Synonyms: Imatinib Mesilate Imp. F (EP), 4-Methyl-N3-[4-(3-pyridinyl)-2-pyrimidinyl]-1,3-benzenediamine, N-(5-Amino-2-methylphenyl)-4-(3-pyridyl)-2-pyrimidineamine, 4-Methyl-N3-[4-(3-pyridin-3-yl)pyrimidin-2-yl]benzene-1,3-diamine, Imatinib Imp F (EP), 4-Methyl-N3-[4-(pyridin-3-yl)pyrimidin-2-yl]benzene-1,3-diamine, Imatinib Mesilate Impurity F, Imatinib Impurity F,4-Methyl-N3-[4-(pyridin-3-yl)pyrimidin-2-yl]benzene-1,3-diamine, 4-Methyl-3-[4-(3-pyridyl)pyrimidin-2-ylamino]aniline