(2-Methylpropyl)urea 1-Isobutylurea 4-04-00-00648 (Beilstein Handbook Reference) 592-17-6 BRN 1744773 Isobutylurea N-Isobutylurea NSC 27457 Urea, (2-methylpropyl)- (9CI) Urea, isobutyl-