(S)-(-)-O-Demethylbuchenavianine from MedChemExpress

(S)-(-)-O-Demethylbuchenavianine (Compound (S)-(−)-1) is a flavonoidal alkaloids. (S)-(-)-O-Demethylbuchenavianine is a potent CDK inhibitor, with IC50 values of 0.03 and 0.05 µM for CDK1 and CDK5, respectively[1]