Azido-PEG3-NHS ester

Azido-PEG3-NHS ester is a azide linker used on click chemistry. The azide group can react with alkyne such as BCN, DBCO, Propargyl group via Click Chemistry to yield a stable triazole linkage. The NHS ester can be applied to label the primary amines (-NH2) of proteins, amine-modified oligonucleotides, and other amine-containing molecules.