1 EXHIBIT 23(a) - 12 - 2 CONSENT OF INDEPENDENT CERTIFIED PUBLIC ACCOUNTANTS Syntex Corporation: We hereby consent to the incorporation by reference in this Registration Statement and Post-Effective Amendments of our opinion dated September 21, 1993 which appears in the Company's Annual Report on Form 10-K for the year ended July 31, 1993. We also consent to the reference to us under the heading "Interests of Named Experts and Counsel" in this Registration Statement. DELOITTE & TOUCHE Panama , R.P. August 3, 1994 - 13 -