C8H18O

The molecular formula C₈H₁₈O (molar mass: 130.23 g/mol) may refer to:

• Di-tert-butyl ether
• Dibutyl ether
• 2-Ethylhexanol
• Octanols
  • 1-Octanol
  • 2-Octanol
  • 3-Octanol