p-hydroxyphenylacetic acid N-oxysuccinimide ester

(S)-2-(4-(((2-amino-4-hydroxypteridin-6-yl)methyl)amino)benzamido)-5-((2,5-dioxopyrrolidin-1-yl)oxy)-5-oxopentanoic acid

1H-吲哚-3-丙酸,2,5-二氧代-1-吡咯烷基酯

3α,12α-dihydroxy-5β-cholan-24-oic acid 2,5-dioxopyrrolidin-1-yl ester

2,5-dioxopyrrolidin-1-yl (1-cyclohexyl-4-nitro-2-oxo-2,5-dihydro-1H-pyrrol-3-yl)glycinate