Step 1: Identify the longest carbon chain in the compound. The longest chain here has 4 carbon atoms, which is called butane.
Step 2: Number the carbon atoms in the chain from one end to the other. Start from the end closest to the hydroxyl (OH) group.
Step 3: Determine the position of the hydroxyl (OH) group. In this case, it is on the second carbon.
Step 4: Combine the name of the carbon chain with the position of the hydroxyl group. Since the hydroxyl group is on the second carbon, we name it butan-2-ol.
