105-63-5 2-Butenoic acid, 4-[(aminocarbonyl)amino]-4-oxo-, methyl ester, (Z)- Maleamic acid, N-carbamoyl-, methyl ester Maleuric acid, methyl ester Methyl N-carbamoylmaleamate Methyl maleurate N-Carbamoylmaleamic acid, methyl ester NSC41787