• CAS No.：
  87450-10-0
• Synonyms：
  Propargyl-PEG4-OH
  2-[2-[2-(2-prop-2-ynoxyethoxy)ethoxy]ethoxy]ethanol
  
• Purity：
  ≥95%
• MF：
  C₁₁H₂₀O₅
• MW：
  232.3
• 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-PEG4-OH (Propargyl-PEG4-alcohol, CAS 87450-10-0) is a biocompatible PEG derivative featuring a terminal alkyne (propargyl) group and a primary alcohol. The short PEG4 spacer (two ethylene glycol units) imparts hydrophilicity and flexibility while keeping the linker compact—ideal for precision applications. The alkyne end enables copper-catalyzed azide-alkyne click chemistry to form stable triazole bonds, while the hydroxyl terminus is available for further functionalization (e.g. esterification, etherification). 

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