[C A M B R E X LOGO]


September 6, 2006

Mr. Jim B. Rosenberg
Senior Assistant Chief Accountant
Securities and Exchange Commission
Division of Corporate Finance
Washington, DC

Dear Mr. Rosenberg:

This letter is Cambrex Corporation's ("the Company") response to your letter to
the Company dated July 28, 2006 regarding the Company's 2005 Form 10-K filed
May 26, 2006 (File No. 001-10638). The Company acknowledges that;

     o    it is responsible for the adequacy and accuracy of the disclosure in
          its filings under the Securities Exchange Act of 1934;

     o    staff comments or changes to disclosure in response to staff comments
          do not foreclose the Commission from taking any action with respect to
          these filings; and

     o    it may not assert staff comments as a defense in any proceeding
          initiated by the Commission or any person under the federal securities
          laws of the United States.

Your letter included the following inquiries related to the Company's Revenue
Recognition policy described within the Summary of Significant Accounting
Policies on page 51 of the Company's 2005 Form 10-K:

     1.   To help us understand how your method of recognizing revenue for
          contracts that contain milestone based payments complies with GAAP,
          please explain to us:

          o    Whether revenue earned from these contracts are solely milestone
               based payments.

               Company's response

               The  Company recognized $0.2 million, $10.5 million, and $12.4
               million pursuant to milestone based contracts in 2003, 2004 and
               2005 respectively. These revenues represented 0.1%, 2.4% and 2.8%
               respectively of the Company's consolidated gross sales for those
               years. The revenues earned on these contracts were predominantly
               milestone-based except for certain amounts related to consumable
               materials that are reimbursable at cost plus a small mark-up.
               Projects may shift to product-based arrangements in their later
               stages where pricing is on a per-batch basis, but the Company has
               had only one such contract to date.






Cambrex Corporation | One Meadowlands Plaza | East Rutherford, NJ 07073
Phone 201.804.3000 | Fax 201.804.9852 | www.cambrex.com


          o    The nature of the services/events that trigger milestone
               payments.

               Company's response

               The Company's milestone-based revenue occurs within its Biopharma
               segment, a provider of contract biopharmaceutical services
               including process development and manufacturing.

               Within the Biopharma segment, the services/events that trigger
               milestone payments are the completion of distinct activities
               determined jointly by the customer and the Company to be the key
               measures of progress within the arrangement. These activities
               vary by contract but often include:

                   o    Technology transfer and related activities - the Company
                        will start early-stage work related to a new biotech
                        drug by transferring the customer's knowledge related to
                        its production process into the Company's labs.
                        Milestone payments for these activities are triggered by
                        the completion of the technology transfer, the delivery
                        of a report documenting the activities performed and
                        customer acknowledgement that the service has been
                        satisfactorily completed;

                   o    Process development activities - the Company improves
                        production processes developed by the customer in order
                        to facilitate the larger-scale manufacture of the drug
                        to be used for clinical trials. There are various
                        milestones based on discrete and identifiable
                        achievements within the process development phase of the
                        arrangement. Milestone payments for these activities are
                        typically triggered by the completion of the process
                        development activities, delivery of a report documenting
                        the activities performed and customer acknowledgement
                        that the service has been satisfactorily completed;

                   o    Pre-production activities - these activities include raw
                        material procurement, testing of raw materials and
                        development of related procedures. Milestone payments
                        for these activities are triggered by the completion of
                        the testing of the raw materials, completion of the
                        related documentation and customer acknowledgement of
                        the completion of these activities;

                    o   Production activities - initial production runs have the
                        goal of demonstrating the large-scale manufacturing
                        process using the equipment that will be used for actual
                        production at a later stage. These activities are often
                        referred to as engineering runs and the milestone
                        payment is triggered by the completion of the initial
                        production run, execution of the batch record
                        documenting all related procedures performed, and
                        customer acknowledgment of the completion of these
                        activities.

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                    The  Company also produces product to be used in clinical
                    trials. Milestone payments related to this product will
                    generally be triggered by the completion of final product
                    testing and quality assurance release by both the Company
                    and the customer. However, revenue will not be recognized
                    for product to be used in clinical trials until the
                    milestone has been met and the related product has been
                    delivered to the customer or a customer-designated site.

          o    Why you believe that you are able to reasonably estimate "total
               estimated contractual costs" and "total expected contractual
               payments."

               Company's response

               The Company believes it is able to reasonably estimate total
               contractual costs due to the significant experience of both its
               management and staff-level personnel in completing the types of
               milestones and overall projects discussed above. Significant
               effort is expended by both the Company and its customers in
               coming to agreement on expected effort required and the resulting
               milestone pricing.

               Revenue is then recognized using the "lesser of" non-refundable
               milestone payments earned or the result achieved by applying
               percentage of completion based upon costs. The "lesser of"
               methodology provides additional assurance that revenue recognized
               is consistent with the company's efforts and the value
               transferred to the customer. It should be noted that it is rare
               that the percentage of completion cost formula governs revenue
               recognition; instead it is almost always the milestone payments
               that dictate how much revenue is recognized.

               Once work under a milestone arrangement is underway, project
               teams review all significant projects regularly (at least
               monthly) and total expected contractual costs are updated as
               necessary (at least quarterly).

               The Company believes it is reasonably able to estimate total
               expected contractual payments because the milestone payments are
               fixed, and as such, there is typically little variability in the
               milestone payments once the arrangement is contractually defined.

          o    Whether or not and if so how the likelihood of actually achieving
               the milestone is factored into the decision to include the amount
               in your "total estimated contractual costs" and "total expected
               contractual payments."

               Company's response

               Achievability of milestones is assessed by a Technical Evaluation
               Team within Cambrex prior to the Company's proposal to provide
               services under any

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               milestone arrangements. This team evaluates the adequacy of the
               Company's assets, people and know-how to achieve identified
               milestones and if it is determined that there is a reasonable
               level of doubt regarding the Company's ability to complete all
               milestones, the arrangement will not be approved or it will be
               proposed to the customer under a different arrangement (e.g.,
               billing based solely on time and materials incurred). The Company
               has achieved all milestones since it began entering
               milestone-based arrangements in 2003.

          o    Why using an input measure of progress on the contracts such as
               costs is appropriate when typically an output measure is a more
               appropriate measure of progress in these circumstances.

               Company's response

               Within its milestone arrangements, the company is primarily
               performing services for the client and providing detailed reports
               documenting those services. As such, our predominant input, labor
               hours, is representative of the service provided to the customer.

               Milestones in the later stages of these arrangements may include
               the production of a defined amount of drug product to be used in
               human clinical trials that would typically constitute the only
               defined and "measurable" output within a typical arrangement
               other than written reports. In such situations, revenue is
               recognized upon the delivery of the product to the customer or a
               customer-designated site.

               For a further discussion of the nature of the services triggering
               milestone payments, see the Company's response to the staff's
               related question above.

          o    Why you believe that your method reasonably recognizes revenue as
               earned and complies with GAAP.

               Company's response

               The first step in the Company's revenue recognition process for
               milestone-based arrangements is to identify all accounting units
               as defined within EITF 00-21. Our customers contract for common
               types of services during the development stages of a
               biotechnology drug's life cycle, and as any individual service or
               subset of these services fails to have stand-alone value, these
               arrangements almost always constitute one Accounting Unit.

               There is a natural tension between the Company and its customers
               related to the amount and timing of the milestone payments,
               resulting in the milestone payments reflecting a reasonable
               balance of the proportionate effort required to complete each
               milestone and the customer's perceived relative value of each
               milestone.

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               EITF 91-6 limits revenue recognition to the lesser of 1)
               non-refundable milestone payments earned and due and payable, and
               2) cost to date as a percentage of total expected cost multiplied
               by total milestone payments under the arrangement, and as such,
               provides a built-in and appropriate level of conservatism that
               mitigates the possibility of recognizing revenue too early as a
               result of "front-loaded" milestone payments. As stated earlier,
               it is rare that the cost formula governs revenue recognition;
               instead it is almost always the milestone payments that limit how
               much revenue is recognized.

          o    How your situation is analogous to the Issue in EITF 91-6 and is
               appropriate for you to use.

               Company's response

               In late 2003 when the Company entered its first milestone-based
               payment arrangement, it consulted relevant authoritative
               literature, its external auditors' engagement team,
               (PricewaterhouseCoopers) and their SAB 104 Guide, which draws an
               analogy to EITF 91-6 as an appropriate method to recognize
               milestone payments. EITF 91-6 provides a workable revenue
               recognition model for competitively negotiated contracts whereby
               billings occur based upon a schedule agreed upon in advance and
               vendor activities/outputs may vary from original estimates during
               the term of the contract. The Company believes its milestone
               contract fact patterns are reasonably analogous to the issue in
               EITF 91-6. The Company reviewed the different methods outlined by
               PwC's SAB 104 Guide by which revenue for these arrangements could
               be recognized and chose the EITF 91-6 model as the most
               appropriate method.


                                                  Sincerely,

                                                  /s/ Luke M. Beshar
                                                  ----------------------------
                                                  Luke M. Beshar
                                                  Executive Vice President and
                                                  Chief Financial Officer
                                                  Cambrex Corporation

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