KemPharm, Inc.
Pharmaceutically acceptable salts and polymorphic forms of hydrocodone benzoic acid enol ester and processes for making same

Abstract:

Compositions comprising hydrocodone benzoic acid enol ester to form novel prodrugs including hydrocodone benzoic acid enol ester salts, and various polymorphs. Also provided are processes for the preparation of hydrocodone benzoic acid enol ester salts, and various polymorphs.