[ Botanical Name ] Sophora flavescens Ait.
[ CAS No. ]  117-39-5
[ Molecular Formula ]   C15H10O7
[ Formula Weight ]  302.24
[ Specification ] ≥95.0%(HPLC) Quercetin
[ Detection method ]   HPLC
[ Appearance ] Yellow crystalline powder
Uses of Quercetin
1. Used as a kind of antioxidant which is mainly used for oil, drinks, cold drinks, meat processing products.
2. Has good effects of expectorant, anti-cough, anti-asthma and can be used for treating chronic bronchitis as well as for adjuvant therapy of coronary heart disease and high blood pressure. 
3. Used as analytical standards
COA of Quercetin
Assay:  95.45 %
Melting point: 312℃
Mesh Size:  100% pass 80mesh
Loss on drying:  9.99%
Ash:  0.15%
Sulphated ash:  0.12%
Chloride:   ≤1000ppm
Heavy metals:  ≤10ppm
Pb:   0.05ppm
As:   ≤0.5ppm
Total plate count(irradiation):   ≤1000cfu/G
Yeast &Nikd:  ≤100cfu/G
E•coli:  Negative
Salmomella:  Negative
About Quercetin
Quercetin is a phytochemical that is part of the coloring found in the skins of apples and red onions. It has been isolated and is sold as a dietary supplement.
Quercetin is a powerful antioxidant. It is also a natural anti-histamine, and anti-inflammatory. Research shows that quercetin may help to prevent cancer, especially prostate cancer.
Quercetin's anti-histamine action may help to relieve allergic symptoms and asthma symptoms. The anti-inflammatory properties may help to reduce pain from disorders such as arthritis. Men who are concerned about prostate problems would also benefit from quercetin. Quercetin may also help reduce symptoms like fatigue, depression and anxiety.
[ Storage ]
Store in sealed containers at cool & dry place.
Protect from light, moisture and pest infestation.
[ Shelf life ]
24 months when properly stored
[ Package ]
Enterprise standard. Drums or cartons, 25kgs/drum(carton),2.5kg/bag, double vacuum plastic packing (vacuum sealed foil bags) inside.



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