Oseltamivir Mesilate and its Impurities

Oseltamivir, sold under the brand name Tamiflu, is an antiviral medication used to treat and prevent influenza A and influenza B, viruses that cause the flu. Reference standards of Oseltamivir Mesilate API, and its pharmacopeial, non pharmacopeial impurities, and stable isotopes are listed below.