1H-Pyrido(3,4-b)indol-6-ol, 2,3,4,9-tetrahydro- 2,3,4,9-Tetrahydro-1H-pyrido(3,4-b)indol-6-ol 23778-34-9 5-23-12-00046 (Beilstein Handbook Reference) 5-Hydroxytetrahydro-beta-carboline 5-Hydroxytryptoline 6-Hydroxytetrahydronorharmane BRN 0643872 Plectocomine