英文别名(2R,4S)-2-((R)-((R)-2-Amino-2-phenylacetamido)(carboxy)methyl)-5,5-dimethylthiazolidine-4-carboxylic acid; the penicilloic acid of ampicillin; Ampicilloic Acid; Ampicillin Impurity 4; [2R-[2α[R*(R*)],4β]]-α-[(AMinophenylacetyl)aMino]-4-carboxy-5,5-diMethyl-2; (2R)-(2R)-2-Phenylglycyl-2-[(2R,4S)-4-carboxy-5,5-diMethyl-2-thiazolidinyl]glycine; α-(2-AMino-2-phenylacetaMido)-4-carboxy-5,5-diMethyl-2-thiazolidineacetic Acid; Ampicillin Impurity 15; Ampicillin impurity 3/Ampicillin EP impurity D 
