective amendment thereto and any prospectus or other document incident
thereto and any registration or qualification materials filed under any
applicable state securities or blue sky law, or based on any omission (or
alleged omission) to state therein a material fact required to be stated therein
or necessary to make the statement therein not misleading, or any violation or
alleged violation by the Company of the Act, the Securities Exchange Act of
1934, as amended, and the rules and regulations thereunder ("Exchange Act") or
any state securities or blue sky law applicable to the Company or any rule or
regulation promulgated any such state law and relating to action or inaction
required of the Company in connection with any such registration, qualification
or compliance, and will reimburse Holder, each of its officers, directors and
partners, and each person controlling such Holder, within a reasonable amount of
time after incurred for any reasonable legal and any other expenses incurred in
connection with investigating, defending or settling any such claim, loss,
damage, liability or action; provided, however, that the indemnity agreement
contained in this Section 6(c)(i)) shall not apply to amounts paid in settlement
of any such claim, loss, damage, liability, or action if such settlement is
effected without the consent of the Company (which consent shall not be
unreasonably withheld or delayed); and provided further, that the Company will
not be liable in any such case to the extent that any such claim, loss, damage
or liability arises out of or is based on any untrue statement or omission based
upon written information furnished to the Company by an instrument duly executed
by Holder r specifically for use therein.

         (ii) Holder will indemnify the Company, each of its directors and
officers, and each person who controls the Company within the meaning of the
Act, against all claims, losses, expenses, damages and liabilities (or actions
in respect thereof) arising out of or based on any untrue statement (or alleged
untrue statement) of a material fact contained in the Registration Statement and
any post-effective amendment thereto and any prospectus or other document
incident thereto and any registration or qualification materials filed under any
applicable state securities or blue sky law, or any omission (or alleged
omission) to state therein a material fact required to be stated therein or
necessary to make the statements therein not misleading, and will reimburse the
Company, such directors, officers, partners, and persons for any reasonable
legal or any other expenses incurred in connection with investigating, defending
or settling any such claim, loss, damage, liability or action, in each case to
the extent, but only to the extent, that such untrue statement (or alleged
untrue statement) or omission (or alleged omission) is made in such registration
statement, prospectus, or other document in reliance upon and in conformity with
written information furnished to the Company by an instrument duly executed by
Holder specifically for use therein; provided, however, that the indemnity
agreement contained in this Section 6(c)(ii) shall not apply to amounts paid in
settlement of any such claim, loss, damage, liability or action if such
settlement is effected without the consent of Holder, (which consent shall not
be unreasonably withheld or delayed); and provided further, that the total
amount for which Holder shall be liable under this Section 6(c)(ii)) shall not
in any event exceed the aggregate proceeds received by Holder from the sale of
Warrant Shares pursuant to such registration.

         (iii) Each party entitled to indemnification under this Section 6(c)
(the "Indemnified Party") shall give notice to the party required to provide
indemnification (the "Indemnifying Party") promptly after such Indemnified Party
has actual knowledge of any claim as to which indemnity may be sought, and shall
permit the Indemnifying Party to assume the defense of any such claim or any
litigation resulting therefrom; provided that counsel for the Indemnifying
Party, who shall conduct the defense of such claim or litigation, shall be
approved by the Indemnified Party (whose approval shall not be unreasonably
withheld), and the Indemnified Party may participate in such defense at such
party's expense; and provided further, that the
<PAGE>

failure of any Indemnified Party to give notice as provided herein shall not
relieve the Indemnifying Party of its obligations hereunder, unless such failure
resulted in prejudice to the Indemnifying Party; and provided further, that an
Indemnified Party (together with all other Indemnified Parties which may be
represented without conflict by one counsel) shall have the right to retain one
separate counsel, with the fees and expenses to be paid by the Indemnifying
Party, if representation of such Indemnified Party by the counsel retained by
the Indemnifying Party would be inappropriate due to actual or potential
differing interests between such Indemnified Party and any other party
represented by such counsel in such proceeding. No Indemnifying Party, in the
defense of any such claim or litigation, shall, except with the consent of each
Indemnified Party, consent to entry of any judgment or enter into any settlement
which does not include as an unconditional term thereof the giving by the
claimant or plaintiff to such Indemnified Party of a release from all liability
in respect to such claim or litigation.

(d) Rule 144 Reporting. With a view to making available to Holder the benefits
of certain rules and regulations of the SEC which may permit the sale of the
Warrant Shares to the public without registration, the Company agrees at all
times to:

         (i)make and keep public information available, as those terms are
understood and defined in SEC Rule 144;

         (ii) file with the SEC in a timely manner all reports and other
documents required of the Company under the Act and the Exchange Act; and

         (iii) so long as Holder owns the Warrant and/or any Warrant Shares, to
furnish to Holder forthwith upon request a written statement by the Company as
to its compliance with the reporting requirements of said Rule 144 and of the
Act and the Exchange Act, a copy of the most recent annual or quarterly report
of the Company, and such other reports and documents so filed by the Company as
Holder may reasonably request in complying with any rule or regulation of the
SEC allowing Holder to sell any such securities without registration.

7.       Regulatory Restrictions

         (a)Definitions. For the purpose of this Section 7, the following terms
shall have the following respective meanings:

         "Affiliate" shall mean any Person directly or indirectly controlling,
controlled by or under direct or indirect common control with FSC (or other
specified Person).

         "Person" shall mean an individual, partnership, corporation, limited
liability company, association, trust, joint venture, unincorporated
organization and any government, governmental department or agency or any
political subdivision thereof.

         "Small Business Act" shall mean the Small Business Investment Act of
1958, as amended, or any successor federal statute, and the rules and
regulations of the Small Business Administration thereunder, as the same shall
be in effect from time to time.

         (b)No Person which is a bank holding company or a subsidiary of a bank
holding company (a "Bank Affiliate") as defined in the Bank Holding Company Act
of 1956, as amended, or other applicable banking laws of the United States of
America and the rules and regulations promulgated thereunder (the "Bank Holding
Company Act") shall acquire Common Stock, if, after giving effect to such
acquisition, the Bank Affiliate, together with its Affiliates, together with its
Affiliates, would own more than five percent (5%) of the outstanding voting
securities of the Company. Notwithstanding the foregoing, shares of Common Stock
may otherwise be acquired or held by FSC or any Affiliate of FSC which is a
Small Business Investment Company consistent with and subject to the limitations
<PAGE>

contained in the Small Business Act and, to the extent not inconsistent with the
Bank Holding Company Act, shares of Common Stock may be acquired in the event
that:

         (i) the Company shall vote to merge or consolidate with or into any
other Person and after giving effect to such merger or consolidation FSC or
Affiliate of FSC would not own more than five percent (5%) of the outstanding
voting securities of the surviving corporation; or

         (ii) the Registration Statement is effective.

8. Representations and Warranties of the Company. The Company represents and
warrants to the Holder as follows:

         (a) Organization and Good Standing. The Company is duly organized and
existing as a corporation in good standing ion the State of Delaware and is duly
qualified as a foreign corporation and authorized to do business in all other
jurisdictions in which the nature of its business or property makes such
qualification necessary. The Company has the corporate power to own its
properties and to carry on its business as now conducted or as proposed to be
conducted.

         (b) Authorization. The execution, delivery and performance by the
Company of this Warrant (including without limitation the provisions of Section
6 above) and the issuance and sale by the Company of the Warrant Shares
hereunder (a) are within the Company's corporate power and authority, (b) have
been duly authorized by all necessary corporate action and (c) do not conflict
with or result in any breach of any provision of, or the creation of any lien
upon any of the property of the Company or any law, regulation, order, judgment,
writ, injunction, license, permit, agreement or instrument applicable to the
Company.

         (c) The execution and delivery of this Warrant and the issuance and
sale by the Company of the Warrant Shares hereunder will result in legally
binding obligations of the Company enforceable against the Company in accordance
with the terms hereof except to the extent that (a) such enforceability is
limited by bankruptcy, insolvency, reorganization, moratorium or other laws
relating to or affecting generally the enforcement of creditors' rights and (b)
the availability of the remedy of specific performance or in injunctive or other
equitable relief is subject to the discretion of the court before which any
proceeding therefore may be brought.

      7. Warrant Holder Not Shareholder. Except as otherwise provided herein,
this Warrant does not confer upon the Holder any right to vote or to consent to
or receive notice as a shareholder of the Company, as such, in respect of any
matters whatsoever, or any other rights or liabilities as a shareholder, prior
to the exercise hereof.

      8. Communication. No notice or other communication under this Warrant
shall be effective unless the same is in writing and is mailed by certified
mail, return receipt requested, overnight delivery service, or sent by
facsimile, addressed to:

         (a) the Company at 1000 Winter Street, Waltham, Massachusetts 02451, or
such other address as the Company has designated in writing to the Holder, with
a copy to David A. Broadwin, Esq., Foley, Hoag & Eliot LLP, One Post Office
Square, Boston, Massachusetts 02109, or

         (b) the Holder at 100 Federal Street, Boston, MA 02110, or such other
address as the Holder has designated in writing to the Company, with a copy to
David S. Berman, Esq., Riemer & Braunstein LLP, Three Center Plaza, Boston, MA
02108.

         Any notice given hereunder shall be effective upon the earlier of (i)
receipt, or (ii) a date three days from the date of mailing.

         9. Headings. The headings of this Warrant have been inserted as a
matter of convenience and shall not affect the construction hereof
<PAGE>

         10.Applicable Law. This Warrant shall be governed by and construed in
accordance with the law of The Commonwealth of Massachusetts without giving
effect to the principles of conflicts of law thereof.

                                      * * *

<PAGE>

         IN WITNESS WHEREOF, DYNAGEN, INC. has caused this Warrant to be
executed and delivered on the date specified above by the duly authorized
representative of the Company.

ATTEST:                                     DYNAGEN, INC.

                                            By: /s/ Dhananjay Wadekar
---------------------------                     -----------------------
                                                Dhananjay Wadekar
                                                Executive Vice President

                                  SUBSCRIPTION

         The undersigned, _______________________________________, pursuant to
the provisions of the foregoing Warrant, hereby agrees to subscribe for the
purchase of ________ shares of the Common Stock of DYNAGEN, INC. covered by said
Warrant, and makes payment therefor in full at the price per share provided by
said Warrant.

Dated:____________________________  Signature:_________________________________

Address:__________________________

                       ==================================

                                   ASSIGNMENT

         FOR VALUE RECEIVED ___________________________ hereby sells, assigns
and transfers unto ______________________________ the foregoing Warrant and all
rights evidenced thereby, and does irrevocably constitute and appoint
_____________________, attorney, to transfer said Warrant on the books of
DYNAGEN, INC..

Dated:____________________________  Signature:_________________________________

Address:__________________________

                       ==================================

                               PARTIAL ASSIGNMENT

FOR VALUE RECEIVED _________________________ hereby sells, assigns and transfers
unto ___________________________ the right to purchase _________ shares of the
Common Stock of DYNAGEN, INC. by the foregoing Warrant, and a proportionate part
of said Warrant and the rights evidenced hereby, and does irrevocably constitute
and appoint ___________________________________, attorney, to transfer that part
of said Warrant on the books of DYNAGEN, INC.

Dated:____________________________  Signature:_________________________________

Address:__________________________

<PAGE>

                              NET ISSUANCE ELECTION

         The undersigned, _______________________________, pursuant to the
provisions of the foregoing Warrant, hereby tenders the right to purchase _____
shares of the Common Stock of DYNAGEN, INC., and a proportionate part of said
Warrant and the rights evidenced thereby, in exchange for a number of shares of
said Common Stock to be computed in accordance with the provisions of Section 1
(b) of said Warrant.

Dated:____________________________  Signature:_________________________________

Address:__________________________

                       ==================================EXHIBIT 10.82
                                                                   -------------

                             AMENDMENT AND AGREEMENT

         THIS AMENDMENT AND AGREEMENT (this "Agreement"), dated November 30,
1999 by and between DynaGen, Inc., a Delaware corporation ("Borrower"), Finova
Mezzanine Capital Inc. f/k/a Sirrom Capital Corporation, a Tennessee corporation
("Sirrom") and Argosy Investment Partners, L.P., a Pennsylvania limited
partnership ("Argosy") (Sirrom and Argosy are sometimes referred to herein
collectively as the "Investors").

                                   WITNESSETH:

         WHEREAS, pursuant to a Loan Agreement dated June 18, 1997 by and
between Borrower and the Investors (the "Loan Agreement"), the Investors have
made loans to Borrower in the original principal amount of $3,000,000 (the
"Loan");

         WHEREAS, the Loan is evidenced by a Secured Promissory Note dated as of
June 18, 1997 in the principal amount of $2,000,000, made and executed by
Borrower, payable to the order of Sirrom (herein referred to, together with any
extensions, modifications, renewals and/or replacements thereof, as the "Sirrom
Note") and a Secured Promissory Note dated as of June 18, 1997 in the principal
amount of $1,000,000, made and executed by Borrower, payable to the order of
Argosy (herein referred to, together with any extensions, modifications,
renewals and/or replacements thereof, as the "Argosy Note") (the Sirrom Note and
the Argosy Note are sometimes referred to herein collectively as the "Notes");

         WHEREAS, the parties desire to make certain agreements relating to the
Loan and the Notes, as well as other agreements, as hereinafter set forth:

         NOW THEREFORE, in consideration of the foregoing, and for other good
and valuable consideration the receipt and sufficiency of which is hereby
acknowledged, Borrower agrees as follows:

         1. Acquisition of Series L Preferred Stock. Sirrom hereby elects to
surrender and cancel $500,000 in principal amount of the Sirrom Note, and Argosy
hereby elects to surrender and cancel $250,000 in principal amount of the Argosy
Note, in exchange for shares of Series I Preferred Stock, $0.01 par value per
share, of the Company ("Series L Preferred Stock"). In consideration thereof,
the Company hereby agrees to issue to Sirrom 6,667 shares of Series L Preferred
Stock and 3,333 shares of Series L Preferred Stock to Argosy. Each of Sirrom and
Argosy hereby tenders to the Company the portion of its Note to be canceled in
payment of the purchase price for the Series L Preferred Stock. The portion of
the Note surrendered and the debt evidenced thereby shall be canceled on the
books of the Company as of the date hereof.
<PAGE>

         In connection with its acquisition of shares of Series L Preferred
Stock, each Investor represents and warrants to the Company that it is acquiring
the Series L Preferred Stock for its own account for investment only and not
with a present view towards the public sale or distribution thereof and must
bear the risk of the investment indefinitely, that it is an "accredited
investor" as defined under the Securities Act, that it has reviewed all of the
Company's periodic and other filings with the Securities and Exchange Commission
including, without limitation, under the heading "Certain Factors That May
Affect Future Results" in such filings, that it has been given the opportunity
to ask questions of the Company, that it understands that the investment in
Series L Preferred Stock involves a HIGH DEGREE OF RISK and that the Company's
independent auditors have included an explanatory paragraph in their opinion on
the Company's financial statements expressing substantial doubt about the
Company's ability to continue as a going concern.

         The certificates for the Series L Preferred Stock and any shares of
Common Stock issued upon conversion thereof may bear a restrictive legend in
substantially the following form (and a stop-transfer order may be placed
against transfer of the certificates for such securities):

         The securities represented by this certificate have not been registered
         under the Securities Act of 1933, as amended. The securities have been
         acquired for investment and may not be sold, transferred or assigned in
         the absence of an effective registration statement for the securities
         under said Act, or an opinion of counsel, in form, substance and scope
         customary for opinions of counsel in comparable transactions, that
         registration is not required under said Act or unless the Company is
         provided with reasonable assurances that the securities were sold
         pursuant to Rule 144 under said Act.

         2. Conversion of Remainder of Notes. The Loan Agreement and the Notes
are hereby amended in all necessary respects to provide as follows:

         The Holder of a Note shall be entitled, at its option, subject to the
following provisions of this Section, to convert all or a portion of the
principal and accrued interest on the Note into shares of common stock of the
Company, $0.01 par value per share ("Common Stock") at any time until the
Maturity Date, at a conversion price for each share of Common Stock (the
"Conversion Rate") equal to the Current Market Price (as defined below).

         For purposes of this Agreement, the following terms have the meanings
indicated below:

             (i) "Market Price of the Common Stock" means the closing bid price
of the Common Stock for the period indicated in the relevant provision, as
reported by Bloomberg, LP or, if not so reported, as reported on the
over-the-counter market.

             (ii) "Current Market Price" means the average Market Price of the
Common Stock for the three (3) trading days ending on the trading day
immediately before the relevant Conversion Date (as defined below).

         To convert all or part of the Notes, the holder shall surrender the
Note to be converted to the Company accompanied or preceded by facsimile or
other delivery to the Company of written notice ("Notice of Conversion")
executed by the holder evidencing the holder's irrevocable election to convert
the Note or a specified portion thereof as specified in the notice and
accompanied, if required by the Company, by proper assignment thereof in blank.
Interest accrued or accruing under the Note from the date hereof to the
Conversion Date shall, at the option of the Company, be paid upon conversion in
cash or Common Stock at the Conversion Rate applicable to such conversion (this
sentence applies only to interest accrued over a partial interest period ending
on a Conversion Date and does not render any other ordinary interest payments as
being payable in stock). No fractional shares of Common Stock or scrip
representing fractions of shares will be issued on conversion, but the number of
shares issuable shall be rounded to the nearest whole share. The date on which
the Notice of Conversion is received by the Company shall be the "Conversion
Date," provided that the Holder shall deliver to the Company the original Note
being converted
<PAGE>

within five (5) business days thereafter (and if not so delivered with such
time, the Conversion Date shall be the date on which the later of the Notice of
Conversion and the original Debentures being converted is received by the
Company). Facsimile delivery of the Notice of Conversion shall be accepted by
the Company at facsimile number (781) 890-0118, Attn: Dhananjay Wadekar. The
Company shall deliver certificates representing Common Stock issuable upon
conversion ("Conversion Shares") not later than three (3) business days from the
Conversion Date.

         Each Investor agrees not to convert any part of the Notes or sell any
Conversion Shares before January 1, 2001. Each Investor agrees, beginning
January 1, 2001, not to sell in any calendar quarter, more than the number of
Conversion Shares as are issued upon conversion of $250,000 of principal amount
of the Investor's Note. This restriction will be in addition to any restrictions
on resale or transfer of the shares of Common Stock issuable upon conversion of
the Note as may be imposed by law.

         3. Events of Default Under Note. The Company agrees that any of the
following will constitute a covenant default under Section 5.1 of the Loan
Agreement, provided that no such event will constitute a default unless and
until the affected Investor notifies the Company of its election to treat such
event as an event of default and the Company does not cure such default within
thirty (30) days after receiving such notice:

         (a) An Investor is unable to sell shares of common stock upon
conversion of the Series L Preferred Stock in an amount equal to the Investor's
"Maximum Conversion Value," as defined in the terms of the Series L Preferred
Stock, solely because of the Company's failure to obtain effectiveness of the
registration statement referred to in paragraph 5.

         (b) An Investor exercises the put feature of the Stock Purchase
Warrants dated June 18, 1997, and the Company fails to pay the amount due on
exercise of the put option within sixty (60) days of the due date.

         In the case of a default under (a) or (b) above, or upon the occurrence
of any other Event of Default under the Loan Agreement (it being acknowledged
that a defaulted payment shall be considered an Event of Default for this
purpose even though the Investors may be prohibited from making demand for
monetary payment thereof pursuant to an agreement with the Company's senior
secured creditor) then the Investor with respect to whom the Company has
defaulted will have the right to convert the remaining portion of the Investor's
Note into shares of Common Stock in accordance with the terms of the Note, and
will have the right sell such shares of Common Stock in any amount in and any
manner allowed by law, notwithstanding any provision of Section 2 above or of
any other agreement between the Investor and the Company. An Investor wishing to
exercise this right on account of a default other than for the nonpayment of
money shall give the Company at least ten (10) days prior written notice of the
Investor's intention to convert; provided, that the Company shall be entitled to
cure such defaults within such ten (10) day period, and if the Company does cure
the default the Investor shall not be entitled to exercise the right of
conversion with respect to such default. This special notice, if applicable,
must be given after the event or condition causing the default has become an
"Event of Default" under the Loan Agreement (i.e., after all notice and cure
requirements of the Loan Agreement have been satisfied).

         4. Issuance of Warrant. The Company hereby agrees to issue to Sirrom a
warrant substantially in the form of Exhibit A hereto to purchase 266,667 shares
of Common Stock at a purchase price per share equal to the Market Price of the
Common Stock as of the date hereof. The Company hereby agrees to issue to Argosy
a warrant substantially in the form of Exhibit A to purchase 133,333 shares of
Common Stock at a purchase price per share equal to the Market Price of the
Common Stock as of the date hereof.

         5. Registration. The Company shall prepare and file with the SEC at its
own a registration statement on form S-3 or Form SB-2 (a "Registration
Statement") registering for resale by the Investors a sufficient number of
shares of Common Stock for the Investors to sell (a) shares of Common Stock
issuable upon conversion of Series L Preferred Stock and (b) shares of Common
Stock issuable upon exercise of the common stock purchase warrants issued to
Sirrom and Argosy dated August 31, 1999. The Company will use its reasonable
best efforts to cause such Registration Statement to be declared effective no
later than February 28, 2000 and to keep the registration statement in effect
for a sufficient time to allow the Investors to sell shares of Common Stock
yielding proceeds equal to each Investor's "Maximum Conversion Value" as defined
in the Certificate of Designations, Preferences and Rights of Series L Preferred
Stock. In the event of a default under Section 3(a) or 3(b) above, or
<PAGE>

upon the occurrence of any other Event of Default under the Loan Agreement, at
the request of an Investor that has established its right to convert shares of
Common Stock under Section 3 above the Company shall prepare and file a
Registration Statement registering for resale by the Investor shares of Common
Stock issued or issuable to the Investor upon conversion of the Notes, and shall
use its reasonable best efforts to cause such Registration Statement to be
declared effective as soon as practicable thereafter.

         If at any time or from time to time after the date of effectiveness of
the Registration Statement, the Company notifies the Investors in writing of the
existence of a "Potential Material Event," (as hereinafter defined) the
Investors shall not offer or sell any securities under the Registration
Statement or engage in any other transaction utilizing, involving or relating to
the Registration Statement, from the time of the giving of notice with respect
to a Potential Material Event until such Investor receives written notice from
the Company that such Potential Material Event either has been disclosed to the
public or no longer constitutes a Potential Material Event. A "Potential
Material Event" means any of the following: (i) the possession by the Company of
material information not ripe for disclosure in a registration statement, which
shall be evidenced by determinations in good faith by the Board of Directors of
the Company that disclosure of such information in the registration statement
would be detrimental to the business and affairs of the Company; or (ii) any
material engagement or activity by the Company which would, in the good faith
determination of the Board of Directors of the Company, be adversely affected by
disclosure in a registration statement at such time, which determination shall
be accompanied by a good faith determination by the Board of Directors of the
Company that the registration statement would be materially misleading absent
the inclusion of such information.

         Each Investor agrees to cooperate with the Company as reasonably
requested by the Company in connection with the preparation and filing of the
Registration Statement hereunder, including furnishing to the Company such
information regarding itself, the registrable securities held by it, and its
intended method of disposition of the registrable securities held by it.

         6. Intercreditor Agreement; Pledge of Superior Stock. In connection
with this Amendment and Agreement, each Investor is simultaneously entering into
that certain Intercreditor Agreement dated as of even date herewith by and among
the Investors and BankBoston, N.A. (the "Bank"), pursuant to which, among other
things, each Investor at the Bank's request is subordinating its right, title
and interest in that certain pledge of the shares of stock of Superior
Pharmaceutical Company and tenders such shares of stock herewith to the Company
for delivery to the Bank, whose possession thereof shall perfect the senior
security interest of the Bank and the junior security interest of the Company.
The Company shall instruct the Bank to return the pledged certificate(s) to
Sirrom as agent for the Investors if the Bank wishes to release its security
interest in such shares due to its having received payment in full or otherwise.

         7. Loan Agreement. As amended hereby, the Loan Agreement and each of
the Notes shall remain in effect hereafter. Each Investor hereby, by executing
and delivering this Amendment and Agreement, confirms that (i) it has
voluntarily refrained from exercising its remedies in connection with any past
obligations under the Loan, the Loan Agreement or the applicable Note from June
18, 1997 to the date hereof, (ii) it is not aware of any default thereunder that
has not been cured, other than (i) certain payments being past due for October
and November of 1999, which payments the Company agrees to pay, and the
Investors agree to accept, within five (5) days of the date hereof with no
resulting acceleration, assessment of default rate or other penalty or
consequence, and (ii) certain financial reports being past due, which the
Investors agree to accept on or before December 10, 1999 with no resulting
acceleration, assessment of default rate or other penalty or consequence. The
Company acknowledges and agrees that the Investors' past voluntary forbearance
does not evidence or create any obligation on their part to similarly forbear
upon the occurrence of any future Event of Default. Capitalized terms used but
not defined herein shall have the meanings given them in the Loan Agreement.

         8. Additional Agreements. The Company agrees (i) to pay the fees and
expenses of counsel to Investors in an amount not exceeding $30,000 within five
(5) days of receipt of an invoice therefor generally summarizing the basis for
the charges, and (ii) to cause to be delivered to Sirrom as Agent for the
Investors within five (5) business days following the date hereof an opinion
letter of the Company's counsel in customary form relating to this Agreement and
the transactions contemplated hereby. The Company further agrees to deliver to
the Investors, concurrently with delivery to BankBoston, N.A., all financial
reports and information required under
<PAGE>

Sections 10.5, 10.6 and 10.7 of the Loan and Security Agreement of this date (or
of approximately this date) between BankBoston, N.A. and the Company, as such
requirements may be amended from time to time.

Source: [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00006-of-00352.parquet"}, [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00006-of-00352.parquet"}]]