C5H12O

The molecular formula C5H12O (molar mass: 88.15 g/mol, exact mass: 88.088815) may refer to:
 * One of the amyl alcohols:
 * 1-Pentanol
 * tert-Amyl alcohol
 * Isoamyl alcohol
 * Neopentyl alcohol
 * 2-Methyl-1-butanol
 * 3-Methyl-2-butanol
 * 2-Pentanol
 * 3-Pentanol
 * An ether:
 * Methyl tert-butyl ether
 * Methyl n-butyl ether (CH3-O-C4H9)