CLR18: Clarithromycin EP Impurity R

Clarithromycin Impurity R (USP) ; 

N-Desmethyl 6-O-Desmethyl Clarithromycin ; 

N-Desmethyl Erythromycin A ;

CAS # 992-62-1 ;

C36H65NO13 ;

MW: 719.9 ;