N3-PEG-NH2 (MW 1000) (Azide-PEG-Amine (MW 1000)) is a heterobifunctional PEG compound featuring azide and amine groups at the termini of the PEG chain. Serving as a crucial crosslinker with a PEG chain, the azide group allows for molecular conjugation via chemical reactions, while the amine group can react with carboxylic acids or NHS esters.
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