Erythromycin EP Impurity E

Erythromycin A Enol Ether|Erythromycin A Enol ether ;|Erythromycin A Enol Ether ; (2R,3R,4S,5R,8R,9S,10S,11R,12R)-9-[(2,6-Dideoxy-3-C-methyl-3-O-methyl-?-L-ribo-hexopyranosyl)oxy]-5-ethyl-3,4-dihydroxy-2,4,8,10,12,14-hexamethyl-11-[[3,4,6-trideoxy-3-(di|Erythromycin EP Impurity E (Erythromycin A Enol Ether)