naproxen
Drug ingredientCAS 22204-53-1
This chemical is an active pharmaceutical ingredient used in FDA-regulated drugs.
This chemical is not on EPA’s Toxic Substances Control Act inventory, the list behind EPA’s production survey.
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 291899 · basket
These shares come from HS customs code 291899, which covers 139 tracked chemicals in total. They estimate the category's origin mix, not this chemical specifically.
- Austria
- Hungary
- South Korea
- Taiwan
- Czech Republic
- Mexico
- Spain
- Ukraine
- Estonia
- Australia
- Israel
- Singapore
- Slovakia
- Russia
56 FDA-registered drug labelers
Why It Matters
Appears in 4 drug and cosmetic product listings (FDA).
- •Naproxen
- •Naproxen and esomeprazole magnesium
- •Naproxen Oral Suspension
- •EC-Naproxen
Vendor Pricing
Prices reflect listed pack sizes. Small research packs run far above bulk rates.
26 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 |
|---|---|---|---|---|
| Angene Chemical | China → Hong Kong | $2.35 | 100 g | 98% |
| A2B Chem LLC | United States | $2.56 | 100 g | 98% |
| AA BLOCKS | United States | $2.85 | 100 g | 98% |
| BLD Pharmatech GmbH | Germany | $3.28 | 100 g | 98% |
| BLD Pharmatech Ltd. | China | $3.28 | 100 g | 98% |
| AK Scientific Specialized | United States | $3.28 | 100 g | 95% |
| Combi-Blocks, Inc. | United States | $3.28 | 100 g | 98% |
| Manchester Organics | United Kingdom | $3.53 | 10 g | 95% |
| Chemscene | United States | $3.59 | 100 g | — |
| BLD Pharmatech Co., Limited | United States | $3.60 | 100 g | 98% |
| Ambeed, Inc. | United States | $3.60 | 100 g | 98% |
| AK Scientific, Inc. | United States | $4.39 | 100 g | 98% |
| Synthonix | United States | $4.80 | 25 g | 95% |
| Fulfilled by Molport | Latvia | $5.00 | 1 g | 98% |
| MedChemExpress MCE | Sweden | $5.52 | 25 g | 99.94% |
| Fluorochem EU | Germany | $5.81 | 5 g | 97% |
| AstaTech, Inc | United States | $10.80 | 10 g | 95% |
| Fluorochem UK | United Kingdom | $11.44 | 1 g | 97% |
| Angene International Limited | United States | $22.08 | 25 g | 97% |
| EvoBlocks, Ltd. | Hungary | $31.43 | 100 g | 95% |
| Labotest KG | Germany | $217.80 | 5000 mg | 90% |
| Princeton BioMolecular Research (SC) | United States | $2900.00 | 100 mg | 90% |
| Vitas M Chemical Limited | Hong Kong | $3170.00 | 100 mg | 90% |
| Angene | China → Hong Kong | $4266.67 | 30 mg | 98% |
| ChemDiv, Inc. | United States | $4875.00 | 80 mg | 90% |
| TimTec, LLC | United States | $9333.33 | 30 mg | 90% |
Chemical Identity
Data Sources
- PubChem · compound 156391Retrieved 2026-04-07
- FDA National Drug Code directoryRetrieved 2026-04-25
- FDA National Drug Code directoryRetrieved 2026-04-07
- US Census international tradeReporting year: 2024 · Retrieved 2026-10-04
Brief citations
naproxen (CAS 22204-53-1) https://chemicalindependence.com/chemical/22204-53-1/ PubChem: 156391. Retrieved 2026-04-07. https://pubchem.ncbi.nlm.nih.gov/compound/156391 FDA National Drug Code directory: CAS 22204-53-1. 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 291899 for CAS 22204-53-1. Reporting year: 2024. https://usatrade.census.gov/