tert-Butylurea1118-12-3100 % similar N-(1,1-Dimethylethyl)thiourea7204-48-044 % similar Methylurea598-50-543 % similar Biuret108-19-043 % similar Biurea110-21-443 % similar Ethylurea625-52-540 % similar Semicarbazide57-56-738 % similar Propylurea627-06-537 % similar 2-(1-Methylethylidene)hydrazinecarboxamide110-20-336 % similar Isobutylurea592-17-636 % similar Butylurea592-31-436 % similar N-Octadecylurea2158-08-934 % similar (2-Hydroxyethyl)urea2078-71-933 % similar Aminourea hydrochloride563-41-733 % similar Allylurea557-11-932 % similar Pivalamide754-10-932 % similar N-(4-Methylphenyl)urea622-51-531 % similar Hydantoic acid462-60-231 % similar Allantoic acid99-16-131 % similar N,N′-Bis(1,1-dimethylethyl)thiourea4041-95-630 % similar