Probenecid
Drug ingredientCAS 57-66-9
This chemical is an active pharmaceutical ingredient used in FDA-regulated drugs.
This chemical is listed as active in US commerce, but no company reported it to EPA’s survey for 2019 or 2023. Sites may have made or imported less than the threshold amount, or none.
Why supply is unknownProduction 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 293590 · basket
These shares come from HS customs code 293590, which covers 182 tracked chemicals in total. They estimate the category's origin mix, not this chemical specifically.
- Portugal
- Spain
- Italy
- Austria
- Israel
- Hungary
- Canada
- South Korea
- Netherlands
- Finland
- Poland
- Indonesia
- Ukraine
- Mexico
- South Africa
- Croatia
- Greece
- Taiwan
- Hong Kong
11 FDA-registered drug labelers
Why It Matters
Appears in 3 drug and cosmetic product listings (FDA).
- •Probenecid
- •Probenecid and Colchicine
- •Orlynvah
Vendor Pricing
Prices reflect listed pack sizes. Small research packs run far above bulk rates.
22 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 | $0.96 | 100 g | 99% |
| A2B Chem LLC | United States | $0.96 | 500 g | 99% |
| AK Scientific Specialized | United States | $1.34 | 100 g | 95% |
| AK Scientific, Inc. | United States | $1.80 | 100 g | 98% |
| AstaTech, Inc | United States | $1.95 | 100 g | 95% |
| Cayman Europe | Estonia | $4.82 | 100 g | 98% |
| Sigma-Aldrich (Rush Stock) | Germany | $5.99 | 100 g | — |
| Sigma-Aldrich | Germany | $5.99 | 100 g | — |
| Fluorochem UK | United Kingdom | $8.29 | 5 g | 98% |
| Fulfilled by Molport | Latvia | $10.00 | 500 mg | — |
| Apexbio Technology LLC | United States | $12.40 | 5 g | 99.81% |
| MedChemExpress MCE | Sweden | $26.62 | 5 g | 99.94% |
| Molnova | China | $45.00 | 1 g | 99% |
| TargetMol Chemicals | China → United States | $50.00 | 1 g | 99.95% |
| MedKoo Biosciences, Inc | United States | $95.00 | 10 g | 98% |
| Labotest KG | Germany | $217.80 | 5000 mg | 90% |
| CliniSciences GmbH | Switzerland | $451.50 | 100 mg | 98% |
| Maybridge, Ltd. | United Kingdom | $2414.30 | 100 mg | 97% |
| Otava, Ltd. | Ukraine | $2724.00 | 50 mg | 90% |
| Key Organics Ltd. | United Kingdom | $6900.00 | 10 mg | 97% |
| Princeton BioMolecular Research (SC) | United States | $8000.00 | 15 mg | 90% |
| TimTec, LLC | United States | $13333.33 | 30 mg | 90% |
Chemical Identity
Data Sources
- PubChem · compound 4911Retrieved 2026-04-07
- EPA TSCA InventoryRetrieved 2026-04-24
- FDA National Drug Code directoryRetrieved 2026-04-07
- US Census international tradeReporting year: 2024 · Retrieved 2026-10-04
Brief citations
Probenecid (CAS 57-66-9) https://chemicalindependence.com/chemical/57-66-9/ PubChem: 4911. Retrieved 2026-04-07. https://pubchem.ncbi.nlm.nih.gov/compound/4911 EPA TSCA Inventory: CAS 57-66-9. Retrieved 2026-04-24. https://www.epa.gov/tsca-inventory FDA National Drug Code directory: bulk match. Retrieved 2026-04-07. https://open.fda.gov/data/ndc/ US Census international trade: HS 293590 for CAS 57-66-9. Reporting year: 2024. https://usatrade.census.gov/