Which of the following is the correct IUPAC name for CH₃CH₂CH(CH₃)CH₂OH?
A2-methylbutan-1-ol
B3-methylbutan-1-olCORRECT
C2-methylbutan-4-ol
D3-methylbutan-4-ol
GCEChemistryOrganic Chemistry2019
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Why the answer is B, and why the others tempt you.
The longest carbon chain containing the OH group has 4 carbons (butan-1-ol). The methyl branch is on carbon 3 when numbered from the end closest to the OH group, giving 3-methylbutan-1-ol. Option A incorrectly places the methyl on C2.
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