Hydroxybenzaldehydes

Isovanillin is a phenolic aldehyde, an organic compound and isomer of vanillin. It is a selective inhibitor of aldehyde oxidase. It is not a substrate of that enzyme, and is metabolized by aldehyde dehydrogenase into isovanillic acid, which could make it a candidate drug for use in alcohol aversion therapy. Isovanillin can be used as a precursor in the chemical total synthesis of morphine. The proposed metabolism of isovanillin (and vanillin) in rat has been described in literature, and is part of the WikiPathways machine readable pathway collection.

3-Hydroxybenzaldehyde is an organic compound with the formula . It is a colorless solid although most samples appear tan. Two other isomers of hydroxybenzaldehyde exist.

Hydroxybenzaldehydes are phenolic aldehydes. The term may refer to: