Imatinib Impurity E

1,4-bis-[4-[4-Methyl-3-[[4-(pyridin-3-yl)pyrimidin-2- yl]amino]phenyl] carbamoyl] benzyl piperazine ;|1,4-Bis-[4-[4-methyl-3-[[4-(pyridin-3-yl)pyrimidin-2-yl]amino]phenthylpiperazinyl-N-methyl) Imatinib Dimer Impurity|1,4-Bis-[4-[4-methyl-3-[[4-(pyridin-3-yl)pyrimidin-2-yl]amino]phenyl]carbamoyl]benzylpiperazine;|4,4'-(piperazine-1,4-diylbis(methylene))bis(N-(4-methyl-3-((4-(pyridin-3-yl)pyrimidin-2-yl)amino)phenyl)benzamide);|Des(methylpiperazinyl-N-methyl) Imatinib Dimer Impurity;|N-[4-Methyl-3-[(4-pyridin-3-ylpyrimidin-2-yl)amino]phenyl]-4-[[4-[[4-[[4-methyl-3-[(4-pyridin-3-ylpyrimidin-2-yl)amino]phenyl]carbamoyl]phenyl]methyl]piperazin-1-yl]methyl]benzamide;