Question:
The IUPAC name of the following compound is:
The IUPAC name of the following compound is:
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Always number from the end nearest to the highest-priority group (here, the –OH).
- Ensure correct locants for substituents and the double bond.
Updated On: Mar 6, 2026
- 6-ethyl-2-methyldec-4-en-7-ol
- 2-methyl-6-ethyldec-4-en-7-ol
- 5-ethyl-9-methyldec-6-en-4-ol
- 9-methyl-5-ethyldec-6-en-4-ol
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The Correct Option is C
Solution and Explanation
Step 1: Longest Chain and Main Functional Group
- The parent chain has 10 carbons (dec).
- There is an alcohol (–OH) group, which gets priority in numbering.
Step 2: Numbering and Locating the Double Bond
- The OH ends up at C-4.
- The double bond is at C-6 (hence “dec-6-en-4-ol”).
Step 3: Substituents
- There is an ethyl group at C-5 and a methyl group at C-9.
Putting it all together, the correct IUPAC name is 5-ethyl-9-methyldec-6-en-4-ol.
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