1H-Imidazo(4,5-b)pyridine, 2-(2,4-dimethoxyphenyl)- 2-(2,4-Dimethoxyphenyl)-1H-imidazo(4,5-b)pyridine 61393-38-2 AR-L 57 AR-L 57 CL AR-L-57 CL AR-L57