1,5-Dihydro-5-butyl-4H-imidazo(4,5-c)quinolin-4-one 133305-99-4 4H-Imidazo(4,5-c)quinolin-4-one, 1,5-dihydro-5-butyl- 5-n-Butyl-1H,5H-imidazo(4,5-c)quinolin-4-one