1,7-Dimethyl-5-oxo-1,2,3,5-tetrahydroimidazo(1,2-a)pyridine 2,3-Dihydro-1,7-dimethylimidazo(1,2-a)pyridin-5(1H)-one 66066-23-7 Imidazo(1,2-a)pyridin-5(1H)-one, 2,3-dihydro-1,7-dimethyl-