英文别名4-Thiazolidinecarboxylic acid, 5,5-dimethyl-2-[[(2-phenylacetyl)amino]methyl]-, (2R,4S)-; (2R,4S)-5,5-dimethyl-2-((2-phenylacetamido)methyl)thiazolidine-4-carboxylic acid; Penicillin G Potassium Impurity F; Benzylpenicillin Sodium Impurity Ⅳ Impurity F