Roxithromycin Impurity K

Chemical Name: (3R,4S,5S,6R,7R,9R,11S,12R,13S,14R,E)-6-(((2S,3R,4S,6R)-4-(dimethylamino)-3-hydroxy-6-methyltetrahydro-2H-pyran-2-yl)oxy)-14-ethyl-7,12,13-trihydroxy-4-(((2R,4R,5S,6S)-5-hydroxy-4-methoxy-4,6-dimethyltetrahydro-2H-pyran-2-yl)oxy)-10-(((2-(hydroxymethoxy)ethoxy)methoxy)imino)-3,5,7,9,11,13-hexamethyloxacyclotetradecan-2-one

Synonym: Cefazolin USP Impurity g ; 7-Aminocephalosporanic Acid ; 7-ACA

Smile: OCOCCOCO/N=C([C@H](C)[C@@H](O)[C@](C)(O)[C@@H](CC)O1)\[C@H](C)C[C@@](C)(O)[C@H](O[C@@H]2O[C@H](C)C[C@H](N(C)C)[C@H]2O)[C@@H](C)[C@H](O[C@@H]3O[C@@H](C)[C@H](O)[C@@](OC)(C)C3)[C@@H](C)C1=O