(2,5-dioxopyrrolidin-1-yl) 4-(2-hydroxyethyl)benzoate

ditert-butyl butanedioate

(2,5-dioxopyrrolidin-1-yl) 2-(methyldisulfanyl)acetate

(2,5-dioxopyrrolidin-1-yl) 2-(2,4-dinitrophenyl)sulfanylacetate

2-溴-N-[2-[(2,5-二氧代-1-吡咯烷基)氧基]-2-氧代乙基]-乙酰胺