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

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Question: What is the correct IUPAC name for the compound CH3-CH2-CH(CH3)-OH?

Options:

  1. 2-Propanol
  2. 1-Butanol
  3. 3-Methyl-1-butanol
  4. 2-Methyl-1-propanol

Correct Answer: 2-Methyl-1-propanol

Solution: 

The correct IUPAC name for CH3-CH2-CH(CH3)-OH is 2-Methyl-1-propanol, as the longest chain has three carbons and the hydroxyl group is on the first carbon.

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

Practice Questions

Q1
What is the correct IUPAC name for the compound CH3-CH2-CH(CH3)-OH?
  1. 2-Propanol
  2. 1-Butanol
  3. 3-Methyl-1-butanol
  4. 2-Methyl-1-propanol

Questions & Step-by-Step Solutions

What is the correct IUPAC name for the compound CH3-CH2-CH(CH3)-OH?
  • Step 1: Identify the longest carbon chain in the compound. In CH3-CH2-CH(CH3)-OH, the longest chain has three carbon atoms.
  • Step 2: Number the carbon atoms in the longest chain starting from the end closest to the hydroxyl (OH) group. This gives us 1, 2, and 3.
  • Step 3: Identify the position of the hydroxyl (OH) group. It is on the first carbon (C1).
  • Step 4: Identify any substituents on the longest chain. There is a methyl (CH3) group on the second carbon (C2).
  • Step 5: Combine the information to name the compound. The substituent (methyl) is on carbon 2, and the main chain is a propanol (3 carbon alcohol) with the hydroxyl group on carbon 1.
  • Step 6: Write the final IUPAC name as 2-Methyl-1-propanol.
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