Imatinib N-Acetyl Impurity

N-[3-[Acetyl[4-(3-pyridinyl)-2-pyrimidinyl]amino]-4-methylphenyl]-4-[(4-methyl-1-piperazinyl)methyl]benzamide is a useful research chemical used in the preparation of highly pure imatinib or pharmaceutically acceptable salts. It may also be useful in the preparation of aromatic aminobenzylpiperazine N-oxide and composition thereof for treating bacterial infectious diseases.