2(1H)-Pyrimidinone, tetrahydro-1,3-dimethyl- 5-24-01-00197 (Beilstein Handbook Reference) 7226-23-5 BRN 0110562 CCRIS 4322 Dimethylpropyleneurea EINECS 230-625-6 N,N'-Dimethyltrimethyleneurea Tetrahydro-1,3-dimethyl-1H-pyrimidin-2-one Tetrahydro-1,3-dimethyl-2(1H)pyrimidine