phenoxymethylpenicillin calcium and its Impurities

Phenoxymethylpenicillin, also known as penicillin V and penicillin VK. It is a phenoxymethyl analog of Penicillin G, or benzylpenicillin. An orally active naturally penicillin, phenoxymethylpenicillin is used to treat mild to moderate infections in the respiratory tract, skin, and soft tissues caused by penicillin G­-sensitive microorganisms.Reference standards of Phenoxymethylpenicillin Calcium API,and its pharmacopeial, non pharmacopeial impurities, and stable isotopes are listed below.