m-PEG-azide, MW 20K is a monofunctional PEG derivative that can be used to modify proteins, peptides and other materials. Azido groups can react with copper-catalyzed alkynes in aqueous solution. It is also easily reduced to an amine group. Pegylation can increase solubility and stability and reduce the immunogenicity of peptides and proteins.
AxisPharm offers 5000+ PEG Linkers with high purity. Different kinds of PEG Reagents may be available by custom synthesis.