5-Thia-1-azabicyclo(4.2.0)oct-2-ene-2-carboxylic acid, 3-((acetyloxy)methyl)-7-((3,5-dichloro-4-oxo-1-(4H)-pyridinyl)acetyl)amino)-8-oxo-, monosodium salt, (6R-trans)- 67763-91-1 EINECS 267-046-3 Emd 29645 Sodium (6R-trans)-3-(acetoxymethyl)-7-((3,5-dichloro-4-oxo-1(4H)-pyridyl)acetamido)-8-oxo-5-thia-1-azabicyclo(4.2.0)oct-2-ene-2-carboxylate