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Nitazoxanide

Drug ingredient

CAS 55981-09-4

This chemical is an active pharmaceutical ingredient used in FDA-regulated drugs.

Molecular structure of 55981-09-4
US productionNot reported
Import value, 2024$447M
Top sourceChina 31%

This chemical is not on EPA’s Toxic Substances Control Act inventory, the list behind EPA’s production survey.

Why supply is unknown

Production is reported production, not a complete census of factories. Import value and source-country shares describe a shared customs category, not a separate chemical measurement.

Where It Comes From

Customs basis: HS 293410 · basket

These shares come from HS customs code 293410, which covers 83 tracked chemicals in total. They estimate the category's origin mix, not this chemical specifically.

Source Countries
CN 31%ChinaDE 25%GermanyMX 19%MexicoJP 13%JapanIN 5%India
14 FDA-registered drug labelers
ANI Pharmaceuticals, Inc.
Azico Biophore India Private Limited
Camber Pharmaceuticals, Inc.
ChongqingDijiasuoPharmaceuticalTechnologyCo.,Ltd.
Cohance Lifesciences Limited
Darmerica, LLC
Dasami Lab Private Limited
e5 Pharma, LLC
Joyochem Co.,Ltd
Maprimed S.A.
MSN Life Sciences Private Limited
Qingdao Biopeptek Co., Ltd.
Qingdao Qinzeyuan Biotechnology Co., Ltd
Rising Pharma Holdings, Inc.

Why It Matters

Sectors
Health
Downstream Uses

Appears in 1 drug and cosmetic product listings (FDA).

  • •Nitazoxanide
FDA Shortage Status
No FDA shortage records

Vendor Pricing

$0.34/gBLD Pharmatech GmbH
CountryGermany
Pack$335.00 / 1 kg
Purity97%
Vendors27 available

Prices reflect listed pack sizes. Small research packs run far above bulk rates.

26 more vendors
VendorCountry$/gPackPurity
BLD Pharmatech Ltd.China$0.341 kg97%
Combi-Blocks, Inc.United States$0.341 kg98%
Aaron Chemicals LLCHong Kong$0.34250 g98%
Angene ChemicalChina → Hong Kong$0.35250 g98%
A2B Chem LLCUnited States$0.36100 g99%
AA BLOCKSUnited States$0.381 kg99%
BLD Pharmatech Co., LimitedUnited States$0.39500 g97%
Ambeed, Inc.United States$0.39500 g97%
AK Scientific SpecializedUnited States$0.51100 g95%
AK Scientific, Inc.United States$0.68100 g98%
Fulfilled by MolportLatvia$0.9010 g—
Fluorochem UKUnited Kingdom$0.9725 g95%
Angene International LimitedUnited States$1.40100 g98%
AstaTech, IncUnited States$2.3625 g98%
MedKoo Biosciences, IncUnited States$34.0025 g98%
Sigma-Aldrich (Rush Stock)Germany$520.13400 mg—
Sigma-AldrichGermany$520.13400 mg—
TargetMol ChemicalsChina → United States$910.00500 mg99.93%
MedChemExpress MCESweden$961.951 g99.95%
MolnovaChina$986.00500 mg99%
TargetMol Chemicals EUAustria$1980.00100 mg99.93%
CliniSciences GmbHSwitzerland$3096.0050 mg98%
AngeneChina → Hong Kong$4266.6730 mg98%
Cayman EuropeEstonia$5236.00250 mg95%
Apexbio Technology LLCUnited States$5500.0010 mg98.17%
Key Organics Ltd.United Kingdom$6900.0010 mg97%

Chemical Identity

CAS55981-09-4
PubChem CID41684
DTXSIDDTXSID5033757
FormulaC12H9N3O5S
Mol. Weight307.28 g/mol
SMILESCC(=O)OC1=CC=CC=C1C(=O)NC2=NC=C(S2)[N+](=O)[O-]

Data Sources

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Brief citations

Nitazoxanide (CAS 55981-09-4) https://chemicalindependence.com/chemical/55981-09-4/ PubChem: 41684. Retrieved 2026-04-07. https://pubchem.ncbi.nlm.nih.gov/compound/41684 FDA National Drug Code directory: CAS 55981-09-4. Retrieved 2026-04-25. https://open.fda.gov/data/ndc/ FDA National Drug Code directory: bulk match. Retrieved 2026-04-07. https://open.fda.gov/data/ndc/ US Census international trade: HS 293410 for CAS 55981-09-4. Reporting year: 2024. https://usatrade.census.gov/