(6R,7R)-7-((R)-2-(4-Ethyl-2,3-dioxo-1-piperazinylcarboxamido)-2-(4-hydroxyphenyl)acetamido)-3-((1-methyl-1H-tetrazol-5-yl)thiomethyl)-8-oxo-5-thia-1-azabicyclo(4.2.0)oct-2-en-2-carbonsaeure 5-Thia-1-azabicyclo(4.2.0)oct-2-ene-2-carboxylic acid, 7-(((((4-ethyl-2,3-dioxo-1-piperazinyl)carbonyl)amino)(4-hydroxyphenyl)acetyl)amino)-3-(((1-methyl-1H-tetrazol-5-yl)thio)methyl)-8-oxo-, (6R-(6-alpha,7-beta(R*)))- 62893-19-0 62893-20-3 72448-63-6 BRN 0603333 CEFOPERAZONE CP 52640 Cefobid Cefoperazono [INN-Spanish] Cefoperazonum [INN-Latin] EINECS 263-749-4