105-63-5 2-Butenoic acid, 4-((aminocarbonyl)amino)-4-oxo-, methyl ester, (Z)- AI3-50575 EINECS 203-316-9 Maleamic acid, N-carbamoyl-, methyl ester (8CI) Maleuric acid, methyl ester Methyl N-carbamoylmaleamate Methyl maleurate N-Carbamoylmaleamic acid, methyl ester NSC 23993