ATP-competitive inhibitor of p210bcr/abl tyrosine kinase; selectively induces apoptosis in chronic myeloid leukemia (CML) K562 cells. Inhibits in vivo tyrosine phosphorylation of Gab2, CrkL and p210bcr/abl (IC50 values are 80, 80 and 170 nM respectively). Potently inhibits p210bcr/abl autophosphorylation in vitro (IC50 = 5 nM). Also potently inhibits c-Src and KIT (IC50 values are 0.8 and 50 nM, respectively). Purity 98%. MW (observed): 429.27