Erythromycin - Impurity C

41451-91-6

(2S,4R,4a'R,5S,6S,7'R,8'S,9'R,10'R,12'R,14'R,15'R,16'S,16a'S)-15'-(((2S,3R,4S,6R)-4-(Dimethylamino)-3-hydroxy-6-methyltetrahydro-2H-pyran-2-yl)oxy)-7'-ethyl-5,8',9',14'-tetrahydroxy-4-methoxy-4,6,8',10',12',14',16'-heptamethylhexadecahydro-5'H,11'H-spiro[pyran-2,2'-[1,3]dioxino[5,4-c][1]oxacyclotetradecine]-5',11'-dione; (2S,4aR,4'R,5'S,6'S,7R,8S,9R,10R,12R,14R,15R,16S,16aS)-7-Ethyl-5',8,9,14-tetrahydroxy4'-methoxy-4',6',8,10,12,14,16-heptamethyl-15-[[3,4,6-trideoxy-3-(dimethylamino)-ß-D-xylohexopyranosyl]oxy]hexadecahydrospiro[5H,11H-1,3-dioxino[5,4-c]oxacyclotetradecin-2,2'-pyrane]-5,11-dione;