Biurea110-21-4100 % similar Biuret108-19-060 % similar Hydroxyurea127-07-153 % similar Semicarbazide57-56-750 % similar Methylurea598-50-550 % similar Methylol urea1000-82-447 % similar 1-Phenylsemicarbazide103-03-746 % similar Ethylurea625-52-545 % similar tert-Butylurea1118-12-343 % similar Hydroxyethyl urea2078-71-943 % similar Aminourea hydrochloride563-41-743 % similar Allylurea557-11-941 % similar Propylurea627-06-541 % similar Acetone semicarbazone110-20-339 % similar Hydantoic acid462-60-239 % similar Isobutylurea592-17-639 % similar Butylurea592-31-439 % similar Cyclohexylurea698-90-839 % similar Allantoic acid99-16-139 % similar N-Octadecylurea2158-08-938 % similar