An aromatic amine compound formed by acetylating phenetidine; also known as paracetamol or acetaminophen when in its N-acetyl form.
From 'acet-' (acetyl group) + 'phenetidin' (from 'phenethyl', from phenyl + ethyl, from 'phene-', benzene + 'ethyl'). This term exemplifies how systematic nomenclature builds complexity from simpler parts.
Acetphenetidin was discovered in 1877 and became one of the first mass-produced pain relievers—it's now sold as Tylenol, and billions of doses have made billions of people feel better, all from acetylating a simple aniline compound.
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