N-(Azido-PEG3)-N-bis(PEG4-Boc)

N-(Azido-PEG3)-N-bis(PEG4-t-butyl ester) is a branched conjugation reagent with a terminal azide group. The azide group enables PEGylation via Click Chemistry. The t-butyl protected carboxyl groups can be deprotected under mild acidic conditions.

N-(Azido-PEG3)-N-bis(PEG4-Boc) is a PEG-based PROTAC linker that can be used in the synthesis of PROTACs[1]. N-(Azido-PEG3)-N-bis(PEG4-Boc) 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. It can also undergo strain-promoted alkyne-azide cycloaddition (SPAAC) reactions with molecules containing DBCO or BCN groups.

PEGs

[1] An S, et al. Small-molecule PROTACs: An emerging and promising approach for the development of targeted therapy drugs. EBioMedicine. 2018 Oct;36:553-562 DOI:10.1016/j.ebiom.2018.09.005