Cefpodoxime Proxetil EP Impurity A Calcium Salt

Chemical Name: (6R,7R)-7-[[(2Z)-2-(2-aminothiazol-4-yl)-2-(methoxyimino)acetyl]amino]-3-(methoxymethyl)-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid Calcium salt (as per EP)

Synonym: Hydroxychloroquine USP related impurity c ; Hydroxychloroquine O-Sulfate

Smile: O=C(C(N12)=C(COC)CS[C@]2([H])[C@H](NC(/C(C3=CSC(N)=N3)=N\OC)=O)C1=O)[O-].[K+]