Our firm has been concentrating on brand strategy. Customers’ pleasure is our best advertising. We also supply OEM company for High Quality Rutin 95% 98% Sophora Japonica Extract DAB USP Ep CAS 153-18-4, We just not only deliver the high quality to our shoppers, but a lot more even important is our greatest provider along with the aggressive selling price.
Our firm has been concentrating on brand strategy. Customers’ pleasure is our best advertising. We also supply OEM company for China Organic Intermediate and Rutin, We can meet the various needs of customers at home and abroad. We welcome new and old customers to come to consult & negotiate with us. Your satisfaction is our motivation! Let us work together to write a brilliant new chapter!
Quercetin- (Sophora japonica extract) -was a hydrolysis product from Rutin which extracted from dried flower buds of Sophora japonica L, by alkali extraction, acid precipitation and purification process, it NLT 98.0% and NMT 102.0% of quercetin, calculated on the anhydrous basis.
① Quercetin Powder 95% HPLC
② Quercetin Powder 98% UV
③ Quercetin Granule 95% HPLC
③ Quercetin dihydrate 95% HPLC
❶ Quercetin is a kind of natural vitamin P, which has the ability to reduce capillary permeability and antioxidant.
❷ Quercetin is an anti-inflammatory & antiviral agent, has strong inhibit ability on Staphylococcus aureus, E.coli.
❸ Quercetin has strong antitumor activity, which can reduce the proliferation activity of tumor cells.
❹ Quercetin has effects on the central nervous system, analgesia, anti-depression and improve memory.
Analysis Items | Specifications | Methods |
Identifications | ||
A. IR | IR spectrum is concordant with spectrum of Quercetin RS <197K>. | |
B. UV | The absorptivity at the maximum at 371nm is 75.5–80.0 <197U>. | |
C. HPLC | Retention time of the sample matches with the standard in HPLC purity test. | |
Active Ingredients Tests | ||
Quercetin dihydrate (HPLC) | ≥95.00 % | USP43<621> |
Kaempferol | ≤0.50% | USP43<621> |
Individual impurities | ≤0.10% | USP43<621> |
Total Impurities | ≤2.00% | USP43<621> |
Physical Tests | ||
Appearance | Yellow crystalline powder | Visual |
Particle size | 98% pass 80 mesh | Ch.P 2020 IV<0982> |
Water | ≤12.00% | USP43<921> |
Residue on Ignition | ≤0.10% | USP43<281> |
Chemical Tests | ||
Heavy Metals | ≤10.00ppm | USP43<231> |
Pb<Lead> | ≤3.00ppm | USP43<211> |
As<Inorganic arsenic> | ≤1.00ppm | USP43<251> |
Cd<Cadmium> | ≤1.00ppm | USP43<232> |
Hg<Total mercury> | ≤0.10ppm | USP43<261> |
Sulphate | ≤1,000ppm | Ch.P 2020 IV<0802> |
Microbiological Tests | ||
Total Bacterial Counts | ≤1,000cfu/g | USP43<2021> |
Yeasts and Molds | ≤100cfu/g | USP43<2021> |
E. Coli | Negative in 1g | USP43<2022> |
Salmonella | Negative in 10g | USP43<2022> |
* Statements: Allergen Free,Irradiated free, GMO free, Additives free. |
★ Customized specification,granulation, capsulation service is acceptable.
★ Standardized products, reasonable price, professional service is continuously provided.Our firm has been concentrating on brand strategy. Customers’ pleasure is our best advertising. We also supply OEM company for High Quality Rutin 95% 98% Sophora Japonica Extract DAB USP Ep CAS 153-18-4, We just not only deliver the high quality to our shoppers, but a lot more even important is our greatest provider along with the aggressive selling price.
High Quality China Organic Intermediate and Rutin, We can meet the various needs of customers at home and abroad. We welcome new and old customers to come to consult & negotiate with us. Your satisfaction is our motivation! Let us work together to write a brilliant new chapter!