Biotin-PEG-OH,MW 3.4K is a linear heterobifunctional PEGylation reagent with a biotin and an hydroxyl. It is a useful crosslinking or bioconjugation reagent with a PEG spacer. Biotin can bind to avidin and streptavidin with high specificity and affinity.
AxisPharm offers 4000+ PEG Linkers with high purity. Different kinds of PEG Reagents may be available by custom synthesis.