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noun fraxin n. (Chem.) A colorless crystalline substance (C16H18O10) found in the bark of the ash (Fraxinus), and along with esculin in the bark of the horse-chestnut. It is structurally a derivative of a coumarin glucoside. It shows a delicate blue-green fluorescence in alkaline solutions; called also paviin and fraxoside. br/ Synonyms: 8-(beta-D-Glucopyranosyloxy)-7-hydroxy-6-methoxy-2H-1-benzopyran-2-one; also, 7,8-dihydroxy-6-methoxy-coumarin-8-beta-D-glucoside; fraxetin-8-glucoside.
Collaborative International Dictionary of English 0.48
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