Name: Nitazoxanide
Brand: Selleck Chemicals
SKU: S1627
Availability: InStock
Rating: 5 (19 reviews)

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Quality Control

Batch: Purity: 99.99%

99.99

Related Targets	Integrase Bacterial Antibiotics Anti-infection Fungal Antiviral COVID-19 Parasite Reverse Transcriptase HIV
Other Influenza Virus Inhibitors	Arbidol HCl Nucleozin (-)-Arctigenin Chebulinic acid Adamantane D-Pinitol Cetylpyridinium chloride monohydrate

Cell Culture, Treatment & Working Concentration

Cell Lines	Assay Type	Incubation Time	Activity Description	PMID
HepG2(2.2.15)	Antiviral assay		Antiviral activity against Hepatitis B virus infected in human HepG2(2.2.15) cells assessed as decrease in extracellular viral DNA measured 24 hrs after last dose, EC50=0.12μM	21553812
HepG2(2.2.15)	Antiviral assay		Antiviral activity against HBV infected in human HepG2(2.2.15) cells assessed as inhibition of extracellular viral DNA level, IC50=0.12μM	28383274
Ava5	Antiviral assay	3 days	Antiviral activity against HCV genotype 1b infected in Ava5 cells assessed as inhibition of viral replication after 3 days by blot hybridization analysis, EC50=0.21μM	22059983
Huh7.5	Antiviral assay	3 days	Antiviral activity against HCV genotype 1a infected in Huh7.5 cells assessed as inhibition of viral replication after 3 days by blot hybridization analysis, EC50=0.33μM	22059983
HepG2(2.2.15)	Antiviral assay		Antiviral activity against Hepatitis B virus infected in human HepG2(2.2.15) cells assessed as decrease in intracellular viral DNA measured 24 hrs after last dose, EC50=0.59μM	21553812
HepG2(2.2.15)	Antiviral assay		Antiviral activity against Hepatitis B virus infected in human HepG2(2.2.15) cells assessed as decrease in extracellular viral DNA measured 24 hrs after last dose, EC90=0.83μM	21553812
Ava5	Antiviral assay	3 days	Antiviral activity against HCV genotype 1b infected in Ava5 cells assessed as inhibition of viral replication after 3 days by blot hybridization analysis, EC90=0.93μM	22059983
Huh7.5	Antiviral assay	3 days	Antiviral activity against HCV genotype 1a infected in Huh7.5 cells assessed as inhibition of viral replication after 3 days by blot hybridization analysis, EC90=1.1μM	22059983
BHK-21	Antiviral assay		Antiviral activity against Chikungunya virus 0611aTw infected in BHK-21 cells by RT-qPCR analysis, EC50=1.96μM	28689975
HepG2(2.2.15)	Antiviral assay		Antiviral activity against Hepatitis B virus infected in human HepG2(2.2.15) cells assessed as decrease in intracellular viral DNA measured 24 hrs after last dose, EC90=2.1μM	21553812
HCT8	Antiparasitic assay	48 hrs	Antiparasitic activity against Cryptosporidium parvum SPL infected in human HCT8 cells incubated for 48 hrs by FITC/DAPI staining based fluorescence assay, EC50=2.3μM	29469575
Vero E6	Function assay	48 hrs	IC50 for antiviral activity against SARS-CoV-2 in the Vero E6 cell line at 48 h by immunofluorescence-based assay (detecting the viral NP protein in the nucleus of the Vero E6 cells), IC50=2.81838μM	32353859
HCT8	Antiparasitic assay	48 hrs	Antiparasitic activity against Cryptosporidium parvum BGF infected in human HCT8 cells incubated for 48 hrs by FITC/DAPI staining based fluorescence assay, EC50=2.9μM	29469575
BHK-21	Antiviral assay		Antiviral activity against Chikungunya virus infected in BHK-21 cells by RT-qPCR analysis, EC50=2.96μM	28689975
U2OS	Antiviral assay		Antiviral activity against Chikungunya virus infected in human U2OS cells by RT-qPCR analysis, EC50=3.01μM	28689975
HCT8	Antiparasitic assay		Antiparasitic activity against Cryptosporidium parvum in HCT8 cells, IC50=3.25μM	16480281
HCT-8	Antimicrobial assay		Antimicrobial activity against Cryptosporidium parvum infected in human HCT-8 cells, IC50=3.8μM	18591280
BHK-21	Antiviral assay		Antiviral activity against Chikungunya virus 0810bTw infected in BHK-21 cells by RT-qPCR analysis, EC50=4.95μM	28689975
Vero	Cytotoxicity assay	48 hrs	Cytotoxicity against african green monkey Vero cells assessed as cell viability after 48 hrs by WST-1 assay, IC50=10.74μM	23787289
BHK21	Cytotoxicity assay	16 hrs	Cytotoxicity against BHK21 cells assessed as reduction in cell viability after 16 hrs by CCK-8 assay, CC50=25μM	28689975
U2OS	Cytotoxicity assay	16 hrs	Cytotoxicity against human U2OS cells assessed as reduction in cell viability after 16 hrs by CCK-8 assay, CC50=25μM	28689975
Ava5	Cytotoxicity assay	3 days	Cytotoxicity against human Ava5 cells after 3 days by neutral red dye assay, CC50=35μM	22059983
Huh7.5	Cytotoxicity assay	3 days	Cytotoxicity against human Huh7.5 cells after 3 days by neutral red dye assay, CC50=49μM	22059983
DAOY	qHTS assay		qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for DAOY cells	29435139
SJ-GBM2	qHTS assay		qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for SJ-GBM2 cells	29435139
A673	qHTS assay		qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for A673 cells	29435139
BT-37	qHTS assay		qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for BT-37 cells	29435139
NB-EBc1	qHTS assay		qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for NB-EBc1 cells	29435139
Saos-2	qHTS assay		qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for Saos-2 cells	29435139
NB1643	qHTS assay		qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for NB1643 cells	29435139
LAN-5	qHTS assay		qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for LAN-5 cells	29435139
BT-12	qHTS assay		qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for BT-12 cells	29435139
Rh18	qHTS assay		qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for Rh18 cells	29435139
OHS-50	qHTS assay		qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for OHS-50 cells	29435139
RD	qHTS assay		qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for RD cells	29435139
Click to View More Cell Line Experimental Data

Solubility

In vitro
Batch:

DMSO : 62 mg/mL (201.77 mM)
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO.)

Ethanol : 62 mg/mL

Water : Insoluble

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.
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.	1.500mg/ml (4.88mM)	Taking the 1 mL working solution as an example, add 50 μL of 30 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.	1.000mg/ml (3.25mM)	Taking the 1 mL working solution as an example, add 50 μL of 20 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.

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

Number of animals:

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

+

%

Calculation results:

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	307.28	Formula	C₁₂H₉N₃O₅S	Storage (From the date of receipt)	3 years-20°Cpowder
CAS No.	55981-09-4	Download SDF		Storage of Stock Solutions	1 year-80°Cin solvent 1 month-20°Cin solvent
Synonyms	NTZ, NSC 697855			Smiles	CC(=O)OC1=CC=CC=C1C(=O)NC2=NC=C(S2)[N+](=O)[O-]

Mechanism of Action

Targets/IC₅₀/Ki	PFOR mTORC1
In vitro	Nitazoxanide reduces parasite growth in cell culture by more than 90% with little evidence of drug-associated cytotoxicity. This compound is a new thiazolide antiparasitic agent that shows excellent in vitro activity against a wide variety of protozoa and helminths. It and its metabolite tizoxanide are more active in vitro than metronidazole against G. intestinalis, E. histolytica and T. vaginalis. This agent exhibits potent inhibition of both HBV and HCV replication. It potentiates the effect of subsequent treatment with this compound plus IFN, but not this chemical plus 2'CmeC, in HCV replicon-containing cells. This chemical induces reductions in several HBV proteins (HBsAg, HBeAg, HBcAg) produced by 2.2.15 cells, but does not affect HBV RNA transcription. It exhibits IC50, and IC90 values of 0.017 and 0.776 mg/mL respectively, against E. histolytica, 0.004 and 0.067 mg/mL against G. intestinalis, and 0.034 and 2.046 mg/mL against T. vaginalis. This compound is more toxic than metronidazole and albendazole against E. histolytica.
In vivo	Nitazoxanide is partially effective at reducing the parasite burden in a gnotobiotic piglet diarrhea model when given orally for 11 days at 250 mg/kg/day but not at 125 mg/kg/day. This compound induces a drug-related diarrhea in piglets that might have influenced its therapeutic efficacy.
References	[1] https://pubmed.ncbi.nlm.nih.gov/9687390/ [2] https://pubmed.ncbi.nlm.nih.gov/15791519/ [3] https://pubmed.ncbi.nlm.nih.gov/11751773/ [4] https://pubmed.ncbi.nlm.nih.gov/17888524/ [5] https://pubmed.ncbi.nlm.nih.gov/12120985/ [6] https://pubmed.ncbi.nlm.nih.gov/22589723/

Clinical Trial Information

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

NCT Number	Recruitment	Conditions	Sponsor/Collaborators	Start Date	Phases
NCT06049901	Recruiting	Metastatic Colorectal Cancer	Tanta University	March 1 2023	Phase 3
NCT05701423	Recruiting	Multiple Sclerosis	Biogen	February 8 2023	--
NCT05368935	Completed	Renal Impairment\|Renal Disease\|Kidney Disease	Genfit	April 25 2022	Phase 1
NCT05116826	Completed	Moderate Hepatic Impairment\|Severe Hepatic Impairment\|Liver Diseases	Genfit	November 5 2021	Phase 1
NCT03656068	Completed	Non-alcoholic Steatohepatitis\|Fatty Liver\|Fibrosis Liver\|Compensated Cirrhosis	Pinnacle Clinical Research PLLC	December 4 2018	Phase 2
NCT02684240	Completed	Tuberculosis	Weill Medical College of Cornell University	February 2016	Phase 2

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Nitazoxanide Influenza Virus inhibitor

Chemical Structure

Molecular Weight: 307.28