CAS No:36922-16-4 ||Chemical Formula:C20H20N6O6S2 ||Molecular Weight:504.53600 ||Exact Mass:504.08857 ||(6R,7R)-7-((R)-2-acetoxy-2-phenylacetamido)-3-(((1-methyl-1H-tetrazol-5-yl)thio)methyl)-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid