em·o·din /ˈɛmədən/
大黃素
em·o·din /ˈɛmədən/ 名詞
Em·o·din n. Chem. An orange-red crystalline substance, C15H10O5, obtained from the buckthorn, rhubarb, etc., and regarded as a derivative of anthraquinone; -- so called from a species of rhubarb (Rheum emodei).
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