(Z)-4-((Aminocarbonyl)amino)-4-oxo-2-butenoic acid 105-61-3 2-Butenoic acid, 4-((aminocarbonyl)amino)-4-oxo-, (Z)- AI3-32778 EINECS 203-314-8 Maleamic acid, N-carbamoyl- (6CI,7CI,8CI) Maleic acid monoureide Maleinuric acid Maleuric acid Maleylurea N-Carbamoylmaleamic acid