SECURITIES AND EXCHANGE COMMISSION
                              Washington, DC 20549

                                   FORM 12b-25

                        Commission File Number: 000-26422

                           NOTIFICATION OF LATE FILING

(Check One):
|_| Form 10-K   |_| Form 11-K   |_| Form 20-F   |X| Form 10-Q   |_| Form N-SAR
|_| Form 10KSB

               For Period Ended: June 30, 2000

               [ ] Transition Report on Form 10-K
               [ ] Transition Report on Form 20-F
               [ ] Transition Report on Form 11-K
               [ ] Transition Report on Form 10-Q
               [ ] Transition Report on Form N-SAR

               For the Transition Period Ended:
                                               ---------------------------------

     If the notification relates to a portion of the filing checked above,
identify the Item(s) to which the notification relates:
                                                       -------------------------

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

                                     PART I
                             REGISTRANT INFORMATION

                          Discovery Laboratories, Inc.
- --------------------------------------------------------------------------------
                            Full Name of Registrant

                                  Ansan, Inc.
- --------------------------------------------------------------------------------
                           Former Name if Applicable

                        350 South Main Street, Suite 307
- --------------------------------------------------------------------------------
           Address of Principal Executive Office (Street and Number)

                         Doylestown, Pennsylvania 18901
- --------------------------------------------------------------------------------
                            City, State and Zip Code

                                    PART II
                            RULES 12b-25(b) AND (c)

     If the subject report could not be filed without unreasonable effort or
expense and the registrant seeks relief pursuant to Rule 12b-25(b), the
following should be completed. (Check appropriate box.)  |X| Yes  |_| No

|X| | (a) The reasons described in reasonable detail in Part III of this form
    |     could not be eliminated without unreasonable effort or expense;
    |
|X| | (b) The subject annual report, semi-annual report, transition report on
    |     Form 10-K, 20-F, 11-K or N-SAR, or portion thereof, will be filed on
    |     or before the 15th calendar day following the prescribed due date; or

| the subject quarterly report or transition report on Form 10-Q, or | portion thereof will be filed on or before the fifth calendar day | following the prescribed due date; and | |_| | (c) The accountant's statement or other exhibit required by Rule 12b-25(c) | has been attached if applicable. PART III NARRATIVE State below in reasonable detail the reasons why Form 10-K, 11-K, 20-F, 10-Q, N-SAR, or the transition report or portion thereof, could not be filed within the prescribed time period. The delay in filing the Quarterly Report on Form 10-QSB for the period ended June 30, 2000 (the "Form 10-QSB") resulted primarily from management's determination to restate the Company's financial statements for the First Quarter of 2000 to report a compensation charge of approximately $813,000 during the quarter due to the vesting of certain other performance-based milestone options granted to employees which had not been previously reported. As a result of the significant time and effort expended by the Company's management in connection with the preparation of the Form 10-QSB/A filing referred to above, and because the Company is still in the process of completing the analysis of its results of operations for the second quarter of 2000, the Company will not be in a position to file timely its Form 10-QSB. PART IV OTHER INFORMATION (1) Name and telephone number of person to contact in regard to this notification Cynthia Davis (215) 340-4699 - -------------------------------------------------------------------------------- (Name) (Area Code) (Telephone Number) (2) Have all other periodic reports required under Section 13 or 15(d) of the Securities Exchange Act of 1934 or Section 30 of the Investment Company Act of 1940 during the preceding 12 months or for such shorter period that the registrant was required to file such report(s) been filed? If answer is no, identify report(s). |X| Yes |_| No (3) Is it anticipated that any significant change in results of operation for the corresponding period for the last fiscal year will be reflected by the earnings statements to be included in the subject report or portion thereof? |_| Yes |X| No If so: attach an explanation of the anticipated change, both narratively and quantitatively, and, if appropriate, state the reasons why a reasonable estimate of the results cannot be made. 2

Discovery Laboratories, Inc. - -------------------------------------------------------------------------------- (Name of Registrant as Specified in Charter) Has caused this notification to be signed on its behalf by the undersigned hereunto duly authorized. Date August 14, 2000 /s/ Evan Myrianthopoulos ---------------------------------------- Evan Myrianthopoulos Vice President, Finance (Principal Financial Officer) Date: August 14, 2000 /s/ Cynthia Davis ---------------------------------------- Cynthia Davis Controller (Principal Accounting Officer) Instruction: The form may be signed by an executive officer of the registrant or by any other duly authorized representative. The name and title of the person signing the form shall be typed or printed beneath the signature. If the statement is signed on behalf of the registrant by an authorized representative (other than an executive officer), evidence of the representative's authority to sign on behalf of the registrant shall be filed with the form. ATTENTION Intentional misstatements or omissions of fact constitute Federal criminal violations. (See 18 U.S.C. 1001) 3