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

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Question: What is the IUPAC name of the compound with the structure CH3-CH(CH3)-CH2-CH3?

Options:

Correct Answer: 2-methylbutane

Solution:

The longest carbon chain has 4 carbons (butane) with a methyl group on the second carbon, making it 2-methylbutane.

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

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

Step 1: Identify the structure of the compound. The structure is CH3-CH(CH3)-CH2-CH3.
Step 2: Count the number of carbon atoms in the longest continuous chain. There are 4 carbon atoms in a row.
Step 3: Name the longest chain. A chain with 4 carbon atoms is called butane.
Step 4: Look for any branches (substituents) on the main chain. There is a methyl group (CH3) attached to the second carbon.
Step 5: Combine the names. Since there is a methyl group on the second carbon of butane, the full name is 2-methylbutane.

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