EXHIBIT 2.1 PURCHASE AGREEMENT BETWEEN: - SANOFI-SYNTHELABO, a French societe anonyme with a share capital of 1,461,174,016 Euros, having its principal office at 174, avenue de France, 75013 Paris ("Sanofi") represented by Mr. Christian Mignon, duly...Purchase Agreement • July 16th, 1999 • Bio Rad Laboratories Inc • Laboratory analytical instruments
