1-(3-(Dimethylamino)propyl)benz(cd)indol-2(1H)-one hydrochloride 1-(3-Dimethylaminopropyl)-2-oxo-1,2-dihydrobenz(c,d)indole hydrochloride 20904-09-0 Benz(cd)indol-2(1H)-one, 1-(3-(dimethylamino)propyl)-, monohydrochloride