Isobutylurea592-17-6100 % similar Propylurea627-06-550 % similar Butylurea592-31-448 % similar Ethylurea625-52-548 % similar N-Octadecylurea2158-08-946 % similar (2-Hydroxyethyl)urea2078-71-946 % similar Albizziin1483-07-444 % similar Isovaleramide541-46-841 % similar Methylurea598-50-540 % similar Ureidopropyltrimethoxysilane23843-64-339 % similar Allylurea557-11-939 % similar Biuret108-19-039 % similar Biurea110-21-439 % similar Diisobutylamine110-96-339 % similar Hydantoic acid462-60-238 % similar Ureidopropyltriethoxysilane23779-32-037 % similar Citrulline372-75-836 % similar Citrulline627-77-036 % similar tert-Butylurea1118-12-336 % similar Homocitrulline1190-49-435 % similar