Biotin-PEG-Amine (MW 40000) (Biotin-PEG-NH2 (MW 40000)) is a biotinylated PEG polymer that contains a free amine group (-NH2). This amine group can react with activated NHS esters to form an amide bond. The biotin-labeled compound can bind to avidin or streptavidin for further purification or detection.
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