1H-Imidazo(4,5-b)pyridin-2(3H)-one, 5-chloro-1-ethyl-3-phenyl- 2H-Imidazo(4,5-b)pyridin-2-one, 1,3-dihydro-5-chloro-1-ethyl-3-phenyl- 5-Chloro-1-ethyl-3-phenyl-1H-imidazo(4,5-b)pyridin-2(3H)-one 89660-26-4 BRN 5073466