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
Cas:490-31-3
Min.Order:1 Kilogram
FOB Price: $3.0
Type:Lab/Research institutions
inquiryWITH 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
Cas:490-31-3
Min.Order:1 Kilogram
FOB Price: $139.0 / 210.0
Type:Trading Company
inquiryOur 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
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
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
Cas:490-31-3
Min.Order:1 Kilogram
Negotiable
Type:Lab/Research institutions
inquiryROBINETIN 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
Cas:490-31-3
Min.Order:1 Gram
Negotiable
Type:Lab/Research institutions
inquiryHello, 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
Cas:490-31-3
Min.Order:1 Kilogram
Negotiable
Type:Lab/Research institutions
inquiryHenan 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
Cas:490-31-3
Min.Order:0
Negotiable
Type:Lab/Research institutions
inquirysuperior 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
Cas:490-31-3
Min.Order:1 Kilogram
Negotiable
Type:Trading Company
inquiryJ&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
Cas:490-31-3
Min.Order:0
Negotiable
Type:Lab/Research institutions
inquiryZibo 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
Cas:490-31-3
Min.Order:10 Gram
FOB Price: $100.0
Type:Lab/Research institutions
inquiryfactory?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
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
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
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
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
Cas:490-31-3
Min.Order:1 bottle
Negotiable
Type:Lab/Research institutions
inquiryhigh 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
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
Cas:490-31-3
Min.Order:0
Negotiable
Type:Lab/Research institutions
inquirybest price high quality Storage:Room Temperature Application:For pharmacy chemicals Transportation:by sea, air
ROBINETIN Application:ROBINETIN
Supply top quality products with a reasonable price Application:api
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
Cas:490-31-3
Min.Order:0
Negotiable
Type:Other
inquiryfactory?direct?saleAppearance:White powder Storage:Sealed and preserved Package:200/Kilograms Application:healing drugs Transportation:By sea Port:Shanghai/tianjin
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
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
Good Quality Package:1kg/bag Application:Medical or chemical Transportation:Air/Train/Sea Port:Shenzhen
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
Stable supply of goods and provision of high-quality services Application:As raw materials in the field of medicine and biology
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
factory?direct?saleAppearance:White powder Storage:Sealed and preserved Package:200/Kilograms Application:healing drugs Transportation:By sea Port:Shanghai/tianjin
7-benzyloxy-3-hydroxy-2-(3,4,5-trimethoxy-phenyl)-chromen-4-one
robinetin
Conditions | Yield |
---|---|
With boron tribromide In dichloromethane at 20℃; for 22h; | 99% |
robinetin
Conditions | Yield |
---|---|
With boron tribromide In dichloromethane at 20℃; for 48h; Inert atmosphere; | 81% |
Robinetin trimethyl ether
robinetin
Conditions | Yield |
---|---|
With hydrogen iodide; acetic anhydride |
3,7,3'-trimethoxy-4',5'-dihydroxyflavone
robinetin
Conditions | Yield |
---|---|
With hydrogen iodide; acetic anhydride |
7-hydroxy-3-methoxy-2-(3,4,5-trimethoxy-phenyl)-chromen-4-one
robinetin
Conditions | Yield |
---|---|
With hydrogen iodide; acetic anhydride |
Conditions | Yield |
---|---|
With sulfuric acid Durchleiten von Luft; |
1-[4-(benzyloxy)-2-hydroxyphenyl]ethanone
robinetin
Conditions | Yield |
---|---|
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 |
Conditions | Yield |
---|---|
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 |
robinetin
Conditions | Yield |
---|---|
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
robinetin
Conditions | Yield |
---|---|
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 |
Conditions | Yield |
---|---|
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
robinetin
Conditions | Yield |
---|---|
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
robinetin
Conditions | Yield |
---|---|
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 |
Conditions | Yield |
---|---|
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 |
Conditions | Yield |
---|---|
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 |
diazomethane
robinetin
3,7,3',4',5'-O-pentamethylrobinetin
Conditions | Yield |
---|---|
With methanol; diethyl ether |
robinetin
acetic anhydride
3,7-diacetoxy-2-(3,4,5-triacetoxy-phenyl)-chromen-4-one
Conditions | Yield |
---|---|
With pyridine |
Conditions | Yield |
---|---|
With potassium carbonate; acetone |
robinetin
Conditions | Yield |
---|---|
With 2,2-diphenyl-1-(2,4,6-trinitrophenyl)hydrazyl In methanol at 25℃; Kinetics; Further Variations:; Solvents; |
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