m-PEG-thiol, MW 30K is a linear monofunctional PEG with a free thiol group at one end. The thiol group can react with maleimide or disulfide. m-PEG-thiol, MW 30K PEGylates thiol groups on cysteine side chains under mild reaction conditions.
AxisPharm offers 5000+ PEG Linkers with high purity. Different kinds of PEG Reagents may be available by custom synthesis.