2-03-00-00423 (Beilstein Handbook Reference) 73758-52-8 BRN 1812594 BUTYRIC ACID, beta-AMINO-beta-UREIDO-, ETHYL ESTER Butanoic acid, 3-amino-3-((aminocarbonyl)amino)-, ethyl ester (9CI) EINECS 277-587-7 Ethyl 3-amino-3-((aminocarbonyl)amino)butyrate Ethyl beta-amino-beta-ureido-n-butyrate NSC 140752