Exhibit 21 Subsidiaries of Registrant State or Other Jurisdiction Name Under which Name of Incorporation Business is conducted ---- ------------------------------------------- Pharmaceutical Resources, Inc. Par Pharmaceutical, Inc. New Jersey Par Pharmaceutical, Inc. PRX Distributors, Ltd. Delaware Inactive ParCare, Ltd. New York Newly formed Par Pharmaceutical, Inc. Quad Pharmaceuticals, Inc. Indiana Inactive Par Printing Enterprises, Inc. New Jersey Inactive Generic Innovations, Inc. New Jersey Inactive Advanced Biopharm, Inc. Delaware Inactive PRX Distributors, Ltd. D609 Corporation Delaware Newly formed