Synonyms: Erythromycin A Ethylsuccinate, Erythromycin A 2′-(ethyl succinate), (3R,4S,5S,6R,7R,9R,11R,12R,13S,14R)-4-[(2,6-dideoxy-3-C-methyl-3-O-methyl-α-l-ribo-hexopyranosyl)oxy]-14-ethyl-7,12,13-trihydroxy-3,5,7,9,11,13-hexamethyl-6-[[3,4,6-trideoxy-3-(dimethylamino)-2-O-(4-ethoxy-4-oxobutanoyl)-β-d-xylo-hexopyranosyl]oxy]oxacyclotetradecane-2,10-dione
