Product Description
Biotin conjugated PEG-COOH (BIO-PEG-COOH) is a linear heterobifunctional PEG reagent with a biotin and a carboxylic acid. It is a useful crosslinking or bioconjugation reagent with a PEG spacer. Biotin can bind to avidin and streptavidin with high specificity and affinity and achieve non-covalent PEGylation.