Vinorelbine Ditartrate - Impurity A

NA

Methyl (3aS,4R,5aR,10bR,13aR)-4-(acetyloxy)-3,5-epoxy-3a-ethyl-9-[(6R,8S)-4- ethyl-8-(methoxycarbonyl)-1,3,6,7,8,9-hexahydro-2,6-methano-2H-azacyclodecino [4,3-b]indol-8-yl]-8-methoxy-6-methyl-3a,4,5,5a,6,11,12,13a-octahydro-3H- indolizino[8,1-cd]carbazole-5-carboxylate;(3aS,3a1R,4R,5aR,10bR)-Methyl 4-acetoxy-3a-ethyl-9-((6R,8S)-4-ethyl-8-(methoxycarbonyl)-1,3,6,7,8,9-hexahydro-2,6-methanoazecino[4,3-b]indol-8-yl)-8-methoxy-6-methyl-3a,3a1,4,5,5a,6,11,12-octahydro-3H-3,5-epoxyindolizino[8,1-cd]carbazole-5-carboxylate;