What is the IUPAC name for the compound CH3-CH2-CH(CH3)-CH2-CH3?

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Q: What is the IUPAC name for the compound CH3-CH2-CH(CH3)-CH2-CH3?

Solution: The longest carbon chain has five carbons, and the methyl group is on the third carbon, making the IUPAC name 3-methylpentane.

Steps: 6

Step 1: Identify the carbon chain in the compound. Count the number of carbon atoms in the longest continuous chain.
Step 2: In the compound CH3-CH2-CH(CH3)-CH2-CH3, the longest chain has 5 carbon atoms.
Step 3: Name the longest chain. Since it has 5 carbon atoms, it is called 'pentane'.
Step 4: Look for any branches (substituents) on the main chain. Here, there is a methyl group (CH3) attached to the third carbon.
Step 5: Indicate the position of the methyl group. Since it is on the third carbon, we write '3-methyl'.
Step 6: Combine the names. The full IUPAC name is '3-methylpentane'.