EINECS 256-469-9, (6R-trans)-7-Amino-3-(((2-methyl-2H-tetrazol-5-yl)thio)methyl)-8-oxo-5-thia-1-azabicyclo(4.2.0)oct-2-ene-2-carboxylic acid, (6R-TRANS)-7-AMINO-3-[[(2-METHYL-2H-TETRAZOL-5-YL)THIO]METHYL]-8-OXO-5-THIA-1-AZABICYCLO[4.2.0]OCT-2-ENE-2-CARBOXYLIC ACID, (6R)-7alpha-Amino-3-[[(2-methyl-2H-tetrazol-5-yl)thio]methyl]-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid