Cefalotin EP Impurity B Potassium salt

Chemical Name: (6R,7R)-3-(hydroxymethyl)-8-oxo-7-[(thiophen-2-ylacetyl)amino]-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid Potassium salt (as per EP)

Smile: O=C(C(N12)=C(CO)CS[C@]2([H])[C@H](NC(CC3=CC=CS3)=O)C1=O)[O-].[K+]