(6R-(6alpha,7beta(R*)))-3-(Acetoxymethyl)-7-((5-amino-5-carboxypentanoyl)amino)-8-oxo-5-thia-1-azabicyclo(4.2.0)oct-2-ene-2-carboxylic acid, potassium salt 5-Thia-1-azabicyclo(4.2.0)oct-2-ene-2-carboxylic acid, 3-((acetyloxy)methyl)-7-((5-amino-5-carboxy-1-oxopentyl)amino)-8-oxo-, potassium salt, (6R-(6alpha,7beta(R*)))- 57847-70-8 61-24-5 EINECS 260-987-0 Potassium (6R,7R)-3-acetoxymethyl-7-(D-5-amino-5-carboxypentanamido)-ceph-3-em-4-carboxylic acid