Ceftazidime EP Impurity B

Chemical Name: (6R,7R)-7-[[(2E)-2-(2-aminothiazol-4-yl)-2-[(1-carboxy-1-methylethoxy)imino]acetyl]amino]-8-oxo-3-[(pyridin-1-ium-1-yl)methyl]-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylate (as per EP)

Synonym: 4-(2-fluorophenyl)morpholine

Smile: O=C(C(N12)=C(C[N+]3=CC=CC=C3)CS[C@]2([H])[C@H](NC(/C(C4=CSC(N)=N4)=N/OC(C)(C(O)=O)C)=O)C1=O)[O-]