CAS No:97148-38-4 ||Chemical Formula:C22H22N6O7S2||Molecular Weight:546.57300||Exact Mass:546.09914||(6R,7R)-7-[[(2E)-2-(2-aminothiazol-4-yl)-2-[(1-carboxy-1-methylethoxy)imino]acetyl]amino]-8-oxo-3-[(1-pyridinio)methyl]-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylate