Natural Sophora Japonica Extract 98% quercetin powder CAS NO. 117-39-5 Staherb Factory
TDS 8 Inquiries
117-39-5
Food grade
98%
Shanghai
Staherb
1kg/aluminium foil bag; 25kg/Cardboard Drum
2024-06-02
plant extract,Fruit powder,herb extract,Carnosic acid,Chamomile P.E.,1-Deoxynojirimycin
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Product Description
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Seller Information
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Inquiry History
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DescriptionCertificatesBasic Info
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Product Name:
Quercetin
Other Name:4H-1-Benzopyran-4-one,2-(3,4-dihydroxyphenyl)-3,5,7-trihydroxy-;Flavone,3,3′,4′,5,7-pentahydroxy-;Flavone,3,4′,5,5′,7-pentahydroxy-;2-(3,4-Dihydroxyphenyl)-3,5,7-trihydroxy-4H-1-benzopyran-4-one;C.I. 75670;Meletin;3,5,7,3′,4′-Pentahydroxyflavone;Quercetin;Quercetine;Quercetol;Quertine;Sophoretin;Xanthaurine;3,3′,4′,5,7-Pentahydroxyflavone;Cyanidelonon 1522;Quertin;NSC 57655;NSC 9219;2-(3,4-Dihydroxyphenyl)-3,5,7-trihydroxy-4H-benzopyran-4-one;Corvitin;Korvitin;3′-Hydroxykaempferol;LDN 0052529;Lipoflavon;3,5,7-Trihydroxy-2-(3,4-dihydroxyphenyl)-4H-chromen-4-one;2-(3,4-Dihydroxyphenyl)-3,5,7-trihydroxychromen-4-one;2-(3,4-Dihydroxyphenyl)-3,5,7-trihydroxy-4H-chromen-4-one;73123-10-1;74893-81-5
CAS No.:117-39-5
Molecular Formula:C15H10O7
InChIKeys:InChIKey=REFJWTPEDVJJIY-UHFFFAOYSA-N
Molecular Weight:302.24
Exact Mass:302.24
EC Number:204-187-1
UNII:9IKM0I5T1E
NSC Number:9219
UN Number:2811
DSSTox ID:DTXSID4021218
NCI Thesaurus Code:C792
Color/Form:Yellow needles (dilute alcohol, +2 water)
HScode:29329990
Categories:
Characteristics-
PSA:
127
XLogP3:1.5
Appearance:Quercetin appears as yellow needles or yellow powder. Converts to anhydrous form at 203-207°F. Alcoholic solutions taste very bitter. (NTP, 1992)
Density:1.3616 (rough estimate)
Melting Point:316.5 °C
Boiling Point:Sublimes
Flash Point:248.1±25.0 °C
Refractive Index:1.4790 (estimate)
Water Solubility:H2O: <0.1 g/100 mL at 21 ºC
Storage Conditions:Store at 0-5°C
Vapor Pressure:2.81X10-14 mm Hg at 25 deg C (est)
Toxicity:LD50 oral in rat: 161mg/kg
Henrys Law Constant:Henry's Law constant = 6.60X10-21 atm-cu m/mol at 25 °C (est)
Dissociation Constants:pKa1 = 7.17 (phenol); pKa2 = 8.26 (phenol); pKa3 = 10.13 (phenol); pKa4 = 12.30 (phenol); pKa5 = 13.11 (phenol) (est)
Collision Cross Section:166.7 Ų [M+H]+ [CCS Type: DT, Method: single field calibrated with Agilent tune mix (Agilent)]|158.98 Ų [M-H]- [CCS Type: DT, Method: single field calibrated with Agilent tune mix (Agilent)]|163.4 Ų [M+H]+ [CCS Type: TW, Method: calibrated with polyalanine and drug standards]
Experimental Properties:Yellow needles from dil alcohol. Becomes anhydrous at 95-97 °C. When anhydrous, decomposes at 314 °C; uv max (alcohol) 258, 375 nm (log epsilon 2.75, 2.75). One gram dissolves in 290 mL absolute alcohol, in 25 mL boiling alcohol. Soluble in glacial acetic acid; in aqueous alkaline solutions with yellow color. Practically insoluble in water. Alcoholic solutions taste very bitter. /Dihydrate/|Crystals; mp 123-125 °C; UV max (chloroform): 249, 343 nm (log epsilon 4.43, 4.14) /Pentabenzyl ether/|Hydroxyl radical reaction rate constant = 2.39X10-10 cu cm/molec-sec at 25 °C (est)|Ozone reaction rate constant = 1.05X10-16 cu cm/molec-sec at 25 °C (est)
Air and Water Reactions:Sensitive to exposure to air and light. Insoluble in water.
Reactive Group:Ketones
Reactivity Profile:QUERCETIN is a strong antioxidant and a metal chelator. Promotes the formation of nitrosamines (NTP, 1992).
Hazard IdentificationClassification of the substance or mixture
Acute toxicity - Category 3, Oral
GHS label elements, including precautionary statements
Pictogram(s) 
Signal word Danger
Hazard statement(s) H301 Toxic if swallowed
Precautionary statement(s) Prevention P264 Wash ... thoroughly after handling.
P270 Do not eat, drink or smoke when using this product.
Response P301+P316 IF SWALLOWED: Get emergency medical help immediately.
P321 Specific treatment (see ... on this label).
P330 Rinse mouth.
Storage P405 Store locked up.
Disposal P501 Dispose of contents/container to an appropriate treatment and disposal facility in accordance with applicable laws and regulations, and product characteristics at time of disposal.
Other hazards which do not result in classification
no data available
Handling and StoragePrecautions for safe handling
Handling in a well ventilated place. Wear suitable protective clothing. Avoid contact with skin and eyes. Avoid formation of dust and aerosols. Use non-sparking tools. Prevent fire caused by electrostatic discharge steam.
Conditions for safe storage, including any incompatibilities
Quercetin tablets and capsules should be stored at room temp, away from heat, moisture, and direct light.
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Seller Information
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Business Type:
Manufactory
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Main Products:
plant extract,Fruit powder,herb extract,Carnosic acid,Chamomile P.E.,1-Deoxynojirimycin
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Location:
No.186,Lugu Valley Garden Road, High-tech Development Zone, Changsha , Hunan, P.R. China
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Payment Terms:
TT against copy of documents,L/C
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Average lead Time:
120
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Total Annual Revenue:
$2.5 million-$5 million
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Total Employees:
11-50
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Year of Establishment:
2010
Changsha Staherb Natural Ingredients Co., Ltd., a good supplier of professional herb extracts, especially those with high purity and standardized production process. Our company devotes to supply high quality products and services to customers in R&D and production fields of health products, cosmetics, feed additives and biopesticides.
With cordial and professional R&D, sales and after-sales service groups, Staherb has potent capabilities both in R&D and production. The company persists in high investment on R&D of active ingredients of plants and promotes innovation on demands of customers. Upon constant R&D and tracing of new technologies and new products, Staherb makes effective cooperation with famous research institutes, such as CAS Kunming Institute of Botany, State Key Lab of Hunan Forest Products and Chemical Engineering, Hunan Agricultural University and so on.
Now the main products of Staherb are standardized high purity plant extracts, including Epimedium (10-98%), Euccomia Bark Extract (5-95%), Amygdalin (50-98%), Ursolic acid (25-98%) and Corosolic acid (1-98%). In order to meet customers’ research needs, our company also provides over 600 plant extracts, most of which are high-purity monomer plant compounds and reference substance. And some products can be supplied with milligram-scale, kilogram-scale or even to ton-scale. In addition, based upon the powerful R&D capability, Staherb can provide both products customization services and R&D outsourcing services according to customers’ specific requirements, so that to meet their continual innovation needs in the fields of natural products’ discovery and production.
Staherb endeavors to accelerate the response rate of supply chain as well as improve the service superiority upon customers’ continual innovation needs. It also devotions to establish good partnerships with customers and to construct a safe development model which is forward-looking, reciprocal and coexisting, thus to create long-term value for customers through division and cooperation as well as complementation. -
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Inquiry History8 Inquiries
Country Product Purchase Quantity Date Posted 
South Africa
Quercetin
5 KG Nov 26, 2023 
Saudi Arabia
95% HPLC Quercetin
10 KG Dec 26, 2023 
Pakistan
Quercetin
2 KG Nov 3, 2023 
Argentina
Quercetin
5 KG Jan 7, 2026 
United States
Meletin
1 KG Jul 4, 2025 
Kenya
quercetin
1 KG Apr 14, 2024 
Taiwan, China
Quercetin
50 KG Feb 1, 2024
South Africa
Quercetin
1 MT Jan 26, 2024 Post an enquiry for this product
