(6R-trans)-7-Amino-3-(hydroxymethyl)-8-oxo-5-thia-1-azabicyclo(4.2.0)oct-2-ene-2-carboxylic acid 15690-38-7 5-Thia-1-azabicyclo(4.2.0)oct-2-ene-2-carboxylic acid, 7-amino-3-(hydroxymethyl)-8-oxo-, (6R-trans)- EINECS 239-787-2