2-(5-oxofuran-2-ylidene)propanoic acid

1-(3-hydroxyphenyl)pyrrole-2,5-dione

(2E)-4-[(2-氟苯基)氨基]-4-氧代-2-丁烯酸

3-propan-2-ylfuran-2,5-dione

2,3-二氯-N-苯基马来酰亚胺