Product Description
4-Arm PEG-Thiol (4-arm PEG-SH) is a multiarm PEG derivative with thiol groups at each terminal of the four arms connected to one pentaerythritol core. The reactive free thiol, SH, sulfhydryl, or mercapto groups selectively react with maleimide and transition metal surface including gold, silver, etc. PEG-SH can be easily air oxidized to form S-S disulfide (disulphide) bonds, which can be reversed with reducing agents. It is a useful reagent for reversible PEGylation and PEG hydrogel.
