2,5-dimethyl-tetrahydro-cyclobuta[1,2-c,3,4-c']dipyrrole-1,3,4,6-tetraone

N-(2-氨基乙基)马来酰亚胺

叔丁基 (2-(2,5-二氧代-2,5-二氢-1H-吡咯-1-基)乙基)氨基甲酸酯

2,3-二溴马来酰亚胺

3-phenylpyrrolidine-2,5-dione