OPSS-PEG-OPSS (PDP-PEG-PDP), a MW 3.4K thiol group-reactive PEG derivative, can be used to modify biomolecules or other materials through its available thiol groups. The ortho-pyridyl disulfide reacts with the thiol group to form a stable disulfide bond while releasing the thiol-pyridyl group.
AxisPharm offers 5000+ PEG Linkers with high purity. Different kinds of PEG Reagents may be available by custom synthesis.