134049-70-0 3,5-Dihydro-5-butyl-3-(1-methylethyl)-4H-imidazo(4,5-c)quinolin-4-one monohydrochloride 4H-Imidazo(4,5-c)quinolin-4-one, 3,5-dihydro-5-butyl-3-(1-methylethyl)-, monohydrochloride 5-n-Butyl-3-isopropyl-3H,5H-imidazo(4,5-c)quinolin-4-one hydrochloride