The high-purity TCO-PEG8-Biotin provided by Axispharm is a PEG derivative containing a TCO group and a biotin moiety at the other end. This reagent can be used to label biotin sites with TCO moieties that bind to tetrazine-bearing biomolecules. The hydrophilic PEG spacer improves the water solubility of the compound and increases the flexibility of the conjugate. The biotin group binds strongly to streptavidin and avidin proteins.
AxisPharm offers 5000+ PEG Linkers with high purity. Different kinds of PEG Reagents may be available by custom synthesis.
