Write the IUPAC names of the following compounds :
`CH_3 - underset(Cl) underset(|) CH - COOH`

Explanation

To write the IUPAC name of the given compound `CH3 - Cl - CH - COOH`, we will follow these steps:

### Step 1: Identify the longest carbon chain
The longest carbon chain in the compound contains three carbon atoms. This is because we have:
- CH3 (1 carbon)
- CH (1 carbon)
- COOH (which is attached to the second carbon)

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