1,3-Dimethyl-2-imidazolidinone 1,3-Dimethylethyleneurea 1,3-Dimethylimidazolidin-2-one 2-IMIDAZOLIDINONE, 1,3-DIMETHYL- 5-24-01-00054 (Beilstein Handbook Reference) 80-73-9 BRN 0108808 Dimethyl imidazolidinone EINECS 201-304-8 Karbomos TsEM N,N'-Dimethylethyleneurea N,N'-Dimethylimidazolidinone N,N'-Dimethylimidazolidone Rhonite 1