CAS No:86329-79-5||Chemical Formula:C20H18N6Na2O7S4||Molecular Weight:628.61854||Exact Mass:627.99152 || Disodium (6R,7R)-7-[(Z)-2-(2-aminothiazol-4-yl)-2-(methoxyimino)acetylamino]-3-[(5-carboxylatomethyl-4-methylthiazol-2-yl)sulfanylmethyl]-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylate