1 Exhibit 16 COOPERS & LYBRAND L.L.P. One Post Office Square Boston, Massachusetts 02109 September 12, 1996 Securities and Exchange Commission 450 Fifth Street N.W. Washington, DC 20594 Gentlemen: We have read the statements made by ChiRex Inc. (copy attached), which we understand was filed with the Commission on September 12, 1996, pursuant to Item 4 of Form 8-K, as part of the Company's Form 8-K report dated September 5, 1996. We agree with the statements concerning our Firm in such Form 8-K. Very truly yours, Coopers & Lybrand L.L.P.