• CAS No.：
  126422-57-9
• Synonyms：
  Propargyl-PEG3-Propargyl
  Bis-propargyl-PEG3
  Diethylene glycol bis(2-propynyl) ether
  
• Purity：
  ≥95%
• MF：
  C₁₀H₁₄O₃
• MW：
  182.2
• 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.

Alkyne-PEG3-Alkyne (Bis-propargyl-PEG3, CAS 126422-57-9) is a bifunctional PEG derivative featuring propargyl (alkyne) groups at both termini, separated by a three-unit ethylene glycol (PEG3) spacer. This structure enables efficient copper-catalyzed azide-alkyne cycloaddition (CuAAC), facilitating the formation of stable triazole linkages essential for bioconjugation and materials science applications. 

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