1-Phenyl-3-methyl-5-chloroimidazo(4,5-b)pyridin-2-one 1H-Imidazo(4,5-b)pyridin-2(3H)-one, 5-chloro-3-methyl-1-phenyl- 2H-Imidazo(4,5-b)pyridin-2-one, 1,3-dihydro-5-chloro-3-methyl-1-phenyl- 5-Chloro-3-methyl-1-phenyl-1H-imidazo(4,5-b)pyridin-2(3H)-one 89660-28-6 BRN 5052712