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Dayang Chem (Hangzhou) Co.,Ltd.

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

Coumarandione

Cas:4732-72-3

Min.Order:1 Kilogram

FOB Price: $3.0

Type:Lab/Research institutions

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

2,3-Benzofurandione CAS NO.4732-72-3

Cas:4732-72-3

Min.Order:1 Metric Ton

FOB Price: $1.0 / 3.0

Type:Manufacturers

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

Benzofuran-2,3-dione CAS 4732-72-3

Cas:4732-72-3

Min.Order:1 Kilogram

FOB Price: $3.0 / 10.0

Type:Trading Company

inquiry

Shanghai Upbio Tech Co.,Ltd

1.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

2,3-Benzofurandione

Cas:4732-72-3

Min.Order:1 Gram

Negotiable

Type:Lab/Research institutions

inquiry

Qingdao Beluga Import and Export Co., LTD

Benzofuran-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

Benzofuran-2,3-dione CAS:4732-72-3

Cas:4732-72-3

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

2,3-Benzofurandione

Cas:4732-72-3

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

2,3-Benzofurandione

Cas:4732-72-3

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

2,3-Benzofurandione

Cas:4732-72-3

Min.Order:10 Gram

FOB Price: $100.0

Type:Lab/Research institutions

inquiry

SHANGHAI SYSTEAM BIOCHEM CO., LTD

We 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

2,3-Benzofurandione CAS NO.4732-72-3

Cas:4732-72-3

Min.Order:100 Gram

FOB Price: $100.0 / 2000.0

Type:Lab/Research institutions

inquiry

Jiangsu Qianyu Molecular Technology Co., LTD.

Our 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

In Bulk SupplyBenzofuran-2,3-dione

Cas:4732-72-3

Min.Order:0

Negotiable

Type:Trading Company

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

2,3-Benzofurandione CAS NO.4732-72-3

Cas:4732-72-3

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

2,3-Benzofurandione CAS NO.4732-72-3

Cas:4732-72-3

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

2,3-Benzofurandione CAS NO.4732-72-3

Cas:4732-72-3

Min.Order:1 Metric Ton

FOB Price: $1.5

Type:Trading Company

inquiry

SAGECHEM LIMITED

SAGECHEM 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

3-oxobenzofuran-2-one

Cas:4732-72-3

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

Golden Pharma Co., Limited

GOLDEN PHARMA CO.,LIMITED.is a professional pharmaceutical company,our team have more than 20years expereince in pharmaceutical production and sales. we are a professional technical enterprise specializing in the R & D, production,QA regulation

Benzofuran-2,3-dione

Cas:4732-72-3

Min.Order:1 Kilogram

Negotiable

Type:Other

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

2,3-Benzofurandione CAS NO.4732-72-3

Cas:4732-72-3

Min.Order:1 Metric Ton

FOB Price: $1.0

Type:Trading Company

inquiry

GIHI CHEMICALS CO.,LIMITED

Lower 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

2,3-Benzofurandione CAS NO.4732-72-3

Cas:4732-72-3

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

Hangzhou Dingyan Chem Co., Ltd

R & D enterprises have their own stock in stock Package:1kg Application:pharmaceutical intermediates

Benzofuran-2,3-dione

Cas:4732-72-3

Min.Order:0

Negotiable

Type:Manufacturers

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 Benzofuran-2,3-dione 1g

Cas:4732-72-3

Min.Order:1 bottle

Negotiable

Type:Lab/Research institutions

inquiry

Hangzhou J&H Chemical Co., Ltd.

J&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

Benzofuran-2,3-dione

Cas:4732-72-3

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

Henan Tianfu Chemical Co., Ltd.

1.Our services:A.Supply sampleB.The packing also can be according the customers` requirmentC.Any inquiries will be replied within 24 hoursD.we provide Commerical Invoice, Packing List, Bill of loading, COA , Health certificate and Origin certificate.

2,3-Benzofurandione

Cas:4732-72-3

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

Xian Changyue Biological Technology Co., Ltd.

best seller Application:API

Benzofuran-2,3-dione

Cas:4732-72-3

Min.Order:0

Negotiable

Type:Manufacturers

inquiry

Wuhan Circle Star Chem-medical Technology co.,Ltd.

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

Benzofuran-2,3-dione

Cas:4732-72-3

Min.Order:0

Negotiable

Type:Lab/Research institutions

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

2,3-Benzofurandione

Cas:4732-72-3

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

Hubei Langyou International Trading Co., Ltd

2,3-Benzofurandione CAS NO.4732-72-3 Application:2,3-Benzofurandione CAS NO.4732-72-3

2,3-Benzofurandione CAS NO.4732-72-3

Cas:4732-72-3

Min.Order:0

Negotiable

Type:Other

inquiry

DB BIOTECH CO., LTD

best seller Application:API

Benzofuran-2,3-dione

Cas:4732-72-3

Min.Order:0

Negotiable

Type:Trading Company

inquiry

Hangzhou Fandachem Co.,Ltd

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

Coumarandione cas 4732-72-3

Cas:4732-72-3

Min.Order:0

Negotiable

Type:Other

inquiry

Wuhan ZeShanCheng Biomedical Technology Co., Ltd.

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

Benzofuran-2,3-dione

Cas:4732-72-3

Min.Order:0

Negotiable

Type:Trading Company

inquiry

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

Benzofuran-2,3-dione

Cas:4732-72-3

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

Taixing Hehao Chemical Materials Co.,Ltd

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

Benzofuran-2,3-dione

Cas:4732-72-3

Min.Order:0

Negotiable

Type:Other

inquiry

Synthetic route

benzofuran-2,3-dione 2-oxime

benzofuran-2,3-dione 2-oxime

coumarandione
4732-72-3

coumarandione

Conditions
ConditionsYield
With hydrogenchloride; acetic acid In water Heating;87%
spiro[benzofuran-2(3H),2'-[1,3]dithian]-3-one

spiro[benzofuran-2(3H),2'-[1,3]dithian]-3-one

coumarandione
4732-72-3

coumarandione

Conditions
ConditionsYield
With N-chloro-succinimide; silver nitrate In acetonitrile at 0℃; for 0.0833333h;50%
indole-2,3-dione
91-56-5

indole-2,3-dione

coumarandione
4732-72-3

coumarandione

Conditions
ConditionsYield
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
17392-16-4

(2-hydroxyphenyl)oxoacetic acid

coumarandione
4732-72-3

coumarandione

Conditions
ConditionsYield
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
22856-49-1

2,2'-bi-benzofuranylidene-3,3'-dione

coumarandione
4732-72-3

coumarandione

Conditions
ConditionsYield
With chromic acid
o-hydroxyacetophenone
118-93-4

o-hydroxyacetophenone

coumarandione
4732-72-3

coumarandione

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: SeO2
2: Ac2O / Heating
View Scheme
2-trifluoromethylsulfonyloxybenzoic acid ethyl ester
179538-97-7

2-trifluoromethylsulfonyloxybenzoic acid ethyl ester

coumarandione
4732-72-3

coumarandione

Conditions
ConditionsYield
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
2-hydroxy-benzoic acid ethyl ester
118-61-6

2-hydroxy-benzoic acid ethyl ester

coumarandione
4732-72-3

coumarandione

Conditions
ConditionsYield
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
17422-74-1

3-Formylchromone

coumarandione
4732-72-3

coumarandione

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: sodium nitrite; dipotassium peroxodisulfate / acetone / 20 °C / Green chemistry
2: acetic acid; hydrogenchloride / water / Heating
View Scheme
coumarandione
4732-72-3

coumarandione

1-methoxybuta-1,3-diene
3036-66-6

1-methoxybuta-1,3-diene

C14H14O3

C14H14O3

Conditions
ConditionsYield
In toluene at 20℃; under 6000600 Torr; for 12h; Hetero Diels-Alder reaction;90%
coumarandione
4732-72-3

coumarandione

benzoyldiazomethane triphenylphosphazine
22610-14-6

benzoyldiazomethane triphenylphosphazine

2-benzoylmethylenehydrazono-2,3-dihydro-3-benzofuranone
540535-89-5

2-benzoylmethylenehydrazono-2,3-dihydro-3-benzofuranone

Conditions
ConditionsYield
In toluene at 20℃;87%
coumarandione
4732-72-3

coumarandione

C25H20BrOP

C25H20BrOP

2-(5-bromo-2-hydroxybenzylidene)benzofuran-3(2H)-one

2-(5-bromo-2-hydroxybenzylidene)benzofuran-3(2H)-one

Conditions
ConditionsYield
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
4732-72-3

coumarandione

(2-hydroxy-phenyl)-acetic acid hydrazide
22446-43-1

(2-hydroxy-phenyl)-acetic acid hydrazide

Conditions
ConditionsYield
With hydrazine hydrate for 0.25h; Heating;80%
coumarandione
4732-72-3

coumarandione

(1-methyl-2-oxo-3-indolinylidene)triphenylphosphazine
3265-22-3

(1-methyl-2-oxo-3-indolinylidene)triphenylphosphazine

C17H11N3O3

C17H11N3O3

Conditions
ConditionsYield
In toluene at 20℃;76%
benzofuran-2(3H)-one
553-86-6

benzofuran-2(3H)-one

coumarandione
4732-72-3

coumarandione

(E)-[3,3']bibenzofuranylidene-2,2'-dione
80360-47-0

(E)-[3,3']bibenzofuranylidene-2,2'-dione

Conditions
ConditionsYield
With phosphorus tribromide at 140℃;
coumarandione
4732-72-3

coumarandione

2-chloro-1-(2-methoxy-phenyl)-ethanone
53688-19-0

2-chloro-1-(2-methoxy-phenyl)-ethanone

sodium ethanolate
141-52-6

sodium ethanolate

2-(2-methoxy-benzoyl)-benzofuran-3-carboxylic acid ethyl ester
860691-35-6

2-(2-methoxy-benzoyl)-benzofuran-3-carboxylic acid ethyl ester

Conditions
ConditionsYield
With ethanol
coumarandione
4732-72-3

coumarandione

2-chloro-1-(naphthalen-1-yl)ethan-1-one
76469-33-5

2-chloro-1-(naphthalen-1-yl)ethan-1-one

2-[1]naphthoyl-benzofuran-3-carboxylic acid ethyl ester

2-[1]naphthoyl-benzofuran-3-carboxylic acid ethyl ester

Conditions
ConditionsYield
With ethanol; sodium ethanolate
coumarandione
4732-72-3

coumarandione

2-(2-bromoacetyl)benzoic acid methyl ester
7460-55-1

2-(2-bromoacetyl)benzoic acid methyl ester

2-(2-carboxy-benzoyl)-benzofuran-3-carboxylic acid

2-(2-carboxy-benzoyl)-benzofuran-3-carboxylic acid

Conditions
ConditionsYield
With methanol; sodium methylate Erwaermen des Reaktionsprodukts mit wss.-aethanol. Natronlauge;
coumarandione
4732-72-3

coumarandione

1-(benzofuran-2-yl)-2-bromoethan-1-one
23489-36-3

1-(benzofuran-2-yl)-2-bromoethan-1-one

2-(benzofuran-2-carbonyl)-benzofuran-3-carboxylic acid ethyl ester

2-(benzofuran-2-carbonyl)-benzofuran-3-carboxylic acid ethyl ester

Conditions
ConditionsYield
With ethanol; sodium ethanolate
coumarandione
4732-72-3

coumarandione

acetic acid
64-19-7

acetic acid

aniline
62-53-3

aniline

(2-hydroxy-phenyl)-glyoxylic acid anilide
34073-43-3

(2-hydroxy-phenyl)-glyoxylic acid anilide

coumarandione
4732-72-3

coumarandione

acetic acid
64-19-7

acetic acid

aniline
62-53-3

aniline

(2-hydroxy-phenyl)-phenylimino-acetic acid
52529-40-5

(2-hydroxy-phenyl)-phenylimino-acetic acid

coumarandione
4732-72-3

coumarandione

ethyl bromoacetate
105-36-2

ethyl bromoacetate

1-benzofuran-2,3-dicarboxylic acid
131-76-0

1-benzofuran-2,3-dicarboxylic acid

Conditions
ConditionsYield
With ethanol; sodium ethanolate Erwaermen des Reaktionsgemisches mit Wasser;
coumarandione
4732-72-3

coumarandione

2-bromo-1-o-tolylethanone
51012-65-8

2-bromo-1-o-tolylethanone

2-o-toluoyl-benzofuran-3-carboxylic acid ethyl ester

2-o-toluoyl-benzofuran-3-carboxylic acid ethyl ester

Conditions
ConditionsYield
With ethanol; sodium ethanolate
coumarandione
4732-72-3

coumarandione

2-bromo-3'-methylacetophenone
51012-64-7

2-bromo-3'-methylacetophenone

2-m-toluoyl-benzofuran-3-carboxylic acid ethyl ester
109614-97-3

2-m-toluoyl-benzofuran-3-carboxylic acid ethyl ester

Conditions
ConditionsYield
With ethanol; sodium ethanolate
coumarandione
4732-72-3

coumarandione

chloroacetic acid
79-11-8

chloroacetic acid

(2-carboxymethoxy-phenyl)-glyoxylic acid
93334-77-1

(2-carboxymethoxy-phenyl)-glyoxylic acid

Conditions
ConditionsYield
With sodium hydroxide
coumarandione
4732-72-3

coumarandione

sodium ethanolate
141-52-6

sodium ethanolate

1,3-Dichloroacetone
534-07-6

1,3-Dichloroacetone

bis-(3-ethoxycarbonyl-benzofuran-2-yl)-ketone

bis-(3-ethoxycarbonyl-benzofuran-2-yl)-ketone

Conditions
ConditionsYield
With ethanol
coumarandione
4732-72-3

coumarandione

ethanol
64-17-5

ethanol

aniline
62-53-3

aniline

(2-hydroxy-phenyl)-glyoxylic acid anilide
34073-43-3

(2-hydroxy-phenyl)-glyoxylic acid anilide

coumarandione
4732-72-3

coumarandione

ethanol
64-17-5

ethanol

aniline
62-53-3

aniline

(2-hydroxy-phenyl)-phenylimino-acetic acid
52529-40-5

(2-hydroxy-phenyl)-phenylimino-acetic acid

coumarandione
4732-72-3

coumarandione

aniline
62-53-3

aniline

benzene
71-43-2

benzene

(2-hydroxy-phenyl)-glyoxylic acid anilide
34073-43-3

(2-hydroxy-phenyl)-glyoxylic acid anilide

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