(-)-Flavopiridol hydrochloride 131740-09-5 4H-1-Benzopyran-4-one, 2-(2-chlorophenyl)-5,7-dihydroxy-8-(3-hydroxy-1-methyl-4-piperidinyl)-, hydrochloride, (-)-cis- 4H-1-Benzopyran-4-one, 2-(2-chlorophenyl)-5,7-dihydroxy-8-[(3R,4S)-3-hydroxy- 1-methyl-4-piperidinyl]-, hydrochloride, rel- FLAVOPIRIDOL Flavopiridol hydrochloride NSC649890