A potent inhibitor of ALK (IC50 = 0.07 nM) that is less effective at IGF-1R and InsR (IC50s = 3.2 and 100 nM, respectively); drives cell death in (ALK+) Karpas-299 lymphoma cells with an IC50 value of 41.5 nM, while killing (ALK-) U937 cells with an IC50 value of 1,718 nM.