1,5-Dihydro-5-butyl-1-(1-methylethyl)-4H-imidazo(4,5-c)quinolin-4-one monohydrochloride 133306-09-9 4H-Imidazo(4,5-c)quinolin-4-one, 1,5-dihydro-5-butyl-1-(1-methylethyl)-, monohydrochloride 5-n-Butyl-1-isorpopyl-1H,5H-imidazo(4,5-c)quinolin-4-one hydrochloride