Naming Alcohols Alcohols are named just like alkanes, but with an -ol ending. You also need to put a number in front of the name, separated with a dash, to indicate which carbon atom the -OH group is attached to. For Example: Pentane with an OH on the first carbon atom becomes 1-pentanol.
1-pentanol
Pentane with an OH on the second carbon becomes 2-pentanol.
2-pentanol
