Tetrahydropyrimidine-2-thione2055-46-1100 % similar Ethylene thiourea96-45-771 % similar N,N'-Di-N-butylthiourea109-46-669 % similar Tetrahydro-2(1H)-pyrimidinone1852-17-148 % similar N,N′-Diethylthiourea105-55-543 % similar N-Butylhydrazinecarbothioamide6610-31-742 % similar 1-Allyl-3-(2-hydroxyethyl)-2-thiourea105-81-738 % similar Triazabicyclodecene5807-14-737 % similar Dibutylurea1792-17-234 % similar 1,3-Bis[3-(dimethylamino)propyl]urea52338-87-131 % similar