Model apoptosis inducer. Potent cell-permeable inhibitor of a variety of protein kinases, e.g. protein kinase C (PKC), CDK1/cyclin B (IC50~5nM), CDK2/cyclin A (IC50=7nM), CDK4/cyclin D (IC50=3-10µM), CDK5/p25 (IC50=4nM), GSK-3β (IC50=15nM), Pim-1 kinase (IC50=10nM).Binds do the ATP binding domain. Did not inhibit PKC-ζ. At 1µM induced apoptosis in CHO cells. Inhibits topoisomerase II directly by blocking transfer of phosphodiester bonds from DNA to active site tyrosine. Alternative name: Antibiotic AM-2282. Purity: ≥99% (HPLC). Appearance: Off-white to green powder. Solubility: Soluble in ethyl acetate, DMSO (25mg/ml) or dimethyl formamide (25mg/ml); only slightly soluble in chloroform and methanol. Insoluble in water. Long Term Storage: +4°C.