CAS No:N/A||Chemical Formula:C19H18N6O7S2||Molecular Weight:506.50800||Exact Mass:506.06784||(6R,7R)-7-((R)-2-(formyloxy)-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 5-oxide