Inhibitor of human CDK1 (IC50=4nM), CDK2/cyclin A (IC50=70nM), Cdc2/cyclin B, CDK2/cyclin E (IC50=35nM), CDK4/cyclin D1 (IC50=850nM) as well as CDK5/p35 (IC50=75nM). More membrane permeable than purvalanol B. Alternative name: 6-[(3-Chloro)anilino]-2(1R)-(isopropyl-2-hydroxyethylamino)-9-isopropylpurine. Formula: C19H25N6OCl. MW: 388.9. Purity: ≥99% (NMR). Appearance: Off-white to yellow powder. Solubility: Soluble in DMSO, methanol or dichloromethane. Long Term Storage: -20°C. Handling: Keep under inert gas. Keep cool and dry.