t-Boc-N-Amido-PEG3-azide is a PEG reagent containing an azide group and Boc-protected amino group, it is reactive with alkyne, BCN, DBCO via Click Chemistry. The Boc group can be deprotected under mild acidic conditions to form the free amine.
Definition
ChEBI: Tert-Butyl (2-(2-(2-(2-azidoethoxy)ethoxy)ethoxy)ethyl)carbamate is a carbamate ester.