1852-17-1 2(1H)-Pyrimidinone, tetrahydro- 2-(1H)-Tetrahydropyrimidinone 2-Ketohexahydropyrimidine 2-Pyrimidinol, 3,4,5,6-tetrahydro- Hexahydro-2(1H)-pyrimidinone Hexahydropyrimidin-2-one NSC21315 Propyleneurea Pyrimidine, hexahydro-2-oxo- Urea, 1,3-trimethylene- Urea, N,N'-(1,3-propanediyl)-