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
See also 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.