What is the IUPAC name of the compound with the formula CH3-CH(CH3)-CH2-CHO?

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Q: What is the IUPAC name of the compound with the formula CH3-CH(CH3)-CH2-CHO?

Solution: The longest carbon chain contains 4 carbons, and the aldehyde group is at the end, making it 3-methylbutanal.

Steps: 6

Step 1: Identify the longest carbon chain in the compound. The formula CH3-CH(CH3)-CH2-CHO has a chain of 4 carbon atoms.
Step 2: Count the number of carbon atoms in the longest chain. The chain is CH3-CH-CH2-CHO, which has 4 carbons.
Step 3: Determine the functional group. The compound has an aldehyde group (CHO) at the end of the chain.
Step 4: Name the longest chain. Since there are 4 carbons, the base name is 'butanal' (for a 4-carbon aldehyde).
Step 5: Identify any branches. There is a methyl group (CH3) attached to the second carbon of the chain.
Step 6: Combine the names. The methyl group is on the 3rd carbon, so the full name is '3-methylbutanal'.