2-Acetyl-3-phenyl-tetrahydro-1,2,4-oxadiazine-5-one 2H-1,2,4-Oxadiazin-5(6H)-one, dihydro-2-acetyl-3-phenyl- 83395-43-1 Dihydro-2-acetyl-3-phenyl-2H-1,2,4-oxadiazin-5(6H)-one Rgh 4615