Trade Lead Description:
Herb Source Kaempferia galanga L.Diphylleia sinensis Li. Thesium chinense Turcz. Synonyms 3.5,7,4'-tetrahydroxyflavone Swartziol Trifolitin Nimbecetin Populnetin
Structural formula: Molecular Formula and Molecular Weight C15H10O6。 F.W. 286.24
Melting Point 276℃-278℃ Solubility Slightly soluble in water,Sol in hot alcohol,ether and alkalies
Structural Class:Flavonol Appearance: Yellow powder
Pharmacology kaempferol, Anti-inflammation, Anti-bacteria, Restrain cough Antioxidant,Anti-spasmodic or Spasmolytic,AntiulcerCholeretic,Diuretic,Relieve coughing
The vacuoles of lower epidermal strips from Vicia faba exhibit an intrinsic green fluorescence when incubated in alkaline buffers. Using an alkaline-induced absorbance change as a spectrophotometric assay, the major pigment responsible for this fluorescence was isolated and identified as the flavonoid: kaempferol 3-O-galactoside, 7-O-rhamnoside. The aqueous absorption maxima were 394 and 341 nanometers at pH 10.0 and 6.0, respectively, with a pKa of 8.3 and the fluorescence emission maximum was 494 nanometers at pH 10.0. Posted from China - Jiangsu on 16 April, 2007
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