Description
Azido-PEG16-t-butyl ester is a long-chain PEG reagent that is soluble in water and features an azide group along with a t-butyl ester moiety. The carboxylic acid protected by the t-butyl group can be deprotected under acidic conditions. The azide (N3) can participate in reactions with alkynes, BCN, or DBCO through click chemistry methods.