CAS No:1000980-60-8||Chemical Formula:C22H22N6O7S2 ||Molecular Weight:546.57300||Exact Mass:546.09914 || (2R,6R,7R)-7-((Z)-2-(2-aminothiazol-4-yl)-2-(((2-carboxypropan-2-yl)oxy)imino)acetamido)-8-oxo-3-(pyridin-1-ium-1-ylmethyl)-5-thia-1-azabicyclo[4.2.0]oct-3-ene-2-carboxylate