Description
N-(t-butyl ester-PEG3)-N-bis(PEG3-azide) is a branched PEG linker developed by BroadPharm, featuring two terminal azide groups and a t-butyl ester. The azide functionalities are highly reactive with alkynes such as DBCO, BCN, and propargyl reagents through click chemistry methods. Additionally, the t-butyl protected carboxylic acid can be deprotected under mild acidic conditions.