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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

Coumachlor

Cas:81-82-3

Min.Order:1 Kilogram

FOB Price: $3.0

Type:Lab/Research institutions

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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 3-(1-(4-Chloorfenyl)-3-Oxo-Butyl)-4-Hydroxy-Cumarine supplier in China

Cas:81-82-3

Min.Order:1 Kilogram

Negotiable

Type:Manufacturers

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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

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

Manufacturer supply CAS 81-82-3 with best quality

Cas:81-82-3

Min.Order:1 Kilogram

FOB Price: $139.0 / 210.0

Type:Trading Company

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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

2H-1-Benzopyran-2-one,3-[1-(4-chlorophenyl)-3-oxobutyl]-4-hydroxy-

Cas:81-82-3

Min.Order:1 Gram

Negotiable

Type:Lab/Research institutions

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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

COUMACHLOR Agricultural and environmental standards

Cas:81-82-3

Min.Order:1 Kilogram

FOB Price: $45.0 / 60.0

Type:Trading Company

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Changchun Artel lmport and Export trade company

Product Detail Minimum Order Qty. 10 Gram

Coumachlor CAS NO.81-82-3 CAS NO.81-82-3

Cas:81-82-3

Min.Order:20 Metric Ton

Negotiable

Type:Trading Company

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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

2H-1-Benzopyran-2-one,3-[1-(4-chlorophenyl)-3-oxobutyl]-4-hydroxy-

Cas:81-82-3

Min.Order:0

Negotiable

Type:Lab/Research institutions

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

2H-1-Benzopyran-2-one,3-[1-(4-chlorophenyl)-3-oxobutyl]-4-hydroxy-

Cas:81-82-3

Min.Order:0

Negotiable

Type:Lab/Research institutions

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Shanghai Massive Chemical Technology Co., Ltd.

Massive Chemical is certified with ISO9001 and ISO14001 manufacturer for this product. We will offer all documents as requirement for the materials which includes, Certificate of Analysis, Material Safety Data Sheet, and Method of Analysis and

COUMACHLOR

Cas:81-82-3

Min.Order:1 Gram

FOB Price: $1.0

Type:Lab/Research institutions

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Hangzhou Huarong Pharm Co., Ltd.

We Huarong Pharm can provide Customized Synthesis & Process R&D & APIs and intermediates Production & Quality Research & Registration Application, especially our GMP validation service which complies with SFDA, FDA, WHO and EU EMPA. O

COUMACHLOR

Cas:81-82-3

Min.Order:0

Negotiable

Type:Trading Company

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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

Coumachlor CAS NO.81-82-3 CAS NO.81-82-3 CAS NO.81-82-3

Cas:81-82-3

Min.Order:1 Metric Ton

FOB Price: $7.0 / 8.0

Type:Trading Company

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Hunan chemfish Pharmaceutical co.,Ltd

Appearance:95%+ Package:R&D,Pilot run Transportation:per client require Port:Express ,Air, Sea

COUMACHLOR

Cas:81-82-3

Min.Order:0

Negotiable

Type:Manufacturers

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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

Coumachlor

Cas:81-82-3

Min.Order:1 Kilogram

Negotiable

Type:Other

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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

COUMACHLOR

Cas:81-82-3

Min.Order:0

Negotiable

Type:Manufacturers

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Aecochem Corp.

Our clients, like BASF,CHEMO,Brenntag,ASR,Evonik,Merck and etc.Appearance:COA Storage:in stock Application:MSDS/TDS

3-(1-(4-Chloorfenyl)-3-Oxo-Butyl)-4-Hydroxy-Cumarine

Cas:81-82-3

Min.Order:0

Negotiable

Type:Manufacturers

inquiry

Antimex Chemical Limied

3-(1-(4-Chloorfenyl)-3-Oxo-Butyl)-4-Hydroxy-CumarineAppearance:white powder Storage:Keep away of light,cool place Package:25kg/drum;200kg/drum Application:Agrochemical Intermediate Transportation:Sea/air/courier

3-(1-(4-Chloorfenyl)-3-Oxo-Butyl)-4-Hydroxy-Cumarine

Cas:81-82-3

Min.Order:0

Negotiable

Type:Lab/Research institutions

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Hangzhou Fandachem Co.,Ltd

FAMARINAppearance:white crystalline powder Storage:Store in dry, dark and ventilated place Package:25KG drum Application:intermediate Transportation:by air, by sea, by express

FAMARIN

Cas:81-82-3

Min.Order:0

Negotiable

Type:Other

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Shanghai Chinqesen Biotechnology Co., Ltd.

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

81-82-3

Cas:81-82-3

Min.Order:0

Negotiable

Type:Trading Company

inquiry

Chemlyte Solutions

Stock products, own laboratory Package:Grams, Kilograms Application:For R&D Transportation:According to customer request Port:Shanghai

coumachlor

Cas:81-82-3

Min.Order:0

Negotiable

Type:Other

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Hunan Russell Chemicals Technology Co.,Ltd

high purity lowest priceAppearance:solid or liquid Storage:in sealed air resistant place Package:Foil bag; Drum; Plastic bottle Application:Pharma;Industry;Agricultural Transportation:by sea or air Port:any port in China

COUMACHLOR 81-82-3

Cas:81-82-3

Min.Order:0

Negotiable

Type:Trading Company

inquiry

Chemsigma International Co.,Ltd.

bulk?production Application:Pharmaceutical intermediates

COUMACHLOR

Cas:81-82-3

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

Shenzhen Foris Technology Co. LTD

high purity lowest priceAppearance:solid or liquid Storage:in sealed air resistant place Package:Foil bag; Drum; Plastic bottle Application:Pharma;Industry;Agricultural Transportation:by sea or air Port:any port in China

COUMACHLOR 81-82-3

Cas:81-82-3

Min.Order:0

Negotiable

Type:Lab/Research institutions

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

COUMACHLOR

Cas:81-82-3

Min.Order:0

Negotiable

Type:Trading Company

inquiry

HENAN SUNLAKE ENTERPRISE CORPORATION

Henan Sunlake Enterprise Corporation Our Advantages 1, Any inquiry about ch

Best quality COUMACHLOR 81-82-3

Cas:81-82-3

Min.Order:1 Kilogram

Negotiable

Type:Trading Company

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Jilin haofei import and export trade Co.,Ltd

Price, service, company and transport advantage: 1. Best service, place of origin China, high quality, and reasonable price. 2. It's customers' right to choose the package (EMS, DHL, FEDEX, UPS). 3. It's customers' right

Coumachlor CAS NO.81-82-3 CAS NO.81-82-3 CAS NO.81-82-3

Cas:81-82-3

Min.Order:0

Negotiable

Type:Trading Company

inquiry

Watson International Ltd

Watson International Ltd' has a very strong R&D and technical capacity supported by FCAD's platform. The subsidiaries under FCAD Group have accumulated much know-how of different fine chemical branches. For example, Apnoke Scientific L

Chlorowarfarin

Cas:81-82-3

Min.Order:1 Gram

Negotiable

Type:Lab/Research institutions

inquiry

Xiamen BaiFuchem Co.,Ltd

BaiFuChem is a Professional chemical raw material supplier in China, our main products include Biochemical , Pharma Intermediate and Organic chemical etc. BaiFuChem have wealth of products,experience , expertise and state-of-the-art

High purity 3-(1-(4-Chloorfenyl)-3-Oxo-Butyl)-4-Hydroxy-Cumarine

Cas:81-82-3

Min.Order:1 Kilogram

Negotiable

Type:Other

inquiry

Shanghai Hanhong Scientific Co.,Ltd.

factory,reasonable price Appearance:detailed see specifications Storage:Store in dry, dark and ventilated place. Package:according to the clients requirement Application:pharmaceutical intermediates Transportation:by courier,air or sea Port:S

COUMACHLOR81-82-3

Cas:81-82-3

Min.Order:0

Negotiable

Type:Trading Company

inquiry

Shanghai united Scientific Co.,Ltd.

United Scientific Company Located in Shanghai of China , is a competitive player in the global specialty and fine chemical market. Fenghua has both the expertise and flexibility to produce a wide range of chemicals. Focusing on developing the innovat

2H-1-Benzopyran-2-one,3-[1-(4-chlorophenyl)-3-oxobutyl]-4-hydroxy-

Cas:81-82-3

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

Synthetic route

4-hydroxy[1]benzopyran-2-one
1076-38-6

4-hydroxy[1]benzopyran-2-one

(3E)-4-(4-chlorophenyl)-3-buten-2-one
30626-03-0

(3E)-4-(4-chlorophenyl)-3-buten-2-one

coumachlor
81-82-3

coumachlor

Conditions
ConditionsYield
With polystyrene-divinylbenzene support prepared with 1-chlorodecane as porogen with immobilized 1,5,7-triazabicyclo[4.4.0]dec-5-ene at 100℃; for 96h; Reagent/catalyst; Time; Michael Addition; Green chemistry;96%
4-(4-chlorophenyl)-3-buten-2-one
3160-40-5

4-(4-chlorophenyl)-3-buten-2-one

4-hydroxy[1]benzopyran-2-one
1076-38-6

4-hydroxy[1]benzopyran-2-one

coumachlor
81-82-3

coumachlor

Conditions
ConditionsYield
With N-benzyl-N,N,N-triethylammonium chloride In water for 14h; Heating;75%
Michael Addition;
4-hydroxy[1]benzopyran-2-one
1076-38-6

4-hydroxy[1]benzopyran-2-one

2-Methoxypropene
116-11-0

2-Methoxypropene

4-chlorobenzaldehyde
104-88-1

4-chlorobenzaldehyde

coumachlor
81-82-3

coumachlor

Conditions
ConditionsYield
Stage #1: 4-hydroxy[1]benzopyran-2-one; 2-Methoxypropene; 4-chlorobenzaldehyde With ethylenediamine diacetic acid In 1,4-dioxane at 90℃; tandem Knoevenagel-hetero-Diels-Alder reaction;
Stage #2: With hydrogenchloride; silica gel In water; trifluoroacetic acid at 20℃;
coumachlor
81-82-3

coumachlor

(1R,2S,5R)-menthyl chloroformate
14602-86-9

(1R,2S,5R)-menthyl chloroformate

Carbonic acid 3-[1-(4-chloro-phenyl)-3-oxo-butyl]-2-oxo-2H-chromen-4-yl ester (1R,2S,5R)-2-isopropyl-5-methyl-cyclohexyl ester

Carbonic acid 3-[1-(4-chloro-phenyl)-3-oxo-butyl]-2-oxo-2H-chromen-4-yl ester (1R,2S,5R)-2-isopropyl-5-methyl-cyclohexyl ester

Conditions
ConditionsYield
With TEA In 1,2-dichloro-ethane for 0.5h; Ambient temperature;100%
coumachlor
81-82-3

coumachlor

3-nitro-benzaldehyde
99-61-6

3-nitro-benzaldehyde

4-hydroxy-3-[1-(4-chloro-phenyl)-5-(3-nitro-phenyl)-3-oxo-pent-4-enyl]-chromen-2-one
1253372-74-5

4-hydroxy-3-[1-(4-chloro-phenyl)-5-(3-nitro-phenyl)-3-oxo-pent-4-enyl]-chromen-2-one

Conditions
ConditionsYield
With sodium hydroxide In water at 20℃;95%
coumachlor
81-82-3

coumachlor

3-fluoro-3-<1-(4-chlorophenyl)-3-oxobutyl>-2H-benzopyran-2,4-dione
141293-11-0, 141293-12-1

3-fluoro-3-<1-(4-chlorophenyl)-3-oxobutyl>-2H-benzopyran-2,4-dione

Conditions
ConditionsYield
With N-fluorobis<(trifluoromethyl)sulfonyl>imide In chloroform; water at 35℃; for 0.25h;90%
coumachlor
81-82-3

coumachlor

4-chlorobenzaldehyde
104-88-1

4-chlorobenzaldehyde

4-hydroxy-3-[1,5-bis(4-chloro-phenyl)-3-oxo-pent-4-enyl]-chromen-2-one
1253372-72-3

4-hydroxy-3-[1,5-bis(4-chloro-phenyl)-3-oxo-pent-4-enyl]-chromen-2-one

Conditions
ConditionsYield
With sodium hydroxide In water at 20℃;90%
coumachlor
81-82-3

coumachlor

4-methoxy-benzaldehyde
123-11-5

4-methoxy-benzaldehyde

4-hydroxy-3-[1-(4-chloro-phenyl)-5-(4-methoxy-phenyl)-3-oxo-pent-4-enyl]-chromen-2-one
1253372-73-4

4-hydroxy-3-[1-(4-chloro-phenyl)-5-(4-methoxy-phenyl)-3-oxo-pent-4-enyl]-chromen-2-one

Conditions
ConditionsYield
With sodium hydroxide In water at 20℃;90%
coumachlor
81-82-3

coumachlor

benzaldehyde
100-52-7

benzaldehyde

4-hydroxy-3-[1-(4-chloro-phenyl)-3-oxo-5-phenyl-pent-4-enyl]-chromen-2-one
1253372-71-2

4-hydroxy-3-[1-(4-chloro-phenyl)-3-oxo-5-phenyl-pent-4-enyl]-chromen-2-one

Conditions
ConditionsYield
With sodium hydroxide In water at 20℃;88%
furfural
98-01-1

furfural

coumachlor
81-82-3

coumachlor

4-hydroxy-3-[1-(4-chloro-phenyl)-5-furan-2-yl-3-oxo-pent-4-enyl]-chromen-2-one
1253372-75-6

4-hydroxy-3-[1-(4-chloro-phenyl)-5-furan-2-yl-3-oxo-pent-4-enyl]-chromen-2-one

Conditions
ConditionsYield
With sodium hydroxide In water at 20℃;85%
coumachlor
81-82-3

coumachlor

3-{1-(4-Chloro-phenyl)-3-[(E)-hydroxyimino]-butyl}-4-hydroxy-chromen-2-one

3-{1-(4-Chloro-phenyl)-3-[(E)-hydroxyimino]-butyl}-4-hydroxy-chromen-2-one

Conditions
ConditionsYield
With pyridine; sodium hydroxide; hydroxylamine hydrochloride In ethanol 1) 12 h, 2) reflux, 6 h;74%
coumachlor
81-82-3

coumachlor

dimethylsulfoxonium methylide
70775-39-2, 5367-24-8

dimethylsulfoxonium methylide

(2S,4R)-4-(4-Chloro-phenyl)-2-hydroxymethyl-2-methyl-3,4-dihydro-2H-pyrano[3,2-c]chromen-5-one

(2S,4R)-4-(4-Chloro-phenyl)-2-hydroxymethyl-2-methyl-3,4-dihydro-2H-pyrano[3,2-c]chromen-5-one

(2R,4R)-4-(4-Chloro-phenyl)-2-hydroxymethyl-2-methyl-3,4-dihydro-2H-pyrano[3,2-c]chromen-5-one

(2R,4R)-4-(4-Chloro-phenyl)-2-hydroxymethyl-2-methyl-3,4-dihydro-2H-pyrano[3,2-c]chromen-5-one

(2R,4R)-4-(4-Chloro-phenyl)-2-hydroxymethyl-2-methyl-3,4-dihydro-2H-pyrano[2,3-b]chromen-5-one

(2R,4R)-4-(4-Chloro-phenyl)-2-hydroxymethyl-2-methyl-3,4-dihydro-2H-pyrano[2,3-b]chromen-5-one

(2S,4R)-4-(4-Chloro-phenyl)-2-hydroxymethyl-2-methyl-3,4-dihydro-2H-pyrano[2,3-b]chromen-5-one

(2S,4R)-4-(4-Chloro-phenyl)-2-hydroxymethyl-2-methyl-3,4-dihydro-2H-pyrano[2,3-b]chromen-5-one

Conditions
ConditionsYield
With sodium hydrogencarbonate 1.) DMSO, THF, 2.) H2O, 5 h; Yield given. Multistep reaction. Yields of byproduct given;
coumachlor
81-82-3

coumachlor

β-cyclodextrin

β-cyclodextrin

complex coumachlor with β-cyclodextrin

complex coumachlor with β-cyclodextrin

Conditions
ConditionsYield
In ethanol; water for 0.333333h; pH=9; complexation; sonication;
coumachlor
81-82-3

coumachlor

A

(R)-3-(1-(4-chlorophenyl)-3-oxobutyl)-4-hydroxy-2H-chromen-2-one
81-82-3, 70888-76-5, 95041-39-7, 95271-89-9

(R)-3-(1-(4-chlorophenyl)-3-oxobutyl)-4-hydroxy-2H-chromen-2-one

B

(S)-3-(1-(4-chlorophenyl)-3-oxobutyl)-4-hydroxy-2H-chromen-2-one
81-82-3, 95041-39-7, 95271-89-9, 70888-76-5

(S)-3-(1-(4-chlorophenyl)-3-oxobutyl)-4-hydroxy-2H-chromen-2-one

Conditions
ConditionsYield
With teicoplanin In methanol; water Product distribution; Further Variations:; Reagents; pH-values; Solvents;
With N-3,5-dimethylphenylcarbamoyl-derivatized cyclofructan-6 column In n-heptane; isopropyl alcohol; trifluoroacetic acid at 20℃; Resolution of racemate;
With chiral stationary phase including 3,5-dimethylphenyl-functionalized CF7 In ethanol; n-heptane; trifluoroacetic acid at 20℃; Purification / work up;
coumachlor
81-82-3

coumachlor

carboxymethylhydroxylamine hydrochloride

carboxymethylhydroxylamine hydrochloride

C21H18ClNO6

C21H18ClNO6

Conditions
ConditionsYield
With pyridine at 70℃; for 6h;75 mg

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