phenibut hydrochloride and its Impurities

Phenibut Hydrochloride is used to treat anxiety. Phenibut, sold under the brand names Anvifen, Fenibut, and Noofen. phenibut mildly increases the concentration of dopamine in the brain.Reference standards of Phenibut Hydrochloride API,and its pharmacopeial, non pharmacopeial impurities, and stable isotopes are listed below.