Cefazolin EP Impurity H Sodium salt

Chemical Name: (6R,7R)-3-[(acetyloxy)methyl]-7-amino-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid Sodium salt (as per EP); (6R,7R)-3-(Acetoxymethyl)-7-amino-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid Sodium salt (as per USP)

Smile: O=C(C(N12)=C(COC(C)=O)CS[C@]2([H])[C@H](N)C1=O)O.[Na]