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fraxetin
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fraxetin
fraxetin Chem. (ˈfræksɪtɪn) A substance obtained along with glucose by digesting fraxin with dilute sulphuric acid.1864 in Watts Dict. Chem. 1889 Watts' Dict. Chem., Fraxetin C10 H8 O5..occurring in horse-chestnut bark.
Oxford English Dictionary
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Fraxetin
Fraxetin is an O-methylated coumarin. It can be found in Fraxinus rhynchophylla and seeds of Datura stramonium. Fraxin is a glucoside of fraxetin.
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Fraxin
Fraxin is a glucoside of fraxetin. Fraxin extracted from ash bark exhibits florescence in aqueous solution.
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-etin
-etin, suffix Chem. Forming the names of aglycones, esp. those not chemically characterized when discovered and named, usually by replacing -in in the name of the glycoside from which the aglycone is obtained; so fraxetin, phloretin, quercetin.
Oxford English Dictionary
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Glucoside
Fraxin, occurring in Fraxinus excelsior, and with aesculin, hydrolyses to glucose and fraxetin ( also known as 7,8-dihydroxy-6-methoxycoumarin)
Flavone
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秦皮素 - A+醫學百科
秦皮素. 別名:秦皮亭;白蠟樹內酯; 英文名:fraxetin;fraxetol. 屬香豆素類化合物。 為片狀結晶(乙醇),熔點228℃,在150℃變為黃色,熔點時變為棕色,為秦皮苷水解產物,溶於乙醇及鹽酸水溶液,微溶於沸水,難溶於乙醚。 來源於水犀科植物小葉白蠟樹(Fraxinus brngeana DC.)的樹皮,喜馬白蠟樹(F ...
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List of EC numbers (EC 1)
monooxygenase
: zealexin A1 synthase
: nepetalactol monooxygenase
: flavanone 2-hydroxylase
: (S)-1-hydroxy-N-methylcanadine 13-hydroxylase
: fraxetin
wikipedia.org
en.wikipedia.org
PDF No - tomiyaku.or.jp
シンピ(秦皮) 春から夏に樹皮を剥ぎ、陽乾する。 クマリン類:aesculin,aesculetin,fraxin,fraxetin, fraxinol、フェノール誘導体:syringin、糖類: mannitol、tannin等。 消炎、収斂薬として下痢や解熱に。尿酸排泄作用が あり痛風に。結膜炎などに煎液で洗眼する。
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