Write IUPAC name of the following compound

$3 - Hydroxy - 2 - methylpentanoic acid$
$4 - Methyl - 3 - hydroxypentanoic acid$
$3 - Hydroxy - 4 - methylpentanoic acid$
$2 - Methyl - 2 - hydroxypentanoic acid$

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Solution

The correct option is C
$3 - Hydroxy - 4 - methylpentanoic acid$

Determining the root word:
As there are five carbon atoms in the main chain, so the root word will be ‘pent’.
Determining the substituents:
There are two substituents in the 3^rd and 4^th position, “methyl" and ”hydroxy" respectively.
Determining the suffix,
As the functional group here is Carboxylic acid, so the suffix would be “oic acid”
The name for the compound would be $3 - Hydroxy - 4 - methylpentanoic acid$ .

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Similar questions

(i) Write the IUPAC name of the following compounds.
$C H_{3} - C H | C H_{3} - C H | O H - C H | C_{2} H_{5} - C H | O H - C H_{3}$

(ii) Write the IUPAC name of the following compound

I U P A C

C H_{2} = C {(C H_{2} C H_{2} C H_{3})}_{2}

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