英文别名(2R)-(2R)-2-Phenylglycyl-2-[(2R,4S)-4-carboxy-5,5-dimethyl-2-thiazolidinyl]glycine; Ampicilloic Acid; α-(2-Amino-2-phenylacetamido)-4-carboxy-5,5-dimethyl-2-thiazolidineacetic Acid; Ampicillin Impurity 4 (Ampicillin EP Impurity D); the penicilloic acid of ampicillin; Ampicillin impurity 3/Ampicillin EP impurity D 
