• Synonyms：
  4-ArmPEG-Thiol
  
• Purity：
  ≥95%
• Recommended Storage Condition：
  Store at -5°C,keep in dry and avoid sunlight.
• Uses：
  Applicated in medical research, drug-release, nanotechnology and new materials research, cell culture. In the study of ligand, polypeptide synthesis support, a graft polymer compounds, new materials, and polyethylene glycol-modified functional coatings and other aspects of the active compound.

4-ArmPEG-SH is a multi-arm PEG derivative. Each end of the four arms of 4-Arm PEG-SH has a thiol group, and its reactive free sulfhydryl group can selectively react with the surface of maleimide and transition metal including gold, silver, etc.

4-ArmPEG-SH is also a reversible PEGylation and PEG hydrogel reagent. PEG-SH in 4-ArmPEG-SH can be well oxidized by air to form disulfide bonds.