3,6-Difluoropyrazine-2-Carbonitrile CAS 356783-28-3 Purity ≥99.0% (HPLC) Favipiravir Intermediate COVID-19

Short Description:

Chemical Name: 3,6-Difluoropyrazine-2-Carbonitrile  

CAS: 356783-28-3

Appearance: Pale Yellow to Off-White Powder

Purity: ≥99.0% (HPLC) 

Intermediate of Favipiravir (CAS 259793-96-9) in the treatment of Influenza Virus Infections and COVID-19

High Quality, Commercial Production 

Inquiry: alvin@ruifuchem.com

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Chemical Properties:

Chemical Name 3,6-Difluoropyrazine-2-Carbonitrile
CAS Number 356783-28-3
CAT Number RF-PI227
Stock Status In Stock, Production Scale Up to Tons
Molecular Formula C5HF2N3
Molecular Weight 141.08
Brand Ruifu Chemical


Item Specifications
Appearance Pale Yellow to Off-White Powder
Purity  ≥99.0% 
Loss on Drying ≤1.0%
Residue on ignition ≤0.50%
Single Impurity ≤0.50%
Total Impurities ≤1.0%
Heavy Metals  ≤20ppm
Test Standard Enterprise Standard
Usage Intermediate of Favipiravir (CAS: 259793-96-9)

Package & Storage:

Package: Bottle, Aluminum foil bag, Cardboard drum, 25kg/Drum, or according to customer's requirement.

Storage Condition: Store in sealed containers at cool and dry place; Protect from light, moisture and pest infestation.





3,6-Difluoropyrazine-2-Carbonitrile (CAS: 356783-28-3) is an intermediate of Favipiravir (CAS: 259793-96-9). Favipiravir was approved for marketing in Japan in March 2014 and used for antiviral treatment of influenza A and B. In addition to the influenza virus, the drug also showed good antiviral activity to a variety of RNA viruses, such as Ebola virus, sand virus, Bunia virus, rabies virus, etc. Novel coronavirus pneumonia is inhibited by the latest research.

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