niclosamide
Drug ingredientThis chemical is an active pharmaceutical ingredient used in FDA-regulated drugs.
Where It Comes From
3 FDA-registered drug labelers
Derivados Quimicos
Derivados Quimicos SAU
Spectrum Laboratory Products, Inc.
Why It Matters
Sectors
Health
Downstream UsesNo data available
FDA Shortage Status
Whether any manufacturer currently reports this drug as in shortage on the FDA Drug Shortages database. "Active Shortage" means at least one presentation has status "current."
No FDA shortage records
Vendor Pricing
$0.32/gA2B Chem LLC
CountryUnited States
Pack$159.00 / 500 g
Purity98%
Vendors19 available
Prices reflect listed pack sizes. Small research packs run far above bulk rates.
18 more vendors
| Vendor | Country Supplier country. Where available, shows shipping origin. When the supplier ships from a different country than where they are registered, both are shown. Most suppliers show registration country only. | $/g | Pack | Purity |
|---|---|---|---|---|
| AA BLOCKS | United States | $0.41 | 500 g | 98% |
| Combi-Blocks, Inc. | United States | $0.48 | 500 g | 98% |
| AstaTech, Inc | United States | $0.59 | 100 g | 95% |
| AK Scientific Specialized | United States | $0.63 | 100 g | 95% |
| AK Scientific, Inc. | United States | $0.85 | 100 g | 98% |
| Sigma-Aldrich (Rush Stock) | Germany | $2.02 | 250 g | — |
| Sigma-Aldrich | Germany | $2.02 | 250 g | — |
| Cayman Europe | Estonia | $2.25 | 250 g | 95% |
| Apexbio Technology LLC | United States | $8.00 | 10 g | 99.6% |
| MedChemExpress MCE | Sweden | $11.98 | 10 g | 99.96% |
| MedKoo Biosciences, Inc | United States | $34.00 | 25 g | 98% |
| Molnova | China | $70.00 | 500 mg | 99% |
| TargetMol Chemicals | China → United States | $78.00 | 500 mg | 99.1% |
| Vitas M Chemical Limited | Hong Kong | $310.00 | 1 g | 90% |
| CliniSciences GmbH | Switzerland | $1096.50 | 100 mg | 99% |
| ChemFaces | China | $1500.00 | 20 mg | 98% |
| Princeton BioMolecular Research (SC) | United States | $2900.00 | 100 mg | 90% |
| Key Organics Ltd. | United Kingdom | $6900.00 | 10 mg | 97% |
Chemical Identity
CAS50-65-7
PubChem CID4477
DTXSIDDTXSID7040362
FormulaC13H8Cl2N2O4
Mol. Weight327.12 g/mol
SMILESC1=CC(=C(C=C1[N+](=O)[O-])Cl)NC(=O)C2=C(C=CC(=C2)Cl)O
Data Sources
44772026-04-07
https://pubchem.ncbi.nlm.nih.gov/rest/pug/compound/name/niclosamide/cids/JSON
Archive: data/sources/pubchem_name/niclosamide.json
CAS 50-65-72026-04-25
https://open.fda.gov/data/ndc/
Archive: data/sources/fda/ndc/ndc.json
bulk match2026-04-07
https://open.fda.gov/data/ndc/
Archive: data/sources/fda/ndc/ndc.json