CAS No:N/A||Chemical Formula:C14H13N8NaO5S3||Molecular Weight:492.47877||Exact Mass: 492.00687|| sodium (6R,7R)-7-(2-(1H-tetrazol-1-yl)acetamido)-3-(((5-methyl-1,3,4-thiadiazol-2-yl)thio)methyl)-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylate 5-oxide