| Synonyms: | Azithromycin EP Impurity K/(2S,4R,4a'R,5S,6S,7'R,8'S,9'R,10'R,13'R,15'R,16'R,17'S,17a'S)-16'-(((2S,3R,4S,6R)-4-(dimethylamino)-3-hydroxy-6-methyltetrahydro-2H-pyran-2-yl)oxy)-7'-ethyl-5,8',9',15'-tetrahydroxy-4-methoxy-4,6,8',10',11',13',15',17'-octamethy;Azithromycin Impurity 11（Azithromycin EP Impurity K）;C14,1″-Epoxy Azithromycin;Spiro[5H-1,3-dioxino[4,5-m][1,6]oxaazacyclopentadecine-2,2'-[2H]pyran]-5-one, 7-ethyloctadecahydro-5',8,9,15-tetrahydroxy-4'-methoxy-4',6',8,10,11,13,15,17-octamethyl-16-[[3,4,6-trideoxy-3-(dimethylamino)-β-D-xylo-hexopyranosyl]oxy]-, (2S,4'R,4aR,5'S,6'S,7R,8S,9R,10R,13R,15R,16R,17S,17aS)-;C14,1′′-epoxyazithromycin(azithromycinE);(2S,4aR,4'R,5'S,6'S,7R,8S,9R,10R,13R,15R,16R,17S,17aS)-16-(((2S,3R,4S,6R)-4-(dimethylamino)-3-hydroxy-6-methyltetrahydro-2H-pyran-2-yl)oxy)-7-ethyl-5',8,9,15-tetrahydroxy-4'-methoxy-4',6',8,10,11,13,15,17-octamethylhexadecahydro-4H-spiro[[1,3]dioxino[4,5-m][1,6]oxaazacyclopentadecine-2,2'-pyran]-5(4aH)-one;(2S,4aR,4'R,5'S,6'S,7R,8S,9R,10R,13R,15R,16R,17S,17aS)-16-(((3R,4S,6R)-4-(dimethylamino)-3-hydroxy-6-methyltetrahydro-2H-pyran-2-yl)oxy)-7-ethyl-5',8,9,15-tetrahydroxy-4'-methoxy-4',6',8,10,11,13,15,17-octamethylhexadecahydro-4H-spiro[[1,3]dioxino[4,5-m][;(2S,4`R,4aR,5`S,6`S,7R,8S,9R,10R,13R,15R,16R,17S,17aS)-7-Ethyloctadecahydro-5,8,9,15-tetrahydroxy-4-methoxy-4,6,8,10,11,13,15,17-octamethyl-16-[[3,4,6-trideoxy-3-(dimethylamino)-beta-D-xylo-hexopyranosyl]oxy]spiro[5H-1,3-dioxino[4,5-m][1,6]oxaazacyclopentadecine-2,2-[2H]pyran]-5-one |