2-Phenyl-4-(2-(1-piperidinyl)ethyl)-2H-pyrido(3,2-b)-1,4-oxazin-3(4H)-one 2H-Pyrido(3,2-b)-1,4-oxazin-3(4H)-one, 2-phenyl-4-(2-(1-piperidinyl)ethyl)- 86267-53-0