Azithromycin EP Impurity I

Chemical Name:  (2R,3S,4R,5R,8R,10R,11R,12S,13S,14R)-2-ethyl-3,4,10-trihydroxy-13-(((2R,4R,5S,6S)-5-hydroxy-4-methoxy-4,6-dimethyltetrahydro-2H-pyran-2-yl)oxy)-11-(((2S,3R,4S,6R)-3-hydroxy-6-methyl-4-(methylamino)tetrahydro-2H-pyran-2-yl)oxy)-3,5,6,8,10,12,14-heptamethyl-1-oxa-6-azacyclopentadecan-15-one ;

Synonym: N'-Desmethyl Azithromycin; N-Demethylazithromycin (USP) ; 3'-N-Demethylazithromycin

Smile: C[C@@]1(O)[C@@H](CC)OC([C@H](C)[C@@H](O[C@@]2([H])C[C@](OC)(C)[C@@H](O)[C@H](C)O2)[C@H](C)[C@@H](O[C@@]3([H])[C@H](O)[C@@H](NC)C[C@@H](C)O3)[C@](C)(O)C[C@@H](C)CN(C)[C@H](C)[C@H]1O)=O