139339-09-6 3,5-Dihydro-3-ethyl-5-phenyl-4H-imidazo(4,5-c)(1,8)naphthyridin-4-one 4H-Imidazo(4,5-c)(1,8)naphthyridin-4-one, 3,5-dihydro-3-ethyl-5-phenyl- BRN 4877084