What is the IUPAC name of the compound shown?

Question

Quizplus · Accepted Answer

The compound has a chain of six carbons (hexanoic acid) with an ethyl group (two carbons) attached to the second carbon. Thus, the correct IUPAC name is 2-ethylpentanoic acid (option C). Option A (3-hexanoic acid) does not take into account the ethyl group, option B (2-ethyl pentanoate) is incorrect as it indicates a ester instead of an acid, option D (3-heptanoic acid) has one extra carbon, and option E (4-heptanoic acid) has a different position for the ethyl group.

What Is the IUPAC Name of the Compound Shown