CAS NO.:117-39-5,6151-25-3
EINECS NO.: 204-187-1
BEILSTEIN NO.: 317313
MDL NO.: MFCD00149487 
RTECS: LK8750000
Other Name: Meletin, Sophretin.
Molecular Formula: C15H10O7 
Molecular Weight: 302.23
Stability: Stable under normal temperatures and pressures.
Apperance: Yellow powder
Plant Source: Sophora japonica.L
specifications:
1. Quercetin dihydrate  
---purity: +95%,98% by HPLC 
---purity: +99% by UV 
2. Granulated Quercetin Dihydrate
---purity: +95%,98% by HPLC 
---purity: +99% by UV 
3. Quercetin Anhydrous 
---purity: +95%,98% by HPLC 
---purity: +99% by UV 
4. Quercetin Soluble
---purity: +95% by UV
5. Dihydroquercetin 
---purity: +90%,95% by HPLC 
Package: 1kg, 5kg, 25kg.
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Functions:
Quercetin is a powerful antioxidant
fairly good expectornt and antitussive,
antiinflammatory,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.
For the treatment of chronical bronchitis,accessory treatment of 
coronary heart diseases and hypertension.