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

  1. Pentane
  2. 2-methylbutane
  3. Isopentane
  4. 2,2-dimethylpropane

📝 Detailed explanation

The longest chain has 4 carbons (butane) with a methyl group on the second carbon.
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