• CAS No.：
  784105-33-5
• Synonyms：
  Amine-PEG3-COOH；NH2-PEG3-CH2CH2COOH
  alpha-Amine-omega-propionicacidtriethyleneglycol
  3-(2-(2-(2-Aminoethoxy)ethoxy)ethoxy)propanoicacid
  Amino-PEG3-propionicacid
  α-Amine-ω-propionic acid triethylene glycol
  
• Purity：
  ≥95%
• MF：
  C₉H₁₉NO₅
• MW：
  221.25
• 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-PEG3-COOH (Amino-PEG3-acid) is a monodispersed PEG derivative containing an amino group with a terminal carboxylic acid. The amino group is reactive with carboxylic acids, activated NHS esters, carbonyls (ketone, aldehyde) etc. The terminal carboxylic acid can be reacted with primary amine groups in the presence of activators (e.g. EDC, or DCC) to form a stable amide bond. NH2-PEG3-COOH can be used as PROTAC linker. 

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