[CAS NO. 1353011-95-6]  Cl-NH-PEG4-NHS

• CAS No.：
  1353011-95-6
• Synonyms：
  Chloroacetamido-PEG4- NHS ester
  
• Purity：
  ≥95%
• MF：
  C₁₇H₂₇ClN₂O₉
• MW：
  438.14
• 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.

Cl-NH-PEG4-NHS (Chloroacetamido-PEG4-NHS ester) is a versatile PEG linker featuring chloroacetamide and NHS ester functional groups. The chloroacetamide provides a reactive chlorine group that readily undergoes nucleophilic substitution, while the NHS ester is an activated ester that reacts efficiently with primary amines to form stable amide bonds. The PEG4 spacer increases the hydrophilicity of the compound in aqueous environments, making it ideal for use in bioconjugation, drug delivery, and other applications where enhanced solubility is essential.

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