Cefepime EP Impurity E

Chemical Name: (6R,7R)-7-Amino-3-[(1-methylpyrrolidinio)methyl]-8-oxo-5-thia-1-azabicyclo [4.2.0]oct-2-ene-2-carboxylate (as per EP); 1-{[(6R,7R)-7-Amino-2-carboxy-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-en-3-yl]methyl}-1-methylpyrrolidin-1-ium (as per USP)

Smile: O=C1[C@](N)([H])[C@@]2([H])SCC(C[N+]3(C)CCCC3)=C(C([O-])=O)N12