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.
stdClass Object ( [pname] => Favipiravir - API Standards [catalogue_number] => PA 06 1540000 [category_ids] => 82,78,76,75 [chemical_name] => [weight] => 157.1 [form] => C5H4FN3O2 [cas] => 259793-96-9 [pslug] => 259793-96-9-favipiravir-api-pa061540000 [latest_product] => 0 [linkproducts] => 0 [offers_id] => [offers_name] => [offers_status] => [offers_start_date] => [offers_end_date] => [pageview] => [offers_slug] => [offers_product_id] => [offers_product_code] => [offers_master_id] => [offer_percentage] => [offers_product_main_cat] => )
Catalogue No.:PA 06 1540000
CAS :
Molecular Formula : C5H4FN3O2
Molecular Weight : 157.1
stdClass Object ( [pname] => 6-Chloro-3-hydroxypyrazine-2-carboxamide [catalogue_number] => PA 06 1541000 [category_ids] => 70,75,76,78,82 [chemical_name] => [weight] => 173.56 [form] => C5H4ClN3O2 [cas] => 259793-90-3 [pslug] => 259793-90-3-6-chloro-3-hydroxypyrazine-2-carboxamide-pa061541000 [latest_product] => 0 [linkproducts] => 0 [offers_id] => [offers_name] => [offers_status] => [offers_start_date] => [offers_end_date] => [pageview] => [offers_slug] => [offers_product_id] => [offers_product_code] => [offers_master_id] => [offer_percentage] => [offers_product_main_cat] => )
Catalogue No.:PA 06 1541000
Molecular Formula : C5H4ClN3O2
Molecular Weight : 173.56
stdClass Object ( [pname] => Favipiravir-5-hydroxy [catalogue_number] => PA 06 1541001 [category_ids] => ,75,76,78,70,82, [chemical_name] => [weight] => 173.1 [form] => C5H4FN3O3 [cas] => 1492021-29-0 [pslug] => 1492021-29-0-favipiravir-5-hydroxy-pa061541001 [latest_product] => 0 [linkproducts] => 0 [offers_id] => [offers_name] => [offers_status] => [offers_start_date] => [offers_end_date] => [pageview] => [offers_slug] => [offers_product_id] => [offers_product_code] => [offers_master_id] => [offer_percentage] => [offers_product_main_cat] => )
Catalogue No.:PA 06 1541001
Molecular Formula : C5H4FN3O3
Molecular Weight : 173.1
stdClass Object ( [pname] => 3-Oxo-3,4-dihydropyrazine-2-carboxamide [catalogue_number] => PA 06 1541002 [category_ids] => ,75,76,78,70,82, [chemical_name] => [weight] => 139.11 [form] => C5H5N3O2 [cas] => 55321-99-8 [pslug] => 55321-99-8-3-oxo-3-4-dihydropyrazine-2-carboxamide-pa061541002 [latest_product] => 0 [linkproducts] => 0 [offers_id] => [offers_name] => [offers_status] => [offers_start_date] => [offers_end_date] => [pageview] => [offers_slug] => [offers_product_id] => [offers_product_code] => [offers_master_id] => [offer_percentage] => [offers_product_main_cat] => )
Catalogue No.:PA 06 1541002
Molecular Formula : C5H5N3O2
Molecular Weight : 139.11
stdClass Object ( [pname] => 6-Bromo-3-hydroxypyrazine-2-carboxamide [catalogue_number] => PA 06 1541003 [category_ids] => ,75,76,78,70,82, [chemical_name] => [weight] => 218.01 [form] => C5H4BrN3O2 [cas] => 259793-88-9 [pslug] => 259793-88-9-6-bromo-3-hydroxypyrazine-2-carboxamide-pa061541003 [latest_product] => 0 [linkproducts] => 0 [offers_id] => [offers_name] => [offers_status] => [offers_start_date] => [offers_end_date] => [pageview] => [offers_slug] => [offers_product_id] => [offers_product_code] => [offers_master_id] => [offer_percentage] => [offers_product_main_cat] => )
Catalogue No.:PA 06 1541003
Molecular Formula : C5H4BrN3O2
Molecular Weight : 218.01
stdClass Object ( [pname] => 6-Chloropyrazine-2-carbonitrile [catalogue_number] => PA 06 1541004 [category_ids] => ,75,76,78,70,82, [chemical_name] => [weight] => 139.54 [form] => C5H2ClN3 [cas] => 6863-74-7 [pslug] => 6863-74-7-6-chloropyrazine-2-carbonitrile-pa061541004 [latest_product] => 0 [linkproducts] => 0 [offers_id] => [offers_name] => [offers_status] => [offers_start_date] => [offers_end_date] => [pageview] => [offers_slug] => [offers_product_id] => [offers_product_code] => [offers_master_id] => [offer_percentage] => [offers_product_main_cat] => )
Catalogue No.:PA 06 1541004
Molecular Formula : C5H2ClN3
Molecular Weight : 139.54
stdClass Object ( [pname] => 6-Fluoropyrazine-2-carbonitrile [catalogue_number] => PA 06 1541005 [category_ids] => ,75,76,78,70,82, [chemical_name] => [weight] => 123.09 [form] => C5H2FN3 [cas] => 356783-46-5 [pslug] => 356783-46-5-6-fluoropyrazine-2-carbonitrile-pa061541005 [latest_product] => 0 [linkproducts] => 0 [offers_id] => [offers_name] => [offers_status] => [offers_start_date] => [offers_end_date] => [pageview] => [offers_slug] => [offers_product_id] => [offers_product_code] => [offers_master_id] => [offer_percentage] => [offers_product_main_cat] => )
Catalogue No.:PA 06 1541005
Molecular Formula : C5H2FN3
Molecular Weight : 123.09
stdClass Object ( [pname] => 3-Chloro-6-fluoropyrazine-2-carbonitrile [catalogue_number] => PA 06 1541006 [category_ids] => ,75,76,78,70,82, [chemical_name] => [weight] => 157.53 [form] => C5HClFN3 [cas] => 356783-49-8 [pslug] => 356783-49-8-3-chloro-6-fluoropyrazine-2-carbonitrile-pa061541006 [latest_product] => 0 [linkproducts] => 0 [offers_id] => [offers_name] => [offers_status] => [offers_start_date] => [offers_end_date] => [pageview] => [offers_slug] => [offers_product_id] => [offers_product_code] => [offers_master_id] => [offer_percentage] => [offers_product_main_cat] => )
Catalogue No.:PA 06 1541006
Molecular Formula : C5HClFN3
Molecular Weight : 157.53
stdClass Object ( [pname] => 6-Chloro-3-fluoropyrazine-2-carbonitrile [catalogue_number] => PA 06 1541007 [category_ids] => ,75,76,78,70,82, [chemical_name] => [weight] => 157.53 [form] => C5HClFN3 [cas] => NA [pslug] => 6-chloro-3-fluoropyrazine-2-carbonitrile-pa061541007 [latest_product] => 0 [linkproducts] => 0 [offers_id] => [offers_name] => [offers_status] => [offers_start_date] => [offers_end_date] => [pageview] => [offers_slug] => [offers_product_id] => [offers_product_code] => [offers_master_id] => [offer_percentage] => [offers_product_main_cat] => )
Catalogue No.:PA 06 1541007
stdClass Object ( [pname] => 6-Fluoro-3-hydroxypyrazine-2-carboxylic acid [catalogue_number] => PA 06 1541008 [category_ids] => ,75,76,78,70,82, [chemical_name] => [weight] => 158.09 [form] => C5H3FN2O3 [cas] => 1079990-21-8 [pslug] => 1079990-21-8-6-fluoro-3-hydroxypyrazine-2-carboxylic-acid-pa061541008 [latest_product] => 0 [linkproducts] => 0 [offers_id] => [offers_name] => [offers_status] => [offers_start_date] => [offers_end_date] => [pageview] => [offers_slug] => [offers_product_id] => [offers_product_code] => [offers_master_id] => [offer_percentage] => [offers_product_main_cat] => )
Catalogue No.:PA 06 1541008
Molecular Formula : C5H3FN2O3
Molecular Weight : 158.09
stdClass Object ( [pname] => 5-Fluoro-3-hydroxypyrazine-2-carbonitrile [catalogue_number] => PA 06 1541009 [category_ids] => ,75,76,78,70,82, [chemical_name] => [weight] => 139.09 [form] => C5H2FN3O [cas] => NA [pslug] => 5-fluoro-3-hydroxypyrazine-2-carbonitrile-pa061541009 [latest_product] => 0 [linkproducts] => 0 [offers_id] => [offers_name] => [offers_status] => [offers_start_date] => [offers_end_date] => [pageview] => [offers_slug] => [offers_product_id] => [offers_product_code] => [offers_master_id] => [offer_percentage] => [offers_product_main_cat] => )
Catalogue No.:PA 06 1541009
Molecular Formula : C5H2FN3O
Molecular Weight : 139.09
stdClass Object ( [pname] => 3-Bromo-5-chloropyrazine-2-carbonitrile [catalogue_number] => PA 06 1541010 [category_ids] => ,75,76,78,70,82, [chemical_name] => [weight] => 218.44 [form] => C5HBrClN3 [cas] => 440124-25-4 [pslug] => 440124-25-4-3-bromo-5-chloropyrazine-2-carbonitrile-pa061541010 [latest_product] => 0 [linkproducts] => 0 [offers_id] => [offers_name] => [offers_status] => [offers_start_date] => [offers_end_date] => [pageview] => [offers_slug] => [offers_product_id] => [offers_product_code] => [offers_master_id] => [offer_percentage] => [offers_product_main_cat] => )
Catalogue No.:PA 06 1541010
Molecular Formula : C5HBrClN3
Molecular Weight : 218.44
stdClass Object ( [pname] => 3,6-Difluoropyrazine-2-carboxamide [catalogue_number] => PA 06 1541011 [category_ids] => ,75,76,78,70,82, [chemical_name] => [weight] => 159.1 [form] => C5H3F2N3O [cas] => 356783-29-4 [pslug] => 356783-29-4-3-6-difluoropyrazine-2-carboxamide-pa061541011 [latest_product] => 0 [linkproducts] => 0 [offers_id] => [offers_name] => [offers_status] => [offers_start_date] => [offers_end_date] => [pageview] => [offers_slug] => [offers_product_id] => [offers_product_code] => [offers_master_id] => [offer_percentage] => [offers_product_main_cat] => )
Catalogue No.:PA 06 1541011
Molecular Formula : C5H3F2N3O
Molecular Weight : 159.1
stdClass Object ( [pname] => 3-Carbamoyl-5-fluoro-2-hydroxypyrazine 1,4-dioxide [catalogue_number] => PA 06 1541012 [category_ids] => ,78,75,70,76,82, [chemical_name] => [weight] => 189.1 [form] => C5H4FN3O4 [cas] => NA [pslug] => 3-carbamoyl-5-fluoro-2-hydroxypyrazine-1-4-dioxide-pa061541012 [latest_product] => 0 [linkproducts] => 0 [offers_id] => [offers_name] => [offers_status] => [offers_start_date] => [offers_end_date] => [pageview] => [offers_slug] => [offers_product_id] => [offers_product_code] => [offers_master_id] => [offer_percentage] => [offers_product_main_cat] => )
Catalogue No.:PA 06 1541012
Molecular Formula : C5H4FN3O4
Molecular Weight : 189.1
stdClass Object ( [pname] => 2-Carbamoyl-6-fluoro-3-hydroxypyrazine 1-oxide [catalogue_number] => PA 06 1541013 [category_ids] => ,78,75,70,76,82, [chemical_name] => [weight] => 173.1 [form] => C5H4FN3O3 [cas] => NA [pslug] => 2-carbamoyl-6-fluoro-3-hydroxypyrazine-1-oxide-pa061541013 [latest_product] => 0 [linkproducts] => 0 [offers_id] => [offers_name] => [offers_status] => [offers_start_date] => [offers_end_date] => [pageview] => [offers_slug] => [offers_product_id] => [offers_product_code] => [offers_master_id] => [offer_percentage] => [offers_product_main_cat] => )
Catalogue No.:PA 06 1541013
stdClass Object ( [pname] => 3,6-Dichloropyrazine-2-carbonitrile [catalogue_number] => PA 06 1541014 [category_ids] => ,78,75,70,76,82, [chemical_name] => [weight] => 173.98 [form] => C5HCl2N3 [cas] => 356783-16-9 [pslug] => 356783-16-9-3-6-dichloropyrazine-2-carbonitrile-pa061541014 [latest_product] => 0 [linkproducts] => 0 [offers_id] => [offers_name] => [offers_status] => [offers_start_date] => [offers_end_date] => [pageview] => [offers_slug] => [offers_product_id] => [offers_product_code] => [offers_master_id] => [offer_percentage] => [offers_product_main_cat] => )
Catalogue No.:PA 06 1541014
Molecular Formula : C5HCl2N3
Molecular Weight : 173.98
stdClass Object ( [pname] => 3,6-Difluoropyrazine-2-carbonitrile [catalogue_number] => PA 06 1541015 [category_ids] => ,78,75,70,76,82, [chemical_name] => [weight] => 141.08 [form] => C5HF2N3 [cas] => 356783-28-3 [pslug] => 356783-28-3-3-6-difluoropyrazine-2-carbonitrile-pa061541015 [latest_product] => 0 [linkproducts] => 0 [offers_id] => [offers_name] => [offers_status] => [offers_start_date] => [offers_end_date] => [pageview] => [offers_slug] => [offers_product_id] => [offers_product_code] => [offers_master_id] => [offer_percentage] => [offers_product_main_cat] => )
Catalogue No.:PA 06 1541015
Molecular Formula : C5HF2N3
Molecular Weight : 141.08
stdClass Object ( [pname] => 6-Fluoro-3-hydroxypyrazine-2-carbonitrile [catalogue_number] => PA 06 1541016 [category_ids] => ,78,75,70,76,82, [chemical_name] => [weight] => 139.09 [form] => C5H2FN3O [cas] => 356783-31-8 [pslug] => 356783-31-8-6-fluoro-3-hydroxypyrazine-2-carbonitrile-pa061541016 [latest_product] => 0 [linkproducts] => 1 [offers_id] => [offers_name] => [offers_status] => [offers_start_date] => [offers_end_date] => [pageview] => [offers_slug] => [offers_product_id] => [offers_product_code] => [offers_master_id] => [offer_percentage] => [offers_product_main_cat] => )
Catalogue No.:PA 06 1541016
stdClass Object ( [pname] => 3,6-Dihydroxypyrazine-2-carboxamide [catalogue_number] => PA 06 1541017 [category_ids] => ,78,75,70,76,82, [chemical_name] => [weight] => 155.03 [form] => C5H5N3O3 [cas] => 2766748-29-0 [pslug] => 2766748-29-0-3-6-dihydroxypyrazine-2-carboxamide-pa061541017 [latest_product] => 0 [linkproducts] => 0 [offers_id] => [offers_name] => [offers_status] => [offers_start_date] => [offers_end_date] => [pageview] => [offers_slug] => [offers_product_id] => [offers_product_code] => [offers_master_id] => [offer_percentage] => [offers_product_main_cat] => )
Catalogue No.:PA 06 1541017
Molecular Formula : C5H5N3O3
Molecular Weight : 155.03
stdClass Object ( [pname] => 3-Hydroxy-6-methoxypyrazine-2-carboxamide [catalogue_number] => PA 06 1541018 [category_ids] => ,75,76,78,70,82, [chemical_name] => [weight] => 169.14 [form] => C6H7N3O3 [cas] => 2460733-77-9 [pslug] => 2460733-77-9-3-hydroxy-6-methoxypyrazine-2-carboxamide-pa061541018 [latest_product] => 0 [linkproducts] => 0 [offers_id] => [offers_name] => [offers_status] => [offers_start_date] => [offers_end_date] => [pageview] => [offers_slug] => [offers_product_id] => [offers_product_code] => [offers_master_id] => [offer_percentage] => [offers_product_main_cat] => )
Catalogue No.:PA 06 1541018
Molecular Formula : C6H7N3O3
Molecular Weight : 169.14
stdClass Object ( [pname] => 6-Ethoxy-3-hydroxypyrazine-2-carboxamide [catalogue_number] => PA 06 1541019 [category_ids] => ,75,76,78,70,82, [chemical_name] => [weight] => 183.17 [form] => C7H9N3O3 [cas] => 2700307-03-3 [pslug] => 2700307-03-3-6-ethoxy-3-hydroxypyrazine-2-carboxamide-pa061541019 [latest_product] => 0 [linkproducts] => 0 [offers_id] => [offers_name] => [offers_status] => [offers_start_date] => [offers_end_date] => [pageview] => [offers_slug] => [offers_product_id] => [offers_product_code] => [offers_master_id] => [offer_percentage] => [offers_product_main_cat] => )
Catalogue No.:PA 06 1541019
Molecular Formula : C7H9N3O3
Molecular Weight : 183.17
stdClass Object ( [pname] => Favipiravir D4 [catalogue_number] => PA STI 088840 [category_ids] => ,98,75,76,78,70,82, [chemical_name] => [weight] => 161.13 [form] => C5D4FN3O2 [cas] => NA [pslug] => favipiravir-d4-pasti088840 [latest_product] => 0 [linkproducts] => 0 [offers_id] => [offers_name] => [offers_status] => [offers_start_date] => [offers_end_date] => [pageview] => [offers_slug] => [offers_product_id] => [offers_product_code] => [offers_master_id] => [offer_percentage] => [offers_product_main_cat] => )
Catalogue No.:PA STI 088840
Molecular Formula : C5D4FN3O2
Molecular Weight : 161.13
stdClass Object ( [pname] => Favipiravir (IPRS/56/20) - from IPC [catalogue_number] => PA IPRS 56 20 [category_ids] => ,75,76,78,70,82, [chemical_name] => [weight] => NA [form] => NA [cas] => NA [pslug] => favipiravir-iprs-56-20-from-ipc-paiprs5620 [latest_product] => 0 [linkproducts] => 0 [offers_id] => [offers_name] => [offers_status] => [offers_start_date] => [offers_end_date] => [pageview] => [offers_slug] => [offers_product_id] => [offers_product_code] => [offers_master_id] => [offer_percentage] => [offers_product_main_cat] => )
Catalogue No.:PA IPRS 56 20
Molecular Formula : NA
Molecular Weight : NA
stdClass Object ( [pname] => 3-Carbamoyl-5-fluoro-2-hydroxypyrazine 1-oxide [catalogue_number] => PA 06 1541020 [category_ids] => ,75,76,78,70,82, [chemical_name] => [weight] => 173.1 [form] => C5H4FN3O3 [cas] => NA [pslug] => 3-carbamoyl-5-fluoro-2-hydroxypyrazine-1-oxide-pa061541020 [latest_product] => 0 [linkproducts] => 0 [offers_id] => [offers_name] => [offers_status] => [offers_start_date] => [offers_end_date] => [pageview] => [offers_slug] => [offers_product_id] => [offers_product_code] => [offers_master_id] => [offer_percentage] => [offers_product_main_cat] => )
Catalogue No.:PA 06 1541020
stdClass Object ( [pname] => 6-Fluoro-3-hydroxypyrazine-2-carbonitrile Dibutylamine Salt [catalogue_number] => PA 06 1541021 [category_ids] => ,82,78,76,75, [chemical_name] => [weight] => 268.34 [form] => C13H21FN4O [cas] => 1137606-76-8 [pslug] => 1137606-76-8-6-fluoro-3-hydroxypyrazine-2-carbonitrile-dibutylamine-salt-pa061541021 [latest_product] => 0 [linkproducts] => 1 [offers_id] => [offers_name] => [offers_status] => [offers_start_date] => [offers_end_date] => [pageview] => [offers_slug] => [offers_product_id] => [offers_product_code] => [offers_master_id] => [offer_percentage] => [offers_product_main_cat] => )
Catalogue No.:PA 06 1541021
Molecular Formula : C13H21FN4O
Molecular Weight : 268.34
stdClass Object ( [pname] => 2-Amino-5-chloro-3-nitropyridine [catalogue_number] => PA 06 1541022 [category_ids] => ,82,78,76, [chemical_name] => [weight] => 173.56 [form] => C5H4ClN3O2 [cas] => 5409-39-2 [pslug] => 5409-39-2-2-amino-5-chloro-3-nitropyridine-pa061541022 [latest_product] => 0 [linkproducts] => 0 [offers_id] => [offers_name] => [offers_status] => [offers_start_date] => [offers_end_date] => [pageview] => [offers_slug] => [offers_product_id] => [offers_product_code] => [offers_master_id] => [offer_percentage] => [offers_product_main_cat] => )
Catalogue No.:PA 06 1541022
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