English name: Flos sophorae immaturus, Japanese pagodatree flower-bud Synonym: Meletin, Sophoretin Origin: the flower bud of sophora japonica L Plant morphology: deciduous tree with height of about 15-25meters Collecting and processing: collect the flower bud in summer, drying timely, removing the branches, stems and impurities Appearance: the shape of flower bud is oval, with length of 2-6mm, diameter of about 2mm Odorless, slightly bitter taste Chemical composition: contains rutin, saponin and sterol Property and Flavor: slightly cold in nature, bitter taste Indications: cooling blood and hemostasis, purging liver fire, for the treatment of hemafecia, hemorrhoidal bleeding, blood dysentery, uterine bleeding, hematemesis, epistaxis, conjunctival hyperemia caused by hepatopyretic disease, headache and dizziness Dosage: 4 5-9g
Product name: Quercetin
Synonym: Meletin, Sophoretin.
Chem. Name: 4H-1-Benzopyran-4-one,2-(3,4-dihydroxyphenyl)-3,5,7-trihydroxy-Flavone
CAS NO.: 117-39-5
M.F. & M.W.: C15H10O7, 302.23
Physical Property: yellow- needle- crystal (dihydrate in dilute ethanol); dehydrate at 95-97℃; M.P.: 314℃(dissociate); solubility: 1g in 290ml anhydrous ethanol, or 23ml of boiling ethanol, soluble in glacial acetic acid; yellow look in alkaline water solution; practically insoluble in water; very bitter taste in ethanol; UV(EtOH, max) nm(log): 258(2.75), 375(2.75) ; 13CNMR(DMSO-d6): 146.9(C2), 135.8(C3), 175.9(C4), 156.2(C5), 98.3(C6), 164.0(C7), 93.5(C8), 160.8(C9), 103.1(C10)
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