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Xi'an Rainbow Bio-Tech Co.,Ltd
Address: Room 604, Block B1, Jinye Shidai Building,No.32 Jinye Road., Xi’an 710065, China
Tel:0086-29-81119825
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Quercetin
Xi'an Rainbow Bio-Tech Co., Ltd

【NAME】:Quercetin
【SYNONYMS】:Sophoretin,Quertine
【SPEC.】:95%   98%
【TEST METHOD】: HPLC   UV
【PLANT SOURCE】:Sophora japonica Ait.
【CAS NO.】:6151-25-3
【MOLECULAR FORMULA & MOLECULAR Mass】:C15H10O7    302.23
【STRUCTURAL FORMULA】:                             
【CHARACTERISTIC】:Yellow powder, belongs to flavone,mp>300℃(lit), soluble in glacial aetic acid, in aq alkaline solns with yellow color. Partially insol in water
【PHARMACOLOGY】:Quercetin is a potent antioxidant and has anti-inflammatory activity, protecting cellular structures and blood vessels from the damaging effects of free radicals. It improves blood vessel strength. Quercetin inhibits the activity of catechol-O-methyltransferase that breaks down the neurotransmitter norepinephrine. This effect may lead to elevated levels of norepinephrine and an increase in energy expenditure and fat oxidation. It also means quercetin acts as an antihistamine leading to relief of allergies and asthma. As an antioxidant, it reduces LDL cholesterol and offers protection from heart disease. Quercetin blocks an enzyme that leads to accumulation of sorbitol, which has been linked to nerve, eye, and kidney damage in diabetics.
【CHEMICAL ANALYSIS 】
      

ITEMS

RESULTS

Melting point

305-315℃

Loss on Drying

More than 5.5%,Less than 9%

9.0%―12.0%

Sulphated ash

Less than 0.3%

≤0.3%

Heavy Metal

≤20PPM

Assay (by UV)

More than 98%

≥98%

Total plate count Yeast & mold E.coli Salmonella

<1000cfu/g

<100cfu/g

Negative

Negative

Melting point

305-315℃

【PACKAGE】:Packed in paper-drums and two plastic-bags inside.N.W.:25kgs .
【STORAGE】:Keep in cool, dry and dark place, avoid high temperature.
【SHELF LIFE】:24 months
Address: Room 604, Block B1, Jinye Shidai Building, No.32 Jinye Road., Xi’an 710065, China
Tel: 0086-29-81119825/81116639
Fax: 0086-29-81116693
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