CFP02: Cefoperazone EP Impurity B

CFP02: Cefoperazone EP Impurity B

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Cefoperazone EP Impurity B ;

Cefoperazone Thioxo Impurity ;

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

CAS # 711598-76-4 ;

C25H27N9O8S2 ;

MW: 645.67 ;