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Xi'an Xszo Chem Co., Ltd.

1. Factory price and high quality must be guaranteed, base on 8 years of production and R&D experience2. Free samples will be provided,ensure specifications and quality are right for customer3. Customers will receive the most professional technical s

High Quality 99% Favipiravir 259793-96-9 GMP Manufacturer

Cas:259793-96-9

Min.Order:1 Gram

FOB Price: $0.1

Type:Manufacturers

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Hangzhou Think Chemical Co. Ltd

Favipiravir, CAS No.:259793-96-9 Name: Favipiravir Synonyms: 6-Fluoro-3-hydroxypyrazine-2-carboxamide Molecular Structure Mol

Fresh stock Favipiravir, CAS No.:259793-96-9

Cas:259793-96-9

Min.Order:1 Kilogram

FOB Price: $2.0

Type:Other

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Nanjing Fred Technology Co.,Ltd.

Taizhou FredChem Co. Ltd. is a high-tech enterprise located in China Medical City specializing in R&D, manufacturing, sales of new APIS, pharmaceutical intermediates and fine chemicals. All of our company is committed to provide high quality chem

favipiravir

Cas:259793-96-9

Min.Order:1 Kilogram

Negotiable

Type:Lab/Research institutions

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BOC Sciences

BOC Sciences is committed to supplying cost-effective products and services. We provide T 705 (Cas No:259793-96-9). Favipiravir, also known as T-705 or Avigan, is an experimental antiviral drug being developed by Toyama Chemical of Japan with acti

T 705

Cas:259793-96-9

Min.Order:1 Gram

Negotiable

Type:Trading Company

inquiry

Hangzhou Maytime Bio-Tech Co.,Ltd.

Favipiravir CAS:259793-96-9 ,under commercial quantity supplying Appearance:off-white to pale yellow powder Storage:store in sealed container ,keep from light Package:export worthy package Application:New broad-spectrum anti RNA drugs Port:any

Favipiravir

Cas:259793-96-9

Min.Order:1 Kilogram

Negotiable

Type:Other

inquiry

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-FLUORO-3-OXO-3,4-DIHYDROPYRAZINE-2-CARBOXAMIDE

Cas:259793-96-9

Min.Order:1 Kilogram

FOB Price: $3.0

Type:Lab/Research institutions

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Sinoway Industrial Co., Ltd.

High quality 99%up Frequenly and commercially produced Produced under GMP regulation. With cGMP and DMF documents. One of the biggest prodcer in China Appearance:White to off-white crystalline powder Storage:room temperature Package:25kg/drum or

Favipiravir

Cas:259793-96-9

Min.Order:1 Kilogram

FOB Price: $2000.0

Type:Trading Company

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Hangzhou Dingyan Chem Co., Ltd

Items Standard Result Assay (Ursolic acid) 98%min 98.22% ----------------------------------------------------------------

High purity 259793-96-9 Favipiravir

Cas:259793-96-9

Min.Order:1 Gram

FOB Price: $100.0 / 500.0

Type:Trading Company

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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

Favipiravir

Cas:259793-96-9

Min.Order:5 Kiloliter

FOB Price: $1.2 / 5.0

Type:Manufacturers

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Kono Chem Co.,Ltd

Xi'an Kono Chem Co., Ltd., founded in 2014, is a holding enterprise of Hongkong Pioneer Biotech Group. It is an export-oriented manufacturing enterprise supported by the Ministry of Commerce. Kono Chem is located in Xi'an, Shaanxi Provin

Favipiravir T-705 CAS 259793-96-9 Pharmaceutical API

Cas:259793-96-9

Min.Order:1 Kilogram

FOB Price: $300.0 / 350.0

Type:Other

inquiry

Henan Tianfu Chemical Co., Ltd.

Pyrazinecarboxamide, 6-fluoro-3,4-dihydro-3-oxo- (9CI) Basic information Product Name: Pyrazinecarboxamide, 6-fluoro-3,4-dihydro-3-oxo- (9CI) Synonyms: Pyrazinecarb

TIANFU-CHEM Pyrazinecarboxamide, 6-fluoro-3,4-dihydro-3-oxo- (9CI) 259793-96-9

Cas:259793-96-9

Min.Order:1 Kilogram

Negotiable

Type:Lab/Research institutions

inquiry

Hebei Nengqian Chemical Import and Export Co., LTD

Our advantages: 1, High quality with competitive price: 1) Standard:BP/USP/EP/Enterprise standard 2) All Purity≥99% 3) We are manufacturer and can provide high quality products with factory price. 2, Fast and safe delivery 1) Parcel can be

cas 259793-96-9 99% High Purity Original Powder Favipiravir with Safe Delivery in Stock

Cas:259793-96-9

Min.Order:1 Gram

FOB Price: $1.0 / 2.0

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

New production CAS 259793-96-9 with best quality

Cas:259793-96-9

Min.Order:1 Kilogram

FOB Price: $139.0 / 210.0

Type:Trading Company

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 email in time pr

High Quality Favipiravir 259793-96-9 GMP Manufacturer

Cas:259793-96-9

Min.Order:1 Kilogram

Negotiable

Type:Lab/Research institutions

inquiry

Henan Sinotech Import&Export Corporation

Name: Favipiravir CasNo:259793-96-9 Molecular Formula:C5H4FN3O2 Purity:98%~102% Molecular Weight:259793-96-9 Appearance:white powder Storage:Store in cool and dry place, away from sun light. Package:25kg Application:API Transportation:By sea or b

Favipiravir CAS:259793-96-9

Cas:259793-96-9

Min.Order:1 Kilogram

FOB Price: $1.0

Type:Other

inquiry

Hangzhou Sartort Biopharma Co., Ltd

Top quality favipiravir High quality Production Capacity: 500grams/Month Payment Terms: L/C, T/T, D/P, Western Union, Money Gram Powder: Yes Customized: Non-Customized Certification:

Top quality favipiravir High quality

Cas:259793-96-9

Min.Order:1 Kilogram

FOB Price: $650.0 / 850.0

Type:Lab/Research institutions

inquiry

HANWAYS CHEMPHARM CO.,LIMITED

Hanways chempharm is a specialized company concentrating on the R&D, production, marketing and technical service of APIs and pharmaceutical intermediates. The marketing department is located in Wuhan. We have two GMP facilities in Hubei Pr

Factory Supply High Quality API Favipiravir Raw Materials CAS 259793-96-9 Favipiravir

Cas:259793-96-9

Min.Order:1 Kilogram

FOB Price: $20.0 / 40.0

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

2-Pyrazinecarboxamide,6-fluoro-3,4-dihydro-3-oxo- 259793-96-9

Cas:259793-96-9

Min.Order:1 Kilogram

Negotiable

Type:Lab/Research institutions

inquiry

Xi'an Faithful Biotech Co., Ltd.

We are the manufacturers and suppliers of API in China, and warehouse in Germany and USA of California, which can quickly and safely deliver to your address 1.High quality and competitive price. 2.Free sample for your evaluation. 3.Promptly delivery

Qingdao Beluga Import and Export Co., LTD

Favipiravir CAS:259793-96-9 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 intermediate

Favipiravir CAS:259793-96-9

Cas:259793-96-9

Min.Order:1 Gram

Negotiable

Type:Lab/Research institutions

inquiry

Wuhan Wonda Pharm Limited

1.high quality: quality is life. quality is the most important element for all goods. we have a lab doing research in wuhan china. hplc and nmr is available if needed. 2.reasonable price: we provide high quality products with competi

Anti Virus Favipiravir 99.0% Favipiravir manufacturer

Cas:259793-96-9

Min.Order:10 Gram

Negotiable

Type:Lab/Research institutions

inquiry

Hangzhou JINLAN Pharm-Drugs Technology Co., Ltd

We can provide GMP validation service that complies with SFDA, FDA, WHO and EU EMPA.Excellent registration team could help us easlily to register our products in different countries.If you and your customer are interested in some products or need CMO

Favipiravir manufacturer/supplier

Cas:259793-96-9

Min.Order:1 Gram

Negotiable

Type:Trading Company

inquiry

HUBEI RISON CHEMICAL CO.,LTD.

Wuhan Star Trading co.,ltd is engaged in supplying various speciality chemicals used for electroplating, pharmaceuticals and other industry. We have three production lines to produce following chemicals : Intermediates for electroplating; Hypophospho

6-Fluoro-3-hydroxypyrazine-2-carboxamider

Cas:259793-96-9

Min.Order:500 Kilogram

Negotiable

Type:Other

inquiry

LIDE PHARMACEUTICALS LIMITED

Advantage : LIDE PHARMACEUTICALS LTD. is a mid-small manufacturing-type enterprise, engaged in pharmaceutical intermediates of R&D, custom-made and production, and also involving trading chemicals for export. We have established the R&amp

Favipiravir/ LIDE PHARMA- Factory supply / Best price

Cas:259793-96-9

Min.Order:0

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-Pyrazinecarboxamide,6-fluoro-3,4-dihydro-3-oxo-

Cas:259793-96-9

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

Hangzhou Fandachem Co.,Ltd

Hangzhou Fanda Chemical Co.,Ltd (FandaChem) , a China-based chemical company, specialize in exporting favipiravir CAS:259793-96-9;Please contact us by email freely. We are leading exporter in China. If you really need this cargo, p

favipiravir CAS:259793-96-9 from Fandachem

Cas:259793-96-9

Min.Order:0 Metric Ton

Negotiable

Type:Other

inquiry

Xiamen Hisunny Chemical Co.,Ltd

Best quality & Attractive price & Professional service; Trial & Pilot & Commercial Hisunny Chemical is a leading manufacturer and supplier of chemicals in China. We develop produce and distribute high quality intermediates, specia

Pyrazinecarboxamide, 6-fluoro-3,4-dihydro-3-oxo- (9CI)

Cas:259793-96-9

Min.Order:0

Negotiable

Type:Manufacturers

inquiry

Afine Chemicals Limited

Our Services 1. We are a professional exporter for Optical Brighteners, dyes, pigments 2. Stable and continue quality 3. Quickly delivery 4. Good service Our advantages 1. Government awarded company. Top 100 enterprises in Hangzhou 2.

FAVIPIRAVIR CAS 259793-96-9

Cas:259793-96-9

Min.Order:100 Gram

Negotiable

Type:Lab/Research institutions

inquiry

Taizhou Crene Biotechnology co.ltd

Our company provides one-stop services of research - development - production for a variety of special prouducts. Not only do we make effective use of our strong technological strength, but also establish of cooperative relations with several well-

T-705 Favipiravir 259793-96-9

Cas:259793-96-9

Min.Order:1 Gram

Negotiable

Type:Lab/Research institutions

inquiry

Hubei Yuanmeng Biological Technology Co., Ltd.

Hubei Yuanmeng Biological Technology Co., Ltd., which is located in Wuhan, China. We are specializing in the exportation of APIs, and plant extracts ect. Our products has been exported to America, Australia, Brazil, the Europe, Middle East and other

Factory Supply 99% Favipiravir CAS 259793-96-9 with Best Price

Cas:259793-96-9

Min.Order:1 Kilogram

FOB Price: $3.0 / 7.0

Type:Trading Company

inquiry

Synthetic route

6-fluoro-3-hydroxy-2-cyanopyrazine
356783-31-8

6-fluoro-3-hydroxy-2-cyanopyrazine

favipiravir
259793-96-9

favipiravir

Conditions
ConditionsYield
Stage #1: 6-fluoro-3-hydroxy-2-cyanopyrazine With sulfuric acid at 50℃; for 4h;
Stage #2: With water at 3 - 10℃; for 0.666667h;
Stage #3: With sodium hydroxide In water at 10℃; for 0.75h;
92.3%
With sodium hydroxide In water at 5 - 45℃; for 5.5h; Large scale;91%
With sulfuric acid at 50℃; for 4h;68.43%
Stage #1: 6-fluoro-3-hydroxy-2-cyanopyrazine With dihydrogen peroxide; sodium hydroxide at 10 - 20℃; for 1h;
Stage #2: With N-ethyl-N,N-diisopropylamine In ethyl acetate at 80℃; for 1h; Reagent/catalyst;
C6H5FN2O3

C6H5FN2O3

favipiravir
259793-96-9

favipiravir

Conditions
ConditionsYield
With ammonium carbonate Reagent/catalyst;92.3%
3,6-difluoro-2-pyrazinecarboxamide
356783-29-4

3,6-difluoro-2-pyrazinecarboxamide

favipiravir
259793-96-9

favipiravir

Conditions
ConditionsYield
With water; sodium hydroxide at 60℃; for 3h;92.1%
With sodium hydrogencarbonate In 1,4-dioxane; water at 60℃; for 8h;82%
With water; sodium hydrogencarbonate at 50℃; for 8.5h;65%
3,6-difluoropyrazine-2-carbonitrile
356783-28-3

3,6-difluoropyrazine-2-carbonitrile

favipiravir
259793-96-9

favipiravir

Conditions
ConditionsYield
Stage #1: 3,6-difluoropyrazine-2-carbonitrile With sodium acetate In tetrahydrofuran; water for 20h; Reflux;
Stage #2: With dihydrogen peroxide; sodium hydroxide In water; toluene at 0 - 20℃; for 4h;
89.6%
Multi-step reaction with 2 steps
1.1: sodium acetate; water / toluene; dimethyl sulfoxide / 7 h / 50 °C
2.1: sulfuric acid / 4 h / 50 °C
2.2: 0.67 h / 3 - 10 °C
2.3: 0.75 h / 10 °C
View Scheme
Multi-step reaction with 2 steps
1: hydrogenchloride / tetrahydrofuran / 1.5 h / 60 °C
2: sodium hydrogencarbonate / 1,4-dioxane; water / 8 h / 60 °C
View Scheme
dicyclohexylamine salt
1137606-74-6

dicyclohexylamine salt

favipiravir
259793-96-9

favipiravir

Conditions
ConditionsYield
Stage #1: dicyclohexylamine salt With water; sodium hydroxide In toluene at 20℃; for 0.5h;
Stage #2: With dihydrogen peroxide In toluene at 15 - 25℃; for 0.5h;
84%
Stage #1: dicyclohexylamine salt With sodium hydroxide In water; toluene at 15 - 25℃; for 0.5h;
Stage #2: With water; dihydrogen peroxide at 15 - 30℃;
Stage #3: With hydrogenchloride In water
C12H10FN3O2

C12H10FN3O2

favipiravir
259793-96-9

favipiravir

Conditions
ConditionsYield
With ammonia; sodium In tetrahydrofuran at -70 - -65℃;72%
2-hydroxypyrazine-3-carboxamide
55321-99-8

2-hydroxypyrazine-3-carboxamide

favipiravir
259793-96-9

favipiravir

Conditions
ConditionsYield
With 1-fluoro-4-methyl-1,4-diazoniabicyclo<2.2.2>octane ditetrafluoroborate In 1,2-dichloro-ethane; N,N-dimethyl-formamide at 70 - 80℃; for 20h; Reagent/catalyst; Solvent; Temperature;71.3%
With fluorine In water
Multi-step reaction with 5 steps
1.1: bromine / acetonitrile / 6 h / 0 - 40 °C
2.1: trichlorophosphate / chlorobenzene / 0.5 h / 60 °C
2.2: 2.67 h / 90 - 100 °C
3.1: potassium fluoride; tetrabutylammomium bromide / toluene; dimethyl sulfoxide / 2.5 h / 60 °C
4.1: sodium acetate; water / toluene; dimethyl sulfoxide / 7 h / 50 °C
5.1: sulfuric acid / 4 h / 50 °C
5.2: 0.67 h / 3 - 10 °C
5.3: 0.75 h / 10 °C
View Scheme
Multi-step reaction with 4 steps
1.1: pyridine; N-chloro-succinimide / acetonitrile / 4 h / 80 - 85 °C / Inert atmosphere
2.1: N-ethyl-N,N-diisopropylamine; phosphorus(V) oxybromide / chlorobenzene / 4 h / 0 °C / Reflux
3.1: potassium fluoride / N,N-dimethyl-formamide / 20 h / 80 - 85 °C
4.1: sodium acetate / tetrahydrofuran; water / 20 h / Reflux
4.2: 4 h / 0 - 20 °C
View Scheme
Multi-step reaction with 3 steps
1.1: potassium carbonate; tetra-(n-butyl)ammonium iodide / acetonitrile / 55 - 60 °C
2.1: formic acid / 5 - 10 °C
2.2: 5 - 8 °C
3.1: ammonia; sodium / tetrahydrofuran / -70 - -65 °C
View Scheme
3-hydroxy-6-bromopyrazine-2-carboxamide

3-hydroxy-6-bromopyrazine-2-carboxamide

favipiravir
259793-96-9

favipiravir

Conditions
ConditionsYield
With potassium fluoride; 18-crown-6 ether In toluene at 100℃; for 20h;15.96%
Multi-step reaction with 4 steps
1.1: trichlorophosphate / chlorobenzene / 0.5 h / 60 °C
1.2: 2.67 h / 90 - 100 °C
2.1: potassium fluoride; tetrabutylammomium bromide / toluene; dimethyl sulfoxide / 2.5 h / 60 °C
3.1: sodium acetate; water / toluene; dimethyl sulfoxide / 7 h / 50 °C
4.1: sulfuric acid / 4 h / 50 °C
4.2: 0.67 h / 3 - 10 °C
4.3: 0.75 h / 10 °C
View Scheme
Multi-step reaction with 4 steps
1: trichlorophosphate; N-ethyl-N,N-diisopropylamine / water / 8 h / 60 - 100 °C
2: potassium fluoride; tetrabutylammomium bromide / toluene; dimethyl sulfoxide / 3 h / 55 °C
3: dihydrogen peroxide / toluene; dimethyl sulfoxide / 2 h / 27 °C / Cooling with ice
4: sodium hydrogencarbonate; water / 8.5 h / 50 °C
View Scheme
Multi-step reaction with 4 steps
1.1: trichlorophosphate / 0.25 h / 70 °C
1.2: 6 h / 20 - 100 °C
1.3: 1 h
2.1: potassium fluoride dihydrate; tetrabutylammomium bromide / dimethyl sulfoxide / 3 h / 50 °C
3.1: potassium carbonate; dihydrogen peroxide / dimethyl sulfoxide; water / 1.5 h / 25 °C
4.1: sodium hydrogencarbonate; water / dimethyl sulfoxide / 8 h / 50 °C
View Scheme
Multi-step reaction with 3 steps
1: diethylamino-sulfur trifluoride / dichloromethane / 5 h / 0 °C
2: 18-crown-6 ether; potassium fluoride / toluene / 20 h / 110 °C
3: methanol; sodium hydrogencarbonate; water / 8 h / 50 °C
View Scheme
6-fluoro-3-methoxy-2-pyrazinecarboxamide

6-fluoro-3-methoxy-2-pyrazinecarboxamide

favipiravir
259793-96-9

favipiravir

Conditions
ConditionsYield
With chloro-trimethyl-silane; sodium chloride; sodium thiosulfate In chloroform; water; acetonitrile
With chloro-trimethyl-silane; sodium iodide; sodium chloride; sodium thiosulfate In chloroform; water; acetonitrile
methyl 6-fluoro-3-oxo-3,4-dihydro-2-pyrazinecarboxylate
356783-27-2

methyl 6-fluoro-3-oxo-3,4-dihydro-2-pyrazinecarboxylate

favipiravir
259793-96-9

favipiravir

Conditions
ConditionsYield
With sodium bicarbonate; sodium chloride; ammonia In methanol; water; ethyl acetate
6-fluoro-3-oxo-3,4-dihydro-2-pyrazinecarbonitrile
356783-31-8

6-fluoro-3-oxo-3,4-dihydro-2-pyrazinecarbonitrile

favipiravir
259793-96-9

favipiravir

Conditions
ConditionsYield
With sodium hydroxide; sulfuric acid; dihydrogen peroxide In water
3-amino-6-fluoro-2-pyrazinecarboxamide
356783-42-1

3-amino-6-fluoro-2-pyrazinecarboxamide

favipiravir
259793-96-9

favipiravir

Conditions
ConditionsYield
With sodium bicarbonate; sodium chloride; sulfuric acid; sodium nitrite In (2S)-N-methyl-1-phenylpropan-2-amine hydrate; di-isopropyl ether; water; ethyl acetate
3,6-dichloropyrazine-2-carbonitrile
356783-16-9

3,6-dichloropyrazine-2-carbonitrile

favipiravir
259793-96-9

favipiravir

Conditions
ConditionsYield
Multi-step reaction with 3 steps
1.1: potassium fluoride; tetrabutylammomium bromide / toluene; dimethyl sulfoxide / 2.5 h / 60 °C
2.1: sodium acetate; water / toluene; dimethyl sulfoxide / 7 h / 50 °C
3.1: sulfuric acid / 4 h / 50 °C
3.2: 0.67 h / 3 - 10 °C
3.3: 0.75 h / 10 °C
View Scheme
Multi-step reaction with 3 steps
1: potassium fluoride; tetrabutylammomium bromide / dimethyl sulfoxide / 3 h / 55 °C / Sealed tube
2: dihydrogen peroxide / 2 h / 27 °C
3: sodium hydrogencarbonate; water / 8.5 h / 50 °C
View Scheme
Multi-step reaction with 3 steps
1: potassium fluoride; tetrabutylammomium bromide / toluene; dimethyl sulfoxide / 3 h / 55 °C
2: dihydrogen peroxide / toluene; dimethyl sulfoxide / 2 h / 27 °C / Cooling with ice
3: sodium hydrogencarbonate; water / 8.5 h / 50 °C
View Scheme
C9H8ClN3O3
1374986-08-9

C9H8ClN3O3

favipiravir
259793-96-9

favipiravir

Conditions
ConditionsYield
Multi-step reaction with 3 steps
1.1: potassium fluoride / dimethyl sulfoxide / 4 h / 90 °C
2.1: sodium hydrogencarbonate; water / 4 h / 100 °C
2.2: 1.17 h / 20 °C
3.1: water; sodium hydroxide / toluene / 0.5 h / 20 °C
3.2: 0.5 h / 15 - 25 °C
View Scheme
C9H8FN3O3
1374986-19-2

C9H8FN3O3

favipiravir
259793-96-9

favipiravir

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1.1: sodium hydrogencarbonate; water / 4 h / 100 °C
1.2: 1.17 h / 20 °C
2.1: water; sodium hydroxide / toluene / 0.5 h / 20 °C
2.2: 0.5 h / 15 - 25 °C
View Scheme
C9H10N4O6S
1374986-28-3

C9H10N4O6S

favipiravir
259793-96-9

favipiravir

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1.1: potassium fluoride / dimethyl sulfoxide / 3 h / 80 °C / Inert atmosphere
1.2: 3 h / 80 °C
1.3: 20 °C
2.1: water; sodium hydroxide / toluene / 0.5 h / 20 °C
2.2: 0.5 h / 15 - 25 °C
View Scheme
C9H12N2O4
1374986-36-3

C9H12N2O4

favipiravir
259793-96-9

favipiravir

Conditions
ConditionsYield
Multi-step reaction with 5 steps
1.1: acetyl chloride; isopentyl nitrite / isopropyl alcohol / 1.5 h / 5 - 40 °C / Inert atmosphere
2.1: trichlorophosphate / toluene; N,N-dimethyl-formamide / 7 h / 15 - 70 °C / Inert atmosphere
3.1: potassium fluoride / dimethyl sulfoxide / 4 h / 90 °C
4.1: sodium hydrogencarbonate; water / 4 h / 100 °C
4.2: 1.17 h / 20 °C
5.1: water; sodium hydroxide / toluene / 0.5 h / 20 °C
5.2: 0.5 h / 15 - 25 °C
View Scheme
C9H11N3O5
1374986-38-5

C9H11N3O5

favipiravir
259793-96-9

favipiravir

Conditions
ConditionsYield
Multi-step reaction with 4 steps
1.1: trichlorophosphate / toluene; N,N-dimethyl-formamide / 7 h / 15 - 70 °C / Inert atmosphere
2.1: potassium fluoride / dimethyl sulfoxide / 4 h / 90 °C
3.1: sodium hydrogencarbonate; water / 4 h / 100 °C
3.2: 1.17 h / 20 °C
4.1: water; sodium hydroxide / toluene / 0.5 h / 20 °C
4.2: 0.5 h / 15 - 25 °C
View Scheme
C11H15N2O6(1-)*K(1+)

C11H15N2O6(1-)*K(1+)

favipiravir
259793-96-9

favipiravir

Conditions
ConditionsYield
Multi-step reaction with 7 steps
1.1: trifluoroacetic acid; hydroxylamine hydrochloride / methanol / 5 h / 10 °C / Inert atmosphere; Reflux
2.1: toluene-4-sulfonic acid; acetic acid / 2 h / 77 - 80 °C / Industrial scale
3.1: trichlorophosphate; triethylamine hydrochloride / 4 h / 85 °C
4.1: triethylamine / 2 h / 80 °C
5.1: potassium fluoride / dimethyl sulfoxide / 4 h / 90 °C
6.1: sodium hydrogencarbonate; water / 4 h / 100 °C
6.2: 1.17 h / 20 °C
7.1: water; sodium hydroxide / toluene / 0.5 h / 20 °C
7.2: 0.5 h / 15 - 25 °C
View Scheme
C11H17N3O6
1374986-03-4

C11H17N3O6

favipiravir
259793-96-9

favipiravir

Conditions
ConditionsYield
Multi-step reaction with 6 steps
1.1: toluene-4-sulfonic acid; acetic acid / 2 h / 77 - 80 °C / Industrial scale
2.1: trichlorophosphate; triethylamine hydrochloride / 4 h / 85 °C
3.1: triethylamine / 2 h / 80 °C
4.1: potassium fluoride / dimethyl sulfoxide / 4 h / 90 °C
5.1: sodium hydrogencarbonate; water / 4 h / 100 °C
5.2: 1.17 h / 20 °C
6.1: water; sodium hydroxide / toluene / 0.5 h / 20 °C
6.2: 0.5 h / 15 - 25 °C
View Scheme
C7H5N3O4
1374986-04-5

C7H5N3O4

favipiravir
259793-96-9

favipiravir

Conditions
ConditionsYield
Multi-step reaction with 5 steps
1.1: trichlorophosphate; triethylamine hydrochloride / 4 h / 85 °C
2.1: triethylamine / 2 h / 80 °C
3.1: potassium fluoride / dimethyl sulfoxide / 4 h / 90 °C
4.1: sodium hydrogencarbonate; water / 4 h / 100 °C
4.2: 1.17 h / 20 °C
5.1: water; sodium hydroxide / toluene / 0.5 h / 20 °C
5.2: 0.5 h / 15 - 25 °C
View Scheme
methyl-5-chloroisoxazolo[4,5-b]pyrazine-3-carboxylate
1374986-05-6

methyl-5-chloroisoxazolo[4,5-b]pyrazine-3-carboxylate

favipiravir
259793-96-9

favipiravir

Conditions
ConditionsYield
Multi-step reaction with 4 steps
1.1: triethylamine / 2 h / 80 °C
2.1: potassium fluoride / dimethyl sulfoxide / 4 h / 90 °C
3.1: sodium hydrogencarbonate; water / 4 h / 100 °C
3.2: 1.17 h / 20 °C
4.1: water; sodium hydroxide / toluene / 0.5 h / 20 °C
4.2: 0.5 h / 15 - 25 °C
View Scheme
2-pyrazine carbonitrile
19847-12-2

2-pyrazine carbonitrile

favipiravir
259793-96-9

favipiravir

Conditions
ConditionsYield
Multi-step reaction with 5 steps
1.1: acetic acid; dihydrogen peroxide / 22 h / -5 - 95 °C
2.1: trichlorophosphate / 1.83 h / 50 - 70 °C
2.2: 6 h / 96 °C
3.1: potassium fluoride; tetrabutylammomium bromide / dimethyl sulfoxide / 3 h / 55 °C / Sealed tube
4.1: dihydrogen peroxide / 2 h / 27 °C
5.1: sodium hydrogencarbonate; water / 8.5 h / 50 °C
View Scheme
1,4-dioxopyrazinamide
18960-19-5

1,4-dioxopyrazinamide

favipiravir
259793-96-9

favipiravir

Conditions
ConditionsYield
Multi-step reaction with 4 steps
1.1: trichlorophosphate / 1.83 h / 50 - 70 °C
1.2: 6 h / 96 °C
2.1: potassium fluoride; tetrabutylammomium bromide / dimethyl sulfoxide / 3 h / 55 °C / Sealed tube
3.1: dihydrogen peroxide / 2 h / 27 °C
4.1: sodium hydrogencarbonate; water / 8.5 h / 50 °C
View Scheme
Multi-step reaction with 4 steps
1.1: trichlorophosphate / chlorobenzene / 1.83 h / 50 - 70 °C
1.2: 8 h / 110 °C
2.1: tetrabutyl ammonium fluoride; tetrabutylammomium bromide / 3 h / 60 °C / Sealed tube
3.1: sodium acetate; water / 1,4-dioxane / 7 h / 55 °C
4.1: sulfuric acid / 4 h / 50 °C
View Scheme
3-aminopyrazinoic acid
5424-01-1

3-aminopyrazinoic acid

favipiravir
259793-96-9

favipiravir

Conditions
ConditionsYield
Multi-step reaction with 8 steps
1: sulfuric acid / 20 °C / Cooling with ice
2: N-Bromosuccinimide / acetonitrile / 20 °C
3: sulfuric acid; sodium nitrite / 2 h / -5 - 20 °C
4: ammonium hydroxide / 3 h / 20 °C
5: trichlorophosphate; N-ethyl-N,N-diisopropylamine / water / 8 h / 60 - 100 °C
6: potassium fluoride; tetrabutylammomium bromide / toluene; dimethyl sulfoxide / 3 h / 55 °C
7: dihydrogen peroxide / toluene; dimethyl sulfoxide / 2 h / 27 °C / Cooling with ice
8: sodium hydrogencarbonate; water / 8.5 h / 50 °C
View Scheme
Multi-step reaction with 8 steps
1.1: sulfuric acid / 48 h / Cooling with ice
2.1: N-Bromosuccinimide / acetonitrile / 24 h / 20 °C / Inert atmosphere
3.1: sulfuric acid; sodium nitrite / 2 h / -5 - 25 °C
3.2: 1.5 h
4.1: ammonium hydroxide / 3 h / 20 °C
5.1: trichlorophosphate / 0.25 h / 70 °C
5.2: 6 h / 20 - 100 °C
5.3: 1 h
6.1: potassium fluoride dihydrate; tetrabutylammomium bromide / dimethyl sulfoxide / 3 h / 50 °C
7.1: potassium carbonate; dihydrogen peroxide / dimethyl sulfoxide; water / 1.5 h / 25 °C
8.1: sodium hydrogencarbonate; water / dimethyl sulfoxide / 8 h / 50 °C
View Scheme
Methyl 3-amino-2-pyrazinecarboxylate
16298-03-6

Methyl 3-amino-2-pyrazinecarboxylate

favipiravir
259793-96-9

favipiravir

Conditions
ConditionsYield
Multi-step reaction with 7 steps
1: N-Bromosuccinimide / acetonitrile / 20 °C
2: sulfuric acid; sodium nitrite / 2 h / -5 - 20 °C
3: ammonium hydroxide / 3 h / 20 °C
4: trichlorophosphate; N-ethyl-N,N-diisopropylamine / water / 8 h / 60 - 100 °C
5: potassium fluoride; tetrabutylammomium bromide / toluene; dimethyl sulfoxide / 3 h / 55 °C
6: dihydrogen peroxide / toluene; dimethyl sulfoxide / 2 h / 27 °C / Cooling with ice
7: sodium hydrogencarbonate; water / 8.5 h / 50 °C
View Scheme
Multi-step reaction with 7 steps
1.1: N-Bromosuccinimide / acetonitrile / 24 h / 20 °C / Inert atmosphere
2.1: sulfuric acid; sodium nitrite / 2 h / -5 - 25 °C
2.2: 1.5 h
3.1: ammonium hydroxide / 3 h / 20 °C
4.1: trichlorophosphate / 0.25 h / 70 °C
4.2: 6 h / 20 - 100 °C
4.3: 1 h
5.1: potassium fluoride dihydrate; tetrabutylammomium bromide / dimethyl sulfoxide / 3 h / 50 °C
6.1: potassium carbonate; dihydrogen peroxide / dimethyl sulfoxide; water / 1.5 h / 25 °C
7.1: sodium hydrogencarbonate; water / dimethyl sulfoxide / 8 h / 50 °C
View Scheme
methyl 3-amino-6-bromopyrazine-2-carboxylate
6966-01-4

methyl 3-amino-6-bromopyrazine-2-carboxylate

favipiravir
259793-96-9

favipiravir

Conditions
ConditionsYield
Multi-step reaction with 6 steps
1: sulfuric acid; sodium nitrite / 2 h / -5 - 20 °C
2: ammonium hydroxide / 3 h / 20 °C
3: trichlorophosphate; N-ethyl-N,N-diisopropylamine / water / 8 h / 60 - 100 °C
4: potassium fluoride; tetrabutylammomium bromide / toluene; dimethyl sulfoxide / 3 h / 55 °C
5: dihydrogen peroxide / toluene; dimethyl sulfoxide / 2 h / 27 °C / Cooling with ice
6: sodium hydrogencarbonate; water / 8.5 h / 50 °C
View Scheme
Multi-step reaction with 6 steps
1.1: sulfuric acid; sodium nitrite / 2 h / -5 - 25 °C
1.2: 1.5 h
2.1: ammonium hydroxide / 3 h / 20 °C
3.1: trichlorophosphate / 0.25 h / 70 °C
3.2: 6 h / 20 - 100 °C
3.3: 1 h
4.1: potassium fluoride dihydrate; tetrabutylammomium bromide / dimethyl sulfoxide / 3 h / 50 °C
5.1: potassium carbonate; dihydrogen peroxide / dimethyl sulfoxide; water / 1.5 h / 25 °C
6.1: sodium hydrogencarbonate; water / dimethyl sulfoxide / 8 h / 50 °C
View Scheme
Multi-step reaction with 5 steps
1: sulfuric acid; sodium nitrite / 0.5 h / 0 - 60 °C
2: bromine; potassium carbonate / tetrahydrofuran / 12 h / 66 °C
3: tetrabutylammomium bromide; potassium fluoride / dimethyl sulfoxide; toluene / 3 h / 80 °C
4: hydrogen; palladium 10% on activated carbon / methanol / 4 h / 20 - 25 °C
5: ammonium carbonate
View Scheme
3-hydroxy-6-bromopyrazine-2-carboxylic acid methyl ester
21874-61-3

3-hydroxy-6-bromopyrazine-2-carboxylic acid methyl ester

favipiravir
259793-96-9

favipiravir

Conditions
ConditionsYield
Multi-step reaction with 5 steps
1: ammonium hydroxide / 3 h / 20 °C
2: trichlorophosphate; N-ethyl-N,N-diisopropylamine / water / 8 h / 60 - 100 °C
3: potassium fluoride; tetrabutylammomium bromide / toluene; dimethyl sulfoxide / 3 h / 55 °C
4: dihydrogen peroxide / toluene; dimethyl sulfoxide / 2 h / 27 °C / Cooling with ice
5: sodium hydrogencarbonate; water / 8.5 h / 50 °C
View Scheme
Multi-step reaction with 5 steps
1.1: ammonium hydroxide / 3 h / 20 °C
2.1: trichlorophosphate / 0.25 h / 70 °C
2.2: 6 h / 20 - 100 °C
2.3: 1 h
3.1: potassium fluoride dihydrate; tetrabutylammomium bromide / dimethyl sulfoxide / 3 h / 50 °C
4.1: potassium carbonate; dihydrogen peroxide / dimethyl sulfoxide; water / 1.5 h / 25 °C
5.1: sodium hydrogencarbonate; water / dimethyl sulfoxide / 8 h / 50 °C
View Scheme
Multi-step reaction with 4 steps
1: bromine; potassium carbonate / tetrahydrofuran / 12 h / 66 °C
2: tetrabutylammomium bromide; potassium fluoride / dimethyl sulfoxide; toluene / 3 h / 80 °C
3: hydrogen; palladium 10% on activated carbon / methanol / 4 h / 20 - 25 °C
4: ammonium carbonate
View Scheme
3-amino-6-bromo-pyrazine-2-carboxylic acid
486424-37-7

3-amino-6-bromo-pyrazine-2-carboxylic acid

favipiravir
259793-96-9

favipiravir

Conditions
ConditionsYield
Multi-step reaction with 6 steps
1: sulfuric acid / 48 h / 0 - 40 °C
2: sulfuric acid; sodium nitrite / 0.5 h / 0 - 60 °C
3: bromine; potassium carbonate / tetrahydrofuran / 12 h / 66 °C
4: tetrabutylammomium bromide; potassium fluoride / dimethyl sulfoxide; toluene / 3 h / 80 °C
5: hydrogen; palladium 10% on activated carbon / methanol / 4 h / 20 - 25 °C
6: ammonium carbonate
View Scheme
tetraethyl {[(2-hydroxypropane-1,3-diyl)bis(oxy)]bis(ethylene)}bis(phosphonate)

tetraethyl {[(2-hydroxypropane-1,3-diyl)bis(oxy)]bis(ethylene)}bis(phosphonate)

favipiravir
259793-96-9

favipiravir

tetraethyl 5-((3-carbamoyl-5-fluoropyrazin-2-yl)oxy)-3,7-dioxanonane-1,9-diphosphonate

tetraethyl 5-((3-carbamoyl-5-fluoropyrazin-2-yl)oxy)-3,7-dioxanonane-1,9-diphosphonate

Conditions
ConditionsYield
With di-isopropyl azodicarboxylate; triphenylphosphine In toluene at 60 - 65℃; for 0.166667h; Mitsunobu Displacement; Inert atmosphere;90%
diethyl 2-((2-cyanoethyl)(2-hydroxyethyl)amino)ethylphosphonate
1383381-61-0

diethyl 2-((2-cyanoethyl)(2-hydroxyethyl)amino)ethylphosphonate

favipiravir
259793-96-9

favipiravir

A

diethyl 3-(2-(3-carbamoyl-5-fluoro-2-oxopyrazin-1-yl)ethyl)-5-cyano-3-azapentanephosphonate

diethyl 3-(2-(3-carbamoyl-5-fluoro-2-oxopyrazin-1-yl)ethyl)-5-cyano-3-azapentanephosphonate

B

diethyl 3-(2-((3-carbamoyl-5-fluoropyrazin-2-yl)oxy)ethyl)-5-cyano-3-azapentanephosphonate

diethyl 3-(2-((3-carbamoyl-5-fluoropyrazin-2-yl)oxy)ethyl)-5-cyano-3-azapentanephosphonate

Conditions
ConditionsYield
With di-isopropyl azodicarboxylate; triphenylphosphine In toluene at 60 - 65℃; for 0.166667h; Mitsunobu Displacement; Inert atmosphere; Overall yield = 93 %;A 23%
B 70%
tetraethyl 2,2'-(2-hydroxyethylazanediyl)bis(ethane-2,1-diyl)diphosphonate
1332338-67-6

tetraethyl 2,2'-(2-hydroxyethylazanediyl)bis(ethane-2,1-diyl)diphosphonate

favipiravir
259793-96-9

favipiravir

A

tetraethyl 3-(2-(3-carbamoyl-5-fluoro-2-oxopyrazin-1-yl)ethyl)-3-azapentane-1,5-diphosphonate

tetraethyl 3-(2-(3-carbamoyl-5-fluoro-2-oxopyrazin-1-yl)ethyl)-3-azapentane-1,5-diphosphonate

B

tetraethyl 3-(2-((3-carbamoyl-5-fluoropyrazin-2-yl)oxy)ethyl)-3-azapentane-1,5-diphosphonate

tetraethyl 3-(2-((3-carbamoyl-5-fluoropyrazin-2-yl)oxy)ethyl)-3-azapentane-1,5-diphosphonate

Conditions
ConditionsYield
With di-isopropyl azodicarboxylate; triphenylphosphine In toluene at 60 - 65℃; for 0.166667h; Solvent; Temperature; Time; Mitsunobu Displacement; Inert atmosphere; Overall yield = 94 %;A 39%
B 55%
diethyl [2-(2-hydroxyethoxy)ethyl]phosphonate

diethyl [2-(2-hydroxyethoxy)ethyl]phosphonate

favipiravir
259793-96-9

favipiravir

diethyl 5-((3-carbamoyl-5-fluoropyrazin-2-yl)oxy)-3-oxapentanephosphonate

diethyl 5-((3-carbamoyl-5-fluoropyrazin-2-yl)oxy)-3-oxapentanephosphonate

Conditions
ConditionsYield
With di-isopropyl azodicarboxylate; triphenylphosphine In toluene at 60 - 65℃; for 0.166667h; Mitsunobu Displacement; Inert atmosphere;51%
diethyl 2-((2-hydroxyethyl)(2-(trityloxy)ethyl)amino)ethylphosphonate
1383381-63-2

diethyl 2-((2-hydroxyethyl)(2-(trityloxy)ethyl)amino)ethylphosphonate

favipiravir
259793-96-9

favipiravir

A

diethyl 3-(2-((3-carbamoyl-5-fluoropyrazin-2-yl)oxy)ethyl)-5-trityloxy-3-azapentanephosphonate

diethyl 3-(2-((3-carbamoyl-5-fluoropyrazin-2-yl)oxy)ethyl)-5-trityloxy-3-azapentanephosphonate

B

diethyl 3-(2-(3-carbamoyl-5-fluoro-2-oxopyrazin-1-yl)ethyl)-5-trityloxy-3-azapentanephosphonate

diethyl 3-(2-(3-carbamoyl-5-fluoro-2-oxopyrazin-1-yl)ethyl)-5-trityloxy-3-azapentanephosphonate

Conditions
ConditionsYield
With di-isopropyl azodicarboxylate; triphenylphosphine In toluene at 60 - 65℃; for 0.166667h; Mitsunobu Displacement; Inert atmosphere; Overall yield = 73 %;A 49%
B 24%
dibenzyl [[bis(benzyloxy)phosphoryl]oxy]phosphonate
990-91-0

dibenzyl [[bis(benzyloxy)phosphoryl]oxy]phosphonate

favipiravir
259793-96-9

favipiravir

dibenzyl (3-carbamoyl-5-fluoropyrazin-2-yl) phosphate

dibenzyl (3-carbamoyl-5-fluoropyrazin-2-yl) phosphate

Conditions
ConditionsYield
Stage #1: favipiravir With sodium hydride In N,N-dimethyl-formamide for 1h; Inert atmosphere;
Stage #2: dibenzyl [[bis(benzyloxy)phosphoryl]oxy]phosphonate In N,N-dimethyl-formamide at 20℃; for 3h; Inert atmosphere;
36%
[2-[[tert-butyl(diphenyl)silyl]oxymethyl]-1,3-oxathiolan-5-yl] acetate
139757-72-5

[2-[[tert-butyl(diphenyl)silyl]oxymethyl]-1,3-oxathiolan-5-yl] acetate

favipiravir
259793-96-9

favipiravir

trans-4-(2'-(tert-butyl-diphenylsilyloxy)methyl-1',3'-oxathiolan-5'-yl)-6-fluoro-3,4-dihydro-3-oxo-2-pyrazine-carboxamide

trans-4-(2'-(tert-butyl-diphenylsilyloxy)methyl-1',3'-oxathiolan-5'-yl)-6-fluoro-3,4-dihydro-3-oxo-2-pyrazine-carboxamide

cis-4-(2'-(tert-butyl-diphenylsilyloxy)methyl-1',3'-oxathiolan-5'-yl)-6-fluoro-3,4-dihydro-3-oxo-2-pyrazine-carboxamide

cis-4-(2'-(tert-butyl-diphenylsilyloxy)methyl-1',3'-oxathiolan-5'-yl)-6-fluoro-3,4-dihydro-3-oxo-2-pyrazine-carboxamide

Conditions
ConditionsYield
Stage #1: favipiravir With N,O-bis-(trimethylsilyl)-acetamide In acetonitrile at 20℃; for 1.5h; Inert atmosphere; Cooling with ice;
Stage #2: [2-[[tert-butyl(diphenyl)silyl]oxymethyl]-1,3-oxathiolan-5-yl] acetate With tin(IV) chloride In acetonitrile at 20℃; for 0.333333h; Inert atmosphere; Cooling with ice;
A 30.8%
B 11.8%
2-tert-butyldiphenylsilyloxymethyl-4-acetyl-1,3-oxathiolane

2-tert-butyldiphenylsilyloxymethyl-4-acetyl-1,3-oxathiolane

favipiravir
259793-96-9

favipiravir

cis-4-(2'-(t-butyl-diphenylsilyloxy)methyl-1',3'-oxathiolan-4'-yl)-6-fluoro-3,4-dihydro-3-oxo-2-pyrazine-carboxamide

cis-4-(2'-(t-butyl-diphenylsilyloxy)methyl-1',3'-oxathiolan-4'-yl)-6-fluoro-3,4-dihydro-3-oxo-2-pyrazine-carboxamide

trans-4-(2'-(t-butyl-diphenylsilyloxy)methyl-1',3'-oxathiolan-4'-yl)-6-fluoro-3,4-dihydro-3-oxo-2-pyrazinecarboxamide

trans-4-(2'-(t-butyl-diphenylsilyloxy)methyl-1',3'-oxathiolan-4'-yl)-6-fluoro-3,4-dihydro-3-oxo-2-pyrazinecarboxamide

Conditions
ConditionsYield
Stage #1: favipiravir With N,O-bis-(trimethylsilyl)-acetamide In acetonitrile at 20℃; for 1.5h; Inert atmosphere; Cooling with ice;
Stage #2: 2-tert-butyldiphenylsilyloxymethyl-4-acetyl-1,3-oxathiolane With tin(IV) chloride In acetonitrile at 20℃; for 0.333333h; Inert atmosphere; Cooling with ice;
A 12.7%
B 27%
((3-((methylsulfonyl)oxy)cyclobutyl)methyl)benzoate
929911-63-7

((3-((methylsulfonyl)oxy)cyclobutyl)methyl)benzoate

favipiravir
259793-96-9

favipiravir

C17H16FN3O4

C17H16FN3O4

Conditions
ConditionsYield
Stage #1: favipiravir With sodium hydride In N,N-dimethyl-formamide; mineral oil at 20℃; for 1h;
Stage #2: ((3-((methylsulfonyl)oxy)cyclobutyl)methyl)benzoate In N,N-dimethyl-formamide; mineral oil at 130℃; for 25h;
26%
N,O-bis-(trimethylsilyl)-acetamide
10416-59-8

N,O-bis-(trimethylsilyl)-acetamide

favipiravir
259793-96-9

favipiravir

6-fluoro-3-((trimethylsilyl)oxy)pyrazine-2-carboxamide

6-fluoro-3-((trimethylsilyl)oxy)pyrazine-2-carboxamide

Conditions
ConditionsYield
In acetonitrile at 0 - 20℃; for 1.5h;
favipiravir
259793-96-9

favipiravir

6-fluoro-3-hydroxy-2-pyrazinecarboxamide monosodium salt
1366418-99-6

6-fluoro-3-hydroxy-2-pyrazinecarboxamide monosodium salt

Conditions
ConditionsYield
With sodium hydroxide In water pH=7; Reagent/catalyst; Solvent; pH-value; Temperature;
1-deoxy-1-(methylamino)-D-glucitol
6284-40-8

1-deoxy-1-(methylamino)-D-glucitol

favipiravir
259793-96-9

favipiravir

6-fluoro-3-hydroxy-2-pyrazinecarboxamide meglumine salt
1370365-08-4

6-fluoro-3-hydroxy-2-pyrazinecarboxamide meglumine salt

Conditions
ConditionsYield
In water Concentration; Temperature;

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