thionine
硫堇; 勞思氏紫
thi·o·nine /ˈθaɪəˌnɪn, nən/ 名詞
Thi·on·ine n. Chem. An artificial red or violet dyestuff consisting of a complex sulphur derivative of certain aromatic diamines, and obtained as a dark crystalline powder; -- called also phenylene violet.
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