Favipiravir is a modified pyrazine analog that was initially approved for therapeutic use in resistant cases of influenza.The antiviral targets RNA-dependent RNA polymerase (RdRp) enzymes, which are necessary for the transcription and replication of viral genomes.Not only does favipiravir inhibit replication of influenza A and B, but the drug has shown promise in the treatment of avian influenza, and may be an alternative option for influenza strains that are resistant to neuramidase inhibitors.Favipiravir has been investigated for the treatment of life-threatening pathogens such as Ebola virus, Lassa virus, and now COVID-19. Reference standards of Favipiravir API,and its pharmacopeial, non pharmacopieal impurities, and stable isotopes are listed below.
Favipiravir
Catalogue No.:PA 06 1540000
CAS :
Molecular Formula : C5H4FN3O2
Molecular Weight : 157.1
6-Chloro-3-hydroxypyrazine-2-carboxamide
Catalogue No.:PA 06 1541000
Molecular Formula : C5H4ClN3O2
Molecular Weight : 173.56
Favipiravir-5-hydroxy
Catalogue No.:PA 06 1541001
Molecular Formula : C5H4FN3O3
Molecular Weight : 173.1
3-Oxo-3,4-dihydropyrazine-2-carboxamide
Catalogue No.:PA 06 1541002
Molecular Formula : C5H5N3O2
Molecular Weight : 139.11
6-Bromo-3-hydroxypyrazine-2-carboxamide
Catalogue No.:PA 06 1541003
Molecular Formula : C5H4BrN3O2
Molecular Weight : 218.01
6-Chloropyrazine-2-carbonitrile
Catalogue No.:PA 06 1541004
Molecular Formula : C5H2ClN3
Molecular Weight : 139.54
6-Fluoropyrazine-2-carbonitrile
Catalogue No.:PA 06 1541005
Molecular Formula : C5H2FN3
Molecular Weight : 123.09
3-Chloro-6-fluoropyrazine-2-carbonitrile
Catalogue No.:PA 06 1541006
Molecular Formula : C5HClFN3
Molecular Weight : 157.53
6-Chloro-3-fluoropyrazine-2-carbonitrile
Catalogue No.:PA 06 1541007
6-Fluoro-3-hydroxypyrazine-2-carboxylic acid
Catalogue No.:PA 06 1541008
Molecular Formula : C5H3FN2O3
Molecular Weight : 158.09
5-Fluoro-3-hydroxypyrazine-2-carbonitrile
Catalogue No.:PA 06 1541009
Molecular Formula : C5H2FN3O
Molecular Weight : 139.09
3-Bromo-5-chloropyrazine-2-carbonitrile
Catalogue No.:PA 06 1541010
Molecular Formula : C5HBrClN3
Molecular Weight : 218.44
3,6-Difluoropyrazine-2-carboxamide
Catalogue No.:PA 06 1541011
Molecular Formula : C5H3F2N3O
Molecular Weight : 159.1
3-Carbamoyl-5-fluoro-2-hydroxypyrazine 1,4-dioxide
Catalogue No.:PA 06 1541012
Molecular Formula : C5H4FN3O4
Molecular Weight : 189.1
2-Carbamoyl-6-fluoro-3-hydroxypyrazine 1-oxide
Catalogue No.:PA 06 1541013
3,6-Dichloropyrazine-2-carbonitrile
Catalogue No.:PA 06 1541014
Molecular Formula : C5HCl2N3
Molecular Weight : 173.98
3,6-Difluoropyrazine-2-carbonitrile
Catalogue No.:PA 06 1541015
Molecular Formula : C5HF2N3
Molecular Weight : 141.08
6-Fluoro-3-hydroxypyrazine-2-carbonitrile
Catalogue No.:PA 06 1541016
3,6-Dihydroxypyrazine-2-carboxamide
Catalogue No.:PA 06 1541017
Molecular Formula : C5H5N3O3
Molecular Weight : 155.03
3-Hydroxy-6-methoxypyrazine-2-carboxamide
Catalogue No.:PA 06 1541018
Molecular Formula : C6H7N3O3
Molecular Weight : 169.14
6-Ethoxy-3-hydroxypyrazine-2-carboxamide
Catalogue No.:PA 06 1541019
Molecular Formula : C7H9N3O3
Molecular Weight : 183.17
Favipiravir D4
Catalogue No.:PA STI 088840
Molecular Formula : C5D4FN3O2
Molecular Weight : 161.13
Favipiravir (IPRS/56/20) - from IPC
Catalogue No.:PA IPRS 56 20
Molecular Formula : NA
Molecular Weight : NA
3-Carbamoyl-5-fluoro-2-hydroxypyrazine 1-oxide
Catalogue No.:PA 06 1541020
6-Fluoro-3-hydroxypyrazine-2-carbonitrile Dibutylamine Salt
Catalogue No.:PA 06 1541021
Molecular Formula : C13H21FN4O
Molecular Weight : 268.34
2-Amino-5-chloro-3-nitropyridine
Catalogue No.:PA 06 1541022
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