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Dayang Chem (Hangzhou) Co.,Ltd.

Dayangchem's R&D center can offer custom synthesis according to the contract research and development services for the fine chemicals, pharmaceutical, biotechnique and some of the other chemicals. DayangChem can provide different quantities

Quercetin suppliers in China

Cas:117-39-5

Min.Order:1 Kilogram

FOB Price: $3.0

Type:Lab/Research institutions

inquiry

Hangzhou Dingyan Chem Co., Ltd

Big ordering quality guaranteed Quercetin 117-39-5 manufactory Company Info Hangzhou Dingyan Chem Co., LTD. is located in the beautiful tourist city of hangzhou, is a comprehensive chemical enterprice which doing import and export busin

Big ordering quality guaranteed Quercetin 117-39-5 manufactory

Cas:117-39-5

Min.Order:1 Gram

Negotiable

Type:Manufacturers

inquiry

DB BIOTECH CO., LTD

Product Name:Quercetin Specification: 98% HPLC Appearance: Yellow Green powder Quercetin is a flavonol compound with a variety of biological activities. Delivery Time: Around 1-3 workdays after your payment. Package:

Quercetin Dihydrate CAS 117-39-5 Quercetin Anhydrous Sophora Japonica Extract in bulk supply

Cas:117-39-5

Min.Order:1 Kilogram

FOB Price: $130.0

Type:Trading Company

inquiry

Kono Chem Co.,Ltd

About us We are a Professionally Managed Biotech Company exclusively into the manufacturing, Marketing and Exporting of Plant Extracts and Health Care Products.There are 15 experts in our research team. We insist in innovation and pr

Quercetin

Cas:117-39-5

Min.Order:1 Kilogram

FOB Price: $800.0 / 1000.0

Type:Other

inquiry

Binbo Biological Co., Ltd

1.high purity 2.consistent quality 3.competitive price 4.fast shipping Binbo Biological Products Co. Ltd., is a professional high-tech enterprise which engaged in Biological products and raw materials. Binbo is engaged in R&D with perfect eq

Natural Quercetin

Cas:117-39-5

Min.Order:1 Kilogram

FOB Price: $10.0 / 100.0

Type:Lab/Research institutions

inquiry

Xi'an Xszo Chem Co., Ltd.

1. Factory price and high quality must be guaranteed, base on 8 years of production and R&D experience2. Free samples will be provided,ensure specifications and quality are right for customer3. Customers will receive the most professional technical s

High Quality 99% Quercetin 117-39-5 GMP manufacturer

Cas:117-39-5

Min.Order:1 Gram

FOB Price: $0.1

Type:Manufacturers

inquiry

Cartoon Ingredients Co., Ltd

Cartoon Ingredients Co.,Ltd.is located in NanJing, the capital of Jiangsu Province.with Convenient traffic As a manufacturer, the company mainly engaged in providing Food ingredients, Herbal extracts, Vitamins, APIs and Fine chemicals &a

Quercetin

Cas:117-39-5

Min.Order:0

Negotiable

Type:Trading Company

inquiry

Greenutra Resource Inc

Product name: Onion Extract Latin name: Allium cepa L. Specification:Ratio Extract 10:1 20:1 and more, 1%~20% Quercetin Appearance: Yellow brown powder Grade: Pharmaceutical and food Extraction type: Solvent extraction

onion extract

Cas:117-39-5

Min.Order:1 Kilogram

FOB Price: $10.0

Type:Trading Company

inquiry

Simagchem Corporation

Welcome to Simagchem, your partner in China as a premier supply of bulk specialty chemicals for industry and life science. We introduce experienced quality product and exceptional JIT service with instant market intelligence in China to benefit our

High quality Quercetin supplier in China

Cas:117-39-5

Min.Order:0 Metric Ton

Negotiable

Type:Manufacturers

inquiry

Hebei yanxi chemical co.,LTD.

hebei yanxi chemical co., LTD who registered capital of 10 million yuan, nearly to $2 million, we have a pharmaceutical raw materials factory production of pharmaceutical raw materials, and a reagent r&d center, and we do research and developm

Quercetin suppliers in China CAS NO.117-39-5

Cas:117-39-5

Min.Order:1 Metric Ton

FOB Price: $1.0 / 3.0

Type:Manufacturers

inquiry

Xi'an Quanao Biotech Co., Ltd.

We are: Focus on the research, production and sale of Plant and Animal extract, Medical intermediate, complete coverage six industries. Product grade: Medicine, Health care product, Cosmetics, Food,Feed, Biopesticide. Hot selling market: Europe,

High Quality Sophora Japonica Extract Quercetin 98% Powder UV

Cas:117-39-5

Min.Order:1 Kilogram

FOB Price: $59.0 / 65.0

Type:Manufacturers

inquiry

Ality Chemical Corporation

The above product is Ality Chemical's strong item with best price, good quality and fast supply. Ality Chemical has been focusing on the research and production of this field for over 14 years. At the same time, we are always committed to providi

Factory Supply Quercetin

Cas:117-39-5

Min.Order:1

Negotiable

Type:Other

inquiry

Xian Changyue Biological Technology Co., Ltd.

Our Advantages: 1. Free samples and unconditional hypothetical responses. 2.100% natural product, without any synthetic ingredients. 3. Direct sales from manufacturers, providing OEM and R&D services. 4. Complete certificates. 5. China's lead

Quercetin

Cas:117-39-5

Min.Order:25 Kilogram

Negotiable

Type:Manufacturers

inquiry

Shanghai Seasonsgreen Chemical Co.,Ltd

Shanghai Seasonsgreen Chemical is a high-tech research and development, production, sale and custom synthesis set in one high-tech chemical products enterprises. Our sales and marketing division is located in Shanghai, serving international pharmaceu

lower price High quality Quercetin

Cas:117-39-5

Min.Order:1 Kilogram

FOB Price: $1.0

Type:Manufacturers

inquiry

Shanxi Zorui Biotechnology Co.Ltd.

Zorui combines R&D, production and sales into its operations, While continuously providing high-quality raw materials, we also provide and optimize technical solutions for customers to achieve mutual benefit. We adhere to the "quality, integ

Hubei DiBo chemical co., LTD

Name:Quercetin Name:Quercetin CAS no:117-39-5 Grade:Medical chemical industry, food industry, skin care Molecular formula: C15H10O7 Molecular weight: 302 Product Quality 12 years of chemical raw materials Mature operation of the indu

Quercetin/cas:117-39-5 /Quercetin material/high-quality

Cas:117-39-5

Min.Order:25 Kilogram

FOB Price: $1.0 / 2.0

Type:Other

inquiry

Henan Tianfu Chemical Co., Ltd.

Product Name: Quercetin Synonyms: 3,3',4',5,7-Pentahydroxyflavone 2-(3,4-Dihydroxyphenyl)-3,5,7-trihydroxy-4H-chromen-4-one;2-(3,4-DIHYDROXYPHENYL)-3,5,7-TRIHYDROXY-4H-1-BENZOPYRAN-4-ONE;3,3',4',5,6-PENTA-HYDROXY-FLAVON

117-39-5 Quercetin

Cas:117-39-5

Min.Order:1 Gram

FOB Price: $8900.0

Type:Lab/Research institutions

inquiry

Hebei Nengqian Chemical Import and Export Co., LTD

With our good experience, we offer detailed technical support and advice to assist customers. We communicate closely with customers to establish their quality requirements. Consistent Quality Our plant has strict quality control in each manufacturin

Natural Extract Quercetin CAS 117-39-5

Cas:117-39-5

Min.Order:1 Kilogram

FOB Price: $3.0 / 10.0

Type:Trading Company

inquiry

Hubei Vanz Pharm Co.,Ltd

Product Quick Information : Product Name Quercetin Powder Latin Name Sophora japonica L. Part Used Flower Appearance Light Yellow Fine Powder Active Ingredient Quercetin Specificat

factory supply 99% Quercetin powder

Cas:117-39-5

Min.Order:100 Gram

FOB Price: $1.2

Type:Trading Company

inquiry

Zhuozhou Wenxi import and Export Co., Ltd

WITH US,YOUR MONEY IN SAFE,YOUR BUSINESS IN SAFE 1)Quick Response Within 12 hours; 2)Quality Guarantee: All products are strictly tested by our QC, confirmed by QA and approved by third party lab in China, USA, Canada, Germany, UK, Italy, France et

Pharmaceutical Grade CAS 117-39-5 with competitive price

Cas:117-39-5

Min.Order:1 Kilogram

FOB Price: $139.0 / 210.0

Type:Trading Company

inquiry

LIDE PHARMACEUTICALS LIMITED

Advantage : LIDE PHARMACEUTICALS LTD. is a mid-small manufacturing-type enterprise, engaged in pharmaceutical intermediates of R&D, custom-made and production, and also involving trading chemicals for export. We have established the R&amp

Quercetin/ LIDE PHARMA- Factory supply / Best price

Cas:117-39-5

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

Henan Sinotech Import&Export Corporation

Name: Quercetin Synonyms: 3,3',4',5,7-pentahydroxyflavone CAS:117-39-5 MF: C15H10O6 Appearance:White powder Storage:Store in cool and dry place, away from sun light. Package:25kg/drum Application:APIs Transportation:By sea or by air Port

Quercetin

Cas:117-39-5

Min.Order:1 Kilogram

FOB Price: $1.0

Type:Other

inquiry

Hangzhou Sartort Biopharma Co., Ltd

Appearance:Yellow fine powder Storage:Room temperature Package:25kg/drum Application:Expectorant Transportation:Express/Sea/Air Port:Any port in China

High Quality Quercetin Sophora japonica Extract 95%

Cas:117-39-5

Min.Order:1 Kilogram

Negotiable

Type:Lab/Research institutions

inquiry

Hubei Langyou International Trading Co., Ltd

1. Guaranteed purity; 2. Large quantity in stock; 3. Largest manufacturer; 4. Best service after shipment with email; 5. High quality & competitive price; Appearance:White Crystalline Powder Storage:Store in sealed conta

high quality 117-39-5 Quercetin with best price

Cas:117-39-5

Min.Order:10 Gram

Negotiable

Type:Other

inquiry

HANWAYS CHEMPHARM CO.,LIMITED

Hanways chempharm is a specialized company concentrating on the R&D, production, marketing and technical service of APIs and pharmaceutical intermediates. The marketing department is located in Wuhan. We have two GMP facilities in Hubei Pr

Hot Selling Sophora Japonica Extract Powder 95% 98% Quercetin for Cough Suppressant & Expectorant

Cas:117-39-5

Min.Order:1 Kilogram

FOB Price: $200.0 / 400.0

Type:Trading Company

inquiry

Shanghai Upbio Tech Co.,Ltd

1.In No Less five years exporting experience. 2.Lower Price with higher quality 3,Free sample 4,We are sincerely responsible for the "product quality" and "After Service" Onchem (China) Co.,Ltd is Sp

High quality QUERCETIN

Cas:117-39-5

Min.Order:1 Kilogram

FOB Price: $10.0

Type:Lab/Research institutions

inquiry

Xi'an Faithful Biotech Co., Ltd.

We are the manufacturers and suppliers of API in China, and warehouse in Germany and USA of California, which can quickly and safely deliver to your address 1.High quality and competitive price. 2.Free sample for your evaluation. 3.Promptly delivery

Baoji Guokang Healthchem co.,ltd

Our company has been in existence for 10 years since its establishment. We have our own unique team. The company integrates independent research and development, production and sales. We have established famous brands at home and abroad. At present

Quercetin

Cas:117-39-5

Min.Order:1 Kilogram

FOB Price: $150.0 / 200.0

Type:Trading Company

inquiry

Qingdao Beluga Import and Export Co., LTD

Quercetin CAS: 117-39-5 Qingdao Belugas Import and Export Co., Ltd. is a scientific and technological company integrating research and development, production and trade of chemical intermediates, specializing in high quality organic intermediates, s

Quercetin CAS: 117-39-5

Cas:117-39-5

Min.Order:1 Gram

Negotiable

Type:Lab/Research institutions

inquiry

Shandong Hanjiang Chemical Co., Ltd.

Hello, dear friend! I'm Hansen and Allen from China. Welcome to my lookchem mall! The following is a brief introduction of our company's products and services. If you are interested in our products, please contact us by emai

Quercetin

Cas:117-39-5

Min.Order:1 Kilogram

Negotiable

Type:Lab/Research institutions

inquiry

Synthetic route

rutin
153-18-4

rutin

quercetol
117-39-5

quercetol

Conditions
ConditionsYield
With hydrogenchloride; methanol for 3h; Heating;96%
With water at 100℃; Kinetics; Ionic liquid;90%
With sulfuric acid; water at 20℃; for 0.166667h;89%
hydrogenchloride
7647-01-0

hydrogenchloride

quercetin triphenylantimony complex
187221-65-4

quercetin triphenylantimony complex

A

quercetol
117-39-5

quercetol

B

triphenylantimony dichloride
594-31-0, 34716-91-1, 20265-29-6

triphenylantimony dichloride

Conditions
ConditionsYield
heating (3 h, water bath); soln. pouring into Petri dish, solid extraction by benzene;A 75%
B 88%
6,8-dibromoquercetin
95412-48-9

6,8-dibromoquercetin

quercetol
117-39-5

quercetol

Conditions
ConditionsYield
With sodium sulfite In water at 60℃; for 18h; Green chemistry;87%
2-(3,4-dimethoxyphenyl)-3-hydroxy-5,7-dimethoxy-4H-4-chromenone
1244-78-6

2-(3,4-dimethoxyphenyl)-3-hydroxy-5,7-dimethoxy-4H-4-chromenone

quercetol
117-39-5

quercetol

Conditions
ConditionsYield
With boron tribromide In dichloromethane for 6h; Heating;83%
With trimethylsilyl iodide In methanol at 35℃; for 96h; Inert atmosphere;
Hyperoside
482-36-0

Hyperoside

A

D-Galactose
10257-28-0

D-Galactose

B

quercetol
117-39-5

quercetol

Conditions
ConditionsYield
With sulfuric acid at 100℃; for 1h;A n/a
B 68%
With grape snail enzymes
With rhamnodiastase
antoside

antoside

A

D-Glucose
2280-44-6

D-Glucose

B

L-rhamnose
73-34-7

L-rhamnose

C

quercetol
117-39-5

quercetol

Conditions
ConditionsYield
With sulfuric acid at 100℃; for 2h;A n/a
B n/a
C 68%
With sulfuric acid at 100℃; for 2h;A n/a
B n/a
C 47%
quercetin 7-O-β-D-glucopyranoside
491-50-9, 36450-05-2, 59985-52-3

quercetin 7-O-β-D-glucopyranoside

quercetol
117-39-5

quercetol

Conditions
ConditionsYield
Acid hydrolysis;68%
With sulfuric acid for 1h; Heating;
quercetin 7-O-β-D-glucopyranoside
491-50-9, 36450-05-2, 59985-52-3

quercetin 7-O-β-D-glucopyranoside

A

D-glucose
50-99-7

D-glucose

B

quercetol
117-39-5

quercetol

Conditions
ConditionsYield
With water Acidic conditions;A n/a
B 65%
With water Acidic conditions;
isoquercetin
482-35-9

isoquercetin

A

D-Glucose
2280-44-6

D-Glucose

B

quercetol
117-39-5

quercetol

Conditions
ConditionsYield
With sulfuric acidA n/a
B 64.3%
Product distribution; object of study - products of acid hydrolysis;
With 2M HCl In hydrogenchloride at 90℃; for 1h; Product distribution; other reagent;
Hyperoside
482-36-0

Hyperoside

A

D-Galactose
59-23-4

D-Galactose

B

quercetol
117-39-5

quercetol

Conditions
ConditionsYield
With water Acidic conditions;A n/a
B 64%
Acidic conditions;
Acidic aq. solution;
isoquercetin
482-35-9

isoquercetin

quercetol
117-39-5

quercetol

Conditions
ConditionsYield
Acidic conditions;63.3%
With oxonium
With hydrogenchloride; ethanol for 4h; Heating;
Hyperoside
482-36-0

Hyperoside

quercetol
117-39-5

quercetol

Conditions
ConditionsYield
Acidic conditions;63.3%
Acid hydrolysis;
With hydrogenchloride In water for 0.5h; Reflux;
Conditions
ConditionsYield
With α-L-rhamnosyl-β-D-glucosidase from Aspergillus niger K2 in Pichia pastoris In aq. phosphate buffer; dimethyl sulfoxide at 35 - 100℃; for 24h; pH=5; Enzymatic reaction;A 63%
B n/a
With rhamnodiastase Reactivity; Enzymatic reaction;
With rutinosidase In water Enzymatic reaction;
coniferol
458-35-5

coniferol

rutin
153-18-4

rutin

A

C22H32O12

C22H32O12

B

quercetol
117-39-5

quercetol

Conditions
ConditionsYield
With α-L-rhamnosyl-β-D-glucosidase from Aspergillus niger In dimethyl sulfoxide at 35℃; for 8h; pH=5; Enzymatic reaction;A 60%
B n/a
3,3',4',5,7-pentahydroxy flavanone
215257-15-1

3,3',4',5,7-pentahydroxy flavanone

quercetol
117-39-5

quercetol

Conditions
ConditionsYield
With potassium pyrosulfite In ethanol at 100℃;50%
With pyridine; air for 20h; Heating;
rutin
153-18-4

rutin

A

L-Rhamnose
3615-41-6

L-Rhamnose

B

D-glucose
50-99-7

D-glucose

C

quercetol
117-39-5

quercetol

Conditions
ConditionsYield
With sulfuric acid; waterA n/a
B n/a
C 47%
With sulfuric acid
With hydrogenchloride; water In methanol at 100℃; for 2h;
3,7-dihydroxyflavone
492-00-2

3,7-dihydroxyflavone

carbonic acid dimethyl ester
616-38-6

carbonic acid dimethyl ester

quercetol
117-39-5

quercetol

Conditions
ConditionsYield
With 1,8-diazabicyclo[5.4.0]undec-7-ene at 90℃; for 72h;28%
p-hydroxyphenethyl alcohol
501-94-0

p-hydroxyphenethyl alcohol

rutin
153-18-4

rutin

B

quercetol
117-39-5

quercetol

C

2-(4-hydroxyphenyl)ethyl β-rutinoside

2-(4-hydroxyphenyl)ethyl β-rutinoside

Conditions
ConditionsYield
Stage #1: p-hydroxyphenethyl alcohol; rutin In methanol at 40℃; for 30h;
Stage #2: With water In methanol for 0.166667h; Reflux; regioselective reaction;
A n/a
B n/a
C 24%
tamarixetin
603-61-2

tamarixetin

quercetol
117-39-5

quercetol

Conditions
ConditionsYield
With water; hydrogen iodide; acetic anhydride at 150℃;
3,3'-di-O-methylquercetin
4382-17-6

3,3'-di-O-methylquercetin

quercetol
117-39-5

quercetol

Conditions
ConditionsYield
With water; hydrogen iodide at 150℃;
2-benzo[1,3]dioxol-5-yl-3-hydroxy-5,7-dimethoxy-chromen-4-one
859439-36-4

2-benzo[1,3]dioxol-5-yl-3-hydroxy-5,7-dimethoxy-chromen-4-one

quercetol
117-39-5

quercetol

Conditions
ConditionsYield
With aluminium trichloride; chlorobenzene at 130℃; Erwaermen des Reaktionsgemisches mit wss. HCl;
rhamnetin
90-19-7

rhamnetin

quercetol
117-39-5

quercetol

avicularin
572-30-5

avicularin

A

D-Arabinose
10323-20-3

D-Arabinose

B

quercetol
117-39-5

quercetol

Conditions
ConditionsYield
With hydrogenchloride for 2h; Heating;
isoquercetin
482-35-9

isoquercetin

A

β-D-glucose
492-61-5

β-D-glucose

B

quercetol
117-39-5

quercetol

Conditions
ConditionsYield
Product distribution; acid hydrolysis;

A

L-rhamnose
73-34-7

L-rhamnose

B

quercetol
117-39-5

quercetol

Conditions
ConditionsYield
With hydrogenchloride
With sulfuric acid
quercetol
117-39-5

quercetol

acetic anhydride
108-24-7

acetic anhydride

3,5,7-triacetoxy-2-(3,4-diacetoxy-phenyl)-chromen-4-one
1064-06-8

3,5,7-triacetoxy-2-(3,4-diacetoxy-phenyl)-chromen-4-one

Conditions
ConditionsYield
With pyridine at 130 - 140℃;100%
With pyridine at 140 - 145℃; for 4h;97.5%
With pyridine at 70℃; for 6h;95%
quercetol
117-39-5

quercetol

C30H20O14Se

C30H20O14Se

Conditions
ConditionsYield
With hydrogenchloride; selenium(IV) oxide In ethanol; water at 60℃; for 12h; Inert atmosphere;99.2%
quercetol
117-39-5

quercetol

acetic anhydride
108-24-7

acetic anhydride

quercetin-3',4',5,7-tetraacetate
7622-90-4

quercetin-3',4',5,7-tetraacetate

Conditions
ConditionsYield
With magnesium In neat (no solvent) at 25℃; for 3.5h; Temperature;98%
quercetol
117-39-5

quercetol

glucosidase

glucosidase

isoquercetin
482-35-9

isoquercetin

Conditions
ConditionsYield
With 1% disodium hydrogen phosphate-sodium citrate; 35-40% glucosyltransferase at 40 - 45℃; Enzymatic reaction;97.2%
quercetol
117-39-5

quercetol

benzoyl chloride
98-88-4

benzoyl chloride

2-(3,4-bis(benzoyloxy)phenyl)-4-oxo-4H-chromene-3,5,7-triyl tribenzoate
120036-90-0

2-(3,4-bis(benzoyloxy)phenyl)-4-oxo-4H-chromene-3,5,7-triyl tribenzoate

Conditions
ConditionsYield
With pyridine In dichloromethane at 20℃; for 3h;97%
With pyridine at 22 - 24℃; for 4h;92%
With pyridine at 60℃;56%
With sodium hydroxide
quercetol
117-39-5

quercetol

2-Methylpropionic anhydride
97-72-3

2-Methylpropionic anhydride

2-(3,4-bis(isobutyryloxy)phenyl)-4-oxo-4H-chromene-3,5,7-triyl tris(2-methylpropanoate)
102607-68-1

2-(3,4-bis(isobutyryloxy)phenyl)-4-oxo-4H-chromene-3,5,7-triyl tris(2-methylpropanoate)

Conditions
ConditionsYield
With pyridine for 2h; Reflux;97%
In pyridine Ambient temperature;0.43 g
quercetol
117-39-5

quercetol

tert-butyldimethylsilyl chloride
18162-48-6

tert-butyldimethylsilyl chloride

3,3',4',5,7-penta-O-tert-butyldimethylsilylquercetin
265975-30-2

3,3',4',5,7-penta-O-tert-butyldimethylsilylquercetin

Conditions
ConditionsYield
With 1,8-diazabicyclo[5.4.0]undec-7-ene In dichloromethane at 20℃; for 6h; silylation;97%
With 1,8-diazabicyclo[5.4.0]undec-7-ene In dichloromethane at 20℃; for 5h;
quercetol
117-39-5

quercetol

benzyl bromide
100-39-0

benzyl bromide

2-[3,4-bis(phenylmethoxy)phenyl]-3,5,7-tris(phenylmethoxy)chromen-4-one
13157-90-9

2-[3,4-bis(phenylmethoxy)phenyl]-3,5,7-tris(phenylmethoxy)chromen-4-one

Conditions
ConditionsYield
With potassium carbonate In N,N-dimethyl-formamide at 80℃; for 72h;95%
With potassium carbonate In N,N-dimethyl-formamide at 70℃; for 4h; Etherification;89%
Stage #1: quercetol; benzyl bromide With potassium carbonate In N,N-dimethyl-formamide at 20 - 70℃; for 15h;
Stage #2: With water In N,N-dimethyl-formamide at 20℃; for 1h;
80%
quercetol
117-39-5

quercetol

benzyl chloride
100-44-7

benzyl chloride

2-[3,4-bis(phenylmethoxy)phenyl]-3,5,7-tris(phenylmethoxy)chromen-4-one
13157-90-9

2-[3,4-bis(phenylmethoxy)phenyl]-3,5,7-tris(phenylmethoxy)chromen-4-one

Conditions
ConditionsYield
With N-benzyl-N,N,N-triethylammonium chloride; potassium carbonate at 20℃; for 35h; Inert atmosphere;95%
With tetrabutylammomium bromide; potassium carbonate In 1-methyl-pyrrolidin-2-one; acetone at 85 - 90℃; for 24h;93%
With potassium carbonate; Aethyl-dipropyl-benzyl-ammonium In N,N,N,N,N,N-hexamethylphosphoric triamide for 35h; Inert atmosphere;90%
With tetrabutylammomium bromide; potassium carbonate In 1-methyl-pyrrolidin-2-one; acetone at 75℃; for 24h; Inert atmosphere;87%
With potassium carbonate; N,N-dimethyl-formamide at 20℃; for 12h;15%
quercetol
117-39-5

quercetol

sodium acetate
127-09-3

sodium acetate

acetic anhydride
108-24-7

acetic anhydride

3,5,7-triacetoxy-2-(3,4-diacetoxy-phenyl)-chromen-4-one
1064-06-8

3,5,7-triacetoxy-2-(3,4-diacetoxy-phenyl)-chromen-4-one

Conditions
ConditionsYield
Reflux; Inert atmosphere;95%
ZnCl2(1,10-phenanthroline)
14049-94-6

ZnCl2(1,10-phenanthroline)

quercetol
117-39-5

quercetol

[(1,10-phenanthroline)Zn(Quercetin)Cl].3H2O

[(1,10-phenanthroline)Zn(Quercetin)Cl].3H2O

Conditions
ConditionsYield
With triethylamine In ethanol; water at 20℃; for 0.166667h; Inert atmosphere;94%
quercetol
117-39-5

quercetol

2-(3',4'-dihydroxybenzoyloxy)-4,6-dihydroxybenzoic acid
30048-34-1

2-(3',4'-dihydroxybenzoyloxy)-4,6-dihydroxybenzoic acid

Conditions
ConditionsYield
With oxygen; tetraethylammonium tosylate In N,N-dimethyl-formamide Mechanism; electrolysis at -1.0 V, Au electrode;93%
With MES buffer; quercetinase EC 1.31.11.24 In dimethyl sulfoxide for 1h; pH=6;
With recombinant quercetinase from Aspergillus japonicus; oxygen In aq. buffer at 40 - 60℃; for 360h; pH=5; Reagent/catalyst; pH-value; Enzymatic reaction;
(2,2'-bipyridyl)dichlorozinc(II)
14491-36-2

(2,2'-bipyridyl)dichlorozinc(II)

quercetol
117-39-5

quercetol

[(2,2'-bipyridine)Zn(Quercetin)Cl].3H2O

[(2,2'-bipyridine)Zn(Quercetin)Cl].3H2O

Conditions
ConditionsYield
With triethylamine In ethanol; water at 20℃; for 0.166667h; Inert atmosphere;92%
dichloro(1,10-phenanthroline) copper(II)
14783-09-6

dichloro(1,10-phenanthroline) copper(II)

quercetol
117-39-5

quercetol

[(1,10-phenanthroline)Cu(Quercetin)Cl].3H2O

[(1,10-phenanthroline)Cu(Quercetin)Cl].3H2O

Conditions
ConditionsYield
With triethylamine In ethanol; water at 20℃; for 0.166667h; Inert atmosphere;92%
quercetol
117-39-5

quercetol

1-deoxy-1-fluoro-α-D-glucose
2106-10-7

1-deoxy-1-fluoro-α-D-glucose

quercetin 7-α-O-glucoside

quercetin 7-α-O-glucoside

Conditions
ConditionsYield
With α-glucosidase from sulfolobus solfataricus In dimethyl sulfoxide at 45℃; for 2h; pH=9; Enzymatic reaction;92%
quercetol
117-39-5

quercetol

2-(3,4-dihydroxy-5-sulfophenyl)-3,5,7-trihydroxy-4H-benzopyran-4-one
31273-65-1

2-(3,4-dihydroxy-5-sulfophenyl)-3,5,7-trihydroxy-4H-benzopyran-4-one

Conditions
ConditionsYield
With sulfuric acid at 80℃; for 2h;90%
quercetol
117-39-5

quercetol

A

C15H7O16S3(3-)*3K(1+)
116097-14-4

C15H7O16S3(3-)*3K(1+)

B

quercetin-3,7,3',4'-tetrasulphate potassium
90332-36-8, 119560-46-2

quercetin-3,7,3',4'-tetrasulphate potassium

Conditions
ConditionsYield
With potassium acetate; tetra(n-butyl)ammonium hydrogensulfate; dicyclohexyl-carbodiimide In pyridine at 25℃; for 288h;A 89%
B n/a
Dichlorodiphenylmethane
2051-90-3

Dichlorodiphenylmethane

quercetol
117-39-5

quercetol

2-(2,2-diphenylbenzo[1,3]dioxol-5-yl)-3,5,7-trihydroxychromen-4-one
357194-03-7

2-(2,2-diphenylbenzo[1,3]dioxol-5-yl)-3,5,7-trihydroxychromen-4-one

Conditions
ConditionsYield
In diphenylether at 175℃; for 2h;89%
In diphenylether at 175℃; for 2h;89%
In diphenylether at 175℃; for 0.5h; Inert atmosphere; regioselective reaction;86%
ethanol
64-17-5

ethanol

quercetol
117-39-5

quercetol

2-(3,4-Dihydroxy-phenyl)-2-ethoxy-3,3,5,7-tetrahydroxy-chroman-4-one
102788-22-7

2-(3,4-Dihydroxy-phenyl)-2-ethoxy-3,3,5,7-tetrahydroxy-chroman-4-one

Conditions
ConditionsYield
With oxygen; copper dichloride at 20℃; for 10h;88%
With phosphate buffer at 80℃; for 7h; Irradiation;3 mg
With phosphate buffer at 30℃; for 4h; Irradiation; enzyme solution from red clover (leaves and stems);2 mg
quercetol
117-39-5

quercetol

ethyl iodide
75-03-6

ethyl iodide

2-(3,4-diethoxyphenyl)-3,5,7-triethoxy-4H-chromen-4-one
82547-07-7

2-(3,4-diethoxyphenyl)-3,5,7-triethoxy-4H-chromen-4-one

Conditions
ConditionsYield
With potassium carbonate In N,N-dimethyl-formamide at 45℃; for 12h; Inert atmosphere;87%
With potassium carbonate In N,N-dimethyl-formamide at 20℃; for 15h; Inert atmosphere;82%
With tetraethylammonium fluoride In N,N-dimethyl-formamide for 20h;70%
With potassium hydroxide
quercetol
117-39-5

quercetol

pivaloyl chloride
3282-30-2

pivaloyl chloride

2-(3,4-bis(pivaloyloxy)phenyl)-4-oxo-4H-chromene-3,5,7-triyl tris(2,2-dimethylpropanoate)

2-(3,4-bis(pivaloyloxy)phenyl)-4-oxo-4H-chromene-3,5,7-triyl tris(2,2-dimethylpropanoate)

Conditions
ConditionsYield
With pyridine for 2h; Reflux;87%
With pyridine for 16h; Ambient temperature;67%
quercetol
117-39-5

quercetol

6-bromo-2-(3,4-dihydroxyphenyl)-3,5,7-trihydroxy-4H-chromen-4-one

6-bromo-2-(3,4-dihydroxyphenyl)-3,5,7-trihydroxy-4H-chromen-4-one

Conditions
ConditionsYield
With bromine In 1,4-dioxane at 20 - 22℃; for 2h;86.1%
Stage #1: quercetol With N-Bromosuccinimide; sodium hydroxide In methanol; water at 20℃; for 0.166667h; Inert atmosphere; Green chemistry;
Stage #2: With hydrogenchloride; sodium dithionite In methanol; water at 20℃; Inert atmosphere; Green chemistry;
400 mg
Multi-step reaction with 3 steps
1: potassium carbonate / N,N-dimethyl-formamide / 12 h / 60 °C / Inert atmosphere
2: N-Bromosuccinimide / dichloromethane / -40 °C / Inert atmosphere
3: boron trichloride / dichloromethane; hexane / 2.5 h / -20 °C / Inert atmosphere; Reflux
View Scheme
With bromine In 1,4-dioxane at 24.84℃;
quercetol
117-39-5

quercetol

methyl iodide
74-88-4

methyl iodide

pentamethyl quercetin
1247-97-8

pentamethyl quercetin

Conditions
ConditionsYield
With potassium carbonate In N,N-dimethyl-formamide at 35℃; for 12h; Inert atmosphere;86%
With sodium hydride In N,N-dimethyl-formamide at 20℃; for 12h;84%
With potassium carbonate In acetone for 24h; Reflux;82%
quercetol
117-39-5

quercetol

3,5,7-trihydroxy-2-(3,4-dihydroxyphenyl-2,5,6-D3)-4H-1-benzopyran-4-one-6,8-D2

3,5,7-trihydroxy-2-(3,4-dihydroxyphenyl-2,5,6-D3)-4H-1-benzopyran-4-one-6,8-D2

Conditions
ConditionsYield
With boron trifluoride; [D3]phosphoric acid In water-d2 at 55℃; for 48h; deuteration;86%
Stage #1: quercetol With [D]-sodium hydroxide; platinum on activated charcoal; water-d2 at 130℃; for 9h; Inert atmosphere;
Stage #2: With formic acid at 130℃; for 1h; Inert atmosphere;
63%
C35H56O5
1186389-75-2

C35H56O5

quercetol
117-39-5

quercetol

C50H64O11
1186389-71-8

C50H64O11

Conditions
ConditionsYield
With benzotriazol-1-ol; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride In N,N-dimethyl-formamide at 60℃; Inert atmosphere;86%
dimethylsulfide
75-18-3

dimethylsulfide

quercetol
117-39-5

quercetol

retusin
1245-15-4

retusin

Conditions
ConditionsYield
With potassium hydroxide In water; acetone86%
quercetol
117-39-5

quercetol

L-proline
147-85-3

L-proline

quercetin L-proline cocrystals(1:2)

quercetin L-proline cocrystals(1:2)

Conditions
ConditionsYield
In ethanol at 50℃;85.5%
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