• CAS No.：
  854601-80-2
• Synonyms：
  m-PEG5-Bromide
  
• Purity：
  ≥95%
• MF：
  C₁₁H₂₃O₅Br
• MW：
  315.2
• 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.

mPEG5-Br (CAS No. 854601-80-2) is a monodisperse PEG linker featuring a terminal bromide group. The bromide functions as an excellent leaving group in nucleophilic substitution reactions, making it a reliable handle for chemical modification and conjugation. The short PEG5 spacer enhances water solubility and helps improve compatibility in both organic and aqueous systems.

mPEG5-Br is widely used as a versatile intermediate in bioconjugation and small-molecule modification. One of its key applications is in the development of PROTACs, where PEG-based linkers help optimize molecular flexibility, solubility, and pharmacokinetic behavior. 

Biopharma PEG offers a wide range of PEG linkers on both lab and commercial scales. Email at sales@biochempeg.com and start using a superior product for your next product R&D project.