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Aspirin is an acetylation product of

1. o-Hydroxybenzoic acid
2. o-Dihydroxybenzene
3. m-Hydroxybenzoic acid
4. p-Dihydroxybenzene

Correct answer: o-Hydroxybenzoic acid

Solution

Aspirin is synthesized by the acetylation of o-hydroxybenzoic acid (salicylic acid) using acetic anhydride. This reaction introduces an acetyl group to the hydroxyl group of salicylic acid.

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