European Pharmacopoeia (EP) Reference Standard Synonym(s): (6 R ,7 R )-7-[[(2 E )-(2-Aminothiazol-4-yl)(methoxyimino)acetyl]amino]-3-[[(2-methyl-5, 6-dioxo-1,2,5,6-tetrahydro-1,2,4-triazin-3-yl)sulphanyl]methyl]-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid Empirical Formula:...