2-Hydroxy-3-isobutyl-9,10-dimethoxy-1,2,3,4,6,7-hexahydro-11bH-benzo(a)quinolizine 2-Hydroxytetrabenazine 2H-Benzo(a)quinolizin-2-ol, 1,3,4,6,7,11b-hexahydro-9,10-dimethoxy-3-(2-methylpropyl)- 3466-75-9 dihydrotetrabenazine