Quercetin Seller, Supplier, Exporter, Manufacturer, Factory

Quercetin
Zhejiang Cathaya Light Products and Textiles Imp &Exp Co Ltd
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Quercetin

Product Name: Quercetin
Synonyms: Meletin, Sophretin, Cyanidenolon, Permeability Factor, Permeability Vitamin,
vitamin P.
Chemical Name: 4H-1-Benzopyran-4-one, 2-(3,4-dihydroxyphenyl) -3,5,7-trihydroxy-
Molecular Formula: C15H10O7
Molecular Weight: 302.23
Chemical Structure:

Physical Property: Yellow needle like crystal (dihydrate in dilute ethanol) , dehydrate at 95-97, Melting Point: 314C (dissociate) . Solubility: 1g in 290ml anhydrous ethanol, or 23ml of glacial acetic acid, yellow alkaline solution, almost insoluble in water, very bitter taste in ethanol.

Descriptions: It is a type of flavonoid which are water-soluble antioxidants which consist of a group of natural pigments. It is extracted from skin and leaves of Quercus iberica, full plant of Dysosma veitchii (Hemsl. et Vils. ) Fu and Hypericum ascyron L. , leaves of Apocynum lancifolium Rus. .

Technical Data:
Appearance: Yellow Powder
Melting Point: 305-315C
Identification: Positive
Related substance: Passes
Reducing sugars: Not detected
Sulfate, ppm: 1000 max.
Chloride, ppm: 1000 max.
Heavy metals, ppm: 20 max.
Ash, %: 0.2 max.
Loss on drying, %: 9.5-12.5
Assay, %: 99.0 min.
Microbial
Total plate count, pc/g: 1000 max.
Yeast & Mold, pc/g: 100 max.
E. Coli: Negative
Salmonella: Negative
Staphylococci: Negative

Mechanism:
Quercetin is naturally occurring substances thought to maintain normal conditions in the walls of the small blood vessels. They are absorbed into the bloodstream in the upper part of the small intestine. Excessive amounts are excreted in the urine. Bioflavonoids act synergistically with vitamin C to preserve and protect capillaries, promote circulation and lower cholesterol levels. Acts as an antioxidant and helps prevent Vitamin C and adrenaline from being oxidized by copper-containing enzymes.

Functions and Applications:
Fairly good expectorant and antitussive, some antiasthmatic effect, lowering of blood pressure, reducing the brittalness of capillary vessel, lowering blood lipid, dilation of coronary artery, increasing the flow in coronary artery. It is mainly treated with chronical bronchitis, coronary heart diseases and hypertension. Others as follows:
1. Reduce cancer risk
2. Reduce heart attack
3. Stave off cataracts
4. Control asthma
5. Maintain health when suffering from Crohn’s disease
6. Prevent recurrent gout attacks
7. Speed up healing of recurrent hearthburn, or gastroesophageal reflux disorder (GERD)

Toxicity: LD50 (Oral, mice) : 160mg/kg

Packing: 25kg cardboard drum

Storage: Store in cool and dry place


Pyromellitic Dianhydride	Aromatic amine curing agent	Butyl Glycidyl Ether

Diamino Diphenyl Methane	Propylene Glycol Monomethyl Ether	N-Methylpyrrolidone

N-Ethylpyrrolidone	Glyoxalic Acid	Glyoxal

Ethylene Glycol Monoethyl Ether	Ethyl Diglycol Acetate	Butyl Glycol Acetate

Category :	Other Chemicals
Country Of Origin :	China
Listing Type :	Sell
Contact :	Bright Du
Address :	117 Ti Yu Chang Road Hangzhou, Zhejiang, 310004 China
Telephone :	[86] (571) 85098231
Fax :	[86] (571) 85098233