Synonyms: Erythromycin fumarate;AC1O6AF8;Oxacyclotetradecane, erythromycin deriv.;Erythromycin, (E)-2-butenedioate (1:1) (salt);Erythromycin, (2E)-2-butenedioate (1:1) (salt);(E)-but-2-enedioic acid; (3R,4S,5S,6R,7R,9R,11R,12R,13S,14R)-6-[(2S,3R,4S,6R)-4-(dimethylamino)-3-hydroxy-6-methyloxan-2-yl]oxy-14-ethyl-7,12,13-trihydroxy-4-[(2R,4R,5S,6S)-5-hydroxy-4-methoxy-4,6-dimethyloxan-2-yl]oxy-3,5,7,9,11,13-hexamethyl-oxacyclotetradecane-2,10-dione;144331-28-2