Question

IUPAC name of $C{H}_{3}CH\left(OH\right)C{H}_{2}C{H}_{2}COOH$

• A. 4-Hydroxypentanoic acid
• B. 1-Carboxy-3-butanoic acid
• C. 1-Carboxy-4-butanol
• D. 4-Carboxy-2-butanol

Answer 1

The correct option is A 4-Hydroxypentanoic acid

Carboxylic functional group is prior to hydroxyl group. Hence, the numbering of carbon chain will start from the carbon of carboxylic acid. Here, $-OH$ group is attached to the fourth carbon.
Therefore, the IUPAC name of given compound is 4-Hydroxypentanoic acid.