naturally produced organic alcohols. One of several chemical defense compounds in trees.

phenols (Wikipedia)

In organic chemistry, phenols, sometimes called phenolics, are a class of chemical compounds consisting of a hydroxyl group (—OH) bonded directly to an aromatic hydrocarbon group. The simplest of the class is phenol, C
. Phenolic compounds are classified as simple phenols or polyphenols based on the number of phenol units in the molecule.

Phenol – the simplest of the phenols.
Chemical structure of salicylic acid, the active metabolite of aspirin.

Phenols are synthesized industrially as well as naturally.

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