• CAS No.：
  2708292-39-9
• Synonyms：
  HOOCCH2CH2-PEG4-NH2.HCl
  1-amino-3,6,9,12-tetraoxapentadecan-15-oic acid hydrochloride
  
• Purity：
  ≥95%
• MF：
  C₁₁H₂₄NO₆Cl
• MW：
  301.81
• 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.

NH2-PEG4-COOH.HCl is PEG linker termenated with a primary amine group (NH2) and a carboxylic acid group (COOH). The amine group allows for specific and efficient conjugation reactions with carboxylic acid-functionalized molecules or surfaces, facilitating the attachment of biomolecules or other ligands to the PEG chain. The hydrochloride salt form (HCl) of NH2-PEG4-COOH is often utilized for enhanced stability and handling convenience in aqueous solutions.

NH2-PEG4-COOH.HCl can be used in optical imaging of integrin αvβ3 expression with near-infrared fluorescent RGD dimer with tetra(ethylene glycol) linkers. Integrin αvβ3 plays great roles in tumor angiogenesis, invasion, and metastasis.

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