Cefoperazone Dihydrate ;

(6R,7R)-7-[[(2R)-2-[[(4-Ethyl-2,3-dioxopiperazin-1-yl)carbonyl] amino]-2-(4-hydroxyphenyl)acetyl]amino]-3-[[(1-methyl-1H-tetrazol-5-yl) sulfanyl]methyl]-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid dihydrate ; 

CAS # 62893-19-0 ;

C25H31N9O10S2 ;

MW: 681.7 ;