Ampicillin EP Impurity D Sodium salt

Chemical Name: (4S)-2-[[[(2R)-2-amino-2-phenylacetyl]amino]carboxymethyl]-5,5-dimethyl-1,3-thiazolidine-4-carboxylic acid Sodium salt (as per EP); (4S)-2-{[(R)-2-Amino-2-phenylacetamido]methyl}-5,5-dimethylthiazolidine-4-carboxylic acid Sodium salt (as per USP)

Smile: N[C@@H](C(NC(C(O)=O)C1SC(C)(C)[C@@](C(O)=O)([H])N1)=O)C2=CC=CC=C2.[Na]