What is the base name for the following compound?
C-C-C-C-C=0

Explanation:

Step 1. Draw the longest continuous chain of carbon atoms

C-C-C-C

There are four carbon atoms, so the base name is butane.

Step 2. Identify the functional group of highest priority

C-C-C-CHO

The group with highest priority is the aldehyde group.

We drop the "-e" fron "butane" and add the suffix "-al".

The name becomes butanal.

Step 3. Identify the other functional group.

C-C(OH)-C-CHO

The

OH

group is a hydroxyl group.

The name becomes hydroxybutanal.

Step 4. Number the atoms in the main chain and locate the hydroxyl group