Model Number: Quercetin 95%HPLC 98%UV74

[name]: quercetin.

[chemical name]:. 3,3',4',5,7-pentahydroxyflavone.

[cas#]:. 6151-25-3.

[m.f. & m.w.]:. C. 15. H. 10. O. 7. 路2h. 2. O 338.27.

[plant source]:. Sophora japonica.

[assay]:. 95%hplc 98%uv.

[characteristic]:. Dihydrate yellow needle crystal (dilute ethanol), in the 95 -97 become anhydrous made of ... , in the 314 (decomposition). 1g dissolved in 290ml of ethanol, 23ml boiling ethanol, very slightly soluble in water and ether, soluble in glacial acetic acid and alkaline aqueous solution.

[function]:. Quercetin, a common bioflavonol composed of two benzene rings linked with a heterocyclicpyrone ring (aromatic trimeric heterocyclic), is a water-soluble pigment synthesized or naturally occurring in the rind and bark of numerous plants. It, chemically 2-(3,4-dihydroxyphenyl)-3,5,7- trihydroxy- 4h-1-benzopyran-4-one, is a yellow to greenish crystalline powder melting at 302 c. Bioflavonoids are called phytochemicals, vitamin p, and vitamin c2. There are about 2000 known bioflavonoids including catechin, citrin, eriodictin, hesperetin, hesperidin, nobiletin, quercetin, rutin, sinensetin, and tangeretin. Vitamin p is not a dietary essential but is known to have the effect on capillary disorders. It increases the strength of the walls of the blood capillaries and regulates their permeability. It may have an contribution to the total antioxidant activity and detoxifiers. It may enhance the action of vitamin c. It is considered that it lowers down cholesterol levels if it taken with vitamin c. It is also know to have pharmacological action as an anti-inflammatory, antihistaminic and antiviral agent.