4-Imidazolidinone, 2-thioxo-
CAS 503-87-7
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 293329 · basket
These shares come from HS customs code 293329, which covers 173 tracked chemicals in total. They estimate the category's origin mix, not this chemical specifically.
- Australia
- Brazil
- Czech Republic
- Ireland
- Sweden
- Ukraine
- Poland
- United Arab Emirates
- Hungary
- Israel
- Netherlands
- Canada
- Saudi Arabia
- Greece
- Belgium
- Austria
- Latvia
- Singapore
- Denmark
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.
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 |
|---|---|---|---|---|
| A2B Chem LLC | United States | $3.08 | 25 g | 98% |
| Aaron Chemicals LLC | Hong Kong | $3.36 | 100 g | 98% |
| Angene Chemical | China → Hong Kong | $3.39 | 100 g | 98% |
| Combi-Blocks, Inc. | United States | $3.89 | 100 g | 99% |
| BLD Pharmatech Co., Limited | United States | $3.89 | 100 g | 98% |
| BLD Pharmatech GmbH | Germany | $3.89 | 100 g | 98% |
| BLD Pharmatech Ltd. | China | $3.89 | 100 g | 98% |
| Ambeed, Inc. | United States | $3.89 | 100 g | 98% |
| AK Scientific Specialized | United States | $3.92 | 100 g | 95% |
| AstaTech, Inc | United States | $4.76 | 100 g | 95% |
| AK Scientific, Inc. | United States | $5.23 | 100 g | 98% |
| Sigma-Aldrich (Rush Stock) | Germany | $5.69 | 25 g | 99% |
| Sigma-Aldrich | Germany | $5.69 | 25 g | 99% |
| Angene International Limited | United States | $6.37 | 100 g | 95% |
| MedKoo Biosciences, Inc | United States | $27.50 | 20 g | 98% |
| Interbioscreen | Hong Kong | $34.00 | 10 g | 95% |
| TargetMol Chemicals | China → United States | $65.00 | 1 g | — |
| Labotest KG | Germany | $217.80 | 5000 mg | 90% |
| MedChemExpress MCE | Sweden | $629.20 | 100 mg | 99.89% |
| Otava, Ltd. | Ukraine | $2724.00 | 50 mg | 90% |
| Otava, Ltd. (2 weeks) | Ukraine | $2724.00 | 50 mg | — |
| 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 | $4400.00 | 90 mg | 90% |
| TimTec, LLC | United States | $90000.00 | 2 mg | 97% |
Chemical Identity
Data Sources
- EPA TSCA InventoryRetrieved 2026-10-04
- US Census international tradeReporting year: 2024 · Retrieved 2026-10-04
Brief citations
4-Imidazolidinone, 2-thioxo- (CAS 503-87-7) https://chemicalindependence.com/chemical/503-87-7/ EPA TSCA Inventory: CAS 503-87-7. Retrieved 2026-10-04. https://www.epa.gov/tsca-inventory US Census international trade: HS 293329 for CAS 503-87-7. Reporting year: 2024. https://usatrade.census.gov/