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Question

IUPAC name of the compound CH3−CH(CH2CH3)−CH2−CH(OH)−CH3 is:

A
4-Ethyl-2-pentanol
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B
4-Methyl-2-hexanol
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C
2-Ethyl-2-pentanol
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D
3-Ethyl-2-hexanol
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Solution

The correct option is B 4-Methyl-2-hexanol
Longest carbon chain has 6 atoms. We number from right hand side as alcohol group at C-2 gets least number in this case and suffix used for alcohol is "-ol". Methyl group is present at C-4 position.
Thus, IUPAC name is 4-Methyl-2-hexanol.

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