Ms-PEG3-Ms linker contains with two mesyl groups. The mesyl groups are good leaving groups and readily replaced by thiol and amine groups from biomolecules. It can also be used as protecting groups for primary alcohols. The PEG spacer increases the solubility of the compound in aqueous media.
Axispharm offers 3000+ PEG Linkers with high purity. Different kinds of PEG Reagents may be available by custom synthesis.