There are many different types of alcohol. The proper name for alcohol is alkanol. The main functional group of alcohols (alkanols) is the hydroxyl or -OH group. Alcohols differ in the number of carbons atoms in the molecules and with the placement of the -OH group in the molecule.
The most common alcohol is ethanol which is commonly produced by fermentation.
| Name of alcohol | Chemical formula of alcohol | Structure of alcohol |
| methanol | CH3OH | ![]() |
| ethanol | CH3CH2OH or C2H5OH | ![]() |
| propan-1-ol | CH3CH2CH2OH or C3H7OH | ![]() |
| propan-2-ol | CH3CH(OH)CH3 | ![]() |