PEG5-Ms contains a mesyl group and a hydroxyl group. The mesyl group can be easily replaced by thiol and amino group through a nucleophilic substitution. It can also serve as protecting groups for primary alcohols. The hydroxyl group can be derivatized for bioconjugation purpose. The hydrophilic PEG linker increase the solubility of the compound in aqueous media.
AxisPharm offers 4000+ PEG Linkers with high purity. Different kinds of PEG Reagents may be available by custom synthesis.