Question

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

• A. 4- Hydroxypentanoic acid
• B. 1- Carboxybutan - 3 - ol
• C. 1- Carboxybutan - 4 - ol
• D. 4 - Carboxybutan - 2 - ol

Answer 1

The correct option is A 4- Hydroxypentanoic acid

In the given compound, we have two funtional group i.e $-OH$ and $-COOH$.
While numbering the compound the $COOH$ should be included in the carbon chain.
By IUPAC rule, $-COOH$ is prior to $-OH$ group so the numbering should start from the $-COOH.$
Suffix : oic acid/carboxylic acid
The $-OH$ is in 4th position.
Thus, the IUPAC name of the given compound is
4-Hydroxy pentanoic acid.