Biotin-PEG-azide, MW 5,000 is used for non-radioactive labeling and purification of proteins and other target molecules. Biotin has exceptionally strong binding with avidin or streptavidin. The azide moiety can react with terminal alkyne via CuAAC or with cyclooctyne (BCN/DBCO) via SPAAC to form a stable triazole linkage. Reagent grade, for research purpose.
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