Exhibit 99.1


                               CAMBREX CORPORATION
     Certification Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002
                            (18 U.S.C. Section 1350)



         Pursuant to the requirements of Section 906 of the  Sarbanes-Oxley  Act
of 2002 (18 U.S.C.  Sections 1350(a) and (b)), the undersigned hereby certify as
follows:

1.       James A. Mack is the Chairman of the Board and Chief Executive Officer
         of Cambrex Corporation (the "Company").

2.       To the best of my knowledge:

         (A)      The Company's  Form 10-Q for the quarterly  period ending June
                  30, 2002,  accompanying this Certification,  in the form filed
                  with the  Securities  and Exchange  Commission  (the "Report")
                  fully complies with the  requirements  of Section 13(a) of the
                  Securities Exchange Act of 1934 (the "Exchange Act"); and

         (B)      The information in the Report fairly presents, in all material
                  respects, the financial condition and results of operations of
                  the Company.



Dated:  August 14, 2002


                                                 /s/ James A. Mack
                                                --------------------------
                                                 James A. Mack,
                                                 Chairman of the Board and
                                                 Chief Executive Officer