BZP04: Benzylpenicillin EP Impurity D

Penillic Acid of Benzylpenicillin ;

(3S,7R,7aR)-5-Benzyl-2,2-dimethyl-2,3,7,7a-tetrahydroimidazo[5,1-b]thiazole-3,7-dicarboxylic acid ;

C16H18N2O4S ;
Mol. Wt.: 334.39 ;