1,2,3,3a,4,5-Hexahydro-3-(2-butenyl)-6H-indolo(3,2,1-de)(1,5)naphthyridin-6-one, hydrochloride 3-(2-Butenyl)-1,2,3,3a,4,5-hexahydrocanthin-6-one hydrochloride 67877-76-3 6H-Indolo(3,2,1-de)(1,5)naphthyridin-6-one, 1,2,3,3a,4,5-hexahydro-3-(2-butenyl)-, monohydrochloride