1-Phenyl-3-pyrazolidinone
CAS 92-43-3
U.S. production volumes are classified as confidential business information.
At least one company claimed its 2019 production or import volume for this chemical as confidential, so EPA withholds it.
Why supply is unknownProduction is reported production, not a complete census of factories. US production volume is confidential. Production reporting year: 2019. 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
- 2019
- US production Confidential · Imports Confidential
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
Industrial Uses
- •Photosensitive agent in Photographic Film, Paper, Plate, and Chemical Manufacturing (100%)Processing as a reactant
Vendor Pricing
Prices reflect listed pack sizes. Small research packs run far above bulk rates.
23 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 | $0.19 | 500 g | 98.5% |
| Aaron Chemicals LLC | Hong Kong | $0.23 | 500 g | 98.5% |
| AA BLOCKS | United States | $0.29 | 500 g | 98.5% |
| Combi-Blocks, Inc. | United States | $0.32 | 1 kg | 98% |
| Ambeed, Inc. | United States | $0.50 | 100 g | 98% |
| ALFA AESAR | Germany | $0.58 | 250 g | 97% |
| Fluorochem UK | United Kingdom | $0.59 | 100 g | 95% |
| Sigma-Aldrich (Rush Stock) | Germany | $0.88 | 100 g | 97% |
| Sigma-Aldrich | Germany | $0.88 | 100 g | 97% |
| AK Scientific, Inc. | United States | $1.16 | 25 g | 98% |
| AstaTech (2 weeks) | United States | $1.17 | 100 g | 95% |
| MedChemExpress MCE | Sweden | $1.98 | 25 g | 99% |
| Angene International Limited | United States | $3.20 | 25 g | 98% |
| Interbioscreen | Hong Kong | $17.00 | 10 g | 95% |
| Labotest KG | Germany | $453.00 | 1000 mg | 90% |
| Otava, Ltd. | Ukraine | $2280.00 | 50 mg | 95% |
| Otava, Ltd. (2 weeks) | Ukraine | $2724.00 | 50 mg | 95% |
| Key Organics Ltd. | United Kingdom | $2740.00 | 50 mg | 95% |
| 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 | 98.5% |
| Asinex | Netherlands | $6461.40 | 100 mg | 90% |
| TimTec, LLC | United States | $14666.67 | 30 mg | 90% |
Chemical Identity
Data Sources
- EPA CompTox (DSSTox) · DTXSID1049433Retrieved 2026-04-06
- PubChem · compound 7090Retrieved 2026-04-06
- EPA Chemical Data ReportingReporting year: 2019 · Retrieved 2026-10-04
- EPA Chemical Data ReportingReporting year: 2019 · Retrieved 2026-10-04
- US Census international tradeReporting year: 2024 · Retrieved 2026-10-04
Brief citations
1-Phenyl-3-pyrazolidinone (CAS 92-43-3) https://chemicalindependence.com/chemical/92-43-3/ EPA CompTox (DSSTox): DTXSID1049433. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID1049433 PubChem: 7090. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/7090 EPA Chemical Data Reporting: 92-43-3. Reporting year: 2019. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 92-43-3. Reporting year: 2019. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 293319 for CAS 92-43-3. Reporting year: 2024. https://usatrade.census.gov/