Nintedanib Impurity 16

Chemical Name: Dimethyl (E)-3-(ethoxy(phenyl)methylene)-2-oxoindoline-1,6-dicarboxylate

Synonym: 1,1'-((1R,2R,3S,4R,5R,6S)-4-(((2R,3R,4R,5S)-4-formyl-4-hydroxy-3-(((2S,3S,4S,5R,6S)-4-hydroxy-6-(hydroxymethyl)-3-(methylamino)-5-(((2R,3S,4S,5S,6S)-3,4,5-trihydroxy-6-(hydroxymethyl)tetrahydro-2H-pyran-2-yl)oxy)tetrahydro-2H-pyran-2-yl)oxy)-5-methyltetrahydrofuran-2-yl)oxy)-2,5,6-trihydroxycyclohexane-1,3-diyl)diguanidine