• CAS No.：
  1191078-74-6
• Synonyms：
  Amine-PEG5-COOH
  Amino-PEG5-acid
  Amino-PEG5-propionic acid
  α,ω-amine--propionic acid pentaethylene glycol
  
• Purity：
  ≥95%
• MF：
  C₁₃H₂₇NO₇
• MW：
  309.4
• 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.

NH2-PEG5-COOH (Amino-PEG5-acid, CAS: 1191078-74-6) is a PEG derivative featuring both an amino group and a terminal carboxylic acid group. The hydrophilic PEG spacer enhances the compound's solubility in aqueous solutions, making it suitable for various applications. The amino group is reactive with carboxylic acids, activated NHS esters, and carbonyls (such as ketones and aldehydes), while the terminal carboxylic acid can form stable amide bonds with primary amine groups using activators like EDC or HATU. This dual functionality makes NH2-PEG5-COOH ideal for applications such as protein and peptide conjugation, drug delivery systems, and the creation of complex bioconjugates. Its ability to form stable links with biomolecules facilitates the development of advanced therapeutic and diagnostic products.

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