Chemical Name: Nintedanib Esylate Impurity F
Synonym: Nintedanib Esilate - Impurity F (EP/BP) (As per EP Monograph 37.2); Dimethyl 3,3'-(((((2,2'-(piperazine-1,4-diyl)bis(acetyl))bis(methylazanediyl))bis(4,1-phenylene))bis(azanediyl))bis(phenylmethanylylidene))(3Z,3'Z)-bis(2-oxoindoline-6-carboxylate); Methyl (3Z)-3-{[(4-{2-[4-({[4-({[(3Z)-6-(methoxycarbonyl)-2-oxo-2,3-dihydro-1H-indol-3-ylidene] (phenyl) methyl}amino)phenyl](methyl)carbamoyl}methyl)piperazin-1-yl] -N-methyl acetamido}phenyl)amino](phenyl)methylidene}-2-oxo-2,3-dihydro-1H-indole-6-carboxylate