N-(Azido-PEG4)-biocytin is a PEG4 biotin linker with a terminal azide for click chemistry. It enables high-affinity streptavidin binding and bioorthogonal conjugation for bioconjugation, labeling, and targeted delivery.
Polyethylene Glycol PEG Linkers > Biotin PEG > Biotin-PEG-Azide
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