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Created for organic chemistry nomenclature, 醌 consists of the left-side radical 酉 and the right-side phonetic component 昆 (kūn). Originally associated with wine, 酉 is now widely used in chemical characters to indicate oxygen-containing organic compounds or other complex chemical substances. The phonetic 昆 gives the pronunciation kūn, forming a transliteration of the term "quinone", a class of compounds characterized by a fully conjugated cyclic dione structure. In this way, 醌 illustrates a systematic adaptation: traditional semantic radicals are repurposed to classify modern substances, while phonetic components bridge Chinese characters with international scientific vocabulary.
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