A cell-permeable imidazopyridazine compound that acts as a potent, reversible and ATP-competitive inhibitor of Pim-1,2,3, Flt-3 and haspin kinase activities (IC50=7, 363, 69, 44 and 34nM, respectively) with moderate (40% inhibition at 1uM for c-kit) to excellent selectivity over CDKs, Aurora, Chk1, IKK, JNK, Abl, Raf, PKA, PKC and PI 3-K among 300-kinases. Shown to inhibit RNA synthesis, block phosphorylation of c-Myc-Ser62 and STAT3-Tyr705, and decrease c-Myc and Mcl-1 protein levels; cause cell cycle arrest and induce apoptosis in CLL lymphocytes and in AML cells, and efficiently arrest the growth of several prostate cancer cells (IC50 <10uM).
Storage and Stability:Lyophilized powder may be stored at -20°C. Stable for 12 months at -20°C. Reconstitute with sterile buffer or dH2O. Aliquot to avoid repeated freezing and thawing. Store at -20°C. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap. Further dilutions can be made in assay buffer.