Methyltetrazine-PEG4-NHS Ester is a NHS actived building block containing a methyltetrazine group. It can react with primary amines such as the side chain of lysine residues or aminosilane-coated surfaces at neutral or slightly basic pH to form covalent bonds.The resulting methyltetrazine can under conjugation with TCO bearing biomolecules via a fast bioorthogonal chemistry.
Axispharm offers 3000+ PEG Linkers with high purity. Different kinds of PEG Reagents may be available by custom synthesis.