Quercetin is a type of plant-based chemical, or phytochemical, known as a flavonoid (see also Phytochemicals). Good sources include apples, onions, teas, red wines, and many other foods. Quercetin is also available as a dietary supplement. Quercetin appears to have anti-inflammatory and antioxidant properties.
Certificate of Analysis
| Product name |
Quercetin |
Manufacture date |
Jan.04.2025 |
| Batch number |
SW250104 |
Analysis date |
Jan.05.2025 |
| Batch quantity |
150kg |
Expiry date |
Jan.04.2027 |
| Characteristic/method |
Specification |
Result |
| Aρpearance |
Yellow powder |
Conforms |
| Assay |
≥98%(UV) |
99.3% |
| ≥98%(HPLC) |
96.2% |
| Melting point |
305-315ºC |
310ºC |
| Solubility |
Practically insoluble in water; Soluble in aqueous alkaline sol |
Conforms |
| Loss on Drying |
≤10% |
9.3% |
| Sulphated Ash |
≤0.5% |
0.15% |
| Heavy metals |
≤10ppm |
Conforms |
| Cadmium |
≤1ppm |
Conforms |
| Lead |
≤3ppm |
Conforms |
| Mercury |
≤0.1ppm |
Conforms |
| Arsenic |
≤1ppm |
Conforms |
| Microbiological |
|
|
| Total plate Count |
≤1000cfu/g |
Conforms |
| Yeast&Mold |
≤100cfu/g |
Conforms |
| E.Coli |
Negative |
Negative |
| Pseudomonas aeruginosa |
Negative |
Negative |
| Conclusion |
Conforming to Enterprise Standard |
| Packing description: |
Sealed export grade drum & double of sealed plastic bag |
| Storage: |
Store in cool & dry place. keep away from strong light and heat |
| Shelf life: |
2 years when properly stored |
1. Quercetin may expel phlegm and arrest coughing, it can also be used as anti-asthmatic.
2. Quercetin may inhibit histamine release from basophils and mast cells.
3. Quercetin may control the spread of certain viruses within the body.
4. Quercetin may help reduce tissue destruction.
5. Quercetin may also be beneficial in the therapy of dysentery, gout, and psoriasis.
| Product Name |
CAS No. |
Product Name |
CAS No. |
| Curcumin |
458-37-7 |
Pterostilbene |
537-42-8 |
| 5-HTP |
56-69-9 |
Huperzine A |
102518-79-6 |
| Resveratrol |
501-36-0 |
Lion's Mane Extract |
486-66-8 |
| Rhodiola Rosea Extract |
10338-51-9 |
Ginseng Extract |
90045-38-8 |
| Urolithin A |
1143-70-0 |
NAD |
53-84-9 |
| NRC |
23111-00-4 |
NMN |
1094-61-7 |
1. Customs clearance
1) By Express:
Normally there is no specical need for the recipient to clear the customs. If the customs has an objection,our rich experienced and professional group will help you clear the customs.
2) By Air and by Sea:
Our company will cooperate with the recipient to provide relevant file and information in the customs clearance procedure.
2. Payment
T/T,Western Union,MoneyGram,Trade Assurance Order,L/C etc.
Audited Supplier 
){kind=link}