Other Name: Meletin, Sophretin    
Plant Source: Sophora japonica.L.      
Molecular Formula: C15H10O7    
Appearance:Yellow powder        
Odor:Characteristic   
Package:25kgs/Drum 
Spec.:   
1 Quercetin dihydrate
2 Granulated Quercetin Dihydrate
3 Quercetin Anhydrous
4 Quercetin Soluble
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Function:  
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.   
For the treatment of chronical bronchitis,
accessory treatment of coronary heart diseases and hypertension.