Chemical Name: (6R,7R)-7-[[(2R)-2-[[(4-Ethyl-2,3-dioxo-1-piperazinyl)carbonyl]amino]-2-(4-hydroxyphenyl)acetyl]amino]-3-[[(1-methyl-1H-tetrazol-5-yl)thio]methyl]-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic Acid; Biocefazon; Cefob; Cefobid; Cefoperazine; Cefoperazone; Cefozon; Cephaperazon