Cuprizone
CAS 370-81-0
Ethanedioic acid, 1,2-bis(2-cyclohexylidenehydrazide)
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 292800 · basket
These shares come from HS customs code 292800, which covers 112 tracked chemicals in total. They estimate the category's origin mix, not this chemical specifically.
- Canada
- Spain
- Mexico
- Netherlands
- Poland
- Malta
- Norway
- Ukraine
- Belgium
- Israel
- Czech Republic
- Austria
- Indonesia
- United Arab Emirates
- Brazil
- Lithuania
Why It Matters
No EPA sector or FDA product records name a use for this chemical.
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 |
|---|---|---|---|---|
| Angene Chemical | China → Hong Kong | $0.16 | 500 g | 97% |
| A2B Chem LLC | United States | $0.19 | 100 g | — |
| AA BLOCKS | United States | $0.20 | 500 g | — |
| Apollo Scientific UK | United Kingdom | $0.21 | 10 kg | 99% |
| Combi-Blocks, Inc. | United States | $0.25 | 1 kg | 97% |
| Ambeed, Inc. | United States | $0.26 | 500 g | 99% |
| Fluorochem EU | Germany | $0.33 | 100 g | 97% |
| Biopharma PEG Scientific Inc. | United States | $1.40 | 100 g | 98% |
| AK Scientific, Inc. | United States | $1.56 | 25 g | 98% |
| Sigma-Aldrich (Rush Stock) | Germany | $2.55 | 100 g | 99% |
| Sigma-Aldrich | Germany | $2.55 | 100 g | 99% |
| ALFA AESAR | Germany | $2.70 | 25 g | 98% |
| AstaTech (2 weeks) | United States | $3.77 | 100 g | 98% |
| Angene International Limited | United States | $3.84 | 25 g | 98% |
| MedChemExpress MCE | Sweden | $16.46 | 10 g | 99.61% |
| TargetMol Chemicals | China → United States | $35.00 | 1 g | 99.88% |
| MedKoo Biosciences, Inc | United States | $35.00 | 10 g | 98% |
| Labotest KG | Germany | $217.80 | 5000 mg | 90% |
| ChemBridge Corporation | Kazakhstan | $1860.00 | 100 mg | 90% |
| Vitas M Chemical Limited | Hong Kong | $4020.00 | 50 mg | 90% |
| Princeton BioMolecular Research (SC) | United States | $4200.00 | 50 mg | 90% |
| Angene | China → Hong Kong | $4266.67 | 30 mg | 97% |
Chemical Identity
Data Sources
- EPA TSCA InventoryRetrieved 2026-10-04
- US Census international tradeReporting year: 2024 · Retrieved 2026-10-04
Brief citations
Cuprizone (CAS 370-81-0) https://chemicalindependence.com/chemical/370-81-0/ EPA TSCA Inventory: CAS 370-81-0. Retrieved 2026-10-04. https://www.epa.gov/tsca-inventory US Census international trade: HS 292800 for CAS 370-81-0. Reporting year: 2024. https://usatrade.census.gov/