Piperacillin EP Impurity D

Chemical Name: (2S,5R,6R)-6-[(2R)-2-[(2S,5R,6R)-6-[(2R)-2-(4-ethyl-2,3-dioxopiperazine-1-carboxamido)-2-phenylacetamido]-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxamido]-2- phenylacetamido]-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid (as per EP); (2S,5R,6R)-6-((R)-2-{(2S,5R,6R)-6-[(R)-2-(4-Ethyl-2,3-dioxopiperazine-1-carboxamido)-2-phenylacetamido]-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxamido}-2-phenylacetamido)-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid (as per USP)

Smile: O=C([C@@H](C(C)(C)S[C@]1([H])[C@@H]2NC([C@H](NC([C@@H](C(C)(C)S[C@]3([H])[C@@H]4NC([C@H](NC(N5C(C(N(CC)CC5)=O)=O)=O)C6=CC=CC=C6)=O)N3C4=O)=O)C7=CC=CC=C7)=O)N1C2=O)O