There are two isomers of propanol.

• 1-Propanol, n-propanol, or propan-1-ol: CH₃CH₂CH₂OH, the most common meaning
• 2-Propanol, isopropyl alcohol, isopropanol, or propan-2-ol: (CH₃)₂CHOH

• Propanal (propionaldehyde) differs in spelling from propanol by a single letter and is a different compound.
• Propranolol is a drug used for reducing blood pressure and hand tremors.