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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

6-(5-Chloro-2-pyridyl)-5H-pyrrolo[3,4-b]pyrazine-5,7(6H)-dione Manufacturer/High quality/Best price/In stock

Cas:43200-82-4

Min.Order:1 Kilogram

FOB Price: $3.0

Type:Lab/Research institutions

inquiry

Henan Allgreen Chemical Co.,Ltd

high quality Appearance:White or off white powder Storage:Sealed, dry, microtherm , avoid light and smell Package:According to the demand of customer Application:Pharmaceutical intermediates Transportation:by air or by sea Port:shanghai

6-(5-Chloro-2-pyridyl)-5H-pyrrolo[3,4-b]pyrazine-5,7(6H)-dione

Cas:43200-82-4

Min.Order:1 Kilogram

Negotiable

Type:Manufacturers

inquiry

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

Chemwill Asia Co., Ltd.

Our main production base is located in Xuzhou industry park. We are certified both to the ISO 9001 and ISO 14001 Standards, have a safety management system in place.Our R&D team masters core technology for process-design of target building block

6-(5-Chloro-2-pyridyl)-5H-pyrrolo[3,4-b]pyrazine-5,7(6H)-dione

Cas:43200-82-4

Min.Order:5 Kiloliter

FOB Price: $1.2 / 5.0

Type:Manufacturers

inquiry

Henan Tianfu Chemical Co., Ltd.

Our company was built in 2009 with an ISO certificate.In the past 5 years, we have grown up as a famous fine chemicals supplier in China and we had established stable business relationships with Samsung,LG,Merck,Thermo Fisher Scientific and so on.O

high quality 6-(5-Chloro-2-pyridyl)-5H-pyrrolo[3,4-b]pyrazine-5,7(6H)-dione

Cas:43200-82-4

Min.Order:1 Gram

FOB Price: $1.0

Type:Lab/Research institutions

inquiry

Hebei Nengqian Chemical Import and Export Co., LTD

Our advantages: 1. All inquiries will be replied within 12 hours. 2. Dedication to quality, supply & service. 3. Strictly on selecting raw materials. 4. Reasonable & competitive price, fast lead time. 5. Sample is available for your eva

6-(5-Chloro-2-pyridyl)-5H-pyrrolo[3,4-b]pyrazine-5,7(6H)-dione

Cas:43200-82-4

Min.Order:1 Kilogram

FOB Price: $9.0 / 99.0

Type:Trading Company

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 43200-82-4 with competitive price

Cas:43200-82-4

Min.Order:1 Kilogram

FOB Price: $139.0 / 210.0

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

5H-Pyrrolo[3,4-b]pyrazine-5,7(6H)-dione,6-(5-chloro-2-pyridinyl)- 43200-82-4

Cas:43200-82-4

Min.Order:1 Kilogram

Negotiable

Type:Lab/Research institutions

inquiry

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,

6-(5-Chloro-2-pyridyl)-5H-pyrrolo[3,4-b]pyrazine-5,7(6H)-dione 43200-82-4

Cas:43200-82-4

Min.Order:1 Kilogram

FOB Price: $675.0 / 689.0

Type:Trading Company

inquiry

Qingdao Beluga Import and Export Co., LTD

6-(5-Chloro-2-pyridyl)-5H-pyrrolo[3,4-b]pyrazine-5,7(6H)-dione CAS:43200-82-4 Qingdao Belugas Import and Export Co., Ltd. is a scientific and technological company integrating research and development, production and trade of chemical intermediates,

6-(5-Chloro-2-pyridyl)-5H-pyrrolo[3,4-b]pyrazine-5,7(6H)-dione CAS:43200-82-4

Cas:43200-82-4

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

5H-Pyrrolo[3,4-b]pyrazine-5,7(6H)-dione,6-(5-chloro-2-pyridinyl)-

Cas:43200-82-4

Min.Order:1 Kilogram

Negotiable

Type:Lab/Research institutions

inquiry

Lonwin Chemical Group Limited

Pharmaceutical Grade CAS 43200-82-4 with competitive price CAS: 43200-82-4 Specificatio Category Pharmaceutical Raw Materials, Fine Chemicals, Bulk drug Standard Medical standard Shelf life 2 years St

Factory supply Pharmaceutical Grade CAS 43200-82-4 with competitive price

Cas:43200-82-4

Min.Order:1 Kilogram

FOB Price: $100.0 / 150.0

Type:Other

inquiry

Afine Chemicals Limited

Company Introduction 1. Established in 2005, with two independent business divisions: Fine chemicals division; Pharmaceutical division. 2. Main product: Optical brightener Textile auxiliary Dye stuff Pigments

6-(5-CHLORO-2-PIPERIDINYL)-5H-PYRAZINE-5,7(6H,7H)-DIONE CAS 43200-82-4

Cas:43200-82-4

Min.Order:1 Gram

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

5H-Pyrrolo[3,4-b]pyrazine-5,7(6H)-dione,6-(5-chloro-2-pyridinyl)-

Cas:43200-82-4

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

High quality 6-(5-Chloro-2-Piperidinyl)-5H-Pyrazine-5,7(6H,7H)-Dione

Cas:43200-82-4

Min.Order:10 Gram

FOB Price: $100.0

Type:Lab/Research institutions

inquiry

Xiamen Jenny Chemical Technology Co., Ltd.

GMP standard, high purity, competitive price, in stock 1. Quick Response: within 6 hours after receiving your email. 2. Quality Guarantee: All products are strictly tested by our QC, confirmed by QA, and approved by a third-party lab in China, USA,

6-(5-Chloro-2-pyridyl)-5H-pyrrolo[3;4-b]pyrazine-5;7(6H)-dione

Cas:43200-82-4

Min.Order:1 Milligram

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

6-(5-chloro-2-pyridyl)-5H-pyrrolo[3,4-b]pyrazine-5,7(6H)-dione CAS 43200-82-4

Cas:43200-82-4

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

6-(5-chloro-2-pyridyl)-5H-pyrrolo[3,4-b]pyrazine-5,7(6H)-dione CAS 43200-82-4

Cas:43200-82-4

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

6-(5-chloro-2-pyridyl)-5H-pyrrolo[3,4-b]pyrazine-5,7(6H)-dione CAS 43200-82-4

Cas:43200-82-4

Min.Order:1 Metric Ton

FOB Price: $1.5

Type:Trading Company

inquiry

Hunan chemfish Pharmaceutical co.,Ltd

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

6-(5-chloro-2-pyridyl)-5H-pyrrolo[3,4-b]pyrazine-5,7(6H)-dione

Cas:43200-82-4

Min.Order:0

Negotiable

Type:Manufacturers

inquiry

Shanghai Massive Chemical Technology Co., Ltd.

Shanghai Massive Chemical Technology Co., Ltd. is engaged in development, production and marketing Specialty Chemicals to satisfy the changing needs of the chemical industry. We specialize in manufacturing high quality of Advanced Intermediates, Sp

6-(5-Chloro-2-pyridyl)-5H-pyrrolo[3,4-b]pyrazine-5,7(6H)-dione

Cas:43200-82-4

Min.Order:1 Gram

Negotiable

Type:Lab/Research institutions

inquiry

Suzhou Health Chemicals Co., Ltd.

High quality,stable supply chain.Appearance:white/off-white or light yellow Storage:Store in cool and dry place, keep away from strong light and heat. Package:aluminum bottle,glass bottle,PTFE bottle,cardboard drum Application:This product can be use

6-(5-Chloro-2-pyridyl)-5H-pyrrolo[3,4-b]pyrazine-5,7(6H)-dione

Cas:43200-82-4

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

HANGZHOU YUNUO CHEMICAL CO.,LTD

Superior quality, moderate price & quick delivery. Appearance:white powder Storage:stored in a cool, dry and ventilated place to provent sun and rain Package:25kg/drum, or as per your request. Application:For medicine , pesticide intermedia

6-(5-Chloro-2-pyridyl)-5H-pyrrolo[3,4-b]pyrazine-5,7(6H)-dione

Cas:43200-82-4

Min.Order:1 Kilogram

Negotiable

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

6-(5-chloro-2-pyridyl)-5H-pyrrolo[3,4-b]pyrazine-5,7(6H)-dione CAS 43200-82-4

Cas:43200-82-4

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

6-(5-Chloro-2-pyridyl)-5H-pyrrolo(3,4-b)pyrazine-5,7(6H)-dio

Cas:43200-82-4

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

Kono Chem Co.,Ltd

high purity lowest priceAppearance:solid or liquid Storage:in sealed air resistant place Package:drum and bag Application:for pharma use Transportation:by sea or air Port:Beijing or Guangzhou

6-(5-chloro-2-pyridyl)-5H-pyrrolo[3,4-b]pyrazine-5,7(6H)-dio...

Cas:43200-82-4

Min.Order:0

Negotiable

Type:Other

inquiry

JINHUA HUAYI CHEMICAL CO., LTD.

Jinhua huayi chemical co., ltd. is dedicated to the development, production and marketing of chemicals. On the basis of equality and mutual benefit, and under the principle of customer first, credit first, quality first, we are ready to join hands

6-(5-Chloro-2-Pyridyl)-5H-Pyrrolo[3,4-B]Pyrazine-5,7(6H)-Dione

Cas:43200-82-4

Min.Order:100 Gram

Negotiable

Type:Lab/Research institutions

inquiry

Aecochem Corp.

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

6-(5-Chloro-2-Piperidinyl)-5H-Pyrazine-5,7(6H,7H)-Dione

Cas:43200-82-4

Min.Order:0

Negotiable

Type:Manufacturers

inquiry

Xian Changyue Biological Technology Co., Ltd.

best seller Application:API

6-(5-Chloro-2-pyridyl)-5H-pyrrolo[3,4-b]pyrazine-5,7(6H)-dione

Cas:43200-82-4

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

5H-Pyrrolo[3,4-b]pyrazine-5,7(6H)-dione,6-(5-chloro-2-pyridinyl)-

Cas:43200-82-4

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

Synthetic route

bis(trichloromethyl) carbonate
32315-10-9

bis(trichloromethyl) carbonate

3-((5-chloropyridin-2-yl)carbamoyl)pyrazine-2-carboxylic acid
43200-83-5

3-((5-chloropyridin-2-yl)carbamoyl)pyrazine-2-carboxylic acid

6-(5-chloro-2-pyridyl)-5,7-dioxo-6,7-dihydro-5H-pyrrolo(3,4-b)pyrazine
43200-82-4

6-(5-chloro-2-pyridyl)-5,7-dioxo-6,7-dihydro-5H-pyrrolo(3,4-b)pyrazine

Conditions
ConditionsYield
With Triphenylphosphine oxide In dichloromethane at 20℃; for 0.0833333h; Temperature; Concentration;98.5%
5-chloro-2-pyridylamine
1072-98-6

5-chloro-2-pyridylamine

2,3-pyrazinedicarboxylic anhydride
4744-50-7

2,3-pyrazinedicarboxylic anhydride

6-(5-chloro-2-pyridyl)-5,7-dioxo-6,7-dihydro-5H-pyrrolo(3,4-b)pyrazine
43200-82-4

6-(5-chloro-2-pyridyl)-5,7-dioxo-6,7-dihydro-5H-pyrrolo(3,4-b)pyrazine

Conditions
ConditionsYield
With propionic acid anhydride at 60 - 105℃; for 1h; Temperature; Reagent/catalyst;87%
With dmap; triethylamine In 5,5-dimethyl-1,3-cyclohexadiene at 0℃; for 13h; Reflux;85%
3-((5-chloropyridin-2-yl)carbamoyl)pyrazine-2-carboxylic acid
43200-83-5

3-((5-chloropyridin-2-yl)carbamoyl)pyrazine-2-carboxylic acid

6-(5-chloro-2-pyridyl)-5,7-dioxo-6,7-dihydro-5H-pyrrolo(3,4-b)pyrazine
43200-82-4

6-(5-chloro-2-pyridyl)-5,7-dioxo-6,7-dihydro-5H-pyrrolo(3,4-b)pyrazine

Conditions
ConditionsYield
With chloroformic acid ethyl ester; triethylamine In dichloromethane at 0 - 20℃; for 2h;
Stage #1: 3-((5-chloropyridin-2-yl)carbamoyl)pyrazine-2-carboxylic acid In dichloromethane for 1h; Heating / reflux;
Stage #2: With thionyl chloride; N,N-dimethyl-formamide In dichloromethane at 25 - 30℃; for 0.75 - 1h; Heating / reflux;
(7S)-6-(5-chloro-2-pyridyl)-6,7-dihydro-7-hydroxy-5H-pyrrolo[3,4-b]pyrazin-5-one

(7S)-6-(5-chloro-2-pyridyl)-6,7-dihydro-7-hydroxy-5H-pyrrolo[3,4-b]pyrazin-5-one

6-(5-chloro-2-pyridyl)-5,7-dioxo-6,7-dihydro-5H-pyrrolo(3,4-b)pyrazine
43200-82-4

6-(5-chloro-2-pyridyl)-5,7-dioxo-6,7-dihydro-5H-pyrrolo(3,4-b)pyrazine

Conditions
ConditionsYield
With manganese(IV) oxide In dichloromethane for 3h; Reflux;12.5 g
5-chloro-2-pyridylamine
1072-98-6

5-chloro-2-pyridylamine

6-(5-chloro-2-pyridyl)-5,7-dioxo-6,7-dihydro-5H-pyrrolo(3,4-b)pyrazine
43200-82-4

6-(5-chloro-2-pyridyl)-5,7-dioxo-6,7-dihydro-5H-pyrrolo(3,4-b)pyrazine

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1.1: toluene / 2.5 h / 20 - 52 °C
1.2: 1 h / 10 - 15 °C
2.1: dichloromethane / 1 h / Heating / reflux
2.2: 0.75 - 1 h / 25 - 30 °C / Heating / reflux
View Scheme
2,3-pyrazinedicarboxylic anhydride
4744-50-7

2,3-pyrazinedicarboxylic anhydride

6-(5-chloro-2-pyridyl)-5,7-dioxo-6,7-dihydro-5H-pyrrolo(3,4-b)pyrazine
43200-82-4

6-(5-chloro-2-pyridyl)-5,7-dioxo-6,7-dihydro-5H-pyrrolo(3,4-b)pyrazine

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1.1: toluene / 2.5 h / 20 - 52 °C
1.2: 1 h / 10 - 15 °C
2.1: dichloromethane / 1 h / Heating / reflux
2.2: 0.75 - 1 h / 25 - 30 °C / Heating / reflux
View Scheme
6-(5-chloro-2-pyridyl)-5,7-dioxo-6,7-dihydro-5H-pyrrolo(3,4-b)pyrazine
43200-82-4

6-(5-chloro-2-pyridyl)-5,7-dioxo-6,7-dihydro-5H-pyrrolo(3,4-b)pyrazine

6-(5-chloropyridin-2-yl)-6,7-dihydro-5H-pyrrolo[3,4-b]pyrazin-5-one
148891-53-6

6-(5-chloropyridin-2-yl)-6,7-dihydro-5H-pyrrolo[3,4-b]pyrazin-5-one

Conditions
ConditionsYield
With diisobutylaluminium hydride In toluene at -25 - -10℃; for 2h; Temperature; Solvent;91.1%
6-(5-chloro-2-pyridyl)-5,7-dioxo-6,7-dihydro-5H-pyrrolo(3,4-b)pyrazine
43200-82-4

6-(5-chloro-2-pyridyl)-5,7-dioxo-6,7-dihydro-5H-pyrrolo(3,4-b)pyrazine

6-(5-chloropyridin-2-yl)-7-hydroxy-6,7-dihydro-5H-pyrrolo[3,4-b]pyrazin-5-one
43200-81-3

6-(5-chloropyridin-2-yl)-7-hydroxy-6,7-dihydro-5H-pyrrolo[3,4-b]pyrazin-5-one

Conditions
ConditionsYield
Stage #1: 6-(5-chloro-2-pyridyl)-5,7-dioxo-6,7-dihydro-5H-pyrrolo(3,4-b)pyrazine With potassium borohydride In 1,4-dioxane at 10 - 15℃; for 0.5h;
Stage #2: With water In 1,4-dioxane for 6h;
87.4%
With potassium borohydride; water In tetrahydrofuran at -10 - 5℃; for 3h; Large scale;70%
With potassium borohydride; potassium carbonate In 1,4-dioxane; water; N,N-dimethyl-formamide at 13℃; pH=11; Reagent/catalyst; Solvent; pH-value;95.5 g
With sodium hydroxide; sodium tetrahydroborate In water at 0 - 5℃; for 4 - 5h; Product distribution / selectivity;
6-(5-chloro-2-pyridyl)-5,7-dioxo-6,7-dihydro-5H-pyrrolo(3,4-b)pyrazine
43200-82-4

6-(5-chloro-2-pyridyl)-5,7-dioxo-6,7-dihydro-5H-pyrrolo(3,4-b)pyrazine

(R)-6-(5-chloropyridin-2-yl)-7-oxo-6,7-dihydro-5H-pyrrolo[3,4b]pyrazin-5-yl 4-methylpiperazine-1-carboxylate D-(+)-O,O'-dibenzoyltartaric acid salt
144025-94-5

(R)-6-(5-chloropyridin-2-yl)-7-oxo-6,7-dihydro-5H-pyrrolo[3,4b]pyrazin-5-yl 4-methylpiperazine-1-carboxylate D-(+)-O,O'-dibenzoyltartaric acid salt

Conditions
ConditionsYield
Multi-step reaction with 3 steps
1: sodium hydroxide; sodium tetrahydroborate / water / 4 - 5 h / 0 - 5 °C
2: dmap; calcium oxide / dichloromethane; N,N-dimethyl-formamide / 10 - 30 °C
3: water; acetonitrile / 3 - 4.5 h / 25 - 80 °C / Resolution of racemate
View Scheme
6-(5-chloro-2-pyridyl)-5,7-dioxo-6,7-dihydro-5H-pyrrolo(3,4-b)pyrazine
43200-82-4

6-(5-chloro-2-pyridyl)-5,7-dioxo-6,7-dihydro-5H-pyrrolo(3,4-b)pyrazine

eszopiclone dibenzoyl-D-tartrate
144025-93-4

eszopiclone dibenzoyl-D-tartrate

Conditions
ConditionsYield
Multi-step reaction with 3 steps
1: sodium hydroxide; sodium tetrahydroborate / water / 4 - 5 h / 0 - 5 °C
2: dmap; calcium oxide / dichloromethane; N,N-dimethyl-formamide / 10 - 30 °C
3: water; acetonitrile / 3 - 4.5 h / 25 - 80 °C / Resolution of racemate
View Scheme
6-(5-chloro-2-pyridyl)-5,7-dioxo-6,7-dihydro-5H-pyrrolo(3,4-b)pyrazine
43200-82-4

6-(5-chloro-2-pyridyl)-5,7-dioxo-6,7-dihydro-5H-pyrrolo(3,4-b)pyrazine

eszopiclone
138729-47-2

eszopiclone

Conditions
ConditionsYield
Multi-step reaction with 4 steps
1: sodium hydroxide; sodium tetrahydroborate / water / 4 - 5 h / 0 - 5 °C
2: dmap; calcium oxide / dichloromethane; N,N-dimethyl-formamide / 10 - 30 °C
3: water; acetonitrile / 3 - 4.5 h / 25 - 80 °C / Resolution of racemate
4: water; sodium hydrogencarbonate / 3 - 4 h / 25 - 30 °C
View Scheme

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