Azido-PEG4-4-nitrophenyl carbonate 是一种 PROTAC linker，属于 PEG 类。可用于合成 PROTAC 分子。Azido-PEG4-4-nitrophenyl carbonate 是一种点击化学试剂。它含有 Azide 基团，可以和含有 Alkyne 基团的分子发生铜催化的叠氮-炔环加成反应（CuAAc)。还可以和含有 DBCO 或 BCN 基团的分子发生菌株促进的炔-叠氮环加成反应 (SPAAC)。 Azido-PEG4-4-nitrophenyl carbonate is a PEG-based PROTAC linker that can be used in the synthesis of PROTACs[1]. Azido-PEG4-4-nitrophenyl carbonate is a click chemistry reagent, it contains an Azide group and can undergo copper-catalyzed azide-alkyne cycloaddition reaction (CuAAc) with molecules containing Alkyne groups. Strain-promoted alkyne-azide cycloaddition (SPAAC) can also occur with molecules containing DBCO or BCN groups.