1-(2-phenoxyphenyl)pyrrole-2,5-dione

4-[2-(2,4-dichlorophenyl)hydrazinyl]-4-oxobut-2-enoic acid

4-(3-methylanilino)-4-oxobut-2-enoic acid

N-(3,4-二氯苯基)马来酸

4-(2-methylanilino)-4-oxobut-2-enoic acid