18472-22-5 3-(p-Chlorophenyl)-2-(3-diethylaminopropoxy)-4H-pyrazino(1,2-a)pyrimidin-4-one hydrobromide 4H-Pyrazino(1,2-a)pyrimidin-4-one, 3-(p-chlorophenyl)-2-(3-diethylaminopropoxy)-, hydrobromide