China Factory Quercetin Sophora Japonica Extract Powder
8 Inquiries
117-39-5
Pharmaceutical Grade
99%
Shanghai, Beijing
ONERBIO
25KG/drum
2026-06-27
Nutrition supplement material,Pharmaceutical raw material,Chemical raw material
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Product Description
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Seller Information
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Inquiry History
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DescriptionBasic 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:
Distributor
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Main Products:
Nutrition supplement material,Pharmaceutical raw material,Chemical raw material
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Location:
Changqing 5th Road, Jianghan District
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Payment Terms:
TT against copy of documents
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Average lead Time:
5
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Total Annual Revenue:
$1 million-$2.5 million
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Total Employees:
5-10
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Year of Establishment:
2020
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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
