MACROCHEM CORP
8-K, EX-10, 2000-10-31
PHARMACEUTICAL PREPARATIONS
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NEITHER THESE  SECURITIES  NOR THE  SECURITIES  INTO WHICH THESE  SECURITIES ARE
EXERCISABLE HAVE BEEN REGISTERED WITH THE SECURITIES AND EXCHANGE  COMMISSION OR
THE  SECURITIES  COMMISSION  OF ANY STATE IN  RELIANCE  UPON AN  EXEMPTION  FROM
REGISTRATION  UNDER THE  SECURITIES  ACT OF 1933,  AS AMENDED  (THE  "SECURITIES
ACT"),  AND,  ACCORDINGLY,  MAY NOT BE OFFERED  OR SOLD  EXCEPT  PURSUANT  TO AN
EFFECTIVE  REGISTRATION  STATEMENT  UNDER THE  SECURITIES  ACT OR PURSUANT TO AN
AVAILABLE  EXEMPTION  FROM  THE  REGISTRATION  REQUIREMENTS  THEREUNDER  AND  IN
COMPLIANCE WITH APPLICABLE STATE SECURITIES OR BLUE SKY LAWS.


                              MACROCHEM CORPORATION

                                     WARRANT

Warrant No. 1                                            Dated: October 23, 2000


         MacroChem Corporation,  a Delaware corporation (the "COMPANY"),  hereby
certifies  that,  for value  received,  _______________________________,  or its
registered  assigns  ("HOLDER"),  is  entitled,  subject  to the terms set forth
below,  to purchase from the Company the total number of shares of common stock,
$.01 par value per share (the "COMMON STOCK"),  of the Company (each such share,
a "Warrant Share" and all such shares, the "WARRANT SHARES") calculated pursuant
to Section 3 of this Warrant  (subject to adjustment  for certain  events as set
forth  herein) at an exercise  price equal to $.01 per share (as  adjusted  from
time to time as provided in Section 8, the "EXERCISE  PRICE"),  at the times set
forth herein  through and including  the 240th day following the Effective  Date
(as defined in Exhibit A) (the "Expiration  Date"), and subject to the following
terms and  conditions  (certain  terms  used  herein  are  defined  in EXHIBIT A
attached hereto).

         1.  REGISTRATION  OF WARRANT.  The Company shall register this Warrant,
upon records to be  maintained  by the Company for that  purpose  (the  "WARRANT
REGISTER"),  in the name of the  record  Holder  hereof  from time to time.  The
Company may deem and treat the registered Holder of this Warrant as the absolute
owner hereof for the purpose of any exercise  hereof or any  distribution to the
Holder,  and for all other  purposes,  and the Company  shall not be affected by
notice to the contrary.

         2.  REGISTRATION OF TRANSFERS.  The Company shall register the transfer
of any portion of this Warrant in the Warrant  Register,  upon surrender of this
Warrant,  with the Form of Assignment attached hereto duly completed and signed,
to the Transfer Agent or to the Company at the address  specified in Section 13.
Upon any such registration or transfer,  a new warrant to purchase Common Stock,
in  substantially  the  form of this  Warrant  (any  such  new  warrant,  a "NEW
WARRANT"), evidencing the portion of this Warrant so transferred shall be issued
to the  transferee and a New Warrant  evidencing  the remaining  portion of this
Warrant not so transferred,  if any, shall be issued to the transferring Holder.
The acceptance of the New Warrant by the transferee  thereof shall be deemed the
acceptance of such  transferee of all of the rights and  obligations of a holder
of a Warrant.

         3.       DURATION, VESTING AND EXERCISE.

                  (a) The  vesting  of the  Warrant  Shares  which the Holder is
permitted to acquire pursuant to this Warrant shall occur on the dates set forth
below.  On each such date,  this Warrant  shall vest on a cumulative  basis with
respect to a number of Warrant Shares calculated pursuant to Section 3(b) below.
Only the Warrant  Shares that have vested may be acquired  upon exercise of this
Warrant.

                      (i) The first  vesting  date (the  "FIRST  VESTING  DATE")
shall be the twenty-first Business Day after the Effective Date, PROVIDED, that,
at the Holder's option,  by written notice delivered to the Company prior to the
start of the vesting period, the First Vesting Date may be delayed for up to 240
days following the Effective Date;

                      (ii) The second  vesting date (the "SECOND  VESTING DATE")
shall be the 20th Trading Day following the First Vesting Date,  PROVIDED,  that
at the Holder's option,  by written notice delivered to the Company prior to the
start of the vesting  period,  the Second  Vesting Date may be delayed for up to
120 days  after the First  Vesting  Date but in no event to a date more than 240
days following the Effective Date;

                      (iii) The third  vesting date (the "THIRD  VESTING  DATE")
shall be the 20th Trading Day following the Second Vesting Date, PROVIDED,  that
at the Holder's option,  by written notice delivered to the Company prior to the
start of the vesting period, the Third Vesting Date may be delayed for up to 120
days after the Second  Vesting Date but in no event to a date more than 240 days
following the Effective Date; and

                      (iv) The fourth  vesting date (the "FOURTH  VESTING DATE")
shall be the 20th Trading Day following the Third Vesting Date,  PROVIDED,  that
at the Holder's option,  by written notice delivered to the Company prior to the
start of the vesting  period,  the Fourth  Vesting Date may be delayed for up to
120 days  after the Third  Vesting  Date but in no event to a date more than 240
days following the Effective Date.

                  Each of the First Vesting  Date,  Second  Vesting Date,  Third
Vesting  Date and Fourth  Vesting Date shall be referred to herein as a "Vesting
Date."

                  Notwithstanding  the  foregoing,  if on or after the Effective
Date the Per  Share  Market  Value is less  than  $2.00  for more  than  fifteen
consecutive  Trading Days, upon written notice by the Company to the Holder, any
Vesting Date or Vesting Dates otherwise delayed by the Holder shall be deemed to
occur on the next Trading Day after delivery of such notice.

                  (b) On each Vesting  Date,  this Warrant shall vest and become
exercisable  with  respect  to  the  number  of  Warrant  Shares  calculated  in
accordance with the following formula:


    (APPLICABLE SHARE NUMBER) X [(PURCHASE PRICE/0.90) - (ADJUSTMENT PRICE)]
    ------------------------------------------------------------------------
                                Adjustment Price

                  If the number  calculated  in  accordance  with the  foregoing
formula is zero or a negative number, no Warrant Shares shall vest hereunder for
such  Vesting  Date and the Holder shall not be obligated to transfer any shares
of Common  Stock to the  Company.  In  addition,  the number of  Warrant  Shares
exercisable hereunder which shall have previously vested will not decrease.

                  (c) Notwithstanding  anything herein to the contrary including
Sections  3(d) and 3(e),  if, after the Effective  Date,  the average of the Per
Share Market Values (as defined in EXHIBIT A) for 20 consecutive Trading Days is
greater than 125% of the Purchase  Price (as defined in EXHIBIT A) (which number
shall be subject to equitable  adjustment for stock splits,  recombinations  and
similar  events),  this Warrant  shall not vest with  respect to any  additional
Warrant  Shares  at any time  thereafter  but will  remain  in  effect as to any
Warrant Shares which have vested prior thereto.

                  (d) Notwithstanding anything herein to the contrary, if on any
Vesting Date the  Adjustment  Price shall be less than 70% of the Purchase Price
(the "FLOOR PRICE"), then on such Vesting Date: (i) this Warrant shall vest with
respect to the Warrant Shares pursuant to Section 3(a) and (b) hereof, provided,
that the  Adjustment  Price  pursuant to the  formula set forth in Section  3(b)
shall,  exclusively for purposes of this Section 3(d)(i),  equal the Floor Price
(such number of Warrant shares,  the "Initial  Shares") and (ii) with respect to
the Warrant  Shares whose vesting would result in a vesting of Warrant Shares in
excess of the  Initial  shares,  the  Company  will have the  option to elect by
written  notice  (the  "Notice")  delivered  to the Holder no later than  twenty
Trading  Days  prior to the  applicable  Vesting  Date to either  (x) pay to the
Holder,  in cash (the "CASH  PAYMENT"),  within three (3) Trading Days after the
Vesting  Date at issue (the  "DELIVERY  DATE"),  an amount  equal to the product
obtained by multiplying (A) the Adjustment Price and (B) the difference  between
the number of Warrant Shares which would have  otherwise  vested on such Vesting
Date pursuant to Section 3(a) and (b) hereof and the Initial Shares (such number
of Warrant shares,  the  "Subsequent  Shares") or (y) allow this Warrant to vest
with respect to the Subsequent Shares.

                  (e) Notwithstanding  the foregoing  provisions of this Section
3, at any time during the period  between the  Closing  Date and the  Expiration
Date,  within ten Trading Days  following the occurrence of any of the following
events  (each,  an  "EVENT"),  the Holder  shall  have the  option to elect,  by
providing the Company with a notice (an "EVENT  VESTING  NOTICE"),  to have this
Warrant  vest with  respect to those  Warrant  Shares  that have not yet already
vested (the "VESTED WARRANT  SHARES"),  PROVIDED,  that the Event Vesting Notice
may also  require the  Company to redeem all or a portion of the Vested  Warrant
Shares at the Mandatory Redemption Price (as defined in EXHIBIT A);

                      (i) Upon the occurrence of any of (i) an acquisition after
the date hereof by an  individual  or legal  entity or "group" (as  described in
Rule  13d-5(b)(1)  promulgated  under the  Securities  Exchange Act of 1934,  as
amended (the  "EXCHANGE  ACT")) of in excess of 1/3 of the voting  securities of
the  Company,  (ii) the  merger  of the  Company  with or into  another  entity,
consolidation or sale of all or  substantially  all of the assets of the Company
in one or a series of related transactions, unless following such transaction or
series of  transactions,  the holders of the Company's  securities  prior to the
first such  transaction  continue to hold at least 2/3 of the  securities of the
surviving  entity or  acquirer  of such  assets or (iii)  the  execution  by the
Company of an agreement to which the Company is a party or by which it is bound,
providing for any of the events set forth above in (i), (ii) or (iii);

                      (ii) Immediately prior to an assignment by the Company for
the benefit of creditors or  commencement  of a voluntary case under Title 11 of
the  United  States  Code,  or an  entering  into of an order  for  relief in an
involuntary  case under Title 11 of the United  States Code,  or adoption by the
Company of a plan of liquidation or dissolution;

                      (iii)  Five  (5)  Business  Days  prior  to  the  proposed
consummation  with  respect to the  Company  of a "Rule  13e-3  transaction"  as
defined in Rule 13e-3 under the  Exchange  Act (or, if  necessary,  such earlier
date as the Company  shall  determine  in good faith to be required in order for
the Holder to be able to participate in such transaction),  it being agreed that
the Holder will  receive  actual  notice of the 13e-3  Statement  filed with the
Commission;

                      (iv) For any three (3) consecutive Trading Days commencing
on or after the date of issuance of this Warrant,  there shall be no closing bid
price  on the  Common  Stock  on the  Nasdaq  (as  defined  in  EXHIBIT  A) or a
Subsequent Market (as defined in EXHIBIT A);

                      (v) The  Common  Stock  fails to be listed  or quoted  for
trading  on the  Nasdaq  or a  Subsequent  Market  or for a period  of three (3)
consecutive Trading Days;

                      (vi) After the  Effective  Date,  a holder of  Registrable
Securities (as defined in the Registration Rights Agreement) is not permitted to
sell Registrable  Securities under the Underlying Shares Registration  Statement
(as defined in EXHIBIT A) for any reason for five (5) or more  consecutive  days
other  than as a result  of  black-out  periods  specifically  permitted  by the
Registration Rights Agreement;

                      (vii) The Underlying Shares  Registration  Statement shall
not be  declared  effective  by the  Commission  on or  prior to the  180th  day
following the Closing Date; or

                      (viii)  The  Company  shall fail for any reason to deliver
certificates  to a Holder  prior to the  seventh  Business  Day  after a Date of
Exercise pursuant to and in accordance with Section 4(a);

                      (ix) The  Company  shall  fail or  default  in the  timely
performance of any material obligation under the Transaction  Documents and such
failure or default shall continue uncured for a period of five (5) Business Days
after the date on which  notice of such failure or default is first given to the
Company (it being  understood  that no prior notice need be provided in the case
of defaults which cannot reasonably be cured within a 5-day period).

                  In the event the Holder delivers an Event Vesting Notice, this
Warrant  shall vest with respect to the number of Warrant  Shares  calculated in
accordance  with the  formula  set forth in  Section  3(b),  PROVIDED,  that for
purposes of such  calculation,  (A) the Adjustment Price shall be deemed to mean
the average of the Per Share Market Values (which need not occur on  consecutive
Trading  Days) for any 10 Trading  Days during the 40  consecutive  Trading Days
preceding  the  date  of the  Event,  as  selected  by the  Holder  and  (B) the
Applicable  Share Number shall be deemed to mean 100% of the number of shares of
Common Stock purchased by the Holder pursuant to the Purchase Agreement.  If the
Holder  shall have  elected to require the Company to redeem the Vested  Warrant
Shares  pursuant  to the terms  hereof,  the  Company  shall  pay the  Mandatory
Redemption  Price no later than the fifth day following the date of the delivery
of the Event Vesting Notice.  Interest shall accrue on the Mandatory  Redemption
Price from the  seventh day after such amount is due (being the date of an Event
of Default)  through the date of  prepayment  in full thereof at the rate of 18%
per  annum  (or such  lesser  maximum  amount  that is  permitted  to be paid by
applicable  law),  to accrue daily from the date such  payment is due  hereunder
through and including the date of payment.

                  (d) Subject to Sections  3(a) and (b),  this Warrant  shall be
exercisable by the  registered  Holder on any Business Day before 6:30 P.M., New
York City time, at any time and from time to time on or after the date hereof to
and  including  the  Expiration  Date.  At 6:30 P.M.,  New York City time on the
Expiration  Date, the portion of this Warrant not exercised  prior thereto shall
be and become void and of no value.

                   (e) Subject to Sections  3(a) and (b),  this Warrant shall be
exercisable,  either in its entirety or, from time to time, for a portion of the
number of Warrant  Shares.  If less than all of the Warrant  Shares which may be
purchased  under this Warrant are exercised at any time, the Company shall issue
or cause to be issued,  at its expense,  a New Warrant  evidencing  the right to
purchase the remaining  number of Warrant  Shares for which no exercise has been
evidenced by this Warrant.

         4.       DELIVERY OF WARRANT SHARES.


                  (a) Upon surrender of this Warrant,  with the Form of Election
to Purchase  attached  hereto duly  completed and signed,  to the Company at its
address  for notice set forth in  Section  12 and upon  payment of the  Exercise
Price  multiplied  by the number of Warrant  Shares  that the Holder  intends to
purchase hereunder,  in the manner provided  hereunder,  all as specified by the
Holder in the Form of Election to Purchase,  the Company shall  promptly (but in
no event  later than 3  Business  Days after the Date of  Exercise  (as  defined
herein))  issue or cause to be issued and cause to be  delivered  to or upon the
written  order  of the  Holder  and in such  name or  names  as the  Holder  may
designate,  a certificate  for the Warrant  Shares  issuable upon such exercise,
free of restrictive  legends  except in the event that a registration  statement
covering  the  resale of the  Warrant  Shares and naming the Holder as a selling
stockholder  thereunder  is not then  effective  or the  Warrant  Shares are not
freely  transferable  without  volume  restrictions   pursuant  to  Rule  144(k)
promulgated under the Securities Act of 1933, as amended (the "SECURITIES ACT").
Any person so designated by the Holder to receive Warrant Shares shall be deemed
to have  become  holder  of  record  of such  Warrant  Shares  as of the Date of
Exercise of this  Warrant.  The Company  shall,  upon request of the Holder,  if
available,   use  its  best  efforts  to  deliver   Warrant   Shares   hereunder
electronically  through the Depository Trust Corporation or another  established
clearing corporation performing similar functions.

                  A "Date of Exercise" means the date on which the Holders shall
have  delivered  to the  Company  (i)  this  Warrant  (or  any New  Warrant,  as
applicable),  with the Form of Election to Purchase attached hereto (or attached
to such New Warrant)  appropriately  completed and duly signed, and (ii) payment
of the  Exercise  Price for the number of  Warrant  Shares so  indicated  by the
holder hereof to be purchased.

                  (b) If the Company fails to deliver to the Holder  certificate
or certificates  representing the Warrant Shares pursuant to Section 4(a) by the
third (3rd)  Trading Day after the Date of  Exercise,  the Company  shall pay to
such Holder,  in cash,  as liquidated  damages and not as a penalty,  $5,000 for
each day after  such  third  (3rd)  Trading  Day  until  such  certificates  are
delivered.  Nothing  herein  shall  limit the  Holder's  right to pursue  actual
damages for the Company's failure to deliver certificates representing shares of
Common Stock upon  exercise  within the period  specified  herein and the Holder
shall have the right to pursue all remedies  available to it at law or in equity
including,   without  limitation,   a  decree  of  specific  performance  and/or
injunctive relief. The exercise of any such rights shall not prohibit the Holder
from seeking to enforce  damages  pursuant to any other Section  hereof or under
applicable law.

                  (c) In addition to any other  rights  available to the Holder,
if the  Company  fails to  deliver  to the Holder  certificate  or  certificates
representing  the Warrant  Shares  pursuant  to Section  4(a) by the third (3rd)
Trading Day after the Date of  Exercise,  and if after such third (3rd)  Trading
Day the Holder purchases (in an open market  transaction or otherwise) shares of
Common Stock to deliver in  satisfaction  of a sale by the Holder of the Warrant
Shares which the Holder  anticipated  receiving upon such exercise (a "BUY-In"),
then the Company shall pay (1) in cash to the Holder the amount by which (x) the
Holder's total purchase price (including brokerage commissions,  if any) for the
shares  of  Common  Stock  so  purchased  exceeds  (y) the  amount  obtained  by
multiplying  (A) the number of Warrant  Shares that the Company was  required to
deliver pursuant to Section 4(b) to deliver to the Holder in connection with the
exercise  at  issue  by (B)  the  Per  Share  Market  Value  at the  time of the
obligation giving rise to such purchase obligation and (2) deliver to the Holder
the number of shares of Common Stock that would have been issued had the Company
timely complied with its exercise and delivery  obligations  under Section 4(b).
For example,  if the Holder purchases Common Stock having a total purchase price
of $11,000 to cover a Buy-In with respect to an attempted  exercise of shares of
Common Stock with a market price on the date of exercise totaled $10,000,  under
clause (A) of the immediately  preceding  sentence the Company shall be required
to pay the Holder  $1,000.  The Holder shall provide the Company  written notice
indicating the amounts payable to the Holder in respect of the Buy-In.

                  (d) The  Company's  obligations  to issue and deliver  Warrant
Shares in  accordance  with the terms  hereof are  absolute  and  unconditional,
irrespective  of any action or inaction  by the Holder to enforce the same,  any
waiver or consent  with  respect to any  provision  hereof,  the recovery of any
judgment  against any Person or any action to enforce  the same,  or any setoff,
counterclaim,  recoupment,  limitation or termination,  or any breach or alleged
breach by the Holder or any other Person of any obligation to the Company or any
violation  or alleged  violation of law by the Holder or any other  Person,  and
irrespective  of  any  other  circumstance  which  might  otherwise  limit  such
obligation  of the  Company to the Holder in  connection  with the  issuance  of
Warrant  Shares.  If the Company  breaches its  obligations  under this Warrant,
then, in addition to any other  liabilities  the Company may have  hereunder and
under  applicable  law, the Company  shall pay or reimburse the Holder on demand
for all costs of collection and enforcement (including reasonable attorneys fees
and expenses).

         5. PAYMENT OF TAXES.  The Company will pay all documentary  stamp taxes
attributable  to the  issuance  of  Warrant  Shares  upon the  exercise  of this
Warrant;  provided,  however,  that the Company shall not be required to pay any
tax which may be payable in respect of any transfer involved in the registration
of any  certificates for Warrant Shares or Warrants in a name other than that of
the Holder. The Holder shall be responsible for all other tax liability that may
arise as a result of holding or transferring  this Warrant or receiving  Warrant
Shares upon exercise hereof.

         6. REPLACEMENT OF WARRANT.  If this Warrant is mutilated,  lost, stolen
or  destroyed,  the Company  shall  issue or cause to be issued in exchange  and
substitution for and upon  cancellation  hereof,  or in lieu of and substitution
for this Warrant,  a New Warrant,  but only upon receipt of evidence  reasonably
satisfactory to the Company of such loss, theft or destruction and customary and
reasonable  indemnity,  if  requested.  Applicants  for a New Warrant under such
circumstances  shall also  comply  with such other  reasonable  regulations  and
procedures and pay such other reasonable charges as the Company may prescribe.

         7. RESERVATION OF WARRANT SHARES. The Company covenants that it will at
all times reserve and keep  available out of the aggregate of its authorized but
unissued  Common  Stock,  solely for the purpose of enabling it to issue Warrant
Shares upon exercise of this Warrant as herein  provided,  the number of Warrant
Shares which are then issuable and deliverable  upon the exercise of this entire
Warrant,  free from preemptive  rights or any other actual  contingent  purchase
rights of persons other than the Holder (taking into account the adjustments and
restrictions  of Section 8). The Company  covenants that all Warrant Shares that
shall be so issuable and deliverable shall, upon issuance and the payment of the
applicable  Exercise  Price in  accordance  with the terms  hereof,  be duly and
validly authorized, issued and fully paid and nonassessable.

         8. CERTAIN ADJUSTMENTS.  The Purchase Price, the Exercise Price and the
number of Warrant  Shares  issuable upon exercise of this Warrant are subject to
adjustment  from  time to time as set  forth in this  Section.  Upon  each  such
adjustment  of the Exercise  Price  pursuant to this  Section,  the Holder shall
thereafter prior to the Expiration Date be entitled to purchase, at the Exercise
Price resulting from such  adjustment,  the number of Warrant Shares obtained by
multiplying the Exercise Price in effect immediately prior to such adjustment by
the number of Warrant Shares issuable upon exercise of this Warrant  immediately
prior to such  adjustment and dividing the product thereof by the Exercise Price
resulting from such adjustment.

                  (a)  If the  Company,  at  any  time  while  this  Warrant  is
outstanding,  (i) shall pay a stock dividend (except scheduled dividends paid on
outstanding  preferred  stock  as of the  date  hereof  which  contain  a stated
dividend rate) or otherwise make a distribution  or  distributions  on shares of
its Common  Stock or on any other  class of capital  stock  payable in shares of
Common Stock,  (ii) subdivide  outstanding  shares of Common Stock into a larger
number of shares,  or (iii)  combine  outstanding  shares of Common Stock into a
smaller  number of shares,  the Exercise Price shall be multiplied by a fraction
of which the numerator shall be the number of shares of Common Stock  (excluding
treasury  shares,  if any)  outstanding  before  such  event  and of  which  the
denominator  shall be the number of shares of Common Stock  (excluding  treasury
shares,  if any)  outstanding  after such event. Any adjustment made pursuant to
this Section shall become  effective  immediately  after the record date for the
determination of stockholders  entitled to receive such dividend or distribution
and shall become effective immediately after the effective date in the case of a
subdivision  or  combination,  and shall apply to  successive  subdivisions  and
combinations.

                  (b) In case of any reclassification of the Common Stock or any
compulsory  share exchange  pursuant to which the Common Stock is converted into
other  securities,  cash or  property,  then the  Holder  shall  have the  right
thereafter  to  exercise  this  Warrant  only into the shares of stock and other
securities  and  property  receivable  upon or deemed to be held by  holders  of
Common Stock following such  reclassification,  transfer or share exchange,  and
the  Holder  shall be  entitled  upon  such  event to  receive  such  amount  of
securities or property  equal to the amount of Warrant  Shares such Holder would
have been entitled to had such Holder exercised this Warrant  immediately  prior
to  such   reclassification   or  share   exchange.   The   terms  of  any  such
reclassification or share exchange shall include such terms so as to continue to
give to the Holder the right to receive the  securities or property set forth in
this Section 8(b) upon any exercise following any such reclassification or share
exchange.

                  (c)  If the  Company,  at  any  time  while  this  Warrant  is
outstanding, shall distribute to all holders of Common Stock (and not to holders
of this Warrant)  evidences of its  indebtedness or assets or rights or warrants
to  subscribe  for or purchase  any  security  (excluding  those  referred to in
Sections 8(i),  (ii) and (iv)),  then in each such case the Exercise Price shall
be determined by multiplying the Exercise Price in effect  immediately  prior to
the record date fixed for determination of stockholders entitled to receive such
distribution by a fraction of which the denominator  shall be the Exercise Price
determined  as of the record date  mentioned  above,  and of which the numerator
shall be such Exercise Price on such record date less the then fair market value
at such record date of the portion of such assets or evidence of indebtedness so
distributed applicable to one outstanding share of Common Stock as determined by
the Company's  independent  certified public accountants that regularly examines
the financial statements of the Company (an "Appraiser").

                   (d) In case of any (1) merger or consolidation of the Company
with or into another  Person other than a merger or  consolidation  in which the
Company  is the  surviving  entity,  or (2)  sale by the  Company  of more  than
one-half of the assets of the Company (on a book value basis) in one or a series
of related  transactions,  the Holder  shall have the right,  from and after the
date of such merger, sale or consolidation, as the case may be, to and including
the  Expiration  Date,  exercise  this Warrant for the shares of stock and other
securities, cash and property receivable upon or deemed to be held by holders of
Common Stock immediately  following such merger,  consolidation or sale, and the
Holder shall be entitled upon such event or series of related  events to receive
such amount of securities,  cash and property as the Common Stock for which this
Warrant   could  have  been   exercised   immediately   prior  to  such  merger,
consolidation or sales would have been entitled,  unless,  the acquiring company
or newly  created  company  shall have paid the Holder the value of the  Warrant
determined on a  Black-Scholes  basis.  (For example,  if (1) the Company merges
with and into another  Person  ("Newco")  and as a result  thereof each share of
Common  Stock  shall  entitle  the holder  thereof to receive  two shares of the
common stock of Newco and $2.00 in cash,  and (2) the  Exercise  Price is at the
effective time of such merger $6.00 per share,  then at all times thereafter and
prior to the Expiration  Date this Warrant shall upon the payment of $6.00 times
the number of Warrant  Shares  represent the right to receive (A) that number of
shares of the Common Stock of Newco as is equal to two times the Warrant Shares,
and (B) that  amount of cash as is equal to $2.00  times the  number of  Warrant
Shares.) The terms of any such merger,  sale or consolidation shall include such
terms so as to continue to give the Holder the right to receive the  securities,
cash and property set forth in this Section upon any  conversion  or  redemption
following such event.  This provision  shall  similarly apply to successive such
events.

                  (f) For the purposes of this Section 8, the following  clauses
shall also be applicable:

                      (i) RECORD DATE.  In case the Company  shall take a record
of the  holders of its Common  Stock for the  purpose of  entitling  them (A) to
receive  a  dividend  or  other  distribution  payable  in  Common  Stock  or in
securities  convertible or  exchangeable  into shares of Common Stock, or (B) to
subscribe for or purchase Common Stock or securities convertible or exchangeable
into  shares of Common  Stock,  then such  record date shall be deemed to be the
date of the  issue or sale of the  shares of  Common  Stock  deemed to have been
issued or sold upon the declaration of such dividend or the making of such other
distribution  or the  date of the  granting  of such  right of  subscription  or
purchase, as the case may be.

                      (ii) TREASURY SHARES. The number of shares of Common Stock
outstanding  at any given time shall not include  shares owned or held by or for
the account of the  Company,  and the  disposition  of any such shares  shall be
considered an issue or sale of Common Stock.

                  (g) All calculations under this Section 8 shall be made to the
nearest cent or the nearest 1/100th of a share, as the case may be.

                   (h) If (i) the Company shall declare a dividend (or any other
distribution)  on its Common  Stock;  (ii) the Company  shall  declare a special
nonrecurring  cash dividend on or a redemption  of its Common Stock,  other than
pursuant to the Company's  existing  stock  repurchase  program or any extension
thereof;  (iii) the Company  shall  authorize the granting to all holders of the
Common  Stock  rights or warrants  to  subscribe  for or purchase  any shares of
capital  stock  of  any  class  or of  any  rights;  (iv)  the  approval  of any
stockholders   of  the  Company  shall  be  required  in  connection   with  any
reclassification  of the Common Stock, any  consolidation or merger to which the
Company is a party,  any sale or  transfer  of all or  substantially  all of the
assets of the Company, or any compulsory share exchange whereby the Common Stock
is converted into other securities,  cash or property;  or (v) the Company shall
authorize the voluntary dissolution, liquidation or winding up of the affairs of
the Company,  then the Company  shall cause to be mailed to each Holder at their
last  addresses  as they shall  appear  upon the Warrant  Register,  at least 20
calendar  days prior to the  applicable  record or  effective  date  hereinafter
specified,  a notice  stating  (x) the date on which a record is to be taken for
the purpose of such dividend,  distribution,  redemption, rights or warrants, or
if a record is not to be taken, the date as of which the holders of Common Stock
of record to be entitled to such dividend, distributions,  redemption, rights or
warrants are to be  determined  or (y) the date on which such  reclassification,
consolidation,  merger,  sale,  transfer or share exchange is expected to become
effective  or close,  and the date as of which it is  expected  that  holders of
Common  Stock of record  shall be entitled to  exchange  their  shares of Common
Stock  for   securities,   cash  or  other   property   deliverable   upon  such
reclassification,   consolidation,   merger,  sale,  transfer,  share  exchange,
dissolution,  liquidation or winding up; PROVIDED, that the failure to mail such
notice or any defect  therein  or in the  mailing  thereof  shall not affect the
validity of the corporate action required to be specified in such notice.

         9.       PAYMENT OF  EXERCISE  PRICE.  The Holder  shall pay the
Exercise  Price in one of the  following manners:

                  (a) CASH  EXERCISE.   The  Holder  may  deliver   immediately
available funds; or


                  (b) CASHLESS  EXERCISE.  The Holder may surrender this Warrant
to the Company together with a notice of cashless  exercise,  in which event the
Company  shall issue to the Holder the number of Warrant  Shares  determined  as
follows:

                              X = Y [(A-B)/A]
         where:
                              X = the number of Warrant Shares to be issued
         to the Holder.

                              Y  =  the  number  of  Warrant  Shares  with
                              respect  to  which  this  Warrant  is  being
                              exercised.

                              A = the average of the  closing  sale prices
                              of the Common Stock for the five (5) trading
                              days   immediately   prior   to   (but   not
                              including)  the Date of Exercise as reported
                              by Bloomberg  Information Systems,  Inc. (or
                              any  successor  to its function of reporting
                              stock prices).

                              B = the Exercise Price.

For purposes of Rule 144  promulgated  under the Securities Act, it is intended,
understood  and  acknowledged  that the  Warrant  Shares  issued  in a  cashless
exercise  transaction  shall be deemed to have been acquired by the Holder,  and
the  holding  period  for the  Warrant  Shares  shall  be  deemed  to have  been
commenced, on the issue date.

         10.      CERTAIN EXERCISE RESTRICTIONS.

                  (a) A Holder may not exercise  this Warrant to the extent such
exercise  would  result in the  Holder,  together  with any  affiliate  thereof,
beneficially  owning (as  determined  in  accordance  with Section  13(d) of the
Exchange Act and the rules  promulgated  thereunder)  in excess of 4.999% of the
then issued and outstanding  shares of Common Stock,  including  shares issuable
upon such  exercise and held by such Holder after  application  of this Section.
Since the Holder  will not be  obligated  to report to the Company the number of
shares of Common Stock it may hold at the time of an exercise hereunder,  unless
the  exercise at issue would result in the issuance of shares of Common Stock in
excess of 4.999% of the then  outstanding  shares of Common Stock without regard
to any  other  shares  which  may be  beneficially  owned  by the  Holder  or an
affiliate  thereof,  the  Holder  shall have the  authority  and  obligation  to
determine  whether the  restriction  contained  in this  Section  will limit any
particular  exercise hereunder and to the extent that the Holder determines that
the limitation  contained in this Section  applies,  the  determination of which
portion  of  this  Warrant  is  exercisable  shall  be  the  responsibility  and
obligation  of the  Holder.  If the Holder has  delivered  a Form of Election to
Purchase for a number of Warrant Shares that, without regard to any other shares
that the Holder or its  affiliates  may  beneficially  own,  would result in the
issuance in excess of the permitted amount  hereunder,  the Company shall notify
the Holder of this fact and shall honor the exercise for the maximum  portion of
this Warrant  permitted  to be exercised on such Date of Exercise in  accordance
with the periods described herein and, at the option of the Holder,  either keep
the  portion of the Warrant  tendered  for  exercise in excess of the  permitted
amount  hereunder  for future  exercises  or return such  excess  portion of the
Warrant to the Holder.  The provisions of this Section may be waived by a Holder
(but only as to itself and not to any other  Holder)  upon not less than 61 days
prior notice to the  Company.  Other  Holders  shall be  unaffected  by any such
waiver.

                  (b) A Holder may not exercise  this Warrant to the extent such
exercise  would  result in the  Holder,  together  with any  affiliate  thereof,
beneficially  owning (as  determined  in  accordance  with Section  13(d) of the
Exchange Act and the rules  promulgated  thereunder)  in excess of 9.999% of the
then issued and outstanding  shares of Common Stock,  including  shares issuable
upon such  exercise and held by such Holder after  application  of this Section.
Since the Holder  will not be  obligated  to report to the Company the number of
shares of Common Stock it may hold at the time of an exercise hereunder,  unless
the  exercise at issue would result in the issuance of shares of Common Stock in
excess of 9.999% of the then  outstanding  shares of Common Stock without regard
to any  other  shares  which  may be  beneficially  owned  by the  Holder  or an
affiliate  thereof,  the  Holder  shall have the  authority  and  obligation  to
determine  whether the  restriction  contained  in this  Section  will limit any
particular  exercise hereunder and to the extent that the Holder determines that
the limitation  contained in this Section  applies,  the  determination of which
portion  of  this  Warrant  is  exercisable  shall  be  the  responsibility  and
obligation  of the  Holder.  If the Holder has  delivered  a Form of Election to
Purchase for a number of Warrant Shares that, without regard to any other shares
that the Holder or its  affiliates  may  beneficially  own,  would result in the
issuance in excess of the permitted amount  hereunder,  the Company shall notify
the Holder of this fact and shall honor the exercise for the maximum  portion of
this Warrant  permitted  to be exercised on such Date of Exercise in  accordance
with the periods described herein and, at the option of the Holder,  either keep
the  portion of the Warrant  tendered  for  exercise in excess of the  permitted
amount  hereunder  for future  exercises  or return such  excess  portion of the
Warrant to the Holder.  The provisions of this Section may be waived by a Holder
(but only as to itself and not to any other  Holder)  upon not less than 61 days
prior notice to the  Company.  Other  Holders  shall be  unaffected  by any such
waiver.

                  (c) If the  Company  Stock is then  listed for  trading on the
Nasdaq or the  Nasdaq  SmallCap  Market and the  Company  has not  obtained  the
Shareholder Approval (as defined below), then the Company may not, upon exercise
of this Warrant,  issue in excess of the product of (i) 4,528,181 Warrant Shares
(which equals 19.999% of the number of shares of Common Stock outstanding on the
Closing  Date) and (ii) the  quotient  obtained  by  dividing  (x) the number of
shares of Common  Stock  issued and sold to the  original  Holder on the Closing
Date by (y) the number of shares of Common  Stock issued and sold by the Company
on the Closing  Date (such number of shares,  the  "Issuable  Maximum").  If any
Holder shall no longer hold Warrants then such Holder's remaining portion of the
Issuable Maximum shall be allocated pro-rata among the remaining Holders.  If on
any Date of Exercise  (A) the Company  Stock is listed for trading on the Nasdaq
or the Nasdaq  SmallCap  Market,  (B) the Exercise  Price then in effect is such
that the aggregate  number of shares of Common Stock that would then be issuable
upon exercise in full of this Warrant,  together with any shares of Common Stock
previously  issued  upon  exercise  of this  Warrant,  would equal or exceed the
Issuable  Maximum,  and (C) the Company shall not have  previously  obtained the
vote of  shareholders,  if any, as may be required by the  applicable  rules and
regulations  of the Nasdaq  Stock  Market to approve  the  issuance of shares of
Common Stock in excess of the Issuable Maximum pursuant to the terms hereof (the
"Shareholder Approval"),  then the Company shall issue to the Holder a number of
shares of Common  Stock equal to the Issuable  Maximum and,  with respect to the
shares whose  issuance  would result in an issuance of shares of Common Stock in
excess of the Issuable Maximum, (the "Excess Warrant Shares"),  the Holder shall
have the option to  require  the  Company to either (1) use its best  efforts to
obtain the Shareholder Approval applicable to such issuance as soon as possible,
but in any event no later than 60 days after such  request  (such 60th day,  the
"Target  Date") or (2) pay to the  Holder,  within one (1)  Trading Day from the
request  therefor,  an amount in cash  equal to the  product  of (x) the  Excess
Warrant Shares  multiplied by (y) the closing sales price of the Common Stock on
(a) the Target Date or (b) the Date of Exercise giving rise to the obligation to
seek Shareholder  Approval,  whichever is greater (the "Cash  Payment").  In the
event the Holder has  elected to  require  the  Company to seek the  Shareholder
Approval  pursuant to clause (1) of the immediately  preceding  sentence and the
Company does not obtain the Shareholder Approval on or prior to the Target Date,
then, on the Target Date,  the Company shall pay the Cash Payment to the Holder.
If the Company  fails to pay the Cash  Payment in full  pursuant to this Section
within seven (7) days after the date  payable,  the Company will pay interest on
such amount at a rate of 18% per annum,  or such lesser  maximum  amount that is
permitted to be paid by applicable  law, to the Holder,  accruing daily from the
date payable until such amount, plus all such interest thereon, is paid in full.
The Company  and the Holder  understand  and agree that  shares of Common  Stock
issued upon exercise of this Warrant and then held by the Holder or an affiliate
thereof may not cast votes or be deemed  outstanding for purposes of any vote to
obtain the Shareholder Approval.

         11.  FRACTIONAL  SHARES.  The Company shall not be required to issue or
cause to be issued  fractional  Warrant  Shares on the exercise of this Warrant.
The number of full Warrant  Shares which shall be issuable  upon the exercise of
this Warrant shall be computed on the basis of the  aggregate  number of Warrant
Shares purchasable on exercise of this Warrant so presented.  If any fraction of
a Warrant Share would, except for the provisions of this Section 12, be issuable
on the exercise of this  Warrant,  the Company shall pay an amount in cash equal
to the Exercise Price multiplied by such fraction.

         12. NOTICES.  Any and all notices or other communications or deliveries
hereunder  shall be in writing and shall be deemed  given and  effective  on the
earliest of (i) the date of  transmission,  if such notice or  communication  is
delivered  via  facsimile at the facsimile  telephone  number  specified in this
Section  prior to 6:30 P.M.  (New York City  time) on a Business  Day,  (ii) the
Business Day after the date of transmission,  if such notice or communication is
delivered  via  facsimile at the facsimile  telephone  number  specified in this
Section  later than 6:30 P.M.  (New York City time) on any date and earlier than
11:59 P.M.  (New York City time) on such date,  (iii) the Business Day following
the date of mailing, if sent by nationally recognized overnight courier service,
or (iv) upon  actual  receipt by the party to whom such notice is required to be
given. The addresses for such communications shall be: (i) if to the Company, to
110 Hartwell Avenue Lexington,  MA 02421, facsimile:  (781) 862-4338,  attention
Chief Financial Officer,  or (ii) if to the Holder, to the Holder at the address
or facsimile  number  appearing on the Warrant Register or such other address or
facsimile  number as the Holder may  provide to the Company in  accordance  with
this Section.


         13.      WARRANT AGENT.

                  (a) The  Company  shall  serve as  warrant  agent  under  this
Warrant.  Upon thirty (30) days' notice to the Holder, the Company may appoint a
new warrant agent.

                  (b) Any corporation  into which the Company or any new warrant
agent may be merged or any corporation resulting from any consolidation to which
the Company or any new  warrant  agent  shall be a party or any  corporation  to
which the Company or any new warrant agent  transfers  substantially  all of its
corporate trust or shareholders  services  business shall be a successor warrant
agent under this Warrant  without any further act.  Any such  successor  warrant
agent shall  promptly  cause  notice of its  succession  as warrant  agent to be
mailed (by first class mail, postage prepaid) to the Holder at the Holder's last
address as shown on the Warrant Register.

         14.      MISCELLANEOUS.

                  (a) This Warrant  shall be binding on and inure to the benefit
of the parties hereto and their respective  successors and assigns. This Warrant
may be amended  only in writing  signed by the  Company and the Holder and their
successors and assigns.

                  (b) Subject to Section 14(a),  above,  nothing in this Warrant
shall be construed to give to any person or  corporation  other than the Company
and the Holder any legal or equitable right, remedy or cause under this Warrant.
This Warrant  shall inure to the sole and  exclusive  benefit of the Company and
the Holder.

                  (c) The corporate  laws of the State of Delaware  shall govern
all issues  concerning the relative rights of the Company and its  stockholders.
All other  questions  concerning the  construction,  validity,  enforcement  and
interpretation  of this Warrant  shall be governed by and construed and enforced
in accordance with the internal laws of the State of New York, without regard to
the  principles  of conflicts of law thereof.  The Company and the Holder hereby
irrevocably submit to the exclusive jurisdiction of the state and federal courts
sitting in the City of New York,  borough of Manhattan,  for the adjudication of
any  dispute  hereunder  or in  connection  herewith  or  with  any  transaction
contemplated  hereby or discussed herein,  and hereby  irrevocably  waives,  and
agrees not to assert in any suit, action or proceeding, any claim that it is not
personally  subject to the  jurisdiction  of any such court,  or that such suit,
action or  proceeding  is  improper.  Each of the Company and the Holder  hereby
irrevocably  waives  personal  service of process and consents to process  being
served in any such suit,  action or  proceeding by receiving a copy thereof sent
to the Company at the address in effect for notices to it under this  instrument
and agrees that such service shall  constitute  good and  sufficient  service of
process and notice thereof. Nothing contained herein shall be deemed to limit in
any way any right to serve process in any manner permitted by law.

                  (d) The  headings  herein  are for  convenience  only,  do not
constitute a part of this Warrant and shall not be deemed to limit or affect any
of the provisions hereof.

                  (e) In case any one or more of the  provisions of this Warrant
shall  be  invalid  or   unenforceable   in  any   respect,   the  validity  and
enforceability  of the remaining  terms and provisions of this Warrant shall not
in any way be affected or impaired  thereby and the parties will attempt in good
faith  to  agree  upon a  valid  and  enforceable  provision  which  shall  be a
commercially  reasonable  substitute  therefor,  and  upon  so  agreeing,  shall
incorporate such substitute provision in this Warrant.



                  [REMAINDER OF PAGE INTENTIONALLY LEFT BLANK,
                             SIGNATURE PAGE FOLLOWS]


<PAGE>

         IN WITNESS  WHEREOF,  the Company  has caused  this  Warrant to be duly
executed by its authorized officer as of the date first indicated above.

                                          MACROCHEM CORPORATION


                                          By:/s/Kenneth L. Rice, Jr.
                                          Name:   Kenneth L. Rice, Jr.
                                          Title:  Chief Financial Officer


<PAGE>



                          FORM OF ELECTION TO PURCHASE

(To be executed by the Holder to exercise the right to purchase shares of Common
Stock under the foregoing Warrant)

To MacroChem Corporation

         In accordance  with the Warrant  enclosed with this Form of Election to
Purchase,  the undersigned hereby  irrevocably elects to purchase  _____________
shares of common stock ("Common Stock"),  $.01 par value per share, of MacroChem
Corporation  and,  if  such  Holder  is  not  utilizing  the  cashless  exercise
provisions  set forth in this  Warrant,  encloses  herewith  $________  in cash,
certified or official bank check or checks,  which sum  represents the aggregate
Exercise  Price (as defined in the  Warrant)  for the number of shares of Common
Stock to which this Form of  Election  to Purchase  relates,  together  with any
applicable taxes payable by the undersigned pursuant to the Warrant.

         The  undersigned  requests that  certificates  for the shares of Common
Stock issuable upon this exercise be issued in the name of

                                               PLEASE INSERT SOCIAL SECURITY OR
                                               TAX IDENTIFICATION NUMBER

                                               ________________________________



_______________________________________________________________________________
                        (Please print name and address)




         If the number of shares of Common  Stock  issuable  upon this  exercise
shall not be all of the shares of Common Stock which the undersigned is entitled
to purchase in accordance with the enclosed  Warrant,  the undersigned  requests
that a New Warrant (as defined in the Warrant)  evidencing the right to purchase
the shares of Common  Stock not  issuable  pursuant  to the  exercise  evidenced
hereby be issued in the name of and delivered to:


_______________________________________________________________________________
                         (Please print name and address)

_______________________________________________________________________________

_______________________________________________________________________________




Dated:____________,_____          Name of Holder:



                                  (Print)______________________________________

                                  (By:)________________________________________
                                  (Name:)
                                  (Title:)
                                  (Signature  must  conform in all  respects to
                                  name of holder as specified on the face of the
                                  Warrant)


<PAGE>

                               FORM OF ASSIGNMENT

           [To be completed and signed only upon transfer of Warrant]

         FOR VALUE RECEIVED, the undersigned hereby sells, assigns and transfers
unto  ________________________________  the  right  represented  by  the  within
Warrant to purchase ____________ shares of Common Stock of MacroChem Corporation
to which the within Warrant  relates and appoints  ________________  attorney to
transfer  said right on the books of  MacroChem  Corporation  with full power of
substitution in the premises.

Dated:

_____________,________

                                          ___________________________________
                                          (Signature   must  conform  in  all
                                          respects  to  name  of  holder  as
                                          specified on the face of the Warrant)


                                          ____________________________________
                                          Address of Transferee

                                          ____________________________________

                                          ____________________________________



In the presence of:


_____________________________


<PAGE>

                                    EXHIBIT A


         (i) "Adjustment Price" means the average of the Per Share Market Values
for the 20 consecutive  Trading Days preceding a Vesting Date (which may include
Trading Days prior to the Effective Date) as selected by the Holder.

         (ii)  "Applicable  Share  Number"  means 25% of the number of shares of
Common Stock purchased by the Holder pursuant to the Purchase Agreement.

         (iii)  "Business  Day" shall have the meaning set forth in the Purchase
Agreement.

         (iv)  "Closing  Date" shall have the meaning set forth in the  Purchase
Agreement.

         (v) "Commission" means the Securities and Exchange Commission.

         (vi)  "Effective  Date"  the  date  on  which  the  Underlying   Shares
Registration Statement is first declared effective by the Commission.

         (vii)  "Mandatory  Redemption  Price"  for  each  Warrant  Share  to be
redeemed  shall  equal  the sum of (i) 120%  multiplied  by the  greater  of the
average of the Per Share Market  Values for the five (5) Trading Days  preceding
the (A) date of the  delivery  of the  Event  Vesting  Notice,  and (B) date the
Mandatory  Redemption Price is paid in full, and (ii) all other amounts,  costs,
expenses and liquidated damages due in respect of such Warrant Share.

         (viii) "Nasdaq" means the Nasdaq National Market.

         (ix) "Per Share  Market  Value"  means on any  particular  date (a) the
closing bid price per share of the Common Stock on such date on the Nasdaq or on
any  Subsequent  Market on which the Common  Stock is then listed or quoted,  as
reported by  Bloomberg  Information  Services,  Inc.  (or any  successor  entity
succeeding to its function of reporting prices), or if there is no such price on
such date, then the closing bid price on the Nasdaq or on such Subsequent Market
on the date nearest  preceding  such date, as reported by Bloomberg  Information
Services,  Inc. (or any successor entity succeeding to its function of reporting
prices),  or (b) if the Common  Stock is not then listed or quoted on the Nasdaq
or a Subsequent Market, the closing bid price for a share of Common Stock in the
over-the-counter   market,   as  reported  by  the  National   Quotation  Bureau
Incorporated or similar  organization  or agency  succeeding to its functions of
reporting  prices) at the close of business  on such date,  or (c) if the Common
Stock is not then reported by the National  Quotation  Bureau  Incorporated  (or
similar organization or agency succeeding to its functions of reporting prices),
then the average of the "Pink Sheet" quotes for the relevant  conversion period,
as  determined  in good faith by the Holder,  or (d) if the Common  Stock is not
then  publicly  traded  the fair  market  value of a share  of  Common  Stock as
determined  by an Appraiser  selected in good faith by the Holders of a majority
of the applicable Warrant Shares.

         (x) "Purchase Agreement" means the Securities Purchase Agreement, dated
the date  hereof to which the Company  and the  original  Holder are parties and
pursuant to which this Warrant was issued.

         (xi)  "Purchase  Price" means 105% of the average  closing bid price of
the Common Stock for the five trading days prior to Closing  (which number shall
be subject to equitable adjustment for stock splits,  recombinations and similar
events).

         (xii)  "Registration  Rights  Agreement" means the Registration  Rights
Agreement,  dated the date hereof to which the Company and the  original  Holder
are parties.

         (xiii)  "Subsequent  Market"  shall  mean  any of the  New  York  Stock
Exchange, American Stock Exchange, or Nasdaq SmallCap Market.

         (xiv) "Trading Day" means (a) a day on which the Common Stock is traded
on the  Nasdaq or on the  Subsequent  Market on which the  Common  Stock is then
listed or quoted,  as the case may be, or (b) if the Common  Stock is not listed
on the Nasdaq or a Subsequent  Market, a day on which the Common Stock is traded
in the  over-the-counter  market, as reported by the OTC Bulletin Board , or (c)
if the Common Stock is not quoted on the OTC Bulletin  Board, a day on which the
Common  Stock is  quoted  in the  over-the-counter  market  as  reported  by the
National  Quotation Bureau  Incorporated (or any similar  organization or agency
succeeding its functions of reporting prices);  PROVIDED, that in the event that
the  Common  Stock is not  listed or  quoted  as set  forth in (a),  (b) and (c)
hereof, then Trading Day shall mean a Business Day.

         (xv)  "Transaction  Documents"  shall have the meaning set forth in the
Purchase Agreement.

         (xvi) "Underlying Shares Registration Statement" shall have the meaning
ascribed to it in the Purchase Agreement.



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