Cefepime EP Impurity A

Chemical Name: (6R,7R)-7-[[(2E)-(2-aminothiazol-4-yl)(methoxyimino)acetyl]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-((E)-2-(2-aminothiazol-4-yl)-2-(methoxyimino)acetamido)-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-]C(C(N1[C@@]2([H])[C@H](NC(/C(C3=CSC(N)=N3)=N/OC)=O)C1=O)=C(CS2)C[N+]4(CCCC4)C)=O