73758-52-8 Butanoic acid, 3-amino-3-[(aminocarbonyl)amino]-, ethyl ester Butyric acid, .beta.-amino-.beta.-ureido-, ethyl ester Ethyl .beta.-amino-.beta.-ureido-N-butyrate Isopropyldithio[(2-amino-1-methyl)ethyl]carbamic acid inner salt NSC140752 WLN: ZVMXZ1&1VO2