39744-94-0 5-(5-(Dimethylamino)propyl)-5,6,7,8-tetrahydro-5H-pyrido(4,3-b)indole dihydrochloride 5H-Pyrido(4,3-b)indole, 5,6,7,8-tetrahydro-5-(3-(dimethylamino)propyl)-, dihydrochloride 9-(gamma-Dimethylaminopropyl)-5,6,7,8-tetrahydro-gamma-carboline dihydrochloride