N3-PEG-NH2 (MW 20000) (Azide-PEG-Amine (MW 20000)) is a heterobifunctional PEG compound characterized by azide and amine groups located at the termini of the PEG chain. Serving as a significant crosslinking agent with a PEG backbone, the azide component facilitates molecular conjugation through chemical reactions, while the amine group is reactive with carboxylic acids or NHS esters.
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