DayangChem exported this product to many countries and regions at best price. If you are looking for the material's manufacturer or supplier in China, DayangChem is your best choice. Pls contact with us freely for getting detailed product spe
Cas:4732-72-3
Min.Order:1 Kilogram
FOB Price: $3.0
Type:Lab/Research institutions
inquiryhebei 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
Cas:4732-72-3
Min.Order:1 Metric Ton
FOB Price: $1.0 / 3.0
Type:Manufacturers
inquiryWith 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
Cas:4732-72-3
Min.Order:1 Kilogram
FOB Price: $3.0 / 10.0
Type:Trading Company
inquiry1.In No Less 10 years exporting experience. you 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 Specializ
Cas:4732-72-3
Min.Order:1 Gram
Negotiable
Type:Lab/Research institutions
inquiryBenzofuran-2,3-dione CAS:4732-72-3 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 inter
Cas:4732-72-3
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:4732-72-3
Min.Order:1 Kilogram
Negotiable
Type:Lab/Research institutions
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Cas:4732-72-3
Min.Order:10 Gram
FOB Price: $100.0
Type:Lab/Research institutions
inquiryWe are one of a few suppliers that can offer custom synthesis service of this product We are specialized in custom synthesis, chemical/pharmaceutical/ pesticides outsourcing and contract research. We are committed to prov
Cas:4732-72-3
Min.Order:100 Gram
FOB Price: $100.0 / 2000.0
Type:Lab/Research institutions
inquiryOur Advantages A. International Top level TechnologyOur company owned biomedicine experts are famous at home and abroad with rich experience in research and development in the field of efficient chiral functional molecules research and development an
Cas:4732-72-3
Min.Order:0
Negotiable
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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
Cas:4732-72-3
Min.Order:1 Kilogram
FOB Price: $18.0 / 20.0
Type:Trading Company
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Cas:4732-72-3
Min.Order:1 Gram
Negotiable
Type:Lab/Research institutions
inquiry1.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
Cas:4732-72-3
Min.Order:1 Metric Ton
FOB Price: $1.5
Type:Trading Company
inquirySAGECHEM is a chemical R&D, manufacturing and distribution company in China since 2009, including pharmaceutical intermediates, agrochemical, dyestuff intermediates, organosilicone, API and etc. We also offer a full range of services in custom synthe
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Cas:4732-72-3
Min.Order:1 Metric Ton
FOB Price: $1.0
Type:Trading Company
inquiryLower price, sample is available,SDS test documents are available,large stock in warehouseAppearance:White powder Storage:Sealed and preserved Package:200/Kilograms Application:Fine chemical intermediates, used as the main raw material for the synthe
Cas:4732-72-3
Min.Order:0
Negotiable
Type:Lab/Research institutions
inquiryR & D enterprises have their own stock in stock Package:1kg Application:pharmaceutical intermediates
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:4732-72-3
Min.Order:1 bottle
Negotiable
Type:Lab/Research institutions
inquiryJ&H CHEM is one of China's leading providers of integrated fine chemical services including offering, research and development, Custom manufacturing business, as well as other Value-added customer services, for diversified range products of chemicals
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1,we produce and sell good chemicals around the world.2,our success rate is about 95%. this means, if customer order is accepted, the probability that the customer will obtain the ordered substances, is 95%.3,our staff consists of highly qualified in
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
2,3-Benzofurandione CAS NO.4732-72-3 Application:2,3-Benzofurandione CAS NO.4732-72-3
Coumarandione cas 4732-72-3Appearance:white crystalline powder Storage:Store in dry, dark and ventilated place Package:25KG drum Application:intermediate Transportation:by air, by sea, by express
1,we produce and sell good chemicals around the world. 2,our success rate is about 95%. this means, if customer order is accepted, the probability that the customer will obtain the ordered substances, is 95%. 3,our staff consists of highl
factory?direct?saleAppearance:White powder Storage:Sealed and preserved Package:200/Kilograms Application:healing drugs Transportation:By sea Port:Shanghai/tianjin
hight degree of purityAppearance:COA mentioned Storage:COA mentioned Package:Standard or custom package Application:hight degree of purity Transportation:Express/Sea/Air Port:Any port in China
coumarandione
Conditions | Yield |
---|---|
With hydrogenchloride; acetic acid In water Heating; | 87% |
coumarandione
Conditions | Yield |
---|---|
With N-chloro-succinimide; silver nitrate In acetonitrile at 0℃; for 0.0833333h; | 50% |
Conditions | Yield |
---|---|
Stage #1: indole-2,3-dione With sodium hydroxide; sodium nitrite In water Cooling with ice; Stage #2: With sulfuric acid In water at 60℃; Cooling with ice; | 46% |
Multi-step reaction with 2 steps 1.1: sodium hydroxide / water / 20 °C 1.2: 2.25 h / 0 - 60 °C 2.1: phosphorus pentoxide / toluene / 6 h / Reflux; Dean-Stark View Scheme |
(2-hydroxyphenyl)oxoacetic acid
coumarandione
Conditions | Yield |
---|---|
With acetic anhydride for 0.0833333h; Heating; | 29% |
bei der Destillation unter vermindertem Druck; | |
With phosphorus pentaoxide; Petroleum ether | |
With acetic anhydride Heating; | |
With phosphorus pentoxide In toluene for 6h; Reflux; Dean-Stark; |
2,2'-bi-benzofuranylidene-3,3'-dione
coumarandione
Conditions | Yield |
---|---|
With chromic acid |
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1: SeO2 2: Ac2O / Heating View Scheme |
2-trifluoromethylsulfonyloxybenzoic acid ethyl ester
coumarandione
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1.1: n-butyllithium / hexane; tetrahydrofuran / 0.67 h / -40 - -20 °C / Inert atmosphere 1.2: -78 - 25 °C / Inert atmosphere 2.1: N-chloro-succinimide; silver nitrate / acetonitrile / 0.08 h / 0 °C View Scheme |
Conditions | Yield |
---|---|
Multi-step reaction with 3 steps 1.1: sodium hydride / dichloromethane; mineral oil; hexane / 0 °C / Inert atmosphere 1.2: -78 °C / Inert atmosphere 2.1: n-butyllithium / hexane; tetrahydrofuran / 0.67 h / -40 - -20 °C / Inert atmosphere 2.2: -78 - 25 °C / Inert atmosphere 3.1: N-chloro-succinimide; silver nitrate / acetonitrile / 0.08 h / 0 °C View Scheme |
3-Formylchromone
coumarandione
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1: sodium nitrite; dipotassium peroxodisulfate / acetone / 20 °C / Green chemistry 2: acetic acid; hydrogenchloride / water / Heating View Scheme |
Conditions | Yield |
---|---|
In toluene at 20℃; under 6000600 Torr; for 12h; Hetero Diels-Alder reaction; | 90% |
coumarandione
benzoyldiazomethane triphenylphosphazine
2-benzoylmethylenehydrazono-2,3-dihydro-3-benzofuranone
Conditions | Yield |
---|---|
In toluene at 20℃; | 87% |
Conditions | Yield |
---|---|
Stage #1: C25H20BrOP With n-butyllithium In tetrahydrofuran; hexane at 0℃; for 0.5h; Wittig Olefination; Stage #2: coumarandione In tetrahydrofuran; hexane at 0℃; for 5.5h; Heating; | 81% |
coumarandione
(2-hydroxy-phenyl)-acetic acid hydrazide
Conditions | Yield |
---|---|
With hydrazine hydrate for 0.25h; Heating; | 80% |
Conditions | Yield |
---|---|
In toluene at 20℃; | 76% |
benzofuran-2(3H)-one
coumarandione
(E)-[3,3']bibenzofuranylidene-2,2'-dione
Conditions | Yield |
---|---|
With phosphorus tribromide at 140℃; |
coumarandione
2-chloro-1-(2-methoxy-phenyl)-ethanone
sodium ethanolate
2-(2-methoxy-benzoyl)-benzofuran-3-carboxylic acid ethyl ester
Conditions | Yield |
---|---|
With ethanol |
coumarandione
2-chloro-1-(naphthalen-1-yl)ethan-1-one
Conditions | Yield |
---|---|
With ethanol; sodium ethanolate |
Conditions | Yield |
---|---|
With methanol; sodium methylate Erwaermen des Reaktionsprodukts mit wss.-aethanol. Natronlauge; |
coumarandione
1-(benzofuran-2-yl)-2-bromoethan-1-one
Conditions | Yield |
---|---|
With ethanol; sodium ethanolate |
coumarandione
acetic acid
aniline
(2-hydroxy-phenyl)-glyoxylic acid anilide
coumarandione
acetic acid
aniline
(2-hydroxy-phenyl)-phenylimino-acetic acid
Conditions | Yield |
---|---|
With ethanol; sodium ethanolate Erwaermen des Reaktionsgemisches mit Wasser; |
coumarandione
2-bromo-1-o-tolylethanone
Conditions | Yield |
---|---|
With ethanol; sodium ethanolate |
coumarandione
2-bromo-3'-methylacetophenone
2-m-toluoyl-benzofuran-3-carboxylic acid ethyl ester
Conditions | Yield |
---|---|
With ethanol; sodium ethanolate |
coumarandione
chloroacetic acid
(2-carboxymethoxy-phenyl)-glyoxylic acid
Conditions | Yield |
---|---|
With sodium hydroxide |
Conditions | Yield |
---|---|
With ethanol |
coumarandione
ethanol
aniline
(2-hydroxy-phenyl)-glyoxylic acid anilide
coumarandione
ethanol
aniline
(2-hydroxy-phenyl)-phenylimino-acetic acid
coumarandione
aniline
benzene
(2-hydroxy-phenyl)-glyoxylic acid anilide
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