1-ethyl-8-methoxy-3-methyl-5-propylimidazo(1,5-a)pyrido(3,2-e)pyrazinone 182282-60-6 D-22888 Imidazo(1,5-a)pyrido(3,2-e)pyrazinone, 1-ethyl-8-methoxy-3-methyl-5-propyl-