CAS No:68401-81-0(free base),68401-82-1(sodium)||Chemical Formula:C13H13N5O5S2||Molecular Weight:383.39700||Exact Mass:383.03581||(6R,7R)-7-((Z)-2-(2-aminothiazol-4-yl)-2-(methoxyimino)acetamido)-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid