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Dayang Chem (Hangzhou) Co.,Ltd.

As a leading manufacturer and supplier of chemicals in China, DayangChem not only supply popular chemicals, but also DayangChem's R&D center offer custom synthesis services. DayangChem can provide different quantities of custom synthesis ch

4H-1-Benzopyran-4-one,3,7-dihydroxy-2-(3,4,5-trihydroxyphenyl)-

Cas:490-31-3

Min.Order:1 Kilogram

FOB Price: $3.0

Type:Lab/Research institutions

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 490-31-3 with competitive price

Cas:490-31-3

Min.Order:1 Kilogram

FOB Price: $139.0 / 210.0

Type:Trading Company

inquiry

Wuhan Han Sheng New Material Technology Co.,Ltd

Our Advantage: high quality with competitive price High quality standard: BP/USP/EP Enterprise standard All purity customized Fast and safe delivery We have reliable forwarder who can help us deliver our goods more fast and safe. We

ROBINETIN 490-31-3

Cas:490-31-3

Min.Order:10 Kilogram

Negotiable

Type:Trading Company

inquiry

Hebei Sankai Chemical Technology Co., Ltd

1. Product advantages High purity, all above 98.5%, no impurities after dissolution We will test each batch to ensure quality OEM and private brand services designed for free Various cap colors available We can also provide MT1 peptide powd

ROBINETIN

Cas:490-31-3

Min.Order:1 Kilogram

FOB Price: $5.0 / 10.0

Type:Trading Company

inquiry

Shanghai Upbio Tech Co.,Ltd

1.No Less 8 years exporting experience. Clients can 100% received goods 2.Lower Price with higher quality 3,Free sample 4,We are sincerely responsible for the "product quality" and "After Service" Upbio is Specialized

4H-1-Benzopyran-4-one,3,7-dihydroxy-2-(3,4,5-trihydroxyphenyl)- 490-31-3

Cas:490-31-3

Min.Order:1 Kilogram

Negotiable

Type:Lab/Research institutions

inquiry

Qingdao Beluga Import and Export Co., LTD

ROBINETIN CAS:490-31-3 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, st

ROBINETIN CAS:490-31-3

Cas:490-31-3

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

4H-1-Benzopyran-4-one,3,7-dihydroxy-2-(3,4,5-trihydroxyphenyl)-

Cas:490-31-3

Min.Order:1 Kilogram

Negotiable

Type:Lab/Research institutions

inquiry

Henan Wentao Chemical Product Co., Ltd.

Henan Wentao Chemical Product Co.,Ltd is Located in Zhengzhou High-tech Development Zone with import and export license, We passed ISO 9001:2008 as well, Henan Wentao has developed more than 1000 compounds, which are widely used in the fields of prod

4H-1-Benzopyran-4-one,3,7-dihydroxy-2-(3,4,5-trihydroxyphenyl)-

Cas:490-31-3

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

HANGZHOU YUNUO CHEMICAL CO.,LTD

superior quality Appearance:powder Storage:Stored in cool, dry and ventilation place; Away from fire and heat Package:1kg/bag, 1kg/drum or 25kg/drum or as per your request. Application:Used as Pharmaceutical Intermediates Transportation:as per your

4H-1-Benzopyran-4-one,3,7-dihydroxy-2-(3,4,5-trihydroxyphenyl)-

Cas:490-31-3

Min.Order:1 Kilogram

Negotiable

Type:Trading Company

inquiry

Hangzhou J&H Chemical Co., Ltd.

J&H CHEM 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. J&H CHEM has some Manufacturing base in Jia

4H-1-Benzopyran-4-one,3,7-dihydroxy-2-(3,4,5-trihydroxyphenyl)-

Cas:490-31-3

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

Zibo Hangyu Biotechnology Development Co., Ltd

Zibo Hangyu Biotechnology Development Co., Ltd is a leading manufacturer and supplier of chemicals in China. We develop produce and distribute high quality pharmaceuticals, intermediates, special chemicals and OLED intermediates and other fine chemi

4H-1-Benzopyran-4-one,3,7-dihydroxy-2-(3,4,5-trihydroxyphenyl)-

Cas:490-31-3

Min.Order:10 Gram

FOB Price: $100.0

Type:Lab/Research institutions

inquiry

EAST CHEMSOURCES LIMITED

factory?direct?saleAppearance:White Powder Storage:Store In Dry, Cool And Ventilated Place Package:25kg/drum, also according to the clients requirement Application:It is widely used as a thickener, emulsifier and stabilizer Transportation:By Sea Or B

ROBINETIN

Cas:490-31-3

Min.Order:1 Kilogram

FOB Price: $18.0 / 20.0

Type:Trading Company

inquiry

Shandong Mopai Biotechnology Co., LTD

Shandong Mopai Biotechnology Co., LTD is a leading manufacturer and supplier of chemicals in China. We develop produce and distribute high quality pharmaceuticals, intermediates, special chemicals and OLED intermediates and other fine chemicals. W

ROBINETIN

Cas:490-31-3

Min.Order:1 Gram

Negotiable

Type:Lab/Research institutions

inquiry

KAISA GROUP INC

1.Applied in food field.it can improve the immune system and prolong life. 2.Appliedin cosmetic field.it can improve the skin care. 3.Applied in pharmaceutical field.it can treat various dieases. 4.Our product quality assurance will make our customer

ROBINETIN

Cas:490-31-3

Min.Order:1 Metric Ton

FOB Price: $1.5

Type:Trading Company

inquiry

Bluecrystal chem-union

We are a Union of chemistry in China, consists of chemists,engineers, laboratories,factories in China. We organize surplus capacity of R&D and production as well as custom synthesis for chemical products and chemical business project. We are supp

ROBINETIN

Cas:490-31-3

Min.Order:1 Metric Ton

FOB Price: $1.0

Type:Trading Company

inquiry

Shanghai Acmec Biochemical Technology Co., Ltd.

Acmec is a leading manufacturer and supplier of biochemical reagents and life science products. We have over 40,000 items in stock (real-time inventory) and offer discounted prices to registered members of the online store ( www.acmec.com.cn ) Appea

Acmec Robinetin R86870 5mg

Cas:490-31-3

Min.Order:1 bottle

Negotiable

Type:Lab/Research institutions

inquiry

Henan Allgreen Chemical Co.,Ltd

high quality Storage:Sealed, dry, microtherm , avoid light and smell. Package:According to the demand of customer Application:Organic synthesis Transportation:by air or by sea

Robinetin

Cas:490-31-3

Min.Order:0

Negotiable

Type:Manufacturers

inquiry

Antimex Chemical Limied

Ansciep Chemical is a professional enterprise manufacturing and distributing fine chemicals and speciality chemicals. We have been dedicated to heterocycle compounds and phenyl rings for tens of years. This is our mature product for export. Our quali

4H-1-Benzopyran-4-one,3,7-dihydroxy-2-(3,4,5-trihydroxyphenyl)-

Cas:490-31-3

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

Henan Tianfu Chemical Co., Ltd.

best price high quality Storage:Room Temperature Application:For pharmacy chemicals Transportation:by sea, air

ROBINETIN

Cas:490-31-3

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

Hubei Langyou International Trading Co., Ltd

ROBINETIN Application:ROBINETIN

ROBINETIN

Cas:490-31-3

Min.Order:0

Negotiable

Type:Other

inquiry

Changchun Artel lmport and Export trade company

Supply top quality products with a reasonable price Application:api

490-31-3

Cas:490-31-3

Min.Order:0

Negotiable

Type:Trading Company

inquiry

Hangzhou Fandachem Co.,Ltd

4H-1-Benzopyran-4-one,3,7-dihydroxy-2-(3,4,5-trihydroxyphenyl)- cas 490-31-3Appearance:white crystalline powder Storage:Store in dry, dark and ventilated place Package:25KG drum Application:intermediate Transportation:by air, by sea, by express

Henan Kanbei Chemical Co.,LTD

factory?direct?saleAppearance:White powder Storage:Sealed and preserved Package:200/Kilograms Application:healing drugs Transportation:By sea Port:Shanghai/tianjin

ROBINETIN

Cas:490-31-3

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

Hebei Quanhe Biotechnology Co. LTD

1. Timely and efficient service to ensure communication with customers2. Produce products of different specifications and sizes according to your requirements.3. Quality procedures and standards recognized by SGS. Advanced plant equipment ensures sta

ROBINETIN

Cas:490-31-3

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

Hunan Longxianng Runhui Trading Co.,Ltd

ROBINETINAppearance:detailed in specifications Storage:Keep in dry and cool place Package:according to clients requirement Application:It is an important raw material and intermediate used in Organic Synthesis,Pharmaceuticals, Agrochemicals and Dyest

ROBINETIN

Cas:490-31-3

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

Shanghai Chinqesen Biotechnology Co., Ltd.

Good Quality Package:1kg/bag Application:Medical or chemical Transportation:Air/Train/Sea Port:Shenzhen

490-31-3

Cas:490-31-3

Min.Order:0

Negotiable

Type:Trading Company

inquiry

Chemsigma International Co.,Ltd.

bulk production Chemsigma International Co.,Ltd. is a chemical manufacturer, specialize in custom synthesis and organic chemical manufacturing for overseas customers, in the field of API, pharmaceutical intermediates, chemical intermediates, fine ch

ROBINETIN

Cas:490-31-3

Min.Order:0 Metric Ton

Negotiable

Type:Lab/Research institutions

inquiry

Saiwante (shanghai) New Material Technology Co., Ltd.

Stable supply of goods and provision of high-quality services Application:As raw materials in the field of medicine and biology

ROBINETIN

Cas:490-31-3

Min.Order:0

Negotiable

Type:Trading Company

inquiry

Shanghai Yuanye Bio-Technology Co., Ltd.

Known for its best quality and competitve price, this chemicals we offered is widely appreciated by our customers.Appearance:White powder Storage:keep sealed and keep from direct light Package:According client's requirements Application:pharmaceutica

Robinetin manufacturer

Cas:490-31-3

Min.Order:0

Negotiable

Type:Trading Company

inquiry

ZHEJIANG JIUZHOU CHEM CO.,LTD

factory?direct?saleAppearance:White powder Storage:Sealed and preserved Package:200/Kilograms Application:healing drugs Transportation:By sea Port:Shanghai/tianjin

ROBINETIN

Cas:490-31-3

Min.Order:0

Negotiable

Type:Trading Company

inquiry

Synthetic route

7-benzyloxy-3-hydroxy-2-(3,4,5-trimethoxy-phenyl)-chromen-4-one
354119-95-2

7-benzyloxy-3-hydroxy-2-(3,4,5-trimethoxy-phenyl)-chromen-4-one

robinetin
490-31-3

robinetin

Conditions
ConditionsYield
With boron tribromide In dichloromethane at 20℃; for 22h;99%
3-Hydroxy-7,3',4',5'-tetramethoxyflavone

3-Hydroxy-7,3',4',5'-tetramethoxyflavone

robinetin
490-31-3

robinetin

Conditions
ConditionsYield
With boron tribromide In dichloromethane at 20℃; for 48h; Inert atmosphere;81%
Robinetin trimethyl ether
132594-09-3

Robinetin trimethyl ether

robinetin
490-31-3

robinetin

Conditions
ConditionsYield
With hydrogen iodide; acetic anhydride
3,7,3'-trimethoxy-4',5'-dihydroxyflavone
223902-81-6

3,7,3'-trimethoxy-4',5'-dihydroxyflavone

robinetin
490-31-3

robinetin

Conditions
ConditionsYield
With hydrogen iodide; acetic anhydride
7-hydroxy-3-methoxy-2-(3,4,5-trimethoxy-phenyl)-chromen-4-one
20979-43-5

7-hydroxy-3-methoxy-2-(3,4,5-trimethoxy-phenyl)-chromen-4-one

robinetin
490-31-3

robinetin

Conditions
ConditionsYield
With hydrogen iodide; acetic anhydride
Dihydrorobinetin
4382-33-6

Dihydrorobinetin

robinetin
490-31-3

robinetin

Conditions
ConditionsYield
With sulfuric acid Durchleiten von Luft;
1-[4-(benzyloxy)-2-hydroxyphenyl]ethanone
29682-12-0

1-[4-(benzyloxy)-2-hydroxyphenyl]ethanone

robinetin
490-31-3

robinetin

Conditions
ConditionsYield
Multi-step reaction with 3 steps
1: potassium hydroxide / ethanol / 144 h
2: 84 mg / H2O2; NaOH / tetrahydrofuran; H2O / 47 h / cooling
3: 99 percent / boron tribromide / CH2Cl2 / 22 h / 20 °C
View Scheme
2',4'-dihydroxy-4-acetophenone
89-84-9

2',4'-dihydroxy-4-acetophenone

robinetin
490-31-3

robinetin

Conditions
ConditionsYield
Multi-step reaction with 4 steps
1: 87 percent / potassium carbonate / acetone / 18 h / Heating
2: potassium hydroxide / ethanol / 144 h
3: 84 mg / H2O2; NaOH / tetrahydrofuran; H2O / 47 h / cooling
4: 99 percent / boron tribromide / CH2Cl2 / 22 h / 20 °C
View Scheme
1-(4-benzyloxy-2-hydroxy-phenyl)-3-(3,4,5-trimethoxy-phenyl)-propenone

1-(4-benzyloxy-2-hydroxy-phenyl)-3-(3,4,5-trimethoxy-phenyl)-propenone

robinetin
490-31-3

robinetin

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: 84 mg / H2O2; NaOH / tetrahydrofuran; H2O / 47 h / cooling
2: 99 percent / boron tribromide / CH2Cl2 / 22 h / 20 °C
View Scheme
2',4'-dihydroxy-2-methoxyacetophenone
57280-75-8

2',4'-dihydroxy-2-methoxyacetophenone

robinetin
490-31-3

robinetin

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: sodium-<3,4,5-trimethoxy benzoate> / 180 °C / Erwaermen des Reaktionsprodukts mit wss.-aethanol. Kalilauge
2: acetic acid anhydride; aqueous hydriodic acid
View Scheme
3,4,5-trimethoxybenzoic anhydride
1719-88-6

3,4,5-trimethoxybenzoic anhydride

robinetin
490-31-3

robinetin

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: sodium-<3,4,5-trimethoxy benzoate> / 180 °C / Erwaermen des Reaktionsprodukts mit wss.-aethanol. Kalilauge
2: acetic acid anhydride; aqueous hydriodic acid
View Scheme
3-hydroxy-7-methoxymethoxy-2-(3,4,5-trimethoxy-phenyl)-chromen-4-one
109980-57-6

3-hydroxy-7-methoxymethoxy-2-(3,4,5-trimethoxy-phenyl)-chromen-4-one

robinetin
490-31-3

robinetin

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: acetic acid; aqueous sulfuric acid
2: acetic acid anhydride; aqueous hydriodic acid
View Scheme
(E)‐1‐(2‐hydroxy‐4‐methoxyphenyl)‐3‐(3,4,5‐trimethoxyphenyl)prop‐2‐en‐1‐one
13745-26-1, 142955-69-9

(E)‐1‐(2‐hydroxy‐4‐methoxyphenyl)‐3‐(3,4,5‐trimethoxyphenyl)prop‐2‐en‐1‐one

robinetin
490-31-3

robinetin

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: sodium hydroxide; dihydrogen peroxide / ethanol; water / 20 °C
2: boron tribromide / dichloromethane / 48 h / 20 °C / Inert atmosphere
View Scheme
1-(2-hydroxy-4-methoxyphenyl)ethanone
552-41-0

1-(2-hydroxy-4-methoxyphenyl)ethanone

robinetin
490-31-3

robinetin

Conditions
ConditionsYield
Multi-step reaction with 3 steps
1: sodium hydroxide / ethanol / 20 °C
2: sodium hydroxide; dihydrogen peroxide / ethanol; water / 20 °C
3: boron tribromide / dichloromethane / 48 h / 20 °C / Inert atmosphere
View Scheme
3,4,5-trimethoxy-benzaldehyde
86-81-7

3,4,5-trimethoxy-benzaldehyde

robinetin
490-31-3

robinetin

Conditions
ConditionsYield
Multi-step reaction with 3 steps
1: sodium hydroxide / ethanol / 20 °C
2: sodium hydroxide; dihydrogen peroxide / ethanol; water / 20 °C
3: boron tribromide / dichloromethane / 48 h / 20 °C / Inert atmosphere
View Scheme
robinetin
490-31-3

robinetin

3,7,3',4',5'-O-pentamethylrobinetin
19056-76-9

3,7,3',4',5'-O-pentamethylrobinetin

Conditions
ConditionsYield
With methanol; diethyl ether
robinetin
490-31-3

robinetin

acetic anhydride
108-24-7

acetic anhydride

3,7-diacetoxy-2-(3,4,5-triacetoxy-phenyl)-chromen-4-one
73489-98-2

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

Conditions
ConditionsYield
With pyridine
robinetin
490-31-3

robinetin

dimethyl sulfate
77-78-1

dimethyl sulfate

3,7,3',4',5'-O-pentamethylrobinetin
19056-76-9

3,7,3',4',5'-O-pentamethylrobinetin

Conditions
ConditionsYield
With potassium carbonate; acetone
robinetin
490-31-3

robinetin

C15H7O7

C15H7O7

Conditions
ConditionsYield
With 2,2-diphenyl-1-(2,4,6-trinitrophenyl)hydrazyl In methanol at 25℃; Kinetics; Further Variations:; Solvents;

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