3-Methyl-5-pyrazolone
CAS 108-26-9
3H-Pyrazol-3-one, 2,4-dihydro-5-methyl-
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 293319 · basket
These shares come from HS customs code 293319, which covers 133 tracked chemicals in total. They estimate the category's origin mix, not this chemical specifically.
- Sweden
- Ukraine
- Taiwan
- Spain
- Canada
- Portugal
- Slovakia
- New Zealand
- Netherlands
- Croatia
- Latvia
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.
21 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 | $0.06 | 500 g | 98% |
| BLD Pharmatech Ltd. | China | $0.13 | 1 kg | 97% |
| Ambeed, Inc. | United States | $0.14 | 1 kg | 97% |
| A2B Chem LLC | United States | $0.20 | 100 g | 97% |
| AA BLOCKS | United States | $0.22 | 100 g | 97% |
| Combi-Blocks, Inc. | United States | $0.25 | 1 kg | 97% |
| BLD Pharmatech Co., Limited | United States | $0.27 | 100 g | 97% |
| Fluorochem EU | Germany | $0.28 | 100 g | 97% |
| Synthonix | United States | $0.30 | 100 g | 95% |
| Angene International Limited | United States | $0.49 | 100 g | 98% |
| AK Scientific Specialized | United States | $0.51 | 100 g | 95% |
| AK Scientific, Inc. | United States | $0.68 | 100 g | 98% |
| BLD Pharmatech GmbH | Germany | $0.92 | 25 g | 97% |
| AstaTech (2 weeks) | United States | $1.48 | 25 g | 95% |
| ALFA AESAR | Germany | $2.95 | 50 g | 98% |
| Interbioscreen | Hong Kong | $10.00 | 10 g | 95% |
| Labotest KG | Germany | $453.00 | 1000 mg | 90% |
| Key Organics Ltd. | United Kingdom | $2740.00 | 50 mg | 90% |
| Vitas M Chemical Limited | Hong Kong | $3170.00 | 100 mg | 90% |
| ChemDiv, Inc. | United States | $4070.00 | 100 mg | 90% |
| Angene | China → Hong Kong | $4266.67 | 30 mg | 98% |
Chemical Identity
Data Sources
- EPA TSCA InventoryRetrieved 2026-10-04
- US Census international tradeReporting year: 2024 · Retrieved 2026-10-04
Brief citations
3-Methyl-5-pyrazolone (CAS 108-26-9) https://chemicalindependence.com/chemical/108-26-9/ EPA TSCA Inventory: CAS 108-26-9. Retrieved 2026-10-04. https://www.epa.gov/tsca-inventory US Census international trade: HS 293319 for CAS 108-26-9. Reporting year: 2024. https://usatrade.census.gov/