A variant spelling of alkapton; the oxidized form of homogentisic acid that produces dark pigmentation in alkaptonuria.
Variant of alkapton with the suffix -one (common in chemistry for ketones). Both forms emerged in 19th-century chemical literature to describe the same dark compound.
The spelling alkaptone versus alkapton shows how young biochemistry was as a field—scientists hadn't standardized nomenclature yet, so the same molecule got multiple names, creating confusion that took decades to sort out.
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