133306-21-5 1H-Imidazo(4,5-c)quinoline-2,4-dione, 3,5-dihydro-5-butyl-1-methyl- 3,5-Dihydro-5-butyl-1-methyl-1H-imidazo(4,5-c)quinoline-2,4-dione BRN 5821142