PALATIN TECHNOLOGIES INC
8-K, 1998-05-08
IN VITRO & IN VIVO DIAGNOSTIC SUBSTANCES
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                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549
                                 --------------


                                    FORM 8-K


                                 CURRENT REPORT
                     PURSUANT TO SECTION 13 OR 15(d) OF THE
                         SECURITIES EXCHANGE ACT OF 1934


                                 April 28, 1998
                             -----------------------
                Date of Report (Date of earliest event reported)


                           PALATIN TECHNOLOGIES, INC.
                     --------------------------------------
             (Exact name of registrant as specified in its charter)


                                    Delaware
                               ------------------
                 (State or other jurisdiction of incorporation)


            0-22686                              95-4078884
     ------------------------       -----------------------------------
     (Commission File Number)       (IRS Employer Identification Number)


   214 Carnegie Center, Suite 100, Princeton, New Jersey       08540
  -------------------------------------------------------   ----------
        (Address of Principal Executive Offices)            (Zip Code)


       Registrant's telephone number, including area code (609) 520-1911

                                 Not Applicable
               ---------------------------------------------------
          (Former Name or Former Address, if Changed Since Last Report)


<PAGE>


ITEM 5.   OTHER EVENTS.

        As of  April  28,  1998,  Palatin  Technologies,  Inc.  (the  "Company")
completed a private placement of 18,875 shares of Series B Convertible Preferred
Stock of the  Company  for gross  proceeds  of  $1,887,500  and net  proceeds of
approximately  $1,600,000.  The Series B Convertible Preferred Stock was sold to
four accredited investors pursuant to Rule 506 of Regulation D promulgated under
the Securities Act of 1933, as amended (the "Securities Act").

        The  Company  has  agreed  to file,  by June 12,  1998,  a  registration
statement  under the Securities  Act,  registering  for resale the shares of the
Company's  common  stock,  $.01 par  value  (the  "Common  Stock")  issuable  on
conversion of the Series B Convertible  Preferred  Stock.  See the  Registration
Rights Agreement filed as Exhibit 99.2 to this Form 8-K.

        The net  proceeds  of the  private  placement  will be used for  working
capital  purposes,  and no  portion  will  be  used  to  redeem  any  equity  or
equity-equivilent securities of the Company, and no more than $1,200,000 will be
used for  repayment  of the  Company's  indebtedness.  Paramount  Capital,  Inc.
received a finder's fee of $188,750 in connection with the private placement.

        Each share of Series B Convertible Preferred Stock is convertible at any
time,  at the option of the  holder,  into the number of shares of Common  Stock
equal to $100 divided by the conversion price (as "conversion  price" is defined
in the Certificate of  Designations of the Series B Convertible  Preferred Stock
filed as Exhibit  3.8 to this Form 8-K).  The current  conversion  price for the
Series  B  Convertible  Preferred  Stock  is  $5.50.  Each  share  of  Series  B
Convertible  Preferred Stock is currently  convertible into  approximately  18.2
shares of Common Stock.

        The conversion price for Series B Convertible Preferred Stock is subject
to  adjustment  upon  certain  events,  including  payment  of stock  dividends,
distributions, and tender offer or merger announcements. The Series B Conversion
Price is also subject to adjustment  on August 26, 1998, if the average  closing
bid price of the  Common  Stock for the thirty  (30)  consecutive  trading  days
immediately  preceding  August 26, 1998 (the "Series B Reset Trading  Price") is
less than $6.05 (a "Series B Reset  Event").  Upon a Series B Reset  Event,  the
Series B  Conversion  Price will be reduced to greater of (i) the Series B Reset
Trading Price divided by 1.1 or (ii) $2.75.  See the Certificate of Designations
of the Series B Convertible  Preferred Stock,  filed as Exhibit 3.8 to this Form
8-K.


                                        2


<PAGE>

ITEM 7.   FINANCIAL STATEMENTS, PRO FORMA FINANCIAL INFORMATION AND EXHIBITS.

          c)    Exhibits 

                3.8     Certificate  of  Designations  of  Series B  Convertible
                        Preferred Stock of the Company, filed on April 27, 1998

                4.7     Specimen Certificate for Series B Convertible  Preferred
                        Stock

                99.1    Convertible  Preferred Stock Purchase Agreement dated as
                        of  April  28,   1998,   between  the  Company  and  the
                        purchasers   named   therein,   relating   to  Series  B
                        Convertible Preferred Stock

                99.2    Registration  Rights  Agreement  dated as of  April  28,
                        1998,  between  the  Company  and the  purchasers  named
                        therein, relating to Common Stock issuable on conversion
                        of  Series  B  Convertible   Preferred   Stock

          SIGNATURES

         Pursuant to the  requirements  of the Securities  Exchange Act of 1934,
the  registrant  has duly  caused  this report to be signed on its behalf by the
undersigned hereunto duly authorized.


                                        PALATIN TECHNOLOGIES, INC.


                                        By    /s/ Stephen T. Wills
                                           ---------------------------
                                           Name:  Stephen T. Wills
                                           Title: Vice President and
                                                  Chief Financial Officer


Date: May 8, 1998


                                        3




                           CERTIFICATE OF DESIGNATIONS

                                       of

                      SERIES B CONVERTIBLE PREFERRED STOCK

                                       of

                           PALATIN TECHNOLOGIES, INC.

                         Pursuant to Section 151 of the
                General Corporation Law of the State of Delaware


               PALATIN TECHNOLOGIES,  INC., a corporation organized and existing
under the laws of the State of Delaware (the "Corporation"), does hereby certify
that,  pursuant to the  authority  conferred  on the Board of  Directors  of the
Corporation  by the  Certificate  of  Incorporation,  as  amended  to date  (the
"Certificate  of  Incorporation"),  of the  Corporation  and in accordance  with
Section 151 of the General  Corporation Law of the State of Delaware,  the Board
of Directors of the Corporation adopted the following resolution  establishing a
series of 18,875  shares of Preferred  Stock of the  Corporation  designated  as
"Series B Convertible Preferred Stock":

               RESOLVED,  that pursuant to the authority  conferred on the Board
        of Directors of this Corporation by the Certificate of Incorporation,  a
        series of Preferred  Stock, par value $.01 per share, of the Corporation
        is hereby  established and created,  and that the designation and number
        of shares  thereof  and the voting  and other  powers,  preferences  and
        relative, participating,  optional or other rights of the shares of such
        series and the qualifications,  limitations and restrictions thereof are
        as follows:

                      Series B Convertible Preferred Stock

               Section  1.  Designation,  Amount  and Par  Value.  The series of
preferred stock shall be designated as Series B Convertible Preferred Stock (the
"Preferred Stock") and the number of shares so designated shall be 18,875 (which
shall not be subject  to  increase  without  the  consent of the  holders of the
Preferred Stock (each, a "Holder")).  Each share of Preferred Stock shall have a
par value of $.01 per share and a stated  value of $100 per share  (the  "Stated
Value").





                                       -1-

<PAGE>



               Section 2.  Dividends and Certain Distributions.

        (a) Holders of Preferred Stock shall not be entitled to receive periodic
dividends on the Preferred Stock.

        (b) So long as any Preferred Stock shall remain outstanding, neither the
Company nor any subsidiary  thereof shall redeem,  purchase or otherwise acquire
directly  or  indirectly  any Junior  Securities  (as defined in Section 7), nor
shall the Company directly or indirectly pay or declare any dividend or make any
distribution  (other than a dividend  or  distribution  described  in Section 5)
upon, nor shall any  distribution be made in respect of, any Junior  Securities,
nor shall any monies be set aside for or applied to the  purchase or  redemption
(through a sinking fund or  otherwise)  of any Junior  Securities or shares pari
passu with the Preferred Stock,  except for repurchases  effected by the Company
on the open market, pursuant to a direct stock purchase plan.

               Section 3. Voting Rights. Except as otherwise provided herein and
as otherwise  required by law, the Preferred  Stock shall have no voting rights.
However,  so long as any shares of Preferred Stock are outstanding,  the Company
shall not and shall cause its  subsidiaries not to, without the affirmative vote
of the Holders of 66 2/3% of the shares of the Preferred Stock then outstanding,
(a) alter or change  adversely  the powers,  preferences  or rights given to the
Preferred  Stock,  (b)  alter or amend  this  Certificate  of  Designation,  (c)
authorize or create any class of stock ranking as to distribution of assets upon
a  Liquidation  (as defined in Section 4) or as to  dividends,  voting rights or
otherwise   senior  to  the  Preferred  Stock,  (d)  amend  its  Certificate  of
Incorporation,  bylaws or other charter  documents so as to affect adversely any
rights of any Holders, (e) increase the authorized number of shares of Preferred
Stock, or (f) enter into any agreement with respect to the foregoing.

               Section 4.  Liquidation.  Upon any  liquidation,  dissolution  or
winding-up of the Company,  whether voluntary or involuntary (a  "Liquidation"),
the  Holders  shall be  entitled  to receive  out of the assets of the  Company,
whether such assets are capital or surplus, for each share of Preferred Stock an
amount  equal to the Stated Value before any  distribution  or payment  shall be
made to the holders of any Junior  Securities,  and if the assets of the Company
shall be insufficient to pay in full such amounts,  then the entire assets to be
distributed  to the Holders of Preferred  Stock shall be  distributed  among the
Holders of Preferred  Stock ratably in accordance  with the  respective  amounts
that would be payable on such shares if all amounts payable thereon were paid in
full. A sale,  conveyance  or  disposition  of all or  substantially  all of the
assets of the Company or the  effectuation  by the Company of a  transaction  or
series of related transactions in which more than 50% of the voting power of the
Company is disposed of, or a consolidation or merger of the Company with or into
any other  company  or  companies  shall not be treated  as a  Liquidation,  but
instead shall be subject to the  provisions of Section 5. The Company shall mail
written  notice  of any such  Liquidation,  not less  than 45 days  prior to the
payment date stated therein, to each record Holder of Preferred Stock.



                                       -2-

<PAGE>



               Section 5.    Conversion.

        (a)(i) Each share of Preferred Stock shall be convertible into shares of
Common  Stock  (subject to  reduction  pursuant to Section  5(a)(ii)  hereof and
Section 4.8 of the Purchase  Agreement) at the  Conversion  Ratio (as defined in
Section 7) at the option of the Holder in whole or in part at any time after the
Original  Issue Date (as  defined  in  Section  7).  The  Holders  shall  effect
conversions by surrendering  the certificate or  certificates  representing  the
shares of Preferred Stock to be converted to the Company, together with the form
of conversion notice attached hereto as Exhibit A (a "Conversion Notice").  Each
Conversion  Notice shall  specify the number of shares of Preferred  Stock to be
converted and the date on which such  conversion  is to be effected,  which date
may not be prior to the date the  Holder  delivers  such  Conversion  Notice  by
facsimile  (the  "Conversion  Date").  If no  Conversion  Date is specified in a
Conversion  Notice,  the  Conversion  Date shall be the date that the Conversion
Notice is deemed  delivered  pursuant to Section 5(h).  Subject to Sections 5(b)
and 5(a)(ii) hereof,  each Conversion Notice,  once given, shall be irrevocable.
If the Holder is converting less than all shares of Preferred Stock  represented
by the  certificate or  certificates  tendered by the Holder with the Conversion
Notice, or if a conversion  hereunder cannot be effected in full for any reason,
the Company shall promptly  deliver to such Holder (in the manner and within the
time set forth in Section 5(b)) a certificate  for such number of shares as have
not been converted.

        (ii) If on any  Conversion  Date  (A) the  Common  Stock is  listed  for
trading on the Nasdaq  National Market or the Nasdaq  SmallCap  Market,  (B) the
Conversion  Price then in effect is such that the aggregate  number of shares of
Common  Stock that would then be issuable  upon  conversion  in full of all then
outstanding  shares of Preferred  Stock,  together with any shares of the Common
Stock previously issued upon conversion of the shares of Preferred Stock,  would
equal or exceed 20% of the number of shares of the Common Stock  outstanding  on
the Original Issue Date (such number of shares as would not equal or exceed such
20%  limit,  the  "Issuable  Maximum"),  and  (C) the  Company  shall  not  have
previously  obtained the vote of stockholders (the "Shareholder  Approval"),  if
any, as may be required by the rules and  regulations of The Nasdaq Stock Market
(or any  successor  association)  applicable  to approve the  issuance of Common
Stock in excess of the Issuable Maximum in a private placement whereby shares of
Common  Stock are  deemed to have been  issued at a price  that is less than the
greater of book or fair market value of the Common Stock, then the Company shall
issue to the  Holder so  requesting  a  conversion  a number of shares of Common
Stock equal to the Issuable  Maximum and,  with respect to the  remainder of the
aggregate Stated Value of the shares of Preferred Stock then held by such Holder
for which a conversion in accordance  with the Conversion  Price would result in
an issuance of Common Stock in excess of the Issuable Maximum, the Company shall
use its best  efforts  to obtain the  Shareholder  Approval  applicable  to such
issuance  as soon as is  possible,  but in any event not later than the 60th day
after such request.

        (b) (i) Not later than three (3) Trading Days after any Conversion Date,
the Company will deliver to the Holder (i) a certificate or  certificates  which
shall be free of restrictive legends and trading  restrictions (other than those
required by Section 4.1(b) of the Purchase Agreement) representing the number of
shares of Common Stock being acquired upon the conversion of shares of Preferred
Stock (subject to reduction  pursuant to Section 5(a)(ii) hereof and Section 4.8
of the Purchase Agreement) and (ii) one or more certificates representing the

                                       -3-

<PAGE>



number  of shares of  Preferred  Stock  tendered  for  conversion  that were not
requested to be converted (or that the Company is prohibited  from  converting);
provided, however, that the Company shall not be obligated to issue certificates
evidencing the shares of Common Stock issuable upon  conversion of any shares of
Preferred Stock until certificates evidencing such shares of Preferred Stock are
either  delivered for  conversion  to the Company or any transfer  agent for the
Preferred  Stock or Common Stock, or the Holder of such Preferred Stock notifies
the Company  that such  certificates  have been lost,  stolen or  destroyed  and
provides a bond (or other  adequate  security)  reasonably  satisfactory  to the
Company to  indemnify  the Company  from any loss  incurred by it in  connection
therewith.  The Company shall, upon request of the Holder, if available, use its
best efforts to deliver any certificate or certificates required to be delivered
by the Company under this Section  electronically  through the Depository  Trust
Corporation  or another  established  clearing  corporation  performing  similar
functions.  If in  the  case  of  any  Conversion  Notice  such  certificate  or
certificates are not delivered to or as directed by the applicable Holder by the
third  Trading Day after the  Conversion  Date,  the Holder shall be entitled by
written  notice to the  Company  at any time on or before  its  receipt  of such
certificate or certificates  thereafter,  to rescind such  conversion,  in which
event the Company shall  immediately  return the  certificates  representing the
shares of Preferred Stock tendered for  conversion,  (such recission shall be in
addition to, and not in lieu of, the rights set forth elsewhere herein).

        (c) (i) The  conversion  price for each  share of  Preferred  Stock (the
"Conversion  Price") in effect on any Conversion Date shall be $5.50;  provided,
that, if the Reset Price (as defined in Section 7) is less than $6.05,  then the
Conversion  Price shall be reduced to the greater of (A) the Reset Price divided
by 1.1 and (B) $2.75  ($5.50  as so  reset,  the  "Initial  Conversion  Price");
provided, however, that, (a) if the Underlying Securities Registration Statement
is not filed on or prior to the  Filing  Date (as  defined  in the  Registration
Rights  Agreement)  (for  purposes  hereof,  in the event the Company files such
Underlying  Securities   Registration   Statement  without  complying  with  the
provisions of Section 3(a) of the  Registration  Rights  Agreement,  such filing
shall not be deemed to have occurred),  or (b) if the Company fails to file with
the  Commission  a request  for  acceleration  in  accordance  with Rule  12d1-2
promulgated  under the  Exchange  Act within  five (5) days of the date that the
Company  is  notified  (orally  or in  writing,  whichever  is  earlier)  by the
Commission  that an Underlying  Securities  Registration  Statement  will not be
"reviewed" or not subject to further review, or (c) if the Underlying Securities
Registration  Statement is not declared  effective by the Commission on or prior
to the 120th  day  after the  Original  Issue  Date,  or (d) if such  Underlying
Securities  Registration  Statement is filed with and declared  effective by the
Commission  but  thereafter  ceases  to  be  effective  as  to  all  Registrable
Securities (as such term is defined in the Registration Rights Agreement) at any
time prior to the  expiration  of the  "Effectiveness  Period"  (as such term is
defined in the Registration Rights Agreement), without being succeeded within 10
Trading Days by a subsequent Underlying Securities  Registration Statement filed
with and declared  effective by the Commission,  or (e) if the conversion rights
of the Holders are suspended for any reason,  or if a Holder is not permitted to
resell  Registrable  Securities  under  an  Underlying  Securities  Registration
Statement,  or (f) if the Company is required to convene a stockholders  meeting
pursuant to Section  5(a)(ii) and fails to convene such meeting  within the time
period  specified in such Section or does so convene such a meeting  within such
time period but fails to obtain Shareholder  Approval at such meeting, or (g) if
an amendment to the Underlying Securities Registration Statement is not filed by
the  Company  with  the  Commission  within  ten (10)  days of the  Commission's
notifying the

                                       -4-

<PAGE>



Company that such amendment is required in order for the  Underlying  Securities
Registration Statement to be declared effective,  or (h) if the Company fails to
comply with requests for conversion of any Preferred Stock into shares of Common
Stock in  accordance  with the terms  hereof (any such  failure or breach  being
referred to as an "Event" and for purposes of clauses (a), (c), (e), (f) and (h)
the date on which such Event  occurs,  or for purposes of clause (b) the date on
which such five (5) day period is  exceeded,  or for purposes of clauses (d) and
(g) the date which such 10 Trading Day-period is exceeded,  being referred to as
"Event Date"),  then each Holder shall have the right,  exercisable by notice to
the Company (an "Initial Reduced Conversion Notice"), to decrease the Conversion
Price by 1.5% as of the Event Date,  and by an additional  2.5% (on a cumulative
basis) as of each  monthly  anniversary  of such  Event  Date until the Event at
issue has been cured. The Holder can discontinue and recontinue such election as
to subsequent  periods by notice to the Company to such effect.  Any decrease in
the Conversion Price pursuant to this Section shall continue notwithstanding the
fact that the Event causing such decrease has been  subsequently  cured.  If the
Common Stock shall fail to be listed on, or be suspended  from trading from, the
Nasdaq  National  Market or Nasdaq  SmallCap  Market for three (3) Trading  Days
(which need not be consecutive  Trading  Days),  then each Holder shall have the
right,  exercisable by notice to the Company (the "Subsequent Reduced Conversion
Price Notice"), to discount the Conversion Price by 25% (which discount shall be
cumulative  with any other  discounts  herein  provided).  For purposes  hereof,
shares  of  Preferred  Stock  for  which a  conversion  has  been  requested  in
accordance  with the terms hereof shall be deemed to be outstanding  and held by
the  converting  holder if such Event,  delisting or suspension (as the case may
be)  occurs  on or prior to the date that the  Holder  receives  the  Underlying
Shares from the Company in respect thereof.

        (ii) If the Company, at any time while any shares of Preferred Stock are
outstanding,  shall (a) pay a stock dividend or otherwise make a distribution or
distributions  on shares  of its  Junior  Securities  or pari  passu  securities
payable in shares of Common Stock,  (b) subdivide  outstanding  shares of Common
Stock into a larger number of shares,  (c) combine  outstanding shares of Common
Stock  into a smaller  number of  shares,  or (d) issue by  reclassification  of
shares of Common Stock any shares of capital  stock of the Company,  the Initial
Conversion  Price shall be multiplied by a fraction of which the numerator shall
be the number of shares of Common  Stock  outstanding  before  such event and of
which the denominator  shall be the number of shares of Common Stock outstanding
after such event.  Any adjustment  made pursuant to this Section  5(c)(ii) 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,
combination or re-classification.

        (iii) If the Company,  at any time while any shares of  Preferred  Stock
are  outstanding,  shall issue rights or warrants to all holders of Common Stock
entitling  them to subscribe  for or purchase  shares of Common Stock at a price
per share less than the Per Share Market Value of the Common Stock at the record
date  mentioned  below,  the Initial  Conversion  Price shall be multiplied by a
fraction, of which the denominator shall be the number of shares of Common Stock
(excluding  treasury shares, if any) outstanding on the date of issuance of such
rights or warrants plus the number of additional  shares of Common Stock offered
for subscription or purchase,  and of which the numerator shall be the number of
shares of Common Stock (excluding  treasury  shares,  if any) outstanding on the
date of issuance of such rights or warrants

                                       -5-

<PAGE>



plus the number of shares which the aggregate offering price of the total number
of  shares so  offered  would  purchase  at such Per Share  Market  Value.  Such
adjustment shall be made whenever such rights or warrants are issued,  and shall
become  effective  immediately  after the record date for the  determination  of
stockholders  entitled to receive  such rights or  warrants.  However,  upon the
expiration  of any right or warrant to  purchase  Common  Stock the  issuance of
which resulted in an adjustment in the Initial Conversion Price pursuant to this
Section 5(c)(iii),  if any such right or warrant shall expire and shall not have
been  exercised,  the  Initial  Conversion  Price  shall  immediately  upon such
expiration  be  recomputed  and effective  immediately  upon such  expiration be
increased  to the  price  which it would  have been  (but  reflecting  any other
adjustments in the Initial  Conversion  Price made pursuant to the provisions of
this Section 5 after the issuance of such rights or warrants) had the adjustment
of the  Initial  Conversion  Price  made  upon the  issuance  of such  rights or
warrants  been made on the basis of offering for  subscription  or purchase only
that number of shares of Common Stock  actually  purchased  upon the exercise of
such rights or warrants actually exercised.

        (iv) If the Company,  at any time while  shares of  Preferred  Stock are
outstanding, shall distribute to all holders of Common Stock (and not to Holders
of  Preferred  Stock)  evidences  of its  indebtedness  or  assets  or rights or
warrants to subscribe for or purchase any security  (excluding those referred to
in Sections  5(c)(ii) and (iii)  above),  then in each such case the  Conversion
Price at which each share of Preferred  Stock shall  thereafter  be  convertible
shall be determined by multiplying  the Conversion  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
Per  Share  Market  Value of  Common  Stock  determined  as of the  record  date
mentioned above, and of which the numerator shall be such Per Share Market Value
of the Common  Stock 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 Board of Directors in good faith; provided,  however, that in the event of a
distribution  exceeding ten percent  (10%) of the net assets of the Company,  if
the  Holders of a majority  in  interest of the  Preferred  Stock  dispute  such
valuation, such fair market value shall be determined by a nationally recognized
or major  regional  investment  banking  firm or firm of  independent  certified
public accountants of recognized  standing (which may be the firm that regularly
examines the financial  statements of the Company) (an "Appraiser")  selected in
good faith by the Holders of a majority  in interest of the shares of  Preferred
Stock then outstanding;  and provided,  further, that the Company, after receipt
of the  determination  by such  Appraiser  shall  have the  right to  select  an
additional  Appraiser,  in good faith, in which case the fair market value shall
be equal to the average of the determinations by each such Appraiser.  In either
case the adjustments  shall be described in a statement  provided to the Holders
of  Preferred  Stock of the portion of assets or evidences  of  indebtedness  so
distributed or such subscription rights applicable to one share of Common Stock.
Such adjustment  shall be made whenever any such  distribution is made and shall
become effective immediately after the record date mentioned above.

        (v) All  calculations  under this Section 5 shall be made to the nearest
cent or the nearest 1/100th of a share, as the case may be.


                                       -6-

<PAGE>



        (vi)  Whenever  the  Conversion  Price is  adjusted  pursuant to Section
5(c)(i),(ii),(iii)  or (iv),  the Company shall  promptly mail to each Holder of
Preferred  Stock,  a notice  setting  forth  the  Conversion  Price  after  such
adjustment  and setting  forth a brief  statement  of the facts  requiring  such
adjustment.

        (vii)  A. In case of any  reclassification  of the  Common  Stock or any
compulsory  share exchange  pursuant to which the Common Stock is converted into
cash or property, the Holders of the Preferred Stock then outstanding shall have
the right  thereafter  to convert  such shares only into the shares of stock and
other  securities,  cash and  property  receivable  upon or deemed to be held by
holders of Common Stock following such  reclassification or share exchange,  and
the Holders of the Preferred  Stock shall be entitled upon such event to receive
such amount of securities, cash or property as the shares of the Common Stock of
the Company into which such shares of Preferred  Stock could have been converted
immediately  prior to such  reclassification  or share  exchange would have been
entitled.

        B. In the case of any  consolidation  or merger of the  Company  with or
into  another  Person  pursuant to which the Company  will not be the  surviving
entity,  any sale of all or substantially  all of the assets of the Company,  or
any sale or transfer or compulsory  share exchange  pursuant to which the Common
Stock is converted  into  securities  of an entity other than the Company,  each
Holder of Preferred Stock then  outstanding  shall have the option to either (1)
convert their shares of Preferred  Stock into shares of Common Stock pursuant to
the terms hereof prior to the effective date of such transaction, or (2) subject
to the liquidation rights of the Company's Series A Convertible Preferred Stock,
be issued shares of convertible preferred stock or convertible debentures of the
Person with which such consolidation,  merger,  sale, transfer or share exchange
takes place,  which newly issued shares or debentures (as the case may be) shall
have terms  substantially  similar in all material  respects to the terms of the
Preferred Stock  (including with respect to conversion) and shall be entitled to
all of the rights and  privileges of a Holder set forth in this  Certificate  of
Designation,  the  Registration  Rights  Agreement  and the  Purchase  Agreement
(including,  without  limitation,  as such  rights  relate  to the  acquisition,
transferability,  registration  and listing of the freely  tradeable  securities
issuable  upon a  conversion  or  exchange  thereof).  Simultaneously  with such
issuance of such  convertible  preferred  stock or convertible  debentures,  the
Holders  of  Preferred  Stock  shall have the right to  convert  such  shares of
preferred  stock  only  into  shares of stock  and  other  securities,  cash and
property  receivable  upon or  deemed  to be held by  holders  of  Common  Stock
following such consolidation, merger, sale, transfer or exchange. In the case of
clause (2) of the immediately preceding sentence,  the conversion price for such
newly issued shares or  debentures  (as the case may be) shall be based upon the
amount of  securities,  cash or property  that each share of Common  Stock would
receive in such transaction and the Conversion Price stated herein. The terms of
any such  reclassification,  consolidation,  merger, sale or exchange under this
Section shall include such terms so as to continue to give the Holders the right
to receive the  securities,  cash or property set forth in this Section upon any
conversion or redemption following such reclassification, consolidation, merger,
sale,  transfer or exchange.  This provision shall similarly apply to successive
reclassifications, consolidations, mergers, sales, transfers or share exchanges.

        (viii) If:


                                       -7-

<PAGE>



                A.      the  Company  shall  declare  a  dividend  (or any other
                        distribution) on its Common Stock; or

                B.      the Company  shall declare a special  nonrecurring  cash
                        dividend on or a redemption of its Common Stock; or

                C.      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; or

                D.      the approval of any stockholders of the Company shall be
                        required in connection with any  reclassification of the
                        Common Stock of the Company, 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,
                        of any compulsory  share of exchange  whereby the Common
                        Stock  is  converted  into  other  securities,  cash  or
                        property; or

                E.      the Company shall authorize the voluntary or involuntary
                        dissolution, liquidation or winding up of the affairs of
                        the Company;

then the Company shall cause to be filed at each office or agency maintained for
the purpose of  conversion of Preferred  Stock,  and shall cause to be mailed to
the Holders of Preferred Stock at their last addresses as they shall appear upon
the  stock  books  of the  Company,  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 or share exchange; provided, however, 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. Holders are entitled to convert shares of Preferred Stock during
the 20-day period  commencing  the date of such notice to the effective  date of
the event triggering such notice.

        (ix) If the Company (i) makes a public  announcement  that it intends to
enter into a Change of Control  Transaction or (ii) any person,  group or entity
(including  the Company,  but  excluding a Holder or any  affiliate of a Holder)
publicly announces a bona fide tender offer, exchange offer or other transaction
to purchase 50% or more of the Common Stock (such announcement being referred to
herein as a "Major  Announcement" and the date on which a Major  Announcement is
made, the "Announcement Date"), then, in the event that a Holder seeks

                                       -8-

<PAGE>



to convert shares of Preferred Stock on or following the Announcement  Date, the
Conversion  Price shall,  effective  upon the  Announcement  Date and continuing
through the earlier to occur of the consummation of the proposed  transaction or
tender offer,  exchange offer or other  transaction and the Abandonment Date (as
defined below),  be equal to the lower of (x) the average Per Share Market Value
on  the  five  Trading  Days  immediately  preceding  (but  not  including)  the
Announcement  Date and (y) the Conversion Price in effect on the Conversion Date
for such Preferred Stock.  "Abandonment Date" means with respect to any proposed
transaction  or tender offer,  exchange offer or other  transaction  for which a
public  announcement  as  contemplated by this paragraph has been made, the date
upon which the Company (in the case of clause (i) above) or the person, group or
entity (in the case of clause (ii) above) publicly  announces the termination or
abandonment  of the proposed  transaction  or tender  offer,  exchange  offer or
another transaction which caused this paragraph to become operative.

        (d) The  Company  covenants  that it will at all times  reserve and keep
available out of its authorized and unissued Common Stock solely for the purpose
of issuance upon conversion of Preferred  Stock free from  preemptive  rights or
any other actual contingent purchase rights of persons other than the Holders of
Preferred  Stock,  not less than such number of shares of Common  Stock as shall
(subject to any additional requirements of the Company as to reservation of such
shares set forth in the Purchase Agreement) be issuable (taking into account the
adjustments  and  restrictions  of  Section  5(a)  and  Section  5(c))  upon the
conversion of all outstanding  shares of Preferred Stock. The Company  covenants
that all shares of Common Stock that shall be so issuable shall,  upon issue, be
duly and validly  authorized,  issued and fully paid,  nonassessable  and freely
tradeable,  subject to the legend requirements of Section 4.1(b) of the Purchase
Agreement.

        (e) Upon a  conversion  hereunder  the Company  shall not be required to
issue stock certificates  representing  fractions of shares of Common Stock, but
must make a cash  payment in respect of any final  fraction  of a share based on
the Per Share Market Value at such time.

        (f)  The  issuance  of  certificates  for  shares  of  Common  Stock  on
conversion  of  Preferred  Stock  shall be made  without  charge to the  Holders
thereof  for any  documentary  stamp or  similar  taxes  that may be  payable in
respect of the issue or delivery of such certificate,  provided that the Company
shall not be  required  to pay any tax that may be  payable  in  respect  of any
transfer  involved in the  issuance and  delivery of any such  certificate  upon
conversion  in a name other than that of the Holder of such shares of  Preferred
Stock so  converted  and the  Company  shall not be required to issue or deliver
such certificates  unless or until the person or persons requesting the issuance
thereof  shall  have paid to the  Company  the  amount of such tax or shall have
established to the satisfaction of the Company that such tax has been paid.

        (g) Shares of  Preferred  Stock  converted  into  Common  Stock shall be
canceled  and  shall  have the  status  of  authorized  but  unissued  shares of
undesignated stock.

        (h) Any and all  notices or other  communications  or  deliveries  to be
provided by the Holders of the Preferred  Stock  hereunder,  including,  without
limitation, any Conversion Notice, shall be in writing and delivered personally,
by facsimile or sent by a nationally

                                       -9-

<PAGE>



recognized  overnight  courier service,  addressed to the attention of the Chief
Executive Officer of the Company at the facsimile telephone number or address of
the  principal  place of business  of the  Company as set forth in the  Purchase
Agreement.  Any and all  notices or other  communications  or  deliveries  to be
provided by the Company hereunder shall be in writing and delivered  personally,
by facsimile  or sent by a  nationally  recognized  overnight  courier  service,
addressed to each Holder of Preferred Stock at the facsimile telephone number or
address of such  Holder  appearing  on the books of the  Company,  or if no such
facsimile  telephone  number  or  address  appears,  at the  principal  place of
business  of the  Holder.  Any  notice  or  other  communication  or  deliveries
hereunder 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 8:00 p.m. (Eastern
Standard Time), (ii) the date 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 8:00 p.m.  (Eastern  Standard  Time) on any
date and earlier than 11:59 p.m.  (Eastern  Standard  Time) on such date,  (iii)
upon receipt, if sent by a nationally  recognized  overnight courier service, or
(iv) upon  actual  receipt by the party to whom such  notice is  required  to be
given.

               Section 6.    Redemption at Option of Company.

        (a) The Company  shall have the right,  exercisable  at any time upon 20
Trading  Days  notice (an  "Optional  Redemption  Notice") to the Holders of the
Preferred Stock given at any time after the Original Issue Date to redeem all or
any  portion of the shares of  Preferred  Stock which have not  previously  been
converted or redeemed,  at a price equal to the  Optional  Redemption  Price (as
defined  below).  The entire  Optional  Redemption  Price shall be paid in cash.
Holders  of  Preferred  Stock may  convert  (and the  Company  shall  honor such
conversions in accordance with the terms hereof) any shares of Preferred  Stock,
including  shares subject to an Optional  Redemption  Notice,  during the period
from the date  thereof  through  the 20th  Trading  Day after the  receipt of an
Optional Redemption Notice.

        (b) If any portion of the Optional Redemption Price shall not be paid by
the Company  within seven (7) calendar days after the 20th Trading Day after the
delivery of an Optional Redemption Notice,  interest shall accrue thereon at the
rate of 15% per annum until the Optional Redemption Price plus all such interest
is paid in full (any such amount shall be paid as liquidated  damages and not as
a penalty). In addition, if any portion of the Optional Redemption Price remains
unpaid for more than seven (7)  calendar  days after the date due, the Holder of
the Preferred  Stock subject to such  redemption may elect, by written notice to
the Company  given at any time  thereafter,  to either (i) demand  conversion in
accordance  with the formula and the time frame therefor set forth herein of all
or any  portion  of the  shares  of  Preferred  Stock for  which  such  Optional
Redemption Price, plus accrued liquidated damages thereof,  has not been paid in
full (the "Unpaid Redemption Shares"), in which event the Per Share Market Value
for such shares shall be the lower of the Per Share Market Value  calculated  on
the date the  Optional  Redemption  Price was  originally  due and the Per Share
Market  Value  as of  the  Holder's  written  demand  for  conversion,  or  (ii)
invalidate ab initio such redemption,  notwithstanding anything herein contained
to the contrary. If the Holder elects option (i) above, the Company shall within
three (3) Trading Days of its receipt of such election deliver to the Holder the
shares of Common Stock issuable upon conversion of the Unpaid  Redemption Shares
subject to such Holder conversion demand and

                                      -10-

<PAGE>



otherwise  perform its obligations  hereunder with respect  thereto;  or, if the
Holder elects option (ii) above,  the Company shall  promptly,  and in any event
not later than three (3) Trading  Days from  receipt of Holder's  notice of such
election, return to the Holder all of the Unpaid Redemption Shares.

        (c) The  "Optional  Redemption  Price"  shall  equal  the sum of (i) the
product of (A) the number of shares of  Preferred  Stock to be redeemed  and (B)
the product of (1) the average Per Share  Market  Value for the five (5) Trading
Days immediately preceding (x) the date of the Optional Redemption Notice or (y)
the date of payment in full by the  Company of the  Optional  Redemption  Price,
whichever is greater, and (2) the Conversion Ratio calculated on the date of the
Optional  Redemption  Notice,  and (ii) all other amounts,  costs,  expenses and
liquidated damages due in respect of such shares of Preferred Stock.

                Section 7. Definitions.  For the purposes hereof,  the following
terms shall have the following meanings:

        "Commission" means the Securities and Exchange Commission.

        "Common  Stock" means the Company's  common stock,  $.01 par value,  and
stock of any  other  class  into  which  such  shares  may  hereafter  have been
reclassified or changed.

        "Conversion  Ratio"  means,  at any  time,  a  fraction,  of  which  the
numerator is Stated Value and of which the  denominator is the Conversion  Price
at such time.

        "Exchange Act" means the Securities Exchange Act of 1934, as amended.

        "Junior  Securities"  means  the  Common  Stock  and  all  other  equity
securities  of the  Company,  other  than the  Company's  Series  A  Convertible
Preferred Stock and Series C Convertible  Preferred Stock (provided it is issued
in  a  financing  contemplated  in  Section  6(b)  to  the  Registration  Rights
Agreement) or any other security that the Holders  consent to be pari passu with
the Preferred Stock.

        "Original  Issue Date" shall mean the date of the first  issuance of any
shares of the  Preferred  Stock  regardless  of the number of  transfers  of any
particular   shares  of  Preferred   Stock  and  regardless  of  the  number  of
certificates which may be issued to evidence such Preferred Stock.

        "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  National
Market or Nasdaq SmallCap Market or any other stock exchange or quotation system
on which the  Common  Stock is then  listed or if there is no such price on such
date,  then the closing bid price on such  exchange or  quotation  system on the
date nearest  preceding such date, or (b) if the Common Stock is not listed then
on the Nasdaq National Market or Nasdaq SmallCap Market or any stock exchange or
quotation  system,  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

                                      -11-

<PAGE>



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 in interest
of the shares of the Preferred Stock; provided, however, that the Company, after
receipt of the  determination by such Appraiser,  shall have the right to select
an additional Appraiser,  in which case, the fair market value shall be equal to
the average of the determinations by each such Appraiser; and provided,  further
that all  determinations  of the Per Share Market  Value shall be  appropriately
adjusted for any stock  dividends,  stock splits or other  similar  transactions
during such period.

        "Person"   means  a   corporation,   an   association,   a  partnership,
organization,  a business, an individual,  a government or political subdivision
thereof or a governmental agency.

        "Purchase  Agreement"  means the  Convertible  Preferred  Stock Purchase
Agreement,  dated as of the  Original  Issue  Date,  among the  Company  and the
original Holder of the Preferred Stock.

        "Registration Rights Agreement" means the Registration Rights Agreement,
dated as of the Original  Issue Date,  by and among the Company and the original
Holder of the Preferred Stock.

        "Reset  Price"  means the average of Per Share  Market  Value for the 30
consecutive Trading Days immediately  preceding the 120th day after the Original
Issue Date.

        "Securities Act" means the Securities Act of 1933, as amended.

        "Trading Day" means (a) a day on which the Common Stock is traded on the
Nasdaq  National  Market or Nasdaq  SmallCap  Market or other stock  exchange or
market on which the Common Stock has been listed,  or (b) if the Common Stock is
not listed on the Nasdaq SmallCap Market or any stock exchange or 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, however, 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 any day except  Saturday,  Sunday and any day which  shall be a legal
holiday  or a day on which  banking  institutions  in the  State of New York are
authorized or required by law or other government action to close.

        "Underlying  Securities  Registration  Statement"  means a  registration
statement  under the  Securities  Act prepared by the Company and filed with the
Commission in accordance with the Registration  Rights  Agreement,  covering the
resale of the Underlying Shares and naming the Holders as "selling stockholders"
thereunder.


                                      -12-

<PAGE>



        "Underlying  Shares"  means  shares  of  Common  Stock  into  which  the
Preferred Stock are convertible in accordance with the terms hereof.








                  [Remainder of page left blank intentionally]











                                      -13-

<PAGE>




        IN WITNESS WHEREOF, the Company has caused this certificate to be signed
on its behalf by Edward J. Quilty,  its Chairman  and Chief  Executive  Officer,
this 27th day of April, 1998.

                              The Company:
                           
                              PALATIN TECHNOLOGIES, INC.




                             By:     /s/Edward  J.  Quilty
                                    ------------------------
                             Name:  Edward  J. Quilty
                             Title: Chairman   and   Chief Executive Officer


ATTEST


/s/ Stephen Wills
- -----------------
Stephen Wills
Assistant Secretary


                                       -14-

<PAGE>


                                    EXHIBIT A

                              NOTICE OF CONVERSION

(To be Executed by the Registered Holder
in order to Convert shares of Preferred Stock)

The  undersigned  hereby  elects  to  convert  the  number of shares of Series B
Convertible  Preferred Stock indicated below,  into shares of Common Stock, $.01
par value (the "Common Stock"),  of Palatin  Technologies,  Inc. (the "Company")
according to the conditions  hereof, as of the date written below. If shares are
to be issued in the name of a person  other than  undersigned,  the  undersigned
will pay all  transfer  taxes  payable with  respect  thereto and is  delivering
herewith such  certificates and opinions as reasonably  requested by the Company
in  accordance  therewith.  No fee  will  be  charged  to  the  Holder  for  any
conversion, except for such transfer taxes, if any.

Conversion calculations:


                                _________________________________________
                                Date to Effect Conversion

                                _________________________________________
                                Number  of  shares  of  Preferred  Stock  to  be
                                Converted

                                _________________________________________
                                Number of shares of Common Stock to be Issued

                                _________________________________________
                                Applicable Conversion Price

                                _________________________________________
                                Signature

                                _________________________________________
                                Name

                                _________________________________________
                                Address




PREFERRED STOCK                 [GRAPHIC OMITTED]                PREFERRED STOCK
                                [CORPORATE LOGO]


                           PALATIN TECHNOLOGIES, INC.


              Incorporated Under the Laws of the State of Delaware


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

  Certificate Number                                         Number of Shares
        B0000                                                      0,000
- -----------------------                                  -----------------------


                  TRANSFER IS RESTRICTED SEE LEGENDS ON REVERSE

                      SERIES B CONVERTIBLE PREFERRED STOCK
                                 $.01 PAR VALUE

This  Certifies That NAME OF HOLDER is the record owner of NUMBER fully paid and
non-assessable  shares  of  Series B  Convertible  Preferred  Stock  of  Palatin
Technologies,  Inc.  transferable  on the books of the Corporation by the holder
hereof in person or by Attorney  upon  surrender  of this  Certificate  properly
endorsed.

Witness the seal of the  Corporation  and the signatures of its duly  authorized
officers.

Dated April 28, 1998.



___________________                                         ____________________
Chairman                                                    Secretary

                                [GRAPHIC OMITTED]
                                [CORPORATE SEAL]

       
<PAGE>


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

NEITHER THESE  SECURITIES  NOR THE  SECURITIES  INTO WHICH THESE  SECURITIES ARE
CONVERTIBLE 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,  OR  IN  A  TRANSACTION   NOT  SUBJECT  TO,  THE   REGISTRATION
REQUIREMENTS  OF THE  SECURITIES  ACT AND IN ACCORDANCE  WITH  APPLICABLE  STATE
SECURITIES LAWS.

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

THE SHARES  REPRESENTED BY THIS CERTIFICATE ARE SUBJECT TO CERTAIN  RESTRICTIONS
ON  CONVERSION  SET FORTH IN  SECTION  4.8 OF THE  CONVERTIBLE  PREFERRED  STOCK
PURCHASE  AGREEMENT,  DATED AS OF APRIL 28, 1998, BETWEEN PALATIN  TECHNOLOGIES,
INC. (THE "COMPANY") AND THE ORIGINAL HOLDER HEREOF. A COPY OF THAT AGREEMENT IS
ON FILE AT THE PRINCIPAL OFFICE OF THE COMPANY.

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

The Company will furnish without charge to each  stockholder who so requests the
powers,  designations,  preferences, and relative,  participating,  optional, or
other  special  rights  of  each  class  of  stock  or  series  thereof  and the
qualifications, limitations or restrictions of such preferences and/or rights.

- --------------------------------------------------------------------------------
 
For Value Received, (I/we) sell, assign and transfer to ________________________
shares  of  the  Series  B  Convertible  Preferred  Stock  represented  by  this
Certificate, and appoint  ________________________________  to transfer the said
Stock on the books of Palatin Technologies, Inc. with full power of substitution
in the premises.

                                    
                                     Social   Security   Number   or   Employer
                                     Identification  Number of  transferee,  if
                                     known:____________________________________


Signed _____________________________   Dated _________________,_____



Signed _____________________________   Dated _________________,_____

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

NOTICE: THE SIGNATURE(S) ON THIS ASSIGNMENT MUST
CORRESPOND  WITH THE  NAME(S)  WRITTEN  UPON THE
FACE OF THE  CERTIFICATE,  IN EVERY  PARTICULAR,
WITHOUT ALTERATION OR ENLARGEMENT, OR ANY CHANGE
WHATEVER.

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













                 CONVERTIBLE PREFERRED STOCK PURCHASE AGREEMENT

                           PALATIN TECHNOLOGIES, INC.

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



                                 April 28, 1998


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










                              

<PAGE>




               CONVERTIBLE PREFERRED STOCK PURCHASE AGREEMENT, dated as of April
28, 1998 (this  "Agreement"),  between  Palatin  Technologies,  Inc., a Delaware
corporation  (the  "Company"),  and the parties who have executed this Agreement
and whose  names  appear on Schedule 1 hereto  (each party  listed on Schedule 1
hereto being hereinafter sometimes referred to as a "Purchaser" and collectively
as the "Purchasers").

               WHEREAS,  certain of the Purchasers and the Company have executed
one or more  Subscription  Agreements  in  connection  with the  offering by the
Company of certain Units  relating to the Company's  Series B Convertible  Stock
(the "Unit Offering");

               WHEREAS,  the  parties  to the Unit  Offering  desire  to void ab
initio all agreements and understandings relating thereto;

               WHEREAS,  subject to the terms and  conditions  set forth herein,
the  Company  desires to issue and sell to the  Purchasers  and the  Purchasers,
severally and not jointly,  desire to acquire  shares of the Company's  Series B
Convertible Preferred Stock, $.01 par value per share (the "Preferred Stock").

               IN CONSIDERATION of the mutual covenants and agreements set forth
herein and for other good and valuable  consideration,  the receipt and adequacy
of which are hereby acknowledged, the parties agree as follows:


                                    ARTICLE I

                               CERTAIN DEFINITIONS

               Section  1.1.  Certain  Definitions.  As used in this  Agreement,
unless the context  requires a different  meaning,  the following terms have the
meanings indicated in this Section 1.1:

               "Affiliate"  means, with respect to any Person,  any Person that,
directly or indirectly,  controls,  is controlled by, or is under common control
with, such Person. For purposes of this definition,  "control" (including,  with
correlative meanings, the terms "controlled by" and "under common control with")
shall mean the  possession,  directly or  indirectly,  of the power to direct or
cause the  direction of the  management  and  policies of such  Person,  whether
through the ownership of voting securities or by contract or otherwise.

                                                                           
               "Agreement"  shall  have the  meaning  set forth in the  recitals
hereto.

               "Business Day" means any day except Saturday,  Sunday and any day
which shall be a Federal legal holiday or a day on which banking institutions in
the State of New York are  authorized  or  required  by law or other  government
actions to close.


                                       -1-

<PAGE>



               "Certificate of Designation"  shall have the meaning set forth in
Section 2.1(a).

               "Closing" shall have the meaning set forth in Section 2.1(b).

               "Closing  Date"  shall  have the  meaning  set  forth in  Section
2.1(b).

               "Code" means the Internal  Revenue Code of 1986, as amended,  and
the rules and regulations thereunder as in effect on the date hereof.

               "Commission" means the Securities and Exchange Commission.

               "Common Stock" means the Company's  common stock,  par value $.01
per share.

               "Company"  shall  have the  meaning  set  forth  in the  recitals
hereto.

               "Conversion  Price"  shall  have  the  meaning  set  forth in the
Certificate of Designation.

               "Disclosure  Materials" means,  collectively,  the SEC Documents,
the schedules to this Agreement and the  Registration  Rights  Agreement and all
other  information  furnished  in writing by or on behalf of the  Company to the
Purchasers  or their  respective  agents  and  counsel  in  connection  with the
transactions contemplated by this Agreement.

               "Escrow Agent" means Robinson  Silverman Pearce Aronsohn & Berman
LLP.

               "Escrow  Agreement" means the escrow  agreement,  dated as of the
date hereof, among the Company, JNC and the Escrow Agent, in the form of Exhibit
D, as the same may be amended,  supplemented or otherwise modified in accordance
with its terms.

               "Event" shall have the meaning set forth in Section 4.14.

               "Event Date" shall have the meaning set forth in Section 4.14.


               "Exchange  Act" means the  Securities  Exchange  Act of 1934,  as
amended.

               "JNC"  means  JNC   Opportunity   Fund  Ltd.,  a  Cayman  Islands
corporation, and a Purchaser hereunder.

               "Initial  Reserve"  shall have the  meaning  set forth in Section
3.1(d).

               "Intellectual  Property  Rights" shall have the meaning set forth
in Section 3.1(q).



                                       -2-

<PAGE>



               "Legal  Opinion"  means the legal  opinion  letter of Rubin  Baum
Levin  Constant & Friedman,  outside  counsel to the  Company,  addressed to the
Purchasers, dated the Closing Date, substantially in the form attached hereto as
Exhibit C.

               "Lien"  means,  with respect to any asset,  any  mortgage,  lien,
pledge, right of first refusal,  charge, security interest or encumbrance of any
kind in or on such asset or the revenues or income thereon or therefrom.

               "Material  Adverse  Effect"  shall have the  meaning set forth in
Section 3.1(a).

               "New York  Courts"  shall have the  meaning  set forth in Section
5.8.

               "Original  Issue  Date"  shall  mean the  first  issuance  of any
Shares,  regardless  of the  number of  transfers  of any  particular  Share and
regardless  of the number of  certificates  which may be issued to evidence  any
particular Share.

               "Person"  means  an  individual  or a  corporation,  partnership,
trust,  incorporated  or  unincorporated  association,  joint  venture,  limited
liability  company,  joint stock company,  government (or an agency or political
subdivision thereof) or other entity of any kind.

               "Preferred  Stock"  shall  have  the  meaning  set  forth  in the
recitals hereto.

               "Proceeding"  means an  action,  claim,  suit,  investigation  or
proceeding   (including,   without  limitation,   an  investigation  or  partial
proceeding, such as a deposition).

               "Purchaser(s)"  shall have the meaning set forth in the  recitals
hereto.

               "Registration  Rights  Agreement" means the  registration  rights
agreement, dated as of the date hereof, among the Company and the Purchasers, in
the form of Exhibit B, as the same may be  amended,  supplemented  or  otherwise
modified in accordance with its terms.

               "Required  Approvals" shall have the meaning set forth in Section
3.1(f).

               "SEC  Documents"  shall  have the  meaning  set forth in  Section
3.1(k).

               "Securities" means,  collectively,  the Shares and the Underlying
Shares.

               "Securities Act" means the Securities Act of 1933, as amended.

               "Shares"  means the  shares of  Preferred  Stock to be  purchased
pursuant to this Agreement.

               "Stated Value" means $100.


                                       -3-

<PAGE>




               "Subsequent  Financing"  shall  have  the  meaning  set  forth in
Section 4.9.

               "Subsequent Financing Notice" shall have the meaning set forth in
Section 4.9.

               "Subsidiaries"  shall  have the  meaning  set  forth  in  Section
3.1(a).

               "Trading Day" shall have the meaning set forth in the Certificate
of Designation.

               "Transaction Documents" means collectively,  this Agreement,  the
Registration  Rights  Agreement,  the  Certificate of Designation and the Escrow
Agreement.

               "Underlying  Shares"  means the shares of Common  Stock  issuable
upon conversion of the Shares in accordance with the terms of the Certificate of
Designation.

               "Underlying   Securities    Registration   Statement"   means   a
registration  statement  under the  Securities  Act  prepared by the Company and
filed with the Commission in accordance with the Registration  Rights Agreement,
covering the resale of the Underlying Shares and naming the holder or holders of
such Underlying Shares as "selling stockholders" thereunder.

               "Unit  Offering" shall have the meaning set forth in the recitals
hereto.


                                   ARTICLE II

                               PURCHASE OF SHARES

               Section 2.1.  Purchase of Shares; Closing.

               (a)  Subject  to the  terms  and  conditions  set  forth  in this
Agreement, the Company shall issue and sell to the Purchasers and the Purchasers
shall,  severally and not jointly,  purchase up to an aggregate of 18,875 Shares
for an  aggregate  purchase  price of  $1,887,500.  The  Shares  shall  have the
respective  rights,  preferences  and  privileges  set  forth in  Exhibit A (the
"Certificate of Designation").

               (b) The  closing  of the  purchase  and sale of the  Shares  (the
"Closing")  shall  take  place on such date as the  parties  shall  agree at the
offices of the Escrow  Agent,  1290 Avenue of the Americas,  New York,  New York
10104,  in  accordance  with the Escrow  Agreement.  The date of the  Closing is
hereinafter referred to as the "Closing Date."

               (c) At the Closing the parties shall deliver the following  items
(with  respect  to the  Closing  of the  purchase  and sale of the  Shares to be
acquired by JNC hereunder,  such deliveries will be made prior to the Closing in
accordance with and subject to the terms and


                                       -4-

<PAGE>



conditions of the Escrow  Agreement):  (i) the Company shall deliver or cause to
be delivered (A) stock  certificates  representing the aggregate Stated Value of
the Shares to be acquired  hereunder by each  Purchaser as set forth in Schedule
1, registered in the name of such Purchaser and (B) the Legal Opinion; (ii) each
Purchaser  shall deliver or cause to be delivered  immediately  available  funds
equal to the aggregate  Stated Value of Shares to be acquired by such  Purchaser
as set forth in Schedule 1, in United States dollars and (iii) each party hereto
shall  deliver  or  cause  to  be  delivered  all  other  executed  instruments,
agreements  and  certificates  as are  required to be  delivered  by or on their
behalf at the Closing,  including without  limitation,  this Purchase Agreement,
the Registration  Rights Agreement and, with respect to the Company and JNC, the
Escrow  Agreement.  The  Company  acknowledges  that  its  outside  counsel  has
received,  and the  Purchasers  (other than JNC) and the Company  agree that the
Company's  outside counsel shall continue to hold,  $287,500,  representing  the
Purchase Price to be paid at Closing by such other Purchasers.


                                   ARTICLE III

                         REPRESENTATIONS AND WARRANTIES

               Section 3.1.  Representations and Warranties of the Company.  The
Company hereby represents and warrants to the Purchasers as follows:

               (a) Organization and Qualification. The Company is a corporation,
duly  incorporated,  validly existing and in good standing under the laws of the
jurisdiction  of its  incorporation,  with the  requisite  corporate  power  and
authority to own and use its  properties and assets and to carry on its business
as currently conducted.  The Company has no subsidiaries other than as set forth
in Schedule 3.1(a) (collectively, the "Subsidiaries").  Each of the Subsidiaries
is a corporation, duly incorporated, validly existing and in good standing under
the laws of the jurisdiction of its incorporation,  with the requisite corporate
power and authority to own and use its properties and assets and to carry on its
business as currently  conducted.  Each of the Company and the  Subsidiaries  is
duly  qualified to do business and is in good standing as a foreign  corporation
in each  jurisdiction in which the nature of the business  conducted or property
owned by it makes such qualification  necessary,  except where the failure to be
so qualified or in good standing, as the case may be, could not, individually or
in the aggregate, (x) adversely affect the legality,  validity or enforceability
of the Shares or any Transaction Document, (y) have a material adverse effect on
the  results of  operations,  assets,  prospects,  or  condition  (financial  or
otherwise)  of the  Company  and  the  Subsidiaries,  taken  as a  whole  or (z)
adversely  impair the  Company's  ability to perform fully on a timely basis its
obligations under any Transaction  Document (any of (x), (y) or (z), a "Material
Adverse Effect").

               (b)  Authorization;  Enforcement.  The Company has the  requisite
corporate  power and authority to enter into and to consummate the  transactions
contemplated  by the  Transaction  Documents  and to  otherwise  carry  out  its
obligations thereunder. The execution and


                                       -5-

<PAGE>



delivery of each Transaction  Document by the Company and the consummation by it
of the  transactions  contemplated  thereby  have  been duly  authorized  by all
necessary action on the part of the Company.  Each Transaction Document has been
duly  executed by the Company and, when  delivered in accordance  with the terms
hereof and of the Escrow Agreement,  each Transaction  Document shall constitute
the legal, valid and binding obligation of the Company  enforceable  against the
Company in accordance with its terms.  Neither the Company nor any Subsidiary is
in violation of any provision of its respective  certificate  of  incorporation,
bylaws or other charter documents.

               (c)  Capitalization.   The  authorized,  issued  and  outstanding
capital  stock of the  Company  and  each of the  Subsidiaries  is set  forth in
Schedule 3.1(c). No shares of Common Stock are entitled to preemptive or similar
rights.  Except as  specifically  disclosed  in  Schedule  3.1(c),  there are no
outstanding options,  warrants,  rights to subscribe to, calls or commitments of
any character whatsoever relating to, or, except as a result of the purchase and
sale of the Shares hereunder, securities, rights or obligations convertible into
or exchangeable for, or giving any Person any right to subscribe for or acquire,
any  shares of Common  Stock,  or  contracts,  commitments,  understandings,  or
arrangements  by which the Company or any  Subsidiary  is or may become bound to
issue additional  shares of Common Stock or securities or rights  convertible or
exchangeable  into shares of Common  Stock.  To the  knowledge  of the  Company,
except as  specifically  disclosed in the SEC Documents or Schedule  3.1(c),  no
Person or group of Persons  beneficially  owns (as  determined  pursuant to Rule
13d-3  promulgated  under  the  Exchange  Act) or has the  right to  acquire  by
agreement with or by obligation binding upon the Company beneficial ownership of
in excess of 5% of the Common Stock.

               (d) Issuance of Securities.  The Shares are duly  authorized and,
when issued in accordance with the terms hereof,  shall be validly issued, fully
paid and nonassessable,  free and clear of all Liens. The Company has and at all
times while any Shares are outstanding will maintain an adequate reserve of duly
authorized  shares  of  Common  Stock to enable  it to  perform  its  conversion
obligations under the Certificate of Designation, which reserve shall be no less
than 175% of the  number of shares  of Common  Stock as would be  issuable  upon
conversion  in full of the  Shares,  assuming  such  conversion  occurred on the
Original Issue Date or the Effective Date (as defined in the Registration Rights
Agreement),  whichever yields a lower Conversion Price (the "Initial  Reserve").
If at any time the sum of the  number of shares of Common  Stock  issuable  upon
conversion  in full of the then  outstanding  Shares  exceeds 85% of the Initial
Reserve,  then the Company  shall duly  reserve  175% of the number of shares of
Common Stock equal to such excess to fulfill such  obligations.  This obligation
shall similarly apply to successive excesses. When issued in accordance with the
Certificate  of  Designation  the  Underlying  Shares  will be duly  authorized,
validly issued, fully paid and nonassessable, and free and clear of all Liens.

               (e) No Conflicts. The execution,  delivery and performance of the
Transaction  Documents by the Company and the consummation by the Company of the
transactions  contemplated  thereby  do not and  will not (i)  conflict  with or
violate any  provision  of its  certificate  of  incorporation,  bylaws or other
charter  documents  (each as amended  through the date hereof),  (ii) subject to
obtaining  the  consents  referred  to in  Section  3.1(f),  conflict  with,  or
constitute a


                                       -6-

<PAGE>



default (or an event  which with notice or lapse of time or both would  become a
default)  under,  or  give to  others  any  rights  of  termination,  amendment,
acceleration  or  cancellation  of,  any  agreement,   indenture  or  instrument
(evidencing  a Company debt or  otherwise) to which the Company is a party or by
which any property or asset of the Company is bound or affected, or (iii) result
in a violation of any law, rule, regulation, order, judgment, injunction, decree
or other restriction of any court or governmental authority to which the Company
is subject (including federal and state securities laws and regulations),  or by
which any property or asset of the Company is bound or  affected;  except in the
case of each of clauses  (ii) and (iii),  as could not,  individually  or in the
aggregate,  have or result in a Material  Adverse  Effect.  The  business of the
Company is not being conducted in violation of any law,  ordinance or regulation
of any governmental authority,  except for violations which, individually and in
the aggregate, could not have or result in a Material Adverse Effect.

               (f)  Consents  and   Approvals.   Neither  the  Company  nor  any
Subsidiary is required to obtain any consent, waiver, authorization or order of,
or make any filing or  registration  with,  any court or other  federal,  state,
local,  foreign or other  governmental  authority or other Person in  connection
with the execution,  delivery and  performance by the Company of the Transaction
Documents,  other than (i) the filing of the Certificate of Designation with the
Secretary  of  State of  Delaware,  (ii) the  filing  of one or more  Underlying
Securities  Registration  Statements  with  the  Commission  and the  making  of
applicable  blue-sky  filings  under state  securities  laws with respect to the
Securities and the transactions contemplated hereby, each as contemplated hereby
and by the Registration Rights Agreement,  (iii) the application for the listing
of the  Underlying  Shares on the  Nasdaq  SmallCap  Market  (and on each  other
national  securities  exchange,  market or trading  facility on which the Common
Stock is then  listed),  and (iv)  other  than,  in all other  cases,  where the
failure to obtain such consent,  waiver,  authorization  or order, or to give or
make such notice or filing, could not, individually or in the aggregate, have or
result in a Material Adverse Effect (the "Required Approvals").

               (g) Litigation;  Proceedings. Except as specifically disclosed in
the  Disclosure  Materials,  there is no  action,  suit,  notice  of  violation,
proceeding or  investigation  pending or, to the best  knowledge of the Company,
threatened against or affecting the Company or any of its Subsidiaries or any of
their   respective   properties   before  or  by  any  court,   governmental  or
administrative agency or regulatory authority (federal,  state, county, local or
foreign)  which (i) adversely  affects or challenges  the legality,  validity or
enforceability  of any  Transaction  Document or the  Securities  or (ii) could,
individually or in the aggregate, have or result in a Material Adverse Effect.

               (h)  No  Default  or  Violation.  Neither  the  Company  nor  any
Subsidiary (i) is in default under or in violation of (or has received notice of
a  claim  that  it is in  default  under  or  that  it is in  violation  of) any
indenture,  loan or credit  agreement or any other  agreement or  instrument  to
which it is a party or by which it or any of its properties is bound, (ii) is in
violation of any order of any court,  arbitrator or governmental  body, or (iii)
is in  violation  of  any  statute,  rule  or  regulation  of  any  governmental
authority, except as could not, individually or in the aggregate, have or result
in a Material Adverse Effect.


                                       -7-

<PAGE>



               (i)   Private   Offering.    Assuming   the   accuracy   of   the
representations   and  warranties  of  the  Purchasers   contained  in  Sections
3.2(b)-3.2(f),  the offering, issuance or sale of the Securities as contemplated
hereunder are exempt from the registration requirements of the Securities Act.

               (j) Certain Fees.  Except for fees payable to Paramount  Capital,
Inc.,  no fees or  commissions  will be  payable by the  Company to any  broker,
financial advisor or consultant,  finder, investment banker or Person performing
a similar  function,  placement  agent, or bank with respect to the transactions
contemplated  hereby.  The Purchasers  shall have no obligation  with respect to
such fees or  commissions  or with respect to any claims made by or on behalf of
other Persons for fees or  commissions  of a type  contemplated  in this Section
that may be due in connection with the  transactions  contemplated  hereby.  The
Company  shall  indemnify  and hold  harmless  each  Purchaser,  its  respective
employees,  officers,  directors,  agents,  and partners,  and their  respective
Affiliates,  from and against all claims, losses,  damages, costs (including the
costs of preparation and reasonable  attorney's  fees) and expenses  suffered in
respect of any such claimed or existing fees, as and when incurred.

               (k) SEC Documents;  Financial Statements;  No Adverse Change. The
Company has filed all reports required to be filed by it under the Exchange Act,
including  pursuant to Section 13(a) or 15(d)  thereof,  since July 1, 1996 (the
foregoing   materials  being  collectively   referred  to  herein  as  the  "SEC
Documents") on a timely basis or has received a valid  extension of such time of
filing and has filed any such SEC Documents  prior to the expiration of any such
extension.  As of their  respective  dates,  the SEC  Documents  complied in all
material  respects with the  requirements of the Securities Act and the Exchange
Act and the rules and regulations of the Commission promulgated thereunder,  and
none of the SEC  Documents,  when filed,  contained  any untrue  statement  of a
material fact or omitted to state a material fact required to be stated  therein
or  necessary  in  order  to  make  the  statements  therein,  in  light  of the
circumstances  under  which  they  were  made,  not  misleading.  The  financial
statements of the Company  included in the SEC Documents  comply in all material
respects with applicable  accounting  requirements and the rules and regulations
of the Commission  with respect  thereto.  Such financial  statements  have been
prepared in accordance with generally accepted accounting  principles applied on
a  consistent  basis  during the periods  involved,  except as may be  otherwise
specified in such financial  statements or the notes thereto, and fairly present
in all material respects the financial position of the Company as of and for the
dates thereof and the results of  operations,  retained  earnings and cash flows
for the periods then ended,  subject,  in the case of unaudited  statements,  to
normal year-end audit  adjustments.  Since the date of the financial  statements
included in the Company's  Quarterly  Report on Form 10-QSB for the period ended
December 31, 1997, (a) there has been no event,  occurrence or development  that
has had or that could have or result in a Material Adverse Effect, (b) there has
been no material  change in the Company's  accounting  principles,  practices or
methods and (c) the Company has  conducted  its  business  only in the  ordinary
course of such  business.  The Company last filed audited  financial  statements
with the  Commission  for the  fiscal  year  ended  June 30,  1997,  and has not
received any comments from the Commission in respect thereof.



                                       -8-

<PAGE>



               (l) Seniority. Except for the Company's Series A Preferred Stock,
no class of equity securities of the Company is senior to the Shares in right of
payment, whether upon liquidation, dissolution or otherwise.

               (m) Form S-3 Eligibility. The Company is, and at the Closing Date
will be,  eligible to register  securities for resale with the Commission  under
Form S-3 promulgated under the Securities Act.

               (n)  Investment  Company.  The  Company  is  not,  and  is not an
"Affiliate  person"  of, an  "investment  company"  within  the  meaning  of the
Investment Company Act of 1940, as amended.

               (o)  Exclusivity.  The Company shall not issue or sell  Preferred
Stock to any Person other than the Purchasers.

               (p) Listing and Maintenance  Requirements  Compliance.  Since the
date that the listing of the Common Stock was initially  approved for trading on
the Nasdaq  SmallCap  Market,  the Company has not received  notice  (written or
oral) from any stock  exchange,  market or trading  facility on which the Common
Stock is or has been listed (or on which it is or has been quoted) to the effect
that  the  Company  is  not  in  compliance  with  the  listing  or  maintenance
requirements  of such exchange,  market or trading  facility.  The Company is in
compliance with all such maintenance requirements.

               (q) Patents  and  Trademarks.  The Company  has, or has rights to
use, all  patents,  patent  applications,  trademarks,  trademark  applications,
service  marks,  trade  names,  copyrights,  licenses,  trade  secrets and other
intellectual  property rights which are necessary for use in connection with its
business  or which the failure to so have would have a Material  Adverse  Effect
(collectively, the "Intellectual Property Rights"). To the best knowledge of the
Company,  none of the Intellectual Property Rights infringe on any rights of any
other  Person,  and the Company  either owns or has duly  licensed or  otherwise
acquired all necessary rights with respect to the Intellectual  Property Rights.
The  Company  has not  received  any notice from any third party of any claim of
infringement by the Company of any of the Intellectual  Property Rights, and has
no  reason  to  believe  there  is any  basis  for any such  claim.  To the best
knowledge of the Company, there is no existing infringement by another Person on
any of the Intellectual Property Rights.

               (r) Registration Rights. Except as and to the extent set forth on
Schedule 6(b) to the Registration Rights Agreement,  the Company has not granted
or agreed to grant any Person any rights  (including  "piggy-back"  registration
rights) to have any  securities of the Company  registered  with the  Commission
which have not been satisfied.

               (s)  Conversion  Procedures.  Other  than the  Conversion  Notice
attached to the Certificate of Designation,  there are no other procedures to be
followed or legal opinions or other


                                       -9-

<PAGE>



documents  required be  delivered in order to permit  holders to exercise  their
right to convert  Shares in  accordance  with the time  periods set forth in the
Certificate of Designation.

               (t)  Disclosure.  All  information  relating to or concerning the
Company  set forth in the  Transaction  Documents  or the  Disclosure  Materials
(other than the SEC Documents) is true and correct in all material  respects and
does  not  fail to  state  any  material  fact  necessary  in  order to make the
statements  herein or therein,  in light of the  circumstances  under which they
were  made,  not  misleading.  The  Company  confirms  that,  to the best of its
knowledge,  it has not provided any Purchaser or any of such Purchaser's  agents
or  counsel  any  information  that  constitutes  or might  constitute  material
nonpublic information.  The Company understands and confirms that the Purchasers
shall be relying on the foregoing  representation  in effecting  transactions in
securities of the Company.

               Section 3.2.  Representations  and Warranties of the  Purchasers.
Each Purchaser hereby, severally and not jointly, represents and warrants to the
Company as follows:

               (a) Organization; Authority. If such Purchaser is an entity, such
Purchaser is an entity  organized,  validly  existing and in good standing under
the laws of the  jurisdiction of its  organization  with the requisite power and
authority to enter into and to consummate the  transactions  contemplated by the
Transaction  Documents  to which it is a party and to carry out its  obligations
thereunder. If such Purchaser is an individual,  such Purchaser has the capacity
to enter into and to consummate the transactions contemplated by the Transaction
Documents  to which it is a party and to carry out its  obligations  thereunder.
The purchase of the  Securities to be acquired by such  Purchaser  hereunder has
been duly authorized by all necessary action on the part of such Purchaser. Each
of this Agreement,  the  Registration  Rights Agreement and, with respect to JNC
only,  the Escrow  Agreement has been duly executed by such  Purchaser and, when
delivered  by such  Purchaser  in  accordance  with the terms  hereof and,  with
respect to JNC, of the Escrow Agreement,  shall constitute the valid and legally
binding obligation of such Purchaser,  enforceable against it in accordance with
its terms.

               (b) Investment Intent. Such Purchaser is acquiring the Securities
to be acquired by it hereunder for its own account for investment  purposes only
and not with a view to or for  distributing  or reselling such Securities or any
part  thereof  or  interest  therein,   without  prejudice,   however,  to  such
Purchaser's  right,  subject  to  the  provisions  of  this  Agreement  and  the
Registration Rights Agreement,  at all times to sell or otherwise dispose of all
or any part of such Securities pursuant to an effective  registration  statement
under the Securities Act and in compliance with applicable state securities laws
or under an exemption from such registration.

               (c) Purchaser  Status. At the time such Purchaser was offered the
Securities  to be acquired by it hereunder,  it was, at the date hereof,  it is,
and at the Closing Date, it will be, an "accredited investor" as defined in Rule
501(a) under the Securities Act.

               (d)  Experience of  Purchaser.  Such  Purchaser,  either alone or
together  with its  representatives,  has  such  knowledge,  sophistication  and
experience in business and financial


                                      -10-

<PAGE>



matters  so  as to be  capable  of  evaluating  the  merits  and  risks  of  the
prospective  investment in the  Securities,  and has so evaluated the merits and
risks of such investment.

               (e)  Ability  of  Purchaser  to  Bear  Risk of  Investment.  Such
Purchaser acknowledges that an investment in the Securities to be acquired by it
hereunder is speculative  and involves a high degree of risk.  Such Purchaser is
able to bear the economic risk of an investment  in the  Securities  and, at the
present time, is able to afford a complete loss of such investment.

               (f) Access to Information. Such Purchaser acknowledges receipt of
the Disclosure  Materials and further acknowledges that it has been afforded (i)
the  opportunity  to ask such  questions as it has deemed  necessary  of, and to
receive answers from,  representatives  of the Company  concerning the terms and
conditions  of the  offering  of the  Securities,  and the  merits  and risks of
investing in the  Securities,  (ii) access to information  about the Company and
the Company's financial condition, results of operations,  business, properties,
management and prospects sufficient to enable it to evaluate its investment; and
(iii) the  opportunity to obtain such additional  information  which the Company
possesses  or can  acquire  without  unreasonable  effort  or  expense  that  is
necessary to make an informed investment decision with respect to the investment
and to verify the accuracy and completeness of the information  contained in the
Disclosure  Materials.  Neither  such  inquiries  nor  any  other  investigation
conducted by or on behalf of such  Purchaser or its  representatives,  agents or
counsel  shall  modify,  amend or affect such  Purchaser's  right to rely on the
truth,  accuracy and completeness of the Disclosure  Materials and the Company's
representations and warranties contained in the Transaction Documents.

               (g) Reliance.  Such Purchaser  understands and acknowledges  that
(i) the  Securities to be acquired by it hereunder are being offered and sold to
it without  registration under the Securities Act in a private placement that is
exempt  from the  registration  provisions  of the  Securities  Act and (ii) the
availability  of such  exemption,  depends in part on, and the Company will rely
upon the accuracy and  truthfulness of, the foregoing  representations  and such
Purchaser hereby consents to such reliance.

               The Company acknowledges and agrees that the Purchasers make no
representations  or  warranties  with respect to the  transactions  contemplated
hereby other than those specifically set forth in this Section 3.2.


                                   ARTICLE IV

                         OTHER AGREEMENTS OF THE PARTIES

               Section 4.1. Transfer  Restrictions.  (a) The Securities may only
be  disposed  of  pursuant  to an  effective  registration  statement  under the
Securities Act, to the Company or pursuant to an available  exemption from or in
a  transaction  not  subject  to  the  registration   requirements  thereof.  In
connection  with any  transfer  of any  Securities  other  than  pursuant  to an
effective  registration statement or to the Company, the Company may require the
transferor


                                      -11-

<PAGE>



thereof to provide to the Company an opinion of counsel selected and paid for by
the  transferor,  the form and  substance of which  opinion  shall be reasonably
satisfactory  to the Company,  to the effect that such transfer does not require
registration  under the  Securities  Act.  Notwithstanding  the  foregoing,  the
Company  hereby  consents to and agrees to register  any transfer of Shares by a
Purchaser to an Affiliate thereof and to any transfers among any such Affiliates
provided  the  transferee  certifies  to the Company  that it is an  "accredited
investor" as defined in Rule 501(a) under the Securities Act. Any such Affiliate
transferee  shall  have  the  rights  of the  Purchaser  under  the  Transaction
Documents.

               (b)  The  Purchasers  agree  to the  imprinting,  so  long  as is
required by this Section  4.1(b),  of the following  legend on the  certificates
representing the Securities:

               NEITHER  THESE  SECURITIES  NOR THE  SECURITIES  INTO WHICH THESE
        SECURITIES ARE CONVERTIBLE  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, OR
        IN A TRANSACTION  NOT SUBJECT TO, THE  REGISTRATION  REQUIREMENTS OF THE
        SECURITIES ACT AND IN ACCORDANCE WITH APPLICABLE STATE SECURITIES LAWS.

               THE SHARES REPRESENTED BY THIS CERTIFICATE ARE SUBJECT TO CERTAIN
        RESTRICTIONS  ON CONVERSION SET FORTH IN SECTION 4.8 OF THE  CONVERTIBLE
        PREFERRED STOCK PURCHASE AGREEMENT,  DATED AS OF APRIL 28, 1998, BETWEEN
        PALATIN  TECHNOLOGIES,  INC.  (THE  "COMPANY")  AND THE ORIGINAL  HOLDER
        HEREOF.  A COPY OF THAT AGREEMENT IS ON FILE AT THE PRINCIPAL  OFFICE OF
        THE COMPANY.

               Underlying Shares shall not contain the legend set forth above or
any other legend if the  conversion  of Shares or other  issuances of Underlying
Shares,  as the case may be, occurs at any time while an  Underlying  Securities
Registration  Statement is effective  under the  Securities Act or, in the event
there is not an effective Underlying Securities  Registration  Statement at such
time,  if in the opinion of counsel to the Company  such legend is not  required
under  applicable   requirements  of  the  Securities  Act  (including  judicial
interpretations and pronouncements  issued by the staff of the Commission).  The
Company agrees that it will provide Purchasers, upon request, with a certificate
or certificates  representing  Underlying Shares,  free from such legend at such
time as such legend is no longer  required  hereunder.  The Company may not make
any notation on its records or give  instructions  to any transfer  agent of the
Company  which  enlarge the  restrictions  of transfer set forth in this Section
4.1(b).



                                      -12-

<PAGE>



               Section 4.2. Acknowledgment of Dilution. The Company acknowledges
that the issuance of Underlying  Shares upon conversion of the Shares may result
in dilution of the  outstanding  shares of Common Stock,  which  dilution may be
substantial under certain market  conditions.  The Company further  acknowledges
that  its  obligation  to  issue  Underlying   Shares  in  accordance  with  the
Certificate  of  Designation  is  unconditional  and absolute  regardless of the
effect of any such dilution.

               Section 4.3. Furnishing of Information.  As long as any Purchaser
owns Securities,  the Company  covenants to timely file (or obtain extensions in
respect  thereof  and file  within the  applicable  grace  period)  all  reports
required  to be filed by the Company  after the date hereof  pursuant to Section
13(a) or 15(d) of the  Exchange  Act.  If at any time prior to the date on which
all  Purchasers  may resell all of their  respective  Underlying  Shares without
volume restrictions pursuant to Rule 144(k) promulgated under the Securities Act
(as determined by counsel to the Company pursuant to a written opinion letter to
such effect,  addressed and  acceptable to the Company's  transfer agent for the
benefit of and  enforceable  by the  Purchasers)  the Company is not required to
file  reports  pursuant  to such  sections,  it will  prepare and furnish to the
Purchasers  and  make  publicly   available  in  accordance   with  Rule  144(c)
promulgated under the Securities Act annual and quarterly financial  statements,
together with a discussion and analysis of such financial statements in form and
substance  substantially similar to those that would otherwise be required to be
included in reports  required by Section  13(a) or 15(d) of the  Exchange Act in
the time period  that such  filings  would have been  required to have been made
under the Exchange  Act. The Company  further  covenants  that it will take such
further action as any holder of Securities may  reasonably  request,  all to the
extent  required  from time to time to  enable  such  Person to sell  Securities
without  registration  under the  Securities  Act within the  limitation  of the
exemptions  provided by Rule 144 promulgated under the Securities Act, including
the legal opinion referenced above in this Section. Upon the request of any such
Person,  the Company shall deliver to such Person a written  certification  of a
duly authorized officer as to whether it has complied with such requirements.

               Section 4.4. Use of  Proceeds.  The Company  shall use all of the
proceeds from the sale of the  Securities for working  capital  purposes and not
for the satisfaction of any portion of Company debt in excess of an aggregate of
$1,200,000  or to redeem any  Company  equity or  equity-equivalent  securities.
Pending  application of the proceeds of this  placement in the manner  permitted
hereby the Company will invest such proceeds in interest bearing accounts and/or
short-term, investment grade interest bearing securities.

               Section 4.5. Listing of Underlying  Shares. The Company shall (a)
not later than the fifth  Business  Day  following  the Closing Date prepare and
file with the Nasdaq SmallCap  Market (as well as any other national  securities
exchange,  market or trading  facility on which the Common Stock is then listed)
an additional shares listing application covering at least 175% of the number of
Underlying  Shares as would be issuable upon a conversion in full of the Shares,
assuming such conversion occurred on the Original Issue Date, (b) take all steps
necessary to cause such shares to be approved for listing on the Nasdaq SmallCap
Market (as well as on any other national securities exchange,  market or trading
facility on which the Common Stock is then


                                      -13-

<PAGE>



listed)  as soon as  possible  thereafter,  and (c)  provide  to the  Purchasers
evidence of such  listing,  and the Company  shall  maintain  the listing of its
Common Stock on such exchange or market. In addition,  if at any time the number
of shares of Common Stock issuable on conversion of all then outstanding  Shares
is greater than the number of shares of Common Stock theretofore listed with the
Nasdaq SmallCap Market (and any such other national securities exchange,  market
or trading facility), the Company shall promptly take such action (including the
actions  described  in the  preceding  sentence)  to file an  additional  shares
listing application with the Nasdaq SmallCap Market (and any such other national
securities  exchange,  market or trading facility) covering at least a number of
shares  equal to 175% of the  number  of  Underlying  Shares  as  would  then be
issuable upon a conversion in full of the Shares.

               Section 4.6. Integration. The Company shall not and shall use its
best efforts to ensure that no Affiliate  shall sell,  offer for sale or solicit
offers to buy or  otherwise  negotiate in respect of any security (as defined in
Section 2 of the Securities Act) that would be integrated with the offer or sale
of the  Securities  in a manner that would  require the  registration  under the
Securities Act of the issue, offer or sale of the Securities to the Purchasers.

               Section 4.7.  Increase in Authorized  Shares. At such time as the
Company would be, if a notice of  conversion  were to be delivered on such date,
precluded from  converting in full all of the Shares that remain  unconverted at
such  date  due to the  unavailability  of a  sufficient  number  of  shares  of
authorized but unissued or re-acquired  Common Stock,  the Board of Directors of
the Company  shall  promptly  (and in any case within 30 Business Days from such
date)  prepare  and mail to the  stockholders  of the  Company  proxy  materials
requesting  authorization to amend the Company's certificate of incorporation to
increase the number of shares of Common Stock which the Company is authorized to
issue to at least a  number  of  shares  equal to the sum of (i) all  shares  of
Common  Stock  then  outstanding,  (ii) the  number of  shares  of Common  Stock
issuable  on  account  of all  outstanding  warrants,  options  and  convertible
securities  (other  than the  Preferred  Stock)  and on  account  of all  shares
reserved under any stock option,  stock  purchase,  warrant or similar plan, and
(iii) 175% of the number of  Underlying  Shares as would then be issuable upon a
conversion in full of the then  outstanding  Shares in accordance with the terms
of this Agreement and the Certificate of Designation.  In connection  therewith,
the Board of  Directors  shall (x) adopt  proper  resolutions  authorizing  such
increase,  (y)  recommend to and  otherwise use its best efforts to promptly and
duly  obtain  stockholder  approval  to carry out such  resolutions  (and hold a
special meeting of the stockholders no later than the 60th day after delivery of
the proxy materials  relating to such meeting) and (z) within 5 Business Days of
obtaining such stockholder  authorization,  file an appropriate amendment to the
Company's certificate of incorporation to evidence such increase. If the Company
does not receive stockholder  approval for such increase or the Company fails to
file an appropriate  amendment in the time provided  therefor by the immediately
preceding  sentence,  then the provisions of Section 5(c) of the  Certificate of
Designation and Section 4.14 hereof shall apply.

               Section 4.8. Purchaser  Ownership of Common Stock. JNC agrees not
to use its ability to convert  Shares to the extent such  conversion or exercise
would result in it beneficially owning (as determined in accordance with Section
13(d) of the Exchange Act and the rules


                                      -14-

<PAGE>



thereunder)  in excess of 4.999% of the then  issued and  outstanding  shares of
Common Stock, including shares issuable upon conversion of the Shares held by it
after application of this Section.  To the extent that the limitation  contained
in this Section applies,  the determination of whether Shares are convertible by
JNC (in  relation  to other  securities  owned by it) and of  which  Shares  are
convertible shall be in the sole discretion of JNC, and the submission of Shares
for conversion shall be deemed to be JNC's  determination of whether such Shares
are  convertible (in relation to other  securities  owned by it) and of which of
its Shares are  convertible,  in each case subject to such aggregate  percentage
limitation,  and the Company  shall have no  obligation to verify or confirm the
accuracy of such  determination.  Nothing  contained  herein  shall be deemed to
restrict the right of JNC to convert Shares at such time as such conversion will
not violate the  provisions of this Section.  The provisions of this Section may
be waived by JNC upon not less than 75 days prior notice to the Company, and the
provisions  of this  Section  shall  continue  to apply  until such 75th day (or
later, if stated in the notice of waiver).

               Section 4.9. Right of  Participation;  Subsequent  Registrations.
(a) The Company shall not,  other than  pursuant to the  currently  contemplated
strategic  arrangement  described in Schedule  6(b) to the  Registration  Rights
Agreement,  directly or  indirectly,  without the prior written  consent of JNC,
offer, sell, grant any option to purchase,  or otherwise dispose of (or announce
any offer,  sale,  grant or any option to purchase or other  disposition) any of
its or its Affiliates' equity or equity-equivalent  securities or any instrument
that  permits the holder  thereof to acquire  Common  Stock at any time over the
life of the  security  or  investment  at a price that is less than the  closing
sales  price of the Common  Stock at the time of  issuance  of such  security or
investment (a "Subsequent Financing") for a period of 180 days after the Closing
Date, except (i) the granting of options or warrants to employees,  officers and
directors,  and the issuance of shares upon exercise of options  granted,  under
any stock  option  plan or  employment  agreement  or,  with  respect  to senior
management,  consulting agreements heretofore or hereinafter duly adopted by the
Company,  (ii) shares issued upon exercise of any currently outstanding warrants
and upon conversion of any currently outstanding  convertible preferred stock in
each case disclosed in Schedule 3.1(c),  and (iii) shares of Common Stock issued
upon conversion of the Shares,  unless (A) the Company delivers to JNC a written
notice  (the  "Subsequent  Financing  Notice") of its  intention  to effect such
Subsequent  Financing,  which  Subsequent  Financing  Notice  shall  describe in
reasonable detail the proposed terms of such Subsequent Financing, the amount of
proceeds intended to be raised thereunder, the Persons with whom such Subsequent
Financing  shall be  affected,  and  attached  to which shall be a term sheet or
similar  document  relating  thereto,  and (B) JNC shall not have  notified  the
Company by 5:00 p.m.  (Eastern  Standard  time) on the tenth (10th)  Trading Day
after its  receipt of the  Subsequent  Financing  Notice of its  willingness  to
provide (or to cause its sole  designee to provide),  subject to  completion  of
mutually  acceptable  documentation,  up to $2,000,000  (at JNC's option) of the
financing  described  in the  Subsequent  Financing  Notice  to the  Company  on
substantially  the terms set forth in the Subsequent  Financing  Notice.  If JNC
shall  fail to  notify  the  Company  of its (or its  designee's)  intention  to
participate  in such  Subsequent  Financing and to enter into such  negotiations
within  such time  period,  the  Company  may  effect the  Subsequent  Financing
substantially  upon the terms and to the Persons (or Affiliates of such Persons)
set forth in the Subsequent  Financing Notice without  participation  therein by
JNC;  provided,  that the Company  shall  provide  JNC with a second  Subsequent
Financing Notice,



                                      -15-

<PAGE>



and JNC shall  again  have the right of  participation  set forth  above in this
paragraph (a), if the  Subsequent  Financing  subject to the initial  Subsequent
Financing Notice shall not have been consummated for any reason on the terms set
forth in such Subsequent  Financing Notice within forty-five (45) days after the
date of the initial Subsequent Financing Notice with the Person (or an Affiliate
of such Person)  identified in the  Subsequent  Financing  Notice.  The right of
participation  granted in this  paragraph  to JNC shall  confer no rights to any
Purchaser other than JNC to participate in a future financing by the Company.

               (b)  Except  for   Underlying   Shares  and  other   "Registrable
Securities" (as such term is defined in the Registration Rights Agreement) to be
registered in accordance with the Registration  Rights Agreement and for Company
securities  permitted under Section 6(b) of the Registration Rights Agreement to
be registered in the Underlying Securities Registration  Statement,  the Company
shall  not,  for a period of not less than  forty-five  (45) days after the date
that the Underlying Securities  Registration  Statement is declared effective by
the Commission,  without the prior written consent of the Purchasers,  (i) issue
or  sell  any of its or any  of  its  Affiliates'  equity  or  equity-equivalent
securities  pursuant to Regulation S promulgated  under the  Securities  Act, or
(ii)  register  for  resale  any  securities  of the  Company.  Any days  that a
Purchaser  is not  permitted  to sell  Underlying  Shares  under the  Underlying
Securities  Registration  Statement  shall be added to such  forty-five (45) day
period for the purposes of (i) and (ii) above.

               Section  4.10.  Notice of Breaches.  Each of the Company and each
Purchaser  shall give prompt  written notice to the other of any breach by it of
any  representation,  warranty or other  agreement  contained in any Transaction
Document,  as well as any events or  occurrences  arising after the date hereof,
which  would  reasonably  be likely to cause any  representation  or warranty or
other agreement of such party, as the case may be,  contained in the Transaction
Document to be  incorrect  or  breached as of such  Closing  Date.  However,  no
disclosure  by a party  pursuant  to this  Section  shall be  deemed to cure any
breach of any  representation,  warranty  or other  agreement  contained  in any
Transaction Document.

        Notwithstanding  the  generality  of the  foregoing,  the Company  shall
promptly  notify the Purchasers of any notice or claim (written or oral) that it
receives from any lender of the Company to the effect that the  consummation  of
the  transactions  contemplated by the Transaction  Documents  violates or would
violate any  written  agreement  or  understanding  between  such lender and the
Company, and the Company shall promptly furnish by facsimile to the Purchasers a
copy of any written statement in support of or relating to such claim or notice.

               Section 4.11. Conversion and Exercise Obligations of the Company.
The Company shall honor  conversions of the Shares and shall deliver  Underlying
Shares  upon  such  conversions  in  accordance  with the  respective  terms and
conditions and time periods set forth in the Certificate of Designation.

               Section 4.12. Transfer of Intellectual Property Rights. Except in
the ordinary course of the Company's  business  consistent with past practice or
in  connection  with the sale of all or  substantially  all of the assets of the
Company, the Company shall not transfer, sell or


                                      -16-

<PAGE>



otherwise   dispose  of,  any  Intellectual   Property  Rights,   or  allow  the
Intellectual  Property  Rights to become subject to any Liens,  or fail to renew
such Intellectual Property Rights (if renewable and would otherwise expire).

               Section  4.13.  Reimbursement.  In the event that any  Purchaser,
other  than by reason of its gross  negligence  or willful  misconduct,  becomes
involved in any capacity in any action,  proceeding or investigation  brought by
or against any Person, including stockholders of the Company, in connection with
or as a result of the consummation of the transactions  contemplated pursuant to
the  Transaction  Documents,  the Company will  reimburse such Purchaser for its
reasonable legal and other expenses (including the cost of any investigation and
preparation) incurred in connection therewith. The reimbursement  obligations of
the Company under this paragraph shall be in addition to any liability which the
Company may otherwise  have,  shall extend upon the same terms and conditions to
any Affiliate of each  Purchaser and each of the  partners,  directors,  agents,
employees  and  controlling  persons  (if  any),  as the  case  may be,  of each
Purchaser  and any such  Affiliate,  and shall be binding  upon and inure to the
benefit of any successors,  assigns,  heirs and personal  representatives of the
Company,  each Purchaser and any such Affiliate and any such Person. The Company
also agrees  that no  Purchaser  or any such  Affiliates,  partners,  directors,
agents, employees or controlling persons shall have any liability to the Company
or any  Person  asserting  claims  on behalf  of or in right of the  Company  in
connection with or as a result of the consummation of the Transaction Documents,
except to the extent that any losses, claims,  damages,  liabilities or expenses
incurred by the Company result from the gross  negligence or willful  misconduct
of such Purchaser or its partners,  directors, agents, employees and controlling
persons (if any),  in  connection  with the  transactions  contemplated  by this
Agreement. No Purchaser shall, without the prior written consent of the Company,
which shall not be  unreasonably  withheld or delayed,  effect any settlement of
any action in respect of which the Company is a party.

               Section  4.14.  Liquidated  Damages  Upon  Occurrence  of Certain
Events. (a) If the Common Stock shall for any reason fail to be listed on, or be
suspended  from trading  from,  the Nasdaq  National  Market or Nasdaq  SmallCap
Market for three (3) Trading Days (which need not be consecutive  Trading Days),
then each holder of  Preferred  Stock then  outstanding  shall have the right to
require the Company to pay to it in cash an amount equal to 25% of the aggregate
Stated  Value of all shares of  Preferred  Stock then held by it, as  liquidated
damages and not as a penalty.  Any such  payment by the Company  shall be due in
full within five (5) Business Days of the date that the holder of such Preferred
Stock notifies the Company of the exercise of the right to payment  contained in
this paragraph.  Interest shall accrue and be payable on such liquidated damages
at the rate of 18% per annum until the full amount of such  liquidated  damages,
plus all  accrued and unpaid  interest  thereon,  are paid in full.  A Purchaser
shall not be  entitled  to  liquidated  damages as a result of a  suspension  or
delisting  described  above in this paragraph if it has previously  provided the
Company with a Subsequent  Reduced  Conversion  Price  Notice  pursuant  Section
5(c)(i)  of the  Certificate  of  Designation,  except  in the  event  that  the
suspension  or  delisting  that  was  the  subject  of such  Subsequent  Reduced
Conversion  Price Notice had been cured and a new suspension or delisting  arose
thereafter.  For  purposes  hereof,  shares  of  Preferred  Stock  for  which  a
conversion has been requested in accordance with the Certificate of Designation


                                      -17-

<PAGE>



shall be deemed to be outstanding  if such delisting or suspension  occurs on or
prior to the date that the holder receives Underlying Shares from the Company in
respect thereof.

               (b) If (i) the conversion rights of a Purchaser are suspended for
any  reason,  or if a  Purchaser  is  not  for  any  reason  permitted  to  sell
Registrable Securities under an Underlying Securities Registration Statement, or
(ii) the Company fails to comply with requests by a Purchaser for  conversion of
any shares of its Preferred Stock into Underlying  Shares in accordance with the
terms and time periods set forth in the  Certificate of Designation or (iii) the
Company is  required  to convene a meeting of  stockholders  pursuant to Section
5(a)(ii) of the  Certificate  of  Designation  and fails to convene such meeting
within the time  period  specified  in such  Section  or does so convene  such a
meeting  within such time period but fails to obtain  Shareholder  Approval  (as
defined in the  Certificate of Designation) at such meeting (any such failure or
breach being  referred to as an "Event"  and, for purposes of clauses (i),  (ii)
and (iii) the date on which  such  Event  occurs,  being  referred  to as "Event
Date"),  then, each such Purchaser may require the Company to pay to it in cash,
1.5% of the aggregate Stated Value of all shares of Preferred Stock then held by
it, as  liquidated  damages and not as a penalty.  In addition,  on each monthly
anniversary of the Event Date until the Event is cured,  each such Purchaser may
require the Company to pay to it in cash, 2.5% of the aggregate  Stated Value of
all shares of Preferred Stock then held by it, as liquidated  damages and not as
a penalty.  A Purchaser shall not be entitled to liquidated damages for an Event
for any month for which it has  elected  to  deliver  to the  Company an Initial
Reduced  Conversion  Price Notice pursuant Section 5(c)(i) of the Certificate of
Designation in respect of such Event.  However, a Purchaser shall be entitled to
receive both the benefits of the Initial Reduced Conversion Price Notice and the
liquidated  damages  contemplated in this paragraph for the same Event,  but not
both in the  same  monthly  period.  The  Purchasers  shall  have  the  right to
liquidated  damages for multiple and/or successive  Events. For purposes hereof,
shares  of  Preferred  Stock  for  which a  conversion  has  been  requested  in
accordance with the Certificate of Designation shall be deemed to be outstanding
and held by the  converting  holder  if an Event  occurs on or prior to the date
that the holder receives Underlying Shares from the Company in respect thereof.

               (B) If the  Company  fails for any  reason to deliver to a holder
certificates  representing  the  number of  Underlying  Shares  issuable  upon a
conversion  of  Preferred  Stock  in  accordance  with  Section  5(b)(i)  of the
Certificate of  Designation  prior to the third Trading Day after the Conversion
Date,  then  the  Company  shall  pay to the  converting  holder,  in  cash,  as
liquidated  damages  and not as a penalty,  $1,500 for each day after such third
Trading Day until such  certificates are received.  Nothing herein shall limit a
holder's  right to pursue actual  damages for the  Company's  failure to deliver
certificates  representing  such Underlying  Shares within the period  specified
herein and in the  Certificate  of  Designation,  and such 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 be  cumulative  and shall not prohibit the
holders from seeking to enforce other damages  available under this Agreement or
the Certificate of Designation.



                                      -18-

<PAGE>



                                    ARTICLE V

                                  MISCELLANEOUS

               Section 5.1. Fees and Expenses. At the Closing, the Company shall
pay (i) $25,000 to the Escrow Agent for the legal fees and  disbursements of the
Purchasers in connection with the preparation and negotiation of the Transaction
Documents  and  (ii)  $5,000  to  JNC  for  its  due   diligence   expenses  and
disbursements in connection with the  transactions  contemplated  hereby.  Other
than the amounts contemplated by the immediately preceding sentence,  and except
as set forth in the Registration Rights Agreement, each party shall pay the fees
and expenses of its advisers,  counsel,  accountants and other experts,  if any,
and all other  expenses  incurred  by such party  incident  to the  negotiation,
preparation,  execution, delivery and performance of this Agreement. The Company
shall pay all stamp and other  taxes and duties  levied in  connection  with the
issuance of the Shares pursuant hereto.  The Purchasers shall be responsible for
their own tax liability that may arise as a result of the  investment  hereunder
or the transactions contemplated by this Agreement.

               Section  5.2.   Entire   Agreement;   Amendments,   Exhibits  and
Schedules. This Agreement,  together with the Exhibits and Schedules hereto, the
Certificate of Designation,  the Registration Rights Agreement and (with respect
to JNC and the Company) the Escrow Agreement contain the entire understanding of
the parties with respect to the subject  matter  hereof and  supersede all prior
agreements and  understandings,  oral or written,  with respect to such matters,
including,  without  limitation,  any and all agreements and understandings with
respect to the Unit  Offering.  The Exhibits and Schedules to this Agreement are
hereby  incorporated  herein and made a part hereof for all purposes as if fully
set forth herein.

               Section  5.3.  Notices.  Any  notice  or other  communication  or
delivery required or permitted to be provided  hereunder shall be in writing and
shall  be  deemed  to have  been  received  on the  earliest  of (i) the date of
transmission,  if such notice or communication is delivered to the address or to
the  facsimile  telephone  number (as the case may be) specified in this Section
prior to 8:00 p.m.  (Eastern Standard time) on a Business Day, (ii) the Business
Day  after  the  date of  transmission  or hand  delivery,  if  such  notice  or
communication  is  delivered  to the address or the at the  facsimile  telephone
number  (as the case may be)  specified  in this  Section  later  than 8:00 p.m.
(Eastern  Standard  time) on any date  and  earlier  than  11:59  p.m.  (Eastern
Standard  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 address for such notices and communications to any Purchaser shall be as set
forth below such Purchaser's  name on Schedule 1 and, if to the Company,  to the
following address:

                          Palatin Technologies, Inc.
                          214 Carnegie Center
                          Princeton, NJ 08540
                          Facsimile No.: (609) 452-0880
                          Attn: Edward J. Quilty

                                      -19-

<PAGE>



 

        With copies to:   Rubin Baum Levin Constant & Friedman
                          30 Rockefeller Plaza
                          New York, NY 10112
                          Facsimile No.: (212) 698-7700
                          Attn: Faith L. Charles, Esq.

or such other  address as may be designated  in writing  hereafter,  in the same
manner, by such Person.

               Section 5.4. Amendments;  Waivers. No provision of this Agreement
may be waived or amended except in a written  instrument  signed, in the case of
an amendment, by the Company and each Purchaser, or, in the case of a waiver, by
the party against whom  enforcement  of any such waiver is sought.  No waiver of
any default with respect to any  provision,  condition  or  requirement  of this
Agreement shall be deemed to be a continuing waiver in the future or a waiver of
any other  provision,  condition or requirement  hereof,  nor shall any delay or
omission of either  party to exercise any right  hereunder in any manner  impair
the exercise of any such right accruing to it thereafter.

               Section 5.5.  Headings.  The headings  herein are for convenience
only,  do not  constitute  a part of this  Agreement  and shall not be deemed to
limit or affect any of the provisions hereof.

               Section 5.6.  Successors  and Assigns.  This  Agreement  shall be
binding  upon and inure to the benefit of the parties and their  successors  and
permitted assigns,  including any Persons to whom a Purchaser  transfers Shares.
The  assignment by a party of this Agreement or any rights  hereunder  shall not
affect the obligations of such party under this Agreement.

               Section 5.7. No Third-Party  Beneficiaries;  Obligations Several.
This  Agreement  is intended  for the  benefit of the  parties  hereto and their
respective  successors  and  permitted  assigns and,  other than with respect to
permitted  assignees  under  Section 5.6, is not for the benefit of, nor may any
provision  hereof be  enforced  by, any other  Person.  The  obligations  of the
Purchasers  under the  Transaction  Documents  are  several and not joint and no
Purchaser  shall be responsible  for any obligations of or misdeeds by any other
Purchaser.

               Section 5.8.  Governing Law. This Agreement  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.  Each
party hereby  irrevocably  submits to the non-exclusive  jurisdiction of any New
York state  court  sitting in the  Borough of  Manhattan,  the state and federal
courts  sitting  in the City of New York or any  federal  court  sitting  in the
Borough  of  Manhattan  in the City of New  York  (collectively,  the "New  York
Courts")  in  respect  of any  Proceeding  arising  out of or  relating  to this
Agreement,  and  irrevocably  accepts for itself and in respect of its property,
generally and unconditionally, jurisdiction of the New York Courts. Each


                                      -20-

<PAGE>



party  irrevocably  waives to the fullest extent it may  effectively do so under
applicable  law any objection that it may now or hereafter have to the laying of
the venue of any such  proceeding  brought  in any New York  Court and any claim
that any such  proceeding  brought in any New York Court has been  brought in an
inconvenient  forum.  Nothing herein shall affect the right of any Holder.  Each
party  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 such party at the address in effect for notices to it under this
Agreement  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.

               Section   5.9.   Survival.   The   representations,   warranties,
agreements and covenants  contained in this Agreement  shall survive the Closing
and the issuance and  conversion  of the Shares for a period of three years from
the Closing Date,  except for claims  arising from fraud which shall survive for
the applicable statute of limitations.

               Section 5.10. Execution. This Agreement may be executed in two or
more counterparts,  all of which when taken together shall be considered one and
the same  agreement,  and shall become  effective  when  counterparts  have been
signed by each party and  delivered to the other  parties,  it being  understood
that all  parties  need not sign the same  counterpart.  In the  event  that any
signature is delivered by facsimile transmission,  such signature shall create a
valid and binding  obligation  of the party  executing  (or on whose behalf such
signature  is  executed)  the same  with the same  force  and  effect as if such
facsimile signature page were an original thereof.

               Section 5.11.  Publicity.  The Company and JNC shall consult with
each other in issuing any press releases or otherwise  making public  statements
with  respect to the  transactions  contemplated  hereby and neither JNC nor the
Company  shall issue any such press  release or  otherwise  make any such public
statement  without the prior written  consent of the other,  which consent shall
not be unreasonably  withheld or delayed,  except that no prior consent shall be
required  if such  disclosure  is  required  by law,  in  which  such  case  the
disclosing  party shall provide the other party with prior notice of such public
statement.  Notwithstanding  the  foregoing,  the  Company  shall  not  publicly
disclose the name of JNC without its prior written consent, except to the extent
that JNC's name (but not the name of any  beneficial  owner thereof) is required
to be disclosed by the Nasdaq Stock Market (or any successor association) or the
Commission. The Purchasers other than JNC shall not make any public statement or
issue any press release regarding the transactions  contemplated  hereby without
the prior written consent of JNC and the Company. Within 10 Business Days of the
Closing  Date,  the  Company  shall  issue a press  release  or  file  with  the
Commission a Form 8-K or Form 10-QSB publicly  announcing the sale of the Shares
to the Purchasers.

               Section  5.12.  Severability.  In  case  any  one or  more of the
provisions of this Agreement shall be invalid or  unenforceable  in any respect,
the validity and  enforceability  of the remaining  terms and provisions of this
Agreement  shall not in any way be affected or impaired  thereby and the parties
will attempt to agree upon a valid and enforceable provision which shall


                                      -21-

<PAGE>



be a reasonable  substitute  therefor,  and upon so agreeing,  shall incorporate
such substitute provision in this Agreement.

               Section  5.13.  Remedies.  Each of the parties to this  Agreement
acknowledges  and agrees that the other parties would be damaged  irreparably in
the  event  any of the  provisions  of  this  Agreement  are  not  performed  in
accordance  with their  specific  terms or otherwise are breached.  Accordingly,
each of the parties hereto agrees that the other parties shall be entitled to an
injunction  or  injunctions  to  prevent  breaches  of the  provisions  of  this
Agreement  and  to  enforce  specifically  this  Agreement  and  the  terms  and
provisions of this Agreement in any action instituted in any court of the United
States of America or any state thereof having  jurisdiction  over the parties to
this Agreement and the matter, in addition to any other remedy to which they may
be entitled, at law or in equity.


                                      -22-

<PAGE>



               IN  WITNESS   WHEREOF,   the  parties  hereto  have  caused  this
Convertible  Preferred  Stock  Purchase  Agreement to be duly executed as of the
date first indicated above.


                                  The Company:
                                  -----------

                                  PALATIN TECHNOLOGIES, INC.



                                  By:_____________________________
                                      Name: Edward J. Quilty
                                     Title: Chairman and Chief Executive Officer


                                  The Purchasers:
                                  --------------

                                  JNC OPPORTUNITY FUND LTD.


                                  By:_____________________________
                                      Name:
                                     Title:


                                  ROBERT LEAF


                                  ________________________________
                                  Robert Leaf


                                  JOSEPH AND BARBARA STRASSMAN


                                  ________________________________
                                  Joseph Strassman  Barbara Strassman


                                  CARL F. SCHWARTZ


                                  ________________________________
                                  Carl F. Schwartz


                                      -23-






                          REGISTRATION RIGHTS AGREEMENT

               This Registration Rights Agreement (this "Agreement") is made and
entered into as of April 28, 1998, among Palatin Technologies,  Inc., a Delaware
corporation  (the  "Company"),  and the parties who have  executed the signature
pages attached hereto and whose names appear on Schedule 1 (each such signatory,
a "Purchaser" and all such signatories, collectively, the "Purchasers").

               This  Agreement  is made  pursuant to the  Convertible  Preferred
Stock Purchase Agreement,  dated as of the date hereof among the Company and the
Purchasers (the "Purchase Agreement").

               The Company and the Purchasers hereby agree as follows:

        1.     Definitions

               Capitalized  terms used and not otherwise defined herein that are
defined in the Purchase  Agreement  shall have the meanings  given such terms in
the Purchase  Agreement.  As used in this  Agreement,  the following terms shall
have the following meanings:

               "Advice" shall have meaning set forth in Section 3(o).

               "Affiliate"  means, with respect to any Person,  any other Person
that directly or indirectly controls or is controlled by or under common control
with such Person. For the purposes of this definition, "control," when used with
respect to any Person, means the possession, direct or indirect, of the power to
direct or cause the  direction  of the  management  and policies of such Person,
whether  through the ownership of voting  securities,  by contract or otherwise;
and the terms of  "affiliated,"  "controlling"  and  "controlled"  have meanings
correlative to the foregoing.

               "Business Day" means any day except Saturday,  Sunday and any day
which shall be a legal  holiday or a day on which  banking  institutions  in the
state  of New  York  generally  are  authorized  or  required  by  law or  other
government actions to close.

               "Certificate of Designation"  shall have the meaning set forth in
the Purchase Agreement.

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

               "Commission" means the Securities and Exchange Commission.

               "Common Stock" means the Company's  common stock,  par value $.01
per share.


                                       -1-

<PAGE>



               "Effectiveness  Date" means the 120th day  following  the Closing
Date.

               "Effectiveness  Period"  shall  have  the  meaning  set  forth in
Section 2(a).

               "Event" shall have the meaning set forth in Section 6(e).

               "Event Date" shall have the meaning set forth in Section 6(e).

               "Exchange  Act" means the  Securities  Exchange  Act of 1934,  as
amended.

               "Filing Date" means the 45th day following the Closing Date.

               "Initial Reduced  Conversion Price Notice" shall have the meaning
set forth in the Certificate of Designation.

               "Holder" or  "Holders"  means the holder or holders,  as the case
may be, from time to time, of Registrable Securities.

               "Indemnified  Party"  shall have the meaning set forth in Section
5(c).

               "Indemnifying  Party" shall have the meaning set forth in Section
5(c).

               "Losses" shall have the meaning set forth in Section 5(a).

               "New York  Courts"  shall have the  meaning  set forth in Section
7(j).

               "Original  Issue  Date"  shall have the  meaning set forth in the
Certificate of Designation.

               "Person"  means  an  individual  or a  corporation,  partnership,
trust,  incorporated  or  unincorporated  association,  joint  venture,  limited
liability  company,  joint stock company,  government (or an agency or political
subdivision thereof) or other entity of any kind.

               "Preferred Stock" means Company's Series B Convertible  Preferred
Stock,  $.01 par  value,  issued  to the  Purchasers  pursuant  to the  Purchase
Agreement.

               "Proceeding"  means an  action,  claim,  suit,  investigation  or
proceeding   (including,   without  limitation,   an  investigation  or  partial
proceeding, such as a deposition), whether commenced or threatened.


                                       -2-

<PAGE>



               "Prospectus"  means the prospectus  included in the  Registration
Statement  (including,  without  limitation,  a  prospectus  that  includes  any
information  previously  omitted from a prospectus filed as part of an effective
registration  statement  in  reliance  upon  Rule  430A  promulgated  under  the
Securities Act), as amended or supplemented by any prospectus  supplement,  with
respect  to  the  terms  of  the  offering  of any  portion  of the  Registrable
Securities covered by the Registration  Statement,  and all other amendments and
supplements to the  Prospectus,  including  post-effective  amendments,  and all
material  incorporated by reference or deemed to be incorporated by reference in
such Prospectus.

               "Registrable   Securities"  means  the  shares  of  Common  Stock
issuable upon conversion in full of the Preferred Stock; provided,  however that
in order to account for the fact that the number of shares of Common  Stock that
are issuable upon such conversion may fluctuate  between the date hereof and the
Effective  Date due to changes in the market  price of the Common  Stock  during
such time,  Registrable Securities shall be deemed to include not less than 175%
of the  number of  shares of Common  Stock  into  which the  Preferred  Stock is
convertible,  assuming such  conversion  occurred on the Closing  Date,  and the
initial  Registration  Statement shall cover at least such number of shares. The
Company  shall be required to file  additional  Registration  Statements  to the
extent  the  actual  number  of  shares of Common  Stock  into  which  shares of
Preferred  Stock are  convertible  exceeds the number of shares of Common  Stock
initially registered in accordance with the immediately prior sentence,  and the
filing of such additional  Registration  Statements shall occur no later than 10
Business  Days after notice of the  requirement  thereof,  which the Holders may
give at such time when the number of shares of Common Stock as are issuable upon
conversion of Preferred Stock exceeds 85% of the number of shares registered.

               "Registration   Statement"  means  the   registration   statement
contemplated by Section 2(a) (covering such number of Registrable Securities and
any  additional  Registration  Statements  contemplated  in  the  definition  of
Registrable Securities), including (in each case) the Prospectus, amendments and
supplements to such  registration  statement or  Prospectus,  including pre- and
post-effective  amendments,  all exhibits thereto, and all material incorporated
by reference  or deemed to be  incorporated  by  reference in such  registration
statement.

               "Rule 158" means Rule 158 promulgated by the Commission  pursuant
to the  Securities  Act, as such Rule may be amended  from time to time,  or any
similar  rule  or  regulation   hereafter   adopted  by  the  Commission  having
substantially the same effect as such Rule.

               "Rule 415" means Rule 415 promulgated by the Commission  pursuant
to the  Securities  Act, as such Rule may be amended  from time to time,  or any
similar  rule  or  regulation   hereafter   adopted  by  the  Commission  having
substantially the same effect as such Rule.

               "Securities Act" means the Securities Act of 1933, as amended.

               "Special  Counsel"  means one law firm  acting as  counsel to the
Holders,  for which the Holders will be  reimbursed  by the Company  pursuant to
Section 4.


                                       -3-

<PAGE>



               "Stated Value" shall mean $100.

               "Trading Day" means (a) a day on which the Common Stock is traded
on the Nasdaq  National Market or Nasdaq SmallCap Market or other stock exchange
or market on which the Common Stock has been listed,  or (b) if the Common Stock
is not listed on the Nasdaq SmallCap  Market or any stock exchange or 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, however, 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 any day except  Saturday,  Sunday and any day which  shall be a legal
holiday  or a day on which  banking  institutions  in the  State of New York are
authorized or required by law or other government action to close.

               "Underwritten  Registration  or  Underwritten  Offering"  means a
registration in connection  with which  securities of the Company are sold to an
underwriter for reoffering to the public  pursuant to an effective  registration
statement.


        2.     Shelf Registration

               (a) On or prior to the Filing Date, the Company shall prepare and
file  with  the  Commission  a  "Shelf"  Registration   Statement  covering  all
Registrable Securities for an offering to be made on a continuous basis pursuant
to Rule 415 in accordance,  among other things, with the methods of distribution
thereof as specified by the Holders. The Registration Statement shall be on Form
S-3  (or,  if the  Company  is not  permitted  to  register  the  resale  of the
Registrable  Securities on Form S-3, the Registration Statement shall be on such
other appropriate form in accordance  herewith as the Holders may consent).  The
Registration  Statement shall state,  to the extent  permitted by Rule 416 under
the Securities Act, that it also covers such  indeterminate  number of shares of
Common Stock as may be required to effect  conversion of the Preferred  Stock to
prevent dilution resulting from stock splits, stock dividends or similar events,


                                       -4-

<PAGE>



or by reason of changes in the Conversion  Price in accordance with the terms of
the  Certificate  of  Designation  (as defined in the Purchase  Agreement).  The
Company  shall use its best  efforts to cause the  Registration  Statement to be
declared  effective  under the  Securities Act as promptly as possible after the
filing thereof,  but in any event prior to the Effectiveness Date, and shall use
its best  efforts to keep such  Registration  Statement  continuously  effective
under the  Securities  Act until the date which is two years after the date that
such  Registration  Statement is declared  effective by the  Commission  or such
earlier  date  when all  Registrable  Securities  covered  by such  Registration
Statement have been sold or may be sold without volume restrictions  pursuant to
Rule 144(k)  promulgated  under the Securities Act, as determined by the counsel
to the Company  pursuant to a written  opinion letter to such effect,  addressed
and  acceptable to the Company's  transfer agent (the  "Effectiveness  Period");
provided,  however,  that the Company  shall not be deemed to have used its best
efforts to keep the Registration  Statement  effective during the  Effectiveness
Period if it  voluntarily  takes any action that would result in the Holders not
being  able to sell the  Registrable  Securities  covered  by such  Registration
Statement during the Effectiveness  Period, unless such action is required under
applicable  law or the  Company  has  filed a  post-effective  amendment  to the
Registration Statement and the Commission has not declared it effective.

               (b) If the Holders of a majority of the Registrable Securities so
elect,  an  offering of  Registrable  Securities  pursuant  to the  Registration
Statement  may be  effected  in the form of an  Underwritten  Offering.  In such
event, and if the managing  underwriters  advise the Company and such Holders in
writing that in their opinion the amount of Registrable  Securities  proposed to
be sold  in  such  Underwritten  Offering  exceeds  the  amount  of  Registrable
Securities  which  can be sold in such  Underwritten  Offering,  there  shall be
included in such Underwritten Offering the amount of such Registrable Securities
which in the opinion of such managing  underwriters can be sold, and such amount
shall be  allocated  pro rata among the Holders  proposing  to sell  Registrable
Securities in such Underwritten Offering.

               (c) If any of the  Registrable  Securities  are to be  sold in an
Underwritten  Offering,  the investment  banker in interest that will administer
the  offering  will be selected by the Holders of a majority of the  Registrable
Securities  included in such offering  upon  consultation  with the Company.  No
Holder may participate in any Underwritten Offering hereunder unless such Person
(i)  agrees to sell its  Registrable  Securities  on the basis  provided  in any
underwriting  agreements  approved by the Persons entitled  hereunder to approve
such arrangements, and (ii) completes and executes all questionnaires, powers of
attorney,  indemnities,  underwriting  agreements and other  documents  required
under the terms of such arrangements.

        3.     Registration Procedures

               In  connection  with  the  Company's   registration   obligations
hereunder, the Company shall:

               (a)  Prepare  and  file  with the  Commission  on or prior to the
Filing  Date,  a  Registration   Statement  (and  any  additional   Registration
Statements  as may be required) in accordance  with Section 2(a),  and cause the
Registration  Statement  to become  effective  and remain  effective as provided
herein;  provided,  however,  that not less than five (5) Business Days prior to


                                       -5-

<PAGE>



the  filing of the  Registration  Statement  or any  related  Prospectus  or any
amendment  or  supplement   thereto   (including  any  document  that  would  be
incorporated  or deemed to be incorporated  therein by reference,  and including
the  initial  filing of such  Registration  Statement),  the  Company  shall (i)
furnish to the Holders,  their  Special  Counsel and any managing  underwriters,
copies of all such  documents  proposed  to be filed in the form  proposed to be
filed,   which  documents  (other  than  those  incorporated  or  deemed  to  be
incorporated by reference) will be subject to the review of such Holders,  their
Special Counsel and such managing underwriters,  and (ii) cause its officers and
directors,  counsel and independent  certified public  accountants to respond to
such  inquiries as shall be necessary,  in the opinion of respective  counsel to
such Holders and such underwriters, to conduct a reasonable investigation within
the meaning of the Securities  Act. The Company shall not file the  Registration
Statement or any such  Prospectus or any  amendments or  supplements  thereto to
which the Holders of a majority of the  Registrable  Securities,  their  Special
Counsel,  or any  managing  underwriters,  shall  reasonably  object on a timely
basis.

               (b) (i) Prepare  and file with the  Commission  such  amendments,
including  post-effective  amendments,  to the Registration  Statement as may be
necessary to keep the Registration  Statement  continuously  effective as to the
applicable  Registrable  Securities for the Effectiveness Period and prepare and
file with the Commission  such  additional  Registration  Statements in order to
register for resale under the Securities Act all of the Registrable  Securities;
(ii) cause the related  Prospectus to be amended or supplemented by any required
Prospectus supplement, and as so supplemented or amended to be filed pursuant to
Rule  424 (or any  similar  provisions  then in  force)  promulgated  under  the
Securities  Act;  (iii)  respond as  promptly  as  practicable  to any  comments
received from the Commission with respect to the  Registration  Statement or any
amendment  thereto and promptly  provide the Holders true and complete copies of
all  correspondence  from and to the  Commission  relating  to the  Registration
Statement;  and (iv) comply with the  provisions of the  Securities  Act and the
Exchange  Act with  respect to the  disposition  of all  Registrable  Securities
covered by the Registration Statement during the applicable period in accordance
with the intended methods of disposition by the Holders thereof set forth in the
Registration Statement as so amended or in such Prospectus as so supplemented.

               (c) Notify  the  Holders of  Registrable  Securities  to be sold,
their Special  Counsel and any managing  underwriters  immediately  (and, in the
case of (i)(A) below,  not less than five (5) days prior to such filing) and (if
requested  by any such  Person) and confirm such notice in writing no later than
one  (1)  Business  Day  following  the  day  (i)(A)  when a  Prospectus  or any
Prospectus supplement or post-effective  amendment to the Registration Statement


                                       -6-

<PAGE>



is proposed to be filed;  (B) when the Commission  notifies the Company  whether
there  will be a  "review"  of such  Registration  Statement  and  whenever  the
Commission comments in writing on such Registration Statement (the Company shall
provide true and complete  copies thereof and all written  responses  thereto to
each  of  the  Holders);   and  (C)  when  the  Registration  Statement  or  any
post-effective  amendment  has  become  effective;  (ii) of any  request  by the
Commission or any other Federal or state  governmental  authority for amendments
or  supplements  to the  Registration  Statement or Prospectus or for additional
information;  (iii)  of  the  issuance  by the  Commission  of  any  stop  order
suspending the effectiveness of the Registration  Statement  covering any or all
of the  Registrable  Securities or the  initiation of any  Proceedings  for that
purpose;  (iv) if at any time any of the  representations and war ranties of the
Company  contained  in any  agreement  (including  any  underwriting  agreement)
contemplated hereby ceases to be true and correct in all material respects;  (v)
of the receipt by the Company of any notification with respect to the suspension
of the  qualification or exemption from  qualification of any of the Registrable
Securities for sale in any jurisdiction, or the initiation or threatening of any
Proceeding for such purpose;  and (vi) of the occurrence of any event that makes
any statement made in the  Registration  Statement or Prospectus or any document
incorporated  or deemed to be  incorporated  therein by reference  untrue in any
material respect or that requires any revisions to the  Registration  Statement,
Prospectus or other documents so that, in the case of the Registration Statement
or the Prospectus,  as the case may be, it will not contain any untrue statement
of a material  fact or omit to state any  material  fact  required  to be stated
therein  or  necessary  to  make  the  statements   therein,  in  light  of  the
circumstances under which they were made, not misleading.

               (d) Use its best efforts to avoid the issuance of, or, if issued,
obtain the  withdrawal  of (i) any order  suspending  the  effectiveness  of the
Registration  Statement,  or  (ii)  any  suspension  of  the  qualification  (or
exemption from  qualification) of any of the Registrable  Securities for sale in
any jurisdiction, at the earliest practicable moment.

               (e) If requested by any managing  underwriter or the Holders of a
majority in interest of the Registrable Securities to be sold in connection with
an Underwritten Offering, (i) promptly incorporate in a Prospectus supplement or
post-effective  amendment to the Registration Statement such information as such
managing  underwriters  and such  Holders  reasonably  agree  should be included
therein,  and (ii) make all required  filings of such  Prospectus  supplement or
such  post-effective  amendment  as soon as  practicable  after the  Company has
received  notification  of the  matters to be  incorporated  in such  Prospectus
supplement or  post-effective  amendment;  provided,  however,  that the Company
shall not be required  to take any action  pursuant  to this  Section  3(e) that
would, in the opinion of counsel for the Company,  violate  applicable law or be
materially detrimental to the business prospects of the Company.

               (f)  Furnish  to  each  Holder,  their  Special  Counsel  and any
managing  underwriters,  without  charge,  at least one  conformed  copy of each
Registration   Statement  and  each  amendment  thereto,   including   financial
statements  and  schedules,   all  documents   incorporated   or  deemed  to  be
incorporated  therein by  reference,  and all exhibits to the extent  reasonably
requested by such Person  (including those previously  furnished or incorporated
by reference) promptly after the filing of such documents with the Commission.

               (g) Promptly deliver to each Holder,  their Special Counsel,  and
any  underwriters,   without  charge,  as  many  copies  of  the  Prospectus  or
Prospectuses   (including  each  form  of  prospectus)  and  each  amendment  or
supplement  thereto as such  Persons  may  reasonably  request;  and the Company


                                       -7-

<PAGE>



hereby  consents to the use of such  Prospectus and each amendment or supplement
thereto by each of the selling  Holders and any  underwriters in connection with
the offering and sale of the Registrable  Securities  covered by such Prospectus
and any amendment or supplement thereto.

               (h) Qualify or register (or procure any necessary exemptions from
such  qualification  or registration)  the Registrable  Securities for offer and
sale under the securities or Blue Sky laws of such  jurisdictions  as any Holder
or  underwriter  requests  in  writing,  and  keep  each  such  registration  or
qualification (or exemption therefrom) effective during the Effectiveness Period
and do any and all other acts or things  necessary  or  advisable  to enable the
disposition in such  jurisdictions  of the Registrable  Securities  covered by a
Registration  Statement;  provided,  however,  that  the  Company  shall  not be
required to qualify generally to do business in any jurisdiction where it is not
then so qualified or to take any action that would subject it to general service
of process in any such  jurisdiction  where it is not then so subject or subject
the Company to any material tax in any such jurisdiction where it is not then so
subject.

               (i) Cooperate with the Holders and any managing  underwriters  to
facilitate  the timely  preparation  and delivery of  certificates  representing
Registrable  Securities to be sold pursuant to a Registration  Statement,  which
certificates  shall  be free of all  restrictive  legends,  and to  enable  such
Registrable  Securities to be in such denominations and registered in such names
as any such  managing  underwriters  or Holders  may  request at least three (3)
Business Days prior to any sale of Registrable Securities.

               (j) Upon the  occurrence  of any event  contemplated  by  Section
3(c)(vi),  as  promptly  as  practicable,  prepare a  supplement  or  amendment,
including  a  post-effective  amendment,  to  the  Registration  Statement  or a
supplement to the related  Prospectus or any document  incorporated or deemed to
be incorporated  therein by reference,  and file any other required  document so
that,  as  thereafter  delivered,  neither the  Registration  Statement nor such
Prospectus will contain an untrue  statement of a material fact or omit to state
a  material  fact  required  to be  stated  therein  or  necessary  to make  the
statements  therein,  in light of the circumstances  under which they were made,
not misleading.

               (k) Use its best  efforts  to cause  all  Registrable  Securities
relating  to such  Registration  Statement  to be listed on the Nasdaq  SmallCap
Market  and  any  other  securities  exchange,   quotation  system,   market  or
over-the-counter  bulletin board, if any, on which similar  securities issued by
the  Company  are then  listed as and when  required  pursuant  to the  Purchase
Agreement.

               (l) In the case of an  Underwritten  Offering,  enter  into  such
agreements (including an underwriting  agreement in form, scope and substance as
is  customary  in  Underwritten  Offerings)  and take all such other  actions in
connection  therewith  (including  those  reasonably  requested  by any managing
underwriters  and the Holders of a majority of the Registrable  Securities being
sold) in order to expedite or facilitate  the  disposition  of such  Registrable
Securities,  and whether or not an  underwriting  agreement is entered into, (i)
make such  representations  and warranties to such Holders and such underwriters
as are  customarily  made by  issuers to  underwriters  in  underwritten  public
offerings,  and confirm the same if and when requested;  (ii) obtain and deliver


                                       -8-

<PAGE>



copies thereof to each Holder and the managing underwriters, if any, of opinions
of counsel to the Company and updates  thereof  addressed to each selling Holder
and each such underwriter,  in form, scope and substance reasonably satisfactory
to any such managing  underwriters  and Special  Counsel to the selling  Holders
covering the matters  customarily  covered in opinions requested in Underwritten
Offerings and such other matters as may be reasonably  requested by such Special
Counsel and  underwriters;  (iii)  immediately prior to the effectiveness of the
Registration  Statement or at the time of delivery of any Registrable Securities
sold pursuant  thereto (at the option of the  underwriters),  obtain and deliver
copies to the Holders and the managing  underwriters,  if any, of "cold comfort"
letters and updates thereof from the independent certified public accountants of
the  Company  (and,  if  necessary,   any  other  independent  certified  public
accountants of any subsidiary of the Company or of any business  acquired by the
Company for which financial  statements and financial data is, or is required to
be,  included in the  Registration  Statement),  addressed to each Person and in
such  form and  substance  as are  customary  in  connection  with  Underwritten
Offerings;  (iv) if an  underwriting  agreement is entered into,  the same shall
contain  indemnification  provisions  and  procedures  no less  favorable to the
selling Holders and the underwriters,  if any, than those set forth in Section 7
(or  such  other   provisions   and   procedures   acceptable  to  the  managing
underwriters,  if any,  and  holders of a  majority  of  Registrable  Securities
participating in such Underwritten  Offering; and (v) deliver such documents and
certificates as may be reasonably  requested by the Holders of a majority of the
Registrable  Securities  being sold,  their  Special  Counsel  and any  managing
underwriters  to evidence  the  continued  validity of the  representations  and
warranties made pursuant to clause 3(l)(i) above and to evidence compliance with
any  customary  conditions  contained  in the  underwriting  agreement  or other
agreement entered into by the Company.

               (m) Make  available  for  inspection  by the selling  Holders,  a
representative of such Holders, an underwriter  participating in any disposition
of  Registrable  Securities,  and an  attorney  or  accountant  retained by such
selling  Holders or  underwriters,  at the offices where normally  kept,  during
reasonable business hours, all financial and other records,  pertinent corporate
documents  and  properties  of the Company and its  subsidiaries,  and cause the
officers, directors, agents and employees of the Company and its subsidiaries to
supply  all   information   in  each  case   requested   by  any  such   Holder,
representative,  underwriter,  attorney or  accountant  in  connection  with the
Registration  Statement;   provided,  however,  that  any  information  that  is
determined  in good faith by the  Company  in  writing  to be of a  confidential
nature at the time of delivery of such information shall be kept confidential by
such Persons,  unless (i) disclosure of such information is required by court or
administrative  order or is  necessary  to respond to  inquiries  of  regulatory
authorities;  (ii) disclosure of such information,  in the opinion of counsel to
such  Person,  is  required by law;  (iii) such  information  becomes  generally
available  to the public  other than as a result of a  disclosure  or failure to
safeguard by such Person;  or (iv) such  information  becomes  available to such
Person from a source other than the Company and such source is not known by such
Person to be bound by a confidentiality agreement with the Company.

               (n)  Comply  with all  applicable  rules and  regulations  of the
Commission  and  make  generally  available  to  its  security  holders  earning
statements  satisfying the provisions of Section 11(a) of the Securities Act and


                                       -9-

<PAGE>



Rule 158 not later than 45 days after the end of any 12-month period (or 90 days
after  the end of any  12-month  period  if such  period  is a fiscal  year) (i)
commencing at the end of any fiscal quarter in which Registrable  Securities are
sold to underwriters in a firm commitment or best efforts Underwritten  Offering
and (ii) if not sold to  underwriters  in such an  offering,  commencing  on the
first day of the first fiscal quarter of the Company after the effective date of
the Registration Statement, which statement shall cover said 12-month period, or
end shorter periods as is consistent with the requirements of Rule 158.

               (o) The Company may require each selling Holder to furnish to the
Company  such  information   regarding  the  distribution  of  such  Registrable
Securities  and the  beneficial  ownership  of Common Stock held by such selling
Holder as is required by law to be disclosed in the  Registration  Statement and
the Company may exclude from such registration the Registrable Securities of any
such  Holder  who  unreasonably  fails  to  furnish  such  information  within a
reasonable time after receiving such request.

               If the  Registration  Statement  refers to any  Holder by name or
otherwise as the holder of any securities of the Company, then such Holder shall
have the right to require (if such reference to such Holder by name or otherwise
is not required by the  Securities  Act or any similar  Federal  statute then in
force)  the  deletion  of the  reference  to such  Holder  in any  amendment  or
supplement to the  Registration  Statement  filed or prepared  subsequent to the
time that such reference ceases to be required.

               Each  Holder  agrees  by  its   acquisition  of  the  Registrable
Securities that (i) it will not offer or sell any Registrable  Securities  under
the  Registration  Statement  until it has received  copies of the Prospectus as
then amended or supplemented as contemplated in Section 3(g) and notice from the
Company  that such  Registration  Statement  and any  post-effective  amendments
thereto have become  effective as contemplated by Section 3(c), and (ii) it will
comply  with the  prospectus  delivery  requirements  of the  Securities  Act as
applicable to it in connection with sales of Registrable  Securities pursuant to
the Registration Statement.

               Each  Holder  agrees  by  its  acquisition  of  such  Registrable
Securities  that, upon receipt of a notice from the Company of the occurrence of
any  event of the kind  described  in  Section  3(c)(ii),  3(c)(iii),  3(c)(iv),
3(c)(v) or 3(c)(vi),  such Holder will forthwith discontinue disposition of such
Registrable  Securities  until  such  Holder's  receipt  of  the  copies  of the
supplemented  Prospectus and/or amended Registration  Statement  contemplated by
Section  3(j),  or until it is advised in writing (the  "Advice") by the Company
that the use of the applicable  Prospectus may be resumed,  and, in either case,
has  received  copies  of  any  additional  or  supplemental  filings  that  are
incorporated  or deemed to be  incorporated  by reference in such  Prospectus or
Registration Statement.

               4.     Registration Expenses

               (a) All fees  and  expenses  incident  to the  performance  of or
compliance with this Agreement by the Company shall, except as and to the extent
specified in Section 4(b), be borne by the Company whether or not pursuant to an
Underwritten Offering and whether or not the Registration  Statement is filed or
becomes  effective  and  whether  or not any  Registrable  Securities  are  sold



                                      -10-

<PAGE>



pursuant to the Registration Statement. The fees and expenses referred to in the
foregoing sentence shall include,  without limitation,  (i) all registration and
filing fees (including,  without limitation,  fees and expenses (A) with respect
to  filings  required  to be made with  Nasdaq  SmallCap  Market  and each other
securities  exchange  or market on which  Registrable  Securities  are  required
hereunder to be listed,  and (B) in compliance with state securities or Blue Sky
laws (including,  without limitation,  fees and disbursements of counsel for the
underwriters  or  Holders  in  connection  with Blue Sky  qualifications  of the
Registrable  Securities and  determination of the eligibility of the Registrable
Securities for investment  under the laws of such  jurisdictions as the managing
underwriters, if any, or the Holders of a majority of Registrable Securities may
designate)), (ii) printing expenses (including, without limitation,  expenses of
printing certificates for Registrable Securities and of printing prospectuses if
the printing of prospectuses is requested by the managing underwriters,  if any,
or by the holders of a majority of the  Registrable  Securities  included in the
Registration Statement), (iii) messenger,  telephone and delivery expenses, (iv)
fees and  disbursements  of counsel for the Company and Special  Counsel for the
Holders,  in the case of the Special Counsel, to a maximum amount of $5,000, (v)
Securities Act liability  insurance,  if the Company so desires such  insurance,
and (vi) fees and  expenses  of all other  Persons  retained  by the  Company in
connection  with  the  consummation  of the  transactions  contemplated  by this
Agreement. In addition, the Company shall be responsible for all of its internal
expenses  incurred  in  connection  with the  consummation  of the  transactions
contemplated by this Agreement (including, without limi tation, all salaries and
expenses of its officers and employees  performing legal or accounting  duties),
the expense of any annual  audit,  the fees and expenses  incurred in connection
with the listing of the  Registrable  Securities on any  securities  exchange as
required hereunder.

               (b) If the Holders require an Underwritten  Offering  pursuant to
the terms  hereof,  the Company  shall be  responsible  for all costs,  fees and
expenses in connection  therewith,  except for the fees and disbursements of the
Underwriters  (including any  underwriting  commissions and discounts) and their
legal counsel and accountants.  By way of illustration  which is not intended to
diminish  from  the  provisions  of  Section  4(a),  the  Holders  shall  not be
responsible  for,  and  the  Company  shall  be  required  to pay  the  fees  or
disbursements  incurred  by the  Company  (including  by its legal  counsel  and
accountants)  in connection  with, the  preparation and filing of a Registration
Statement and related  Prospectus  for such  offering,  the  maintenance of such


                                      -11-

<PAGE>



Registration  Statement in accordance with the terms hereof,  the listing of the
Registrable  Securities in accordance with the requirements hereof, and printing
expenses  incurred  to  comply  with the  requirements  hereof.  Notwithstanding
anything  herein to the  contrary,  if (i) prior to the  Effectiveness  Date the
Holders  require the  Company to register  their  Registrable  Securities  in an
Underwritten  Offering (other than an Underwritten Offering that the Company has
otherwise  undertaken) or (ii) after the  Effectiveness  Date,  when there is an
effective   Registration   Statement   that  names  the   Holders  as   "selling
stockholders"  therein  and  under  which  the  Holders  are  permitted  to sell
Registrable  Securities,  and the Holders  require the Company to register their
Registrable  Securities in an Underwritten  Offering (other than an Underwritten
Offering that the Company has otherwise undertaken); then, in the case of (i) or
(ii) above,  in addition to the cost and expenses  that the Holders are required
to pay under this Section, the Holders shall pay all legal, accounting and other
fees and  expenses  reasonably  incurred by the Company in  connection  with the
preparation  and  filing of such  Underwritten  Offering  and  cooperation  with
requests of the Managing Underwriters.

        5.     Indemnification

               (a)   Indemnification   by  the  Company.   The  Company   shall,
notwithstanding  any termination of this Agreement,  indemnify and hold harmless
each  Holder,  the  officers,  directors,  agents  (including  any  underwriters
retained by such  Holder in  connection  with the offer and sale of  Registrable
Securities),   brokers   (including  brokers  who  offer  and  sell  Registrable
Securities  as principal as a result of a pledge or any failure to perform under
a margin call of Common  Stock),  investment  advisors and  employees of each of
them, each Person who controls any such Holder (within the meaning of Section 15
of the  Securities  Act or Section  20 of the  Exchange  Act) and the  officers,
directors,  agents and employees of each such controlling Person, to the fullest
extent permitted by applicable law, from and against any and all losses, claims,
damages,  liabilities,   settlements,   judgments,  costs  (including,   without
limitation,   costs  of   preparation   and   attorneys'   fees)  and   expenses
(collectively,  "Losses"), as incurred, arising out of or relating to any untrue
or alleged  untrue  statement of a material fact  contained in the  Registration
Statement,  any  Prospectus  or any form of  prospectus  or in any  amendment or
supplement  thereto  or in any  preliminary  prospectus,  or  arising  out of or
relating to any omission or alleged  omission of a material  fact required to be
stated therein or necessary to make the  statements  therein (in the case of any
Prospectus  or form  of  prospectus  or  supplement  thereto,  in  light  of the
circumstances under which they were made) not misleading,  except to the extent,
but only to the  extent,  that such untrue  statements  or  omissions  are based
solely  upon  information  regarding  such  Holder  furnished  in writing to the
Company by or on behalf of such  Holder  expressly  for use  therein,  or to the
extent that such  information  relates to such Holder or such Holder's  proposed
method of distribution of Registrable  Securities and was reviewed and expressly
approved  in  writing  by such  Holder  expressly  for  use in the  Registration
Statement,  such  Prospectus  or such form of  Prospectus or in any amendment or
supplement  thereto.  The  Company  shall  notify the  Holders  promptly  of the
institution, threat or assertion of any Proceeding of which the Company is aware
in connection with the transactions contemplated by this Agreement.

               (b) Indemnification by Holders. Each Holder shall,  severally and
not jointly,  indemnify and hold harmless the Company, its directors,  officers,
agents and employees,  each Person who controls the Company  (within the meaning
of Section 15 of the Securities Act and Section 20


                                      -12-

<PAGE>



of the Exchange Act), and the directors,  officers,  agents or employees of such
controlling Persons, to the fullest extent permitted by applicable law, from and
against all Losses (as  determined  by a court of  competent  jurisdiction  in a
final  judgment not subject to appeal or review)  arising solely out of or based
solely  upon  any  untrue   statement  of  a  material  fact  contained  in  the
Registration Statement,  any Prospectus,  or any form of prospectus,  or arising
solely out of or based solely upon any omission of a material  fact  required to
be stated therein or necessary to make the statements  therein not misleading to
the extent,  but only to the extent,  that such untrue  statement or omission is
contained  in any  information  so  furnished  in writing by such  Holder to the
Company  specifically  for  inclusion  in the  Registration  Statement  or  such
Prospectus or to the extent that such information relates to such Holder or such
Holder's  proposed  method of  distribution  of  Registrable  Securities and was
reviewed and expressly  approved in writing by such Holder  expressly for use in
the Registration  Statement,  such Prospectus or such form of Prospectus.  In no
event shall the liability of any selling  Holder  hereunder be greater in amount
than the dollar amount of the net proceeds received by such Holder upon the sale
of the Registrable Securities giving rise to such indemnification obligation.

               (c) Conduct of  Indemnification  Proceedings.  If any  Proceeding
shall be brought or asserted against any Person entitled to indemnity  hereunder
(an  "Indemnified  Party"),  such  Indemnified  Party  promptly shall notify the
Person from whom indemnity is sought (the "Indemnifying  Party") in writing, and
the  Indemnifying  Party  shall  assume  the  defense  thereof,   including  the
employment of counsel  reasonably  satisfactory to the Indemnified Party and the
payment of all fees and expenses  incurred in connection  with defense  thereof;
provided,  that the failure of any  Indemnified  Party to give such notice shall
not relieve the Indemnifying Party of its obligations or liabilities pursuant to
this  Agreement,  except  (and  only) to the  extent  that it  shall be  finally
determined  by a court of competent  jurisdiction  (which  determination  is not
subject to appeal or further  review) that such failure  shall have  proximately
and materially adversely prejudiced the Indemnifying Party.

               An  Indemnified  Party  shall  have the right to employ  separate
counsel in any such  Proceeding and to participate in the defense  thereof,  but
the  fees  and  expenses  of  such  counsel  shall  be at the  expense  of  such
Indemnified  Party or Parties unless:  (1) the Indemnifying  Party has agreed in
writing to pay such fees and expenses;  or (2) the Indemnifying Party shall have
failed  promptly to assume the defense of such  Proceeding and to employ counsel
reasonably satisfactory to such Indemnified Party in any such Proceeding; or (3)
the named  parties to any such  Proceeding  (including  any  impleaded  parties)
include  both  such  Indemnified  Party  and the  Indemnifying  Party,  and such
Indemnified Party shall have been advised by counsel that a conflict of interest
is likely to exist if the same counsel were to represent such Indemnified  Party
and the Indemnifying  Party (in which case, if such  Indemnified  Party notifies
the  Indemnifying  Party in writing that it elects to employ separate counsel at
the expense of the Indemnifying Party, the Indemnifying Party shall not have the
right to assume the defense  thereof and such counsel shall be at the expense of
the  Indemnifying  Party).  The  Indemnifying  Party shall not be liable for any
settlement of any such Proceeding  effected without its written  consent,  which
consent shall not be unreasonably withheld. No Indemnifying Party shall, without
the prior written consent of the Indemnified Party, effect any settlement of any
pending Proceeding in respect of which any Indemnified Party is a party,  unless
such settlement includes an unconditional release of such Indemnified Party from
all liability on claims that are the subject matter of such Proceeding.


                                      -13-

<PAGE>



               All  fees  and  expenses  of  the  Indemnified  Party  (including
reasonable  fees  and  expenses  to  the  extent  incurred  in  connection  with
investigating   or  preparing  to  defend  such   Proceeding  in  a  manner  not
inconsistent  with this  Section)  shall be paid to the  Indemnified  Party,  as
incurred,  within 10 Business Days of written notice thereof to the Indemnifying
Party  (regardless  of whether it is ultimately  determined  that an Indemnified
Party  is  not  entitled  to  indemnification  hereunder;   provided,  that  the
Indemnifying  Party may require such Indemnified Party to undertake to reimburse
all such fees and  expenses  to the extent it is finally  judicially  determined
that such Indemnified Party is not entitled to indemnification hereunder).

               (d) Contribution.  If a claim for  indemnification  under Section
5(a) or 5(b) is  unavailable  to an  Indemnified  Party  because of a failure or
refusal  of  a  governmental   authority  to  enforce  such  indemnification  in
accordance  with its terms (by reason of public policy or otherwise),  then each
Indemnifying  Party,  in lieu of  indemnifying  such  Indemnified  Party,  shall
contribute to the amount paid or payable by such  Indemnified  Party as a result
of such Losses,  in such  proportion as is  appropriate  to reflect the relative
fault of the  Indemnifying  Party and  Indemnified  Party in connection with the
actions,  statements  or omissions  that  resulted in such Losses as well as any
other relevant equitable considerations. The relative fault of such Indemnifying
Party and  Indemnified  Party shall be  determined  by reference to, among other
things,  whether any action in question,  including any untrue or alleged untrue
statement of a material fact or omission or alleged omission of a material fact,
has been  taken  or made  by,  or  relates  to  information  supplied  by,  such
Indemnifying  Party or  Indemnified  Party,  and the parties'  relative  intent,
knowledge,  access to  information  and  opportunity  to correct or prevent such
action, statement or omission. The amount paid or payable by a party as a result
of any Losses shall be deemed to include,  subject to the limita tions set forth
in Section 5(c), any reasonable  attorneys' or other reasonable fees or expenses
incurred  by such party in  connection  with any  Proceeding  to the extent such
party   would  have  been   indemnified   for  such  fees  or  expenses  if  the
indemnification  provided  for in this  Section was  available  to such party in
accordance with its terms.

               The parties  hereto agree that it would not be just and equitable
if  contribution  pursuant  to this  Section  5(d) were  determined  by pro rata
allocation or by any other method of allo cation that does not take into account
the equitable considerations referred to in the immediately preceding paragraph.
Notwithstanding  the  provisions  of this Section  5(d),  no Purchaser  shall be
required to contribute,  in the aggregate, any amount in excess of the amount by
which the  proceeds  actually  received by such  Purchaser  from the sale of the
Registrable  Securities  subject to the Pro  ceeding  exceeds  the amount of any
damages that such Purchaser has otherwise been required to pay by reason of such
untrue or alleged untrue  statement or omission or alleged  omission.  No Person
guilty of fraudulent  misrepresentation  (within the meaning of Section 11(f) of
the Securities  Act) shall be entitled to  contribution  from any Person who was
not guilty of such fraudulent misrepresentation.

               The  indemnity  and  contribution  agreements  contained  in this
Section are in addition to any liability that the Indemnifying  Parties may have
to the Indemnified Parties.



                                      -14-

<PAGE>



        6.     Miscellaneous

               (a)  Remedies.  In the event of a breach by the  Company  or by a
Holder,  of any of their  obligations  under this Agreement,  each Holder or the
Company,  as the case may be, in  addition to being  entitled  to  exercise  all
rights granted by law and under this Agreement,  including  recovery of damages,
will be entitled to specific performance of its rights under this Agreement. The
Company and each Holder agree that monetary  damages would not provide  adequate
compensation  for any losses  incurred by reason of a breach by it of any of the
provisions of this Agreement and hereby further agrees that, in the event of any
action for specific  performance  in respect of such breach,  it shall waive the
defense that a remedy at law would be adequate.

               (b) No  Inconsistent  Agreements.  Except  as  and to the  extent
specifically set forth in Schedule 6(b) attached hereto, neither the Company nor
any of its subsidiaries has, as of the date hereof, nor shall the Company or any
of its  subsidiaries,  on or after the date of this  Agreement,  enter  into any
agreement with respect to its securities  that is  inconsistent  with the rights
granted  to the  Holders  in this  Agreement  or  otherwise  conflicts  with the
provisions  hereof.  Except  as and to the  extent  specifically  set  forth  in
Schedule 6(b) attached  hereto,  neither the Company nor any of its subsidiaries
has previously entered into any agreement granting any registration  rights with
respect to any of its securities to any Person.  Without limiting the generality
of the  foregoing,  without the written  consent of the Holders of a majority of
the then outstanding Registrable Securities,  the Company shall not grant to any
Person the right to  request  the  Company to  register  any  securities  of the
Company under the Securities Act unless the rights so granted are subject in all
respects to the prior  rights in full of the Holders set forth  herein,  and are
not otherwise in conflict or inconsistent with the provisions of this Agreement.

               (c) No  Piggyback on  Registrations.  Except as and to the extent
specifically set forth in Schedule 6(b) attached hereto, neither the Company nor
any of its security  holders  (other than the Holders in such capacity  pursuant
hereto) may include  securities  of the  Company in the  Registration  Statement
other than the Registrable Securities, and the Company shall not, after the date
hereof, enter into any agreement providing any such right to any of its security
holders.

               (d)  Piggy-Back   Registrations.   If  at  any  time  during  the
Effectiveness Period there is not an effective  Registration  Statement covering
all of the Registrable Securities and the Company shall determine to prepare and
file with the  Commission a registration  statement  relating to an offering for
its own account or the account of others under the  Securities Act of any of its
equity securities, other than on Form S-4 or Form S-8 (each as promulgated under
the Securities Act) or their then equivalents  relating to equity  securities to
be issued solely in connection with any acquisition of any entity or business or
equity  securities  issuable in connection  with stock option or other  employee
benefit  plans,  then the  Company  shall  send to each  holder  of  Registrable
Securities  written notice of such determination and, if within twenty (20) days
after receipt of such notice,  any such holder shall so request in writing,  the
Company  shall  include in such  registration  statement  all or any part of the
Registrable  Securities  such  holder  requests  to be  registered.  No right to
registration of Registrable  Securities under this Section shall be construed to
limit any registration otherwise required hereunder.



                                      -15-

<PAGE>



               (e) Liquidated Damages. (i) if the Registration  Statement is not
filed on or prior to the  Filing  Date (for  purposes  hereof,  in the event the
Company files the Registration  Statement  without complying with the provisions
of Section 3(a) hereof,  such filing shall not be deemed to have  occurred),  or
(ii) if the Company fails to file with the Commission a request for acceleration
in accordance  with Rule 12d1-2  promulgated  under the Exchange Act within five
(5) days of the  date  that the  Company  is  notified  (orally  or in  writing,
whichever is earlier) by the Commission that the Registration Statement will not
be "reviewed," or not be subject to further review, or (iii) if the Registration
Statement is not declared  effective by the  Commission on or prior to the 120th
day after the  Original  Issue Date,  or (iv) if the  Registration  Statement is
filed with and declared  effective by the Commission but thereafter ceases to be
effective as to all  Registrable  Securities at any time prior to the expiration
of the Effectiveness Period, without being succeeded within 10 Trading Days by a
subsequent  Registration  Statement  filed with and  declared  effective  by the
Commission, or (v) if an amendment to the Registration Statement is not filed by
the  Company  with  the  Commission  within  ten (10)  days of the  Commission's
notifying  the  Company  that  such  amendment  is  required  in  order  for the
Registration  Statement  to be declared  effective,  (any such failure or breach
being  referred to as an "Event,"  and for purposes of clauses (i) and (iii) the
date on which such Event  occurs,  or for  purposes  of clause  (ii) the date on
which such five (5) day period is exceeded,  or for purposes of clauses (iv) and
(v) the date which such 10 Trading Day-period is exceeded,  being referred to as
"Event Date"),  then each such Purchaser may require the Company to pay to it in
cash,  1.5% of the aggregate  Stated Value of all shares of Preferred Stock then
held by it, as  liquidated  damages and not as a penalty.  In addition,  on each
monthly  anniversary  of the Event  Date  until  the  Event is cured,  each such
Purchaser  may require the Company to pay to it in cash,  2.5% of the  aggregate
Stated  Value of all shares of  Preferred  Stock then held by it, as  liquidated
damages  and not as a penalty.  A Holder  shall not be  entitled  to  liquidated
damages  for an Event for any month for which it has  elected  to deliver to the
Company an Initial Reduced  Conversion  Price Notice pursuant Section 5(c)(i) of
the Certificate of Designation in respect of such Event. However, a Holder shall
be entitled to receive both the benefits of the Initial Reduced Conversion Price
Notice and the liquidated  damages  contemplated  in this paragraph for the same
Event, but not both in the same monthly period. The Holders shall have the right
to  liquidated  damages for  multiple  and/or  successive  Events.  For purposes
hereof,  shares of Preferred  Stock for which a conversion has been requested in
accordance with the Certificate of Designation shall be deemed to be outstanding
and held by the  converting  Holder  if an Event  occurs on or prior to the date
that the holder  receives  shares of Common  Stock  from the  Company in respect
thereof.

               (f)  Amendments and Waivers.  The  provisions of this  Agreement,
including  the  provisions  of this  sentence,  may not be amended,  modified or
supplemented,  and waivers or consents to departures from the provisions  hereof
may not be given,  unless the same shall be in writing and signed by the Company
and the  Holders  of at least a  majority  of the then  outstanding  Registrable
Securities;  provided,  however,  that,  for  the  purposes  of  this  sentence,
Registrable  Securities that are owned, directly or indirectly,  by the Company,
or an Affiliate of the Company are not deemed  outstanding.  Notwithstanding the
foregoing, a waiver or consent to depart from the provisions hereof with respect
to a matter that relates  exclusively to the rights of Holders and that does not
directly  or  indirectly  affect  the  rights of other  Holders  may be given by
Holders  of at least a  majority  of the  Registrable  Securities  to which such
waiver or consent relates; provided, however, that the


                                      -16-

<PAGE>



provisions of this sentence may not be amended, modified, or supplemented except
in accordance with the provisions of the immediately preceding sentence.

               (g)  Notices.  Any and all  notices  or other  communications  or
deliveries  required or permitted to be provided  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 7:00 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 the Purchase  Agreement later than 7:00
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 address
for such notices and communications to any Purchaser shall be as set forth below
such  Purchaser's  name on Schedule 1 and, if to the Company,  to the  following
address:

                             Palatin Technologies, Inc.
                             214 Carnegie Center
                             Princeton, NJ  08540
                             Facsimile No.:  (609) 452-0880
                             Attn:  Edward J. Quilty

                             Rubin Baum Levin Constant & Friedman
                             30 Rockefeller Plaza
                             New York, NY  10112
                             Facsimile No.: (212) 698-7700

                             Attn: Faith L. Charles, Esq.

        If to any other Person who is then the registered Holder:

                             To the address of such Holder as  it appears in the
                             stock transfer books of the Company

or such other  address as may be designated  in writing  hereafter,  in the same
manner, by such Person.

               (h)  Successors and Assigns.  This  Agreement  shall inure to the
benefit of and be binding upon the successors  and permitted  assigns of each of
the parties and shall inure to the benefit of each  Holder.  The Company may not
assign its rights or obligations  hereunder without the prior written consent of
each  Holder.  A Purchaser  may assign its  respective  rights  hereunder in the
manner and to the Persons as permitted under the Purchase Agreement.

               (i)  Assignment of  Registration  Rights.  The rights of a Holder
hereunder,  including  the  right  to  have  the  Company  register  for  resale
Registrable Securities in accordance with the terms of this Agreement,  shall be
automatically assignable by such Holder to any assignee or


                                      -17-

<PAGE>



transferee of all or a portion of the Preferred Stock or Registrable  Securities
without the consent of the  Company if: (i) such Holder  agrees in writing  with
the  transferee or assignee to assign such rights,  and a copy of such agreement
is furnished to the Company within a reasonable time after such assignment, (ii)
the Company is,  within a  reasonable  time after such  transfer or  assignment,
furnished with written notice of (a) the name and address of such  transferee or
assignee,  and (b) the securities with respect to such  registration  rights are
being transferred or assigned,  (iii) at or before the time the Company receives
the written notice  contemplated by clause (ii) of this Section,  the transferee
or  assignee  agrees  in  writing  with  the  Company  to be bound by all of the
provisions of this  Agreement,  and (iv) such  transfer  shall have been made in
accordance  with the  applicable  requirements  of the Purchase  Agreement.  The
rights  to  assignment  shall  apply  to the  Purchaser's  (and  to  subsequent)
successors and assigns.

               (j) Counterparts. This Agreement may be executed in any number of
counterparts,  each of which when so executed  shall be deemed to be an original
and, all of which taken together shall constitute one and the same Agreement. In
the event that any  signature  is  delivered  by  facsimile  transmission,  such
signature shall create a valid binding  obligation of the party executing (or on
whose behalf such signature is executed) the same with the same force and effect
as if such facsimile signature were the original thereof.

               (k) Governing  Law;  Submission to  Jurisdiction.  This Agreement
shall be governed by and construed in  accordance  with the laws of the State of
New York,  without  regard to  principles of conflicts of law. Each party hereby
irrevocably  submits  to the  non-exclusive  jurisdiction  of any New York state
court sitting in the Borough of Manhattan,  the state and federal courts sitting
in the City of New York or any federal court sitting in the Borough of Manhattan
in the City of New York (collectively,  the "New York Courts") in respect of any
Proceeding arising out of or relating to this Agreement, and irrevocably accepts
for  itself  and in  respect of its  property,  generally  and  unconditionally,
jurisdiction  of the New York  Courts.  Each  party  irrevocably  waives  to the
fullest extent it may effectively do so under  applicable law any objection that
it may now or hereafter  have to the laying of the venue of any such  proceeding
brought in any New York Court and any claim that any such Proceeding  brought in
any New York Court has been brought in an  inconvenient  forum.  Nothing  herein
shall  affect the right of any  Holder.  Each party  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 such party at the
address in effect for  notices to it under this  Agreement  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.

               (l)  Cumulative  Remedies.   The  remedies  provided  herein  are
cumulative and not exclusive of any remedies provided by law.

               (m) Severability. If any term, provision, covenant or restriction
of this  Agreement is held by a court of competent  jurisdiction  to be invalid,
illegal,  void  or  unenforceable,  the  remainder  of  the  terms,  provisions,
covenants  and  restrictions  set forth  herein  shall  remain in full force and
effect and shall in no way be affected, impaired or invalidated, and the parties
hereto  shall use their  reasonable  efforts to find and  employ an  alternative
means to achieve the same or


                                      -18-

<PAGE>



substantially  the same  result as that  contemplated  by such term,  provision,
covenant  or  restriction.  It is  hereby  stipulated  and  declared  to be  the
intention of the parties  that they would have  executed  the  remaining  terms,
provisions, covenants and restrictions without including any of such that may be
hereafter declared invalid, illegal, void or unenforceable.

               (n) Headings.  The headings in this Agreement are for convenience
of reference only and shall not limit or otherwise affect the meaning hereof.

               (o) Shares Held by The Company and its  Affiliates.  Whenever the
consent  or  approval  of  Holders  of a  specified  percentage  of  Registrable
Securities is required hereunder,  Registrable Securities held by the Company or
its  Affiliates  (other than the  Purchasers  or  transferees  or  successors or
assigns thereof if such Persons are deemed to be Affiliates  solely by reason of
their  holdings  of  such  Registrable  Securities)  shall  not  be  counted  in
determining  whether  such  consent or approval was given by the Holders of such
required percentage.



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                             SIGNATURE PAGE FOLLOWS]



                                      -19-

<PAGE>




               IN WITNESS WHEREOF,  the parties have executed this  Registration
Rights Agreement as of the date first written above.


                                  The Company
                                  -----------

                                  PALATIN TECHNOLOGIES, INC.



                                  By:_____________________________
                                      Name: Edward J. Quilty
                                     Title: Chairman and Chief Executive Officer


                                  The Purchasers
                                  --------------

                                  JNC OPPORTUNITY FUND LTD.


                                  By:_____________________________
                                      Name:
                                     Title:


                                  ROBERT LEAF


                                  ________________________________
                                  Robert Leaf


                                  JOSEPH AND BARBARA STRASSMAN


                                  ________________________________
                                  Joseph Strassman  Barbara Strassman


                                  CARL F. SCHWARTZ


                                  ________________________________
                                  Carl F. Schwartz





                                      -20-





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