• CAS No.：
  1314378-11-4
• Synonyms：
  Bis-PEG4-NHS ester
  
• Purity：
  ≥95%
• MF：
  C₂₀H₂₈N₂O₁₂
• MW：
  488.4
• 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.

NHS-PEG4-NHS (Bis-PEG4-NHS ester) is a versatile PEG linker featuring two NHS ester groups, separated by a hydrophilic PEG4 spacer that improves solubility in aqueous environments. The NHS ester groups enable efficient conjugation to primary amines (-NH2) on proteins, amine-modified oligonucleotides, and other amine-containing molecules, facilitating bioconjugation and crosslinking in biochemical and drug development applications.

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