β-丙氨酸

琥珀酰胺

methyl 3-(2-oxopyrrolidin-1-yl)prop-2-enoate

6-[1-[(1,1-二甲基乙氧基)羰基]肼基]-3-吡啶羧酸 2,5-二氧代-1-吡咯烷基酯

1-((4,6-dimethylpyrimidin-2-yl)thio)pyrrolidine-2,5-dione