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Favipiravir (T-705) RNA Polymerase Inhibitor

Cat.No.S7975

Favipiravir (T-705) is a potent and selective RNA-dependent RNA polymerase inhibitor, used to treat influenza virus infections.

Chemical Structure

Molecular Weight: 157.1

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Quality Control

Batch: Purity: 99.97%

99.97

Related Targets	HDAC PARP ATM/ATR DNA-PK WRN Topoisomerase PPAR Sirtuin Casein Kinase eIF
Other DNA/RNA Synthesis Inhibitors	CX-5461 (Pidnarulex) B02 SCR7 EED226 RK-33 BMH-21 Triapine (3-AP) Carmofur YK-4-279 Halofuginone

Cell Culture, Treatment & Working Concentration

Cell Lines	Assay Type	Concentration	Incubation Time	Activity Description	PMID
MDCK	Antiviral assay		3 days	Antiviral activity against adamantane-, Influenza A virus (A/Ann Arbor/6/1960(H2N2)) infected in MDCK cells assessed as inhibition of viral replication after 3 days by microscopic analysis using crystal violet stain, EC50 = 0.38 μM.	20350949
MDCK	Antiviral assay		3 days	Antiviral activity against adamantane-resistant , Influenza A virus (A/New York/34/2008(H1N1)) harboring M2 L26I mutant infected in MDCK cells assessed as inhibition of viral replication after 3 days by microscopic analysi, EC50 = 0.19 μM.	20350949
MDCK	Antiviral assay		3 days	Antiviral activity against adamantane-resistant,Influenza A virus (A/Florida/01/2009(H3N2)) harboring M2 S31N mutant infected in MDCK cells assessed as inhibition of viral replication after 3 days by microscopic analysis, EC50 = 0.45 μM.	20350949
MDCK	Antiviral assay		3 days	Antiviral activity against, adamantane-resistant Influenza B virus B/Memphis/20/1996 harboring neuraminidase R152K mutant infected in MDCK cells assessed as inhibition of viral replication after 3 days by microscopic ana, EC50 = 0.57 μM.	20350949
MDCK	Antiviral assay		3 days	Antiviral activity against adamantane-， Influenza A virus (A/Swine/South Dakota/03/2008(H1N1)) infected in MDCK cells assessed as inhibition of viral replication after 3 days by microscopic analysis using crystal violet, EC50 = 0.83 μM.	20350949
MDCK	Antiviral assay		3 days	Antiviral activity against adamantane-susceptible ,Influenza A virus (A/Brazil/1633/2008(H1N1)) harboring neuraminidase Q136K mutant infected in MDCK cells assessed as inhibition of viral replication after 3 days by micros, EC50 = 0.83 μM.	20350949
MDCK	Antiviral assay		3 days	Antiviral activity against adamantane-resistant,Influenza A virus (A/pdm/California/05/2009 (H1N1)) harboring M2 V28I, S31N mutant infected in MDCK cells assessed as inhibition of viral replication after 3 days by micros, EC50 = 0.83 μM.	20350949
MDCK	Antiviral assay		3 days	Antiviral activity against adamantane-resistant,Influenza A virus (A/pdm/New York/18/2009 (H1N1)) harboring M2 V28I, S31N mutant infected in MDCK cells assessed as inhibition of viral replication after 3 days by microsco, EC50 = 0.89 μM.	20350949
MDCK	Antiviral assay		3 days	Antiviral activity against adamantane-, Influenza A virus (A/turkey/Minnesota/833/1980(H4N2)) harboring neuraminidase E119G mutant infected in MDCK cells assessed as inhibition of viral replication after 3 days , EC50 = 0.89 μM.	20350949
MDCK	Antiviral assay		3 days	Antiviral activity against adamantane-, Influenza A virus (A/turkey/Minnesota/833/1980(H4N2)) infected in MDCK cells assessed as inhibition of viral replication after 3 days by microscopic analysis using crystal violet , EC50 = 0.96 μM.	20350949
MDCK	Antiviral assay			Antiviral activity against, adamantane-resistant Influenza A virus (A/Bethesda/956/2006(H3N2)) harboring neuraminidase R292K mutant and M2 S31N mutant infected in MDCK cells assessed as inhibition of viral replication af, EC50 = 1.21 μM.	20350949
MDCK	Antiviral assay		3 days	Antiviral activity against adamantane-resistant ,Influenza A virus (A/pdm/Mexico/4604/2009 (H1N1)) harboring M2 V28I, S31N mutant infected in MDCK cells assessed as inhibition of viral replication after 3 days by microsco, EC50 = 1.21 μM.	20350949
MDCK	Antiviral assay		3 days	Antiviral activity against adamantane-resistant,Influenza B virus B/Memphis/20/1996 infected in MDCK cells assessed as inhibition of viral replication after 3 days by microscopic analysis using crystal violet stain, EC50 = 1.21 μM.	20350949
MDCK	Antiviral assay			Antiviral activity against adamantane，Influenza A virus (A/chicken/Vietnam/NCVD103/2007 clade 2.3.4 (H5N1)) harboring neuraminidase I222T mutant infected in MDCK cells assessed as inhibition of viral replication after, EC50 = 1.27 μM.	20350949
MDCK	Antiviral assay			Inhibition of viral replication of influenza A virus (A/Hong Kong/213/03(H5N1)) and influenza A virus (A/Ann Arbor/6/60(H2N2)) hybrid virus in MDCK cells by virus yield reduction assay, EC90 = 1.3 μM.	17194832
MDCK	Antiviral assay		1 hr	Antiviral activity against Influenza B virus (B/Brisbane/60/2008) infected in MDCK cells assessed as inhibition of virus-induced cytopathogenicity at 1 hr post-infection measured after 3 days by fluorescein-diacetate based fluorimetric analysis, EC50 = 1.32 μM.	23419738
MDCK	Antiviral assay			Antiviral activity against adamantane-, Influenza A virus (A/Vietnam/HN30408/2005 N294S clade 1 (H5N1)) harboring M2 L26I, S31N mutant and neuraminidase N294S mutant infected in MDCK cells assessed as inhibition of viral , EC50 = 1.341 μM.	20350949
MDCK	Antiviral assay		3 days	Antiviral activity against adamantane-resistant,Influenza A virus (A/pdm/California/07/2009 (H1N1)) harboring M2 V28I, S31N mutant infected in MDCK cells assessed as inhibition of viral replication after 3 days by micros, EC50 = 1.4 μM.	20350949
MDCK	Antiviral assay		3 days	Antiviral activity against adamantane-resistant,Influenza B virus (B/Rochester/01/2001) infected in MDCK cells assessed as inhibition of viral replication after 3 days by microscopic analysis using crystal violet stain, EC50 = 1.4 μM.	20350949
MDCK	Antiviral assay		3 days	Antiviral activity against adamantane-， Influenza A virus (A/Georgia/17/2006(H1N1)) infected in MDCK cells assessed as inhibition of viral replication after 3 days by microscopic analysis using crystal violet stain, EC50 = 1.46 μM.	20350949
MDCK	Antiviral assay		3 days	Antiviral activity against adamantane-,Influenza A virus (A/turkey/VA/4529/2002 (H7N2)) infected in MDCK cells assessed as inhibition of viral replication after 3 days by microscopic analysis using crystal violet stain, EC50 = 1.53 μM.	20350949
MDCK	Antiviral assay		3 days	Antiviral activity against adamantane-,Influenza A virus (A/Florida/21/2008(H1N1)) harboring neuraminidase H274Y mutant infected in MDCK cells assessed as inhibition of viral replication after 3 days by microsc, EC50 = 1.59 μM.	20350949
MDCK	Antiviral assay		3 days	Antiviral activity against adamantane-，Influenza A virus (A/duck/Vietnam/NCVD93/2007 clade 2.3.4 (H5N1)) infected in MDCK cells assessed as inhibition of viral replication after 3 days by microscopic analysis using cry, EC50 = 1.59 μM.	20350949
MDCK	Antiviral assay		3 days	Antiviral activity against, adamantane-resistant Influenza B virus (B/Rochester/01/2001) harboring neuraminidase D198N mutant infected in MDCK cells assessed as inhibition of viral replication after 3 days by microscopic, EC50 = 1.72 μM.	20350949
MDCK	Antiviral assay		3 days	Antiviral activity against adamantane-, Influenza A virus (A/Brazil/1067/2008(H1N1)) infected in MDCK cells assessed as inhibition of viral replication after 3 days by microscopic analysis using crystal violet stain, EC50 = 1.85 μM.	20350949
MDCK	Antiviral assay		1 hr	Antiviral activity against Influenza B virus (B/Lee/40) infected in MDCK cells assessed as inhibition of virus-induced cytopathogenicity at 1 hr post-infection measured after 3 days by fluorescein-diacetate based fluorimetric analysis, EC50 = 1.93 μM.	23419738
MDCK	Antiviral assay		1 hr	Antiviral activity against Influenza B virus (B/Panama/45/1990) infected in MDCK cells assessed as inhibition of virus-induced cytopathogenicity at 1 hr post-infection measured after 3 days by fluorescein-diacetate based fluorimetric analysis, EC50 = 1.94 μM.	23419738
MDCK	Antiviral assay		3 days	Antiviral activity against adamantane-resistant，Influenza A virus (A/pdm/California/04/2009 (H1N1)) harboring M2 V28I, S31N mutant infected in MDCK cells assessed as inhibition of viral replication after 3 days by micros, EC50 = 1.97 μM.	20350949
MDCK	Antiviral assay		3 days	Antiviral activity against adamantane-,Influenza A virus (A/swine/Michigan/09/2007 (H1N2)) harboring M2 V27I, V28D mutant infected in MDCK cells assessed as inhibition of viral replication after 3 days by microscopic a, EC50 = 2.23 μM.	20350949
MDCK	Antiviral assay		3 days	Antiviral activity against adamantane-,Influenza A virus (A/Ecuador/5179/2008(H1N1)) infected in MDCK cells assessed as inhibition of viral replication after 3 days by microscopic analysis using crystal violet stain, EC50 = 2.48 μM.	20350949
MDCK	Antiviral assay		3 days	Antiviral activity against adamantane-,Influenza A virus (A/Georgia/20/2006(H1N1)) harboring neuraminidase H274Y mutant infected in MDCK cells assessed as inhibition of viral replication after 3 days by microsc, EC50 = 2.55 μM.	20350949
MDCK	Antiviral assay			Inhibition of viral replication of influenza A virus (A/Hong Kong/213/03(H5N1)) and influenza A virus (A/Ann Arbor/6/60(H2N2)) hybrid virus in MDCK cells by neutral red uptake assay, EC50 = 2.6 μM.	17194832
MDCK	Antiviral assay			Inhibition of influenza A virus (A/duck/Minnesota/1525/1981 (H5N1)) replication in MDCK cells by virus yield reduction assay, EC90 = 2.6 μM.	17194832
MDCK	Antiviral assay		24 hrs	Antiviral activity against Influenza A virus A/WSN/33(H1N1) infected in MDCK cells assessed as inhibition of neuraminidase activity using 2'-(4-methylumbelliferyl)-alpha-D-N-acetylneuraminic acid substrate pretreated with cells for 24 hrs followed by vira, EC50 = 2.7 μM.	27120583
MDCK	Antiviral assay		1 hr	Antiviral activity against Influenza B virus (B/Taiwan/2/62) infected in MDCK cells assessed as inhibition of virus-induced cytopathogenicity at 1 hr post-infection measured after 3 days by fluorescein-diacetate based fluorimetric analysis, EC50 = 2.84 μM.	23419738
MDCK	Antiviral assay		3 days	Antiviral activity against adamantane-resistant,Influenza A virus (A/Wisconsin/16/2008(H1N1)) harboring neuraminidase H274Y mutant infected in MDCK cells assessed as inhibition of viral replication after 3 days by micros, EC50 = 2.87 μM.	20350949
MDCK	Antiviral assay		3 days	Antiviral activity against adamantane-, Influenza A virus (A/Idaho/01/2009(H1N1)) harboring neuraminidase H274Y mutant infected in MDCK cells assessed as inhibition of viral replication after 3 days by microscopic analysi, EC50 = 2.93 μM.	20350949
MDCK	Antiviral assay			Antiviral activity against, adamantane-resistant Influenza A virus (A/Luhansk/18/2008(H1N1)) harboring neuraminidase H274Y mutant and M2 G34E mutant infected in MDCK cells assessed as inhibition of viral replication afte, EC50 = 2.93 μM.	20350949
MDCK	Antiviral assay		3 days	Antiviral activity against adamantane-,Influenza B virus (B/Illinois/03/2008) harboring neuraminidase E119A mutant infected in MDCK cells assessed as inhibition of viral replication after 3 days by microscopic analysis u, EC50 = 3 μM.	20350949
MDCK	Antiviral assay		3 days	Antiviral activity against adamantane-,Influenza A virus (A/Washington/10/2008(H1N1)) harboring M2 S31N mutant infected in MDCK cells assessed as inhibition of viral replication after 3 days by microscopic anal, EC50 = 3.25 μM.	20350949
MDCK	Antiviral assay			Antiviral activity against adamantane-susceptible , Influenza A virus (A/duck/Vietnam/NCVD94/2007 clade 2.3.4 (H5N1)) harboring neuraminidase I117V mutant infected in MDCK cells assessed as inhibition of viral replication a, EC50 = 3.38 μM.	20350949
MDCK	Antiviral assay		3 days	Antiviral activity against adamantane-,Influenza A virus (A/California/27/2007(H1N1)) infected in MDCK cells assessed as inhibition of viral replication after 3 days by microscopic analysis using crystal violet stain, EC50 = 3.63 μM.	20350949
MDCK	Antiviral assay			Inhibition of viral replication of influenza A virus (A/Vietnam/1203/2004 (H5N1)) and influenza A virus (A/Ann Arbor/6/60(H2N2)) hybrid virus in MDCK cells by virus yield reduction assay, EC90 = 3.8 μM.	17194832
MDCK	Antiviral assay			Antiviral activity against, adamantane-resistant Influenza A virus (A/Texas/12/2007 (clone)(H3N2)) harboring neuraminidase E119I mutant and harboring M2 S31N mutant infected in MDCK cells assessed as inhibition of viral , EC50 = 3.95 μM.	20350949
MDCK	Antiviral assay		3 days	Antiviral activity against adamantane-resistant, Influenza B virus (B/Illinois/47/2005) infected in MDCK cells assessed as inhibition of viral replication after 3 days by microscopic analysis using crystal violet stain, EC50 = 4.01 μM.	20350949
MDCK	Antiviral assay		3 days	Antiviral activity against adamantane-resistant,Influenza A virus (A/New Hampshire/01/2009(H3N2)) harboring M2 S31N mutant infected in MDCK cells assessed as inhibition of viral replication after 3 days by microscopic an, EC50 = 4.08 μM.	20350949
MDCK	Antiviral assay			Antiviral activity against, adamantane-resistant Influenza A virus (A/Vietnam/HN30408/2005 H274Y clade 1 (H5N1)) harboring M2 L26I, S31N mutant and neuraminidase H274Y mutant infected in MDCK cells assessed as inhibition, EC50 = 4.14 μM.	20350949
MDCK	Antiviral assay		3 days	Antiviral activity against adamantane-resistant,Influenza A virus (A/Massachusetts/03/2009(H3N2)) harboring M2 S31N mutant infected in MDCK cells assessed as inhibition of viral replication after 3 days by microscopic an, EC50 = 4.2 μM.	20350949
MDCK	Antiviral assay		3 days	Antiviral activity against adamantane-resistant,Influenza A virus (A/Washington/01/2007(H3N2)) harboring M2 S31N mutant infected in MDCK cells assessed as inhibition of viral replication after 3 days by microscopic analy, EC50 = 4.46 μM.	20350949
MDCK	Antiviral assay			Inhibition of influenza A virus (A/duck/Minnesota/1525/1981 (H5N1)) replication in MDCK cells by neutral red uptake assay, EC50 = 4.5 μM.	17194832
MDCK	Antiviral assay		3 days	Antiviral activity against adamantane-,Influenza A virus (A/Swine/Texas/14/2008 (H1N1)) harboring M2 V27T, V28D mutant infected in MDCK cells assessed as inhibition of viral replication after 3 days by microscopic anal, EC50 = 4.52 μM.	20350949
MDCK	Antiviral assay		3 days	Antiviral activity against adamantane-susceptible,Influenza A virus (A/Santiago/5248/2008(H1N1)) harboring neuraminidase D198E mutant infected in MDCK cells assessed as inhibition of viral replication after 3 days by micr, EC50 = 4.7 μM.	20350949
MDCK	Antiviral assay		1 hr	Antiviral activity against Influenza A virus (A/Hong kong/8/1968(H2N3)) infected in MDCK cells assessed as inhibition of virus-induced cytopathogenicity at 1 hr post-infection measured after 3 days by fluorescein-diacetate based fluorimetric analysis, EC50 = 4.71 μM.	23419738
MDCK	Antiviral assay		3 days	Antiviral activity against adamantane-,Influenza A virus (A/New Jersey/15/2007(H1N1)) harboring neuraminidase H274Y mutant infected in MDCK cells assessed as inhibition of viral replication after 3 days by micr, EC50 = 4.9 μM.	20350949
Vero	Antiviral assay		7 to 8 days	Antiviral activity against Junin virus Candid-1 in Vero cells assessed as inhibition of virus-induced visual cytopathic effect after 7 to 8 days, EC50 = 5 μM.	17606691
MDCK	Antiviral assay		3 days	Antiviral activity against adamantane-,Influenza A virus (A/North Carolina/02/ 2009(H1N1)) harboring M2 S31N mutant infected in MDCK cells assessed as inhibition of viral replication after 3 days by microscopic, EC50 = 5.03 μM.	20350949
MDCK	Antiviral assay		3 days	Antiviral activity against, adamantane-resistant Influenza B virus (B/Michigan/20/2005) harboring neuraminidase H274Y mutant infected in MDCK cells assessed as inhibition of viral replication after 3 days by microscopic , EC50 = 5.03 μM.	20350949
MDCK	Antiviral assay		3 days	Antiviral activity against adamantane-resistant,Influenza A virus (A/Vietnam/1203/2004 clade 1 (H5N1)) harboring M2 L26I, S31N mutant infected in MDCK cells assessed as inhibition of viral replication after 3 days by mic, EC50 = 5.22 μM.	20350949
MDCK	Antiviral assay			Antiviral activity agains, adamantane-resistant Influenza A virus (A/Texas/12/2007 (clone)(H3N2)) harboring neuraminidase E119V mutant and harboring M2 S31N mutant infected in MDCK cells assessed as inhibition of viral , EC50 = 5.22 μM.	20350949
MDCK	Antiviral assay		3 days	Antiviral activity against adamantane-resistant Influenza B virus (B/New York/22/2008) infected in MDCK cells assessed as inhibition of viral replication after 3 days by microscopic analysis using crystal violet stain, EC50 = 5.3 μM.	20350949
MDCK	Antiviral assay		3 days	Antiviral activity against, adamantane-resistant Influenza A virus (A/Wuhan/395/1995-like (H3N2)) harboring neuraminidase E119V mutant infected in MDCK cells assessed as inhibition of viral replication after 3 days by mi, EC50 = 5.41 μM.	20350949
MDCK	Antiviral assay		3 days	Antiviral activity against adamantane-resistant, Influenza A virus (A/Wuhan/395/1995-like (H3N2)) infected in MDCK cells assessed as inhibition of viral replication after 3 days by microscopic analysis using crystal viole, EC50 = 5.99 μM.	20350949
Vero	Antiviral assay		7 to 8 days	Antiviral activity against Pichinde virus An 4763 in Vero cells assessed as inhibition of virus-induced visual cytopathic effect after 7 to 8 days, EC50 = 6 μM.	17606691
Vero	Antiviral assay		7 to 8 days	Antiviral activity against Tacaribe virus TRVL11573 in Vero cells assessed as inhibition of virus-induced visual cytopathic effect after 7 to 8 days, EC50 = 6 μM.	17606691
MDCK	Antiviral assay			Antiviral activity against, adamantane-resistant Influenza A virus (A/pdm/Washington/29/2009 (H1N1)) harboring M2 V28I, S31N mutant and neuraminidase H274Y mutant infected in MDCK cells assessed as inhibition of viral re, EC50 = 6.62 μM.	20350949
MDCK	Antiviral assay	1 hr	3 days	Antiviral activity against Influenza A virus (A/Taiwan/1/1986(H1N1)) infected in MDCK cells assessed as inhibition of virus-induced cytopathogenicity at 1 hr post-infection measured after 3 days by fluorescein-diacetate based fluorimetric analysis, EC50 = 6.95 μM.	23419738
MDCK	Antiviral assay			Inhibition of Influenza A virus (A/gull/Pennsylvania/4175/83 (H5N1)) replication in MDCK cells by virus yield reduction assay, EC90 = 7.7 μM.	17194832
MDCK	Antiviral assay		3 days	Antiviral activity against Influenza virus B/Ned/537/05 infected in MDCK cells assessed as reduction in viral replication at 3 days post infection by formazan-based MTS assay, EC50 = 8.3 μM.	29906392
MDCK	Antiviral assay		3 days	Antiviral activity against Influenza virus B/Ned/537/05 infected in MDCK cells assessed as reduction in viral replication at 3 days post infection by microscopic analysis, EC50 = 9 μM.	29906392
MDCK	Antiviral assay		3 days	Antiviral activity against adamantane-resistant,Influenza A virus (A/New York/107/2003(H7N2)) harboring M2 V28A, S31N mutant infected in MDCK cells assessed as inhibition of viral replication after 3 days by microscopic , EC50 = 10.2 μM.	20350949
MDCK	Antiviral assay			Inhibition of Influenza A virus (A/gull/Pennsylvania/4175/83 (H5N1)) replication in MDCK cells by neutral red uptake assay, EC50 = 11.5 μM.	17194832
MDCK	Antiviral assay			Inhibition of viral replication of influenza A virus (A/Vietnam/1203/2004 (H5N1)) and influenza A virus (A/Ann Arbor/6/60(H2N2)) hybrid virus in MDCK cells by neutral red uptake assay, EC50 = 12.1 μM.	17194832
Vero-A	Antiviral assay			Antiviral activity against Chikungunya virus venturini isolate (Italy 2008) infected in African green monkey Vero-A cells assessed as inhibition of viral-induced cytopathic effect measured on day 7 post infection by MTS/PMS assay, EC50 = 16 μM.	28689975
MDCK	Antiviral assay			Antiviral activity against oseltamivir-susceptible, adamantane-resistant Influenza A virus (A/pdm/Illinois/10/2009(H1N1)) harboring M2 V28I, S31N mutant and neuraminidase H274Y mutant infected in MDCK cells assessed as inhibition of viral repli, EC50 = 22.48 μM.	20350949
MDCK	Antiviral assay		3 days	Antiviral activity against Influenza virus A/X-31 infected in MDCK cells assessed as reduction in viral replication at 3 days post infection by microscopic analysis, EC50 = 24 μM.	29906392
Vero-A	Antiviral assay			Antiviral activity against Chikungunya virus 899 infected in African green monkey Vero-A cells assessed as inhibition of viral-induced cytopathic effect measured on day 7 post infection by MTS/PMS assay, EC50 = 25 μM.	28689975
Vero-A	Antiviral assay			Antiviral activity against Chikungunya virus LR2006-OPY1 infected in African green monkey Vero-A cells assessed as inhibition of viral-induced cytopathic effect measured on day 7 post infection by MTS/PMS assay, EC50 = 25 μM.	28689975
MDCK	Antiviral assay		3 days	Antiviral activity against Influenza virus A/X-31 infected in MDCK cells assessed as reduction in viral replication at 3 days post infection by formazan-based MTS assay, EC50 = 26 μM.	29906392
MDCK	Antiviral assay			Antiviral activity against 0.001 MOI adamantane-resistant,oseltamivir-susceptible Influenza A virus (A/pdm/Mexico/4604/2009(H1N1)) harboring M2 V28I, S31N mutant infected in MDCK cells assessed as determination of viral titer in cell culture at, NULL = NULL μM.	20350949
MDCK	Antiviral assay			Antiviral activity against 0.001 MOI adamantane-resistant,oseltamivir-susceptible Influenza A virus (A/pdm/California/04/2009(H1N1)) harboring M2 V28I, S31N mutant infected in MDCK cells assessed as determination of viral titer in cell culture , NULL = NULL μM.	20350949
MDCK	Antiviral assay	128 uM		Antiviral activity against adamantane-resistant,oseltamivir-susceptible Influenza A virus (A/pdm/Mexico/4604/2009(H1N1)) harboring M2 V28I, S31N mutant infected in MDCK cells assessed as determination of viral titer in cell culture at 128 uM af, NULL = NULL μM.	20350949
MDCK	Antiviral assay	128 uM		Antiviral activity against adamantane-resistant,oseltamivir-susceptible Influenza A virus (A/pdm/California/04/2009(H1N1)) harboring M2 V28I, S31N mutant infected in MDCK cells assessed as determination of viral titer in cell culture at 128 uM , NULL = NULL μM.	20350949
Vero	Antiviral assay	6400 uM	up to 12 hrs	Antiviral activity against Yellow fever virus 17D infected in African green monkey Vero cells assessed as time required for inhibition of viral replication at 6400 uM up to 12 hrs post-viral infection, NULL = NULL μM.	18955536
MDCK	Antiviral assay		0 to 2 hrs	Inhibition of influenza A virus infected in MDCK cells assessed as inhibition of viral load treated with compound at 0 to 2 hrs post-infection by RT-qPCR method based time of addition assay, NULL = NULL μM.	30192544
MDCK	Antiviral assay		5 to 8 hrs	Inhibition of influenza A virus infected in MDCK cells assessed as inhibition of viral load treated with compound at 5 to 8 hrs post-infection by RT-qPCR method based time of addition assay, NULL = NULL μM.	30192544
MDCK	Antiviral assay		0 to 10 hrs	Inhibition of influenza A virus infected in MDCK cells assessed as inhibition of viral load treated with compound at 0 to 10 hrs post-infection by RT-qPCR method based time of addition assay, NULL = NULL μM.	30192544
MDCK	Antiviral assay		2 to 5 hrs	Inhibition of influenza A virus infected in MDCK cells assessed as inhibition of viral load treated with compound at 2 to 5 hrs post-infection by RT-qPCR method based time of addition assay, NULL = NULL μM.	30192544
MDCK	Antiviral assay	10 uM	up to 8 hrs	Antiviral activity against Influenza A virus (A/chicken/Hubei/327/2004(H5N1)) infected in MDCK cells assessed as inhibition of early stages of viral replication at 10 uM up to 8 hrs by crystal violet staining based plaque reduction assay dependent time-of, NULL = NULL μM.	30292897
MDCK	Antiviral assay	100 uM	12 hrs	Antiviral activity against Influenza virus A/X-31 infected in MDCK cells assessed as inhibition of one cycle viral RNA synthesis at 100 uM preincubated with cells for 12 hrs followed by viral infection measured after 10 hrs post infection by RT-qPCR metho, NULL = NULL μM.	29906392
MDCK	Antiviral assay	250 uM	10 hrs	Antiviral activity against Influenza virus A/X-31 infected in MDCK cells assessed as inhibition of one cycle viral RNA sytheis at 250 uM added together with virus and measured at 10 hrs post infection by RT-qPCR method, NULL = NULL μM.	29906392
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Solubility

In vitro
Batch:

DMSO : 31 mg/mL (197.32 mM)
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO.)

Water : 2 mg/mL

Ethanol : 2 mg/mL

Molarity Calculator

Mass	Concentration	Volume	Molecular Weight
Mass value Mass unit	Concentration value Concentration unit	Volume value Volume unit	Molecular weight (g/mol)

Dilution Calculator Molecular Weight Calculator

In vivo batch selection In vivo Batch:
Homogeneous suspension	CMC-NA	≥5mg/ml	Taking the 1 mL working solution as an example, add 5 mg of this product to 1 ml of CMC-Na solution, mix evenly to obtain a homogeneous suspension with a final concentration of 5 mg/ml.
Clear solution	5%DMSO 1 40%PEG300 2 5%Tween80 3 50%ddH2O Validated by Selleck labs. Should you need adjustments to this formulation, contact our sales team for custom testing.	1.550mg/ml (9.87mM)	Taking the 1 mL working solution as an example, add 50 μL of 31 mg/ml clarified DMSO stock solution to 400 μL of PEG300, mix evenly to clarify it; add 50 μL of Tween80 to the above system, mix evenly to clarify; then continue to add 500 μL of ddH2O to adjust the volume to 1 mL. The mixed solution should be used immediately for optimal results.
Clear solution	5% DMSO 1 95% Corn oil Validated by Selleck labs. Should you need adjustments to this formulation, contact our sales team for custom testing.	1.550mg/ml (9.87mM)	Taking the 1 mL working solution as an example, add 50 μL of 31 mg/ml clear DMSO stock solution to 950 μL of corn oil and mix evenly. The mixed solution should be used immediately for optimal results.
Homogeneous suspension	CMC-NA	≥5mg/ml	Taking the 1 mL working solution as an example, add 5 mg of this product to 1 ml of CMC-Na solution, mix evenly to obtain a homogeneous suspension with a final concentration of 5 mg/ml.
Homogeneous suspension	CMC-NA	≥5mg/ml	Taking the 1 mL working solution as an example, add 5 mg of this product to 1 ml of CMC-Na solution, mix evenly to obtain a homogeneous suspension with a final concentration of 5 mg/ml.
Homogeneous suspension	CMC-NA	≥5mg/ml	Taking the 1 mL working solution as an example, add 5 mg of this product to 1 ml of CMC-Na solution, mix evenly to obtain a homogeneous suspension with a final concentration of 5 mg/ml.
Homogeneous suspension	CMC-NA	≥5mg/ml	Taking the 1 mL working solution as an example, add 5 mg of this product to 1 ml of CMC-Na solution, mix evenly to obtain a homogeneous suspension with a final concentration of 5 mg/ml.

In vivo Formulation Calculator (Clear solution)

Step 1: Enter information below (Recommended: An additional animal making an allowance for loss during the experiment)

Dosage: mg/kg

Average weight of animals: g

Dosing volume per animal: μL

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Step 2: Enter the in vivo formulation (This is only the calculator, not formulation. Please contact us first if there is no in vivo formulation at the solubility Section.)

% DMSO

% Tween 80

% ddH₂O

% DMSO

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Working concentration: mg/ml;

Method for preparing DMSO master liquid: mg drug pre-dissolved in μL DMSO ( Master liquid concentration mg/mL, Please contact us first if the concentration exceeds the DMSO solubility of the batch of drug. )

Method for preparing in vivo formulation: Take μL DMSO master liquid, next addμL PEG300, mix and clarify, next addμL Tween 80, mix and clarify, next add μL ddH₂O, mix and clarify.

Method for preparing in vivo formulation: Take μL DMSO master liquid, next add μL Corn oil, mix and clarify.

Note: 1. Please make sure the liquid is clear before adding the next solvent.
2. Be sure to add the solvent(s) in order. You must ensure that the solution obtained, in the previous addition, is a clear solution before proceeding to add the next solvent. Physical methods such
as vortex, ultrasound or hot water bath can be used to aid dissolving.

Chemical Information, Storage & Stability

Molecular Weight	157.1	Formula	C₅H₄FN₃O₂	Storage (From the date of receipt)	3 years-20°Cpowder
CAS No.	259793-96-9	Download SDF		Storage of Stock Solutions	1 year-80°Cin solvent 1 month-20°Cin solvent
Synonyms	N/A			Smiles	C1=C(N=C(C(=O)N1)C(=O)N)F

Mechanism of Action

Targets/IC₅₀/Ki	RNA-dependent RNA polymerase
In vitro	Favipiravir (T-705) shows anti-influenza virus activities with IC50 ranged from 0.013 to 0.48 μg/ml for the influenza A viruses, from 0.039 to 0.089 μg/ml for the influenza B viruses, and from 0.030 to 0.057 μg/ml for the influenza C viruses. In mammalian cell lines (MDCK cells, Vero cells, HEL cells, A549 cells, HeLa cells, and HEp-2 cells), it shows no cytotoxicity at concentrations up to 1,000 μg/ml. In MDCK cells inoculated with seasonal influenza A (H1N1) viruses, this compound induces lethal mutagenesis.
In vivo	Favipiravir (T-705) protects influenza virus-infected mice from death when administered at 200 mg/kg/day (p.o.). In mice experimentally infected with Ebola virus, this compound efficiently blocks viral production, reaching an antiviral effectiveness of 95% and 99.6% at 2 and 6 days after initiation of treatment, respectively.
References	[1] https://pubmed.ncbi.nlm.nih.gov/11897578/ [2] https://pubmed.ncbi.nlm.nih.gov/23325689/ [3] https://pubmed.ncbi.nlm.nih.gov/26343011/

Applications

Methods	Biomarkers	PMID
Growth inhibition assay	Survival Cell viability	26711718
IHC	H&E Staining NiV nucleoprotein LASV antigen H&E stain	29765101
Immunofluorescence	rNiV-Gluc	29765101

Clinical Trial Information

(data from https://clinicaltrials.gov, updated on 2024-05-22)

NCT Number	Recruitment	Conditions	Sponsor/Collaborators	Start Date	Phases
NCT06024421	Recruiting	Infectious Disease\|Pharmacology	Institut National de la Santé Et de la Recherche Médicale France\|FUJIFILM Toyama Chemical Co. Ltd.	April 2024	Phase 1
NCT05940545	Recruiting	CCHF	Liverpool School of Tropical Medicine	July 12 2023	Phase 1\|Phase 2
NCT04907682	Completed	Lassa Fever	Bernhard Nocht Institute for Tropical Medicine\|University of Hamburg-Eppendorf\|Alliance for International Medical Action\|Institut National de la Santé Et de la Recherche Médicale France\|University of Bordeaux\|Federal Medical Centre Owo\|Irrua Specialist Teaching Hospital	July 30 2021	Phase 2

Tech Support

Handling Instructions

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