Potent and selective cyclin-dependent kinase (CDK) 1, 2, 5, 7 and 9 inhibitor. Apoptosis inducer. Potent glycogen synthase kinase (GSK-3alpha/beta) inhibitor.Storage and Stability:Short-term Storage: +4°CLong-term Storage: -20°CStable for at least 2 years after receipt when stored at -20°C.