• CAS No.：
  40842-04-4
• Synonyms：
  Propargyl-PEG2-Propargyl
  EthyleneGlycol1,2-Bis(2-propynyl)Ether
  1,2-Bis(2-propynyloxy)ethane
  Bis-propargyl-PEG1
  1,2-Bis(propargyloxy)ethane
  Ethylene glycol dipropargyl ether
  
• Purity：
  ≥95%
• MF：
  C₈H₁₀O₂
• MW：
  138.16
• 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-PEG2-Alkyne (Bis-propargyl-PEG2, CAS 40842-04-4) is a small, symmetric PEG derivative bearing propargyl (alkyne) groups at both ends of a two-unit (PEG2) ethylene glycol spacer.

Application
​Click Chemistry: The molecule is ideal for click chemistry applications, particularly copper-catalyzed azide-alkyne cycloaddition (CuAAC), enabling the efficient formation of stable triazole linkages. 
Biological Activity: A commonly used PROTAC linker for connecting two different ligands.

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