Benzoic acid, 2-(chlorosulfonyl)-, methyl ester
CAS 26638-43-7
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 291639 · basket
These shares come from HS customs code 291639, which covers 229 tracked chemicals in total. They estimate the category's origin mix, not this chemical specifically.
- Spain
- Ukraine
- Singapore
- Turkey
- Norway
- Czech Republic
- Taiwan
- South Korea
- Japan
- Mexico
- New Zealand
- Canada
- Sweden
- Hong Kong
- 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.
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 |
|---|---|---|---|---|
| Aaron Chemicals LLC | Hong Kong | $2.28 | 25 g | 97% |
| A2B Chem LLC | United States | $2.64 | 25 g | 95% |
| Combi-Blocks, Inc. | United States | $2.76 | 500 g | 95% |
| AA BLOCKS | United States | $3.08 | 500 g | 95% |
| Fluorochem EU | Germany | $3.75 | 10 g | 95% |
| Chemscene | United States | $3.76 | 25 g | — |
| Ambeed, Inc. | United States | $3.80 | 25 g | 97% |
| MedChemExpress MCE | Sweden | $4.69 | 25 g | — |
| Manchester Organics | United Kingdom | $4.79 | 25 g | 94% |
| AK Scientific, Inc. | United States | $5.92 | 25 g | 95% |
| Synthonix | United States | $6.00 | 5 g | 97% |
| Key Organics Ltd. | United Kingdom | $7.40 | 10 g | 95% |
| Fluorochem UK | United Kingdom | $8.58 | 1 g | 95% |
| AstaTech, Inc | United States | $8.80 | 10 g | 95% |
| ALFA AESAR | Germany | $9.12 | 25 g | 94% |
| Apollo Scientific US | United Kingdom | $10.20 | 5 g | 95% |
| Angene International Limited | United States | $10.52 | 25 g | 95% |
| Otava, Ltd. | Ukraine | $25.00 | 1 g | 95% |
| ACINTS | United Kingdom | $40.69 | 10 g | 95% |
| ChemDiv, Inc. | United States | $75.00 | 10 g | 90% |
| ChemBridge Corporation | Kazakhstan | $123.20 | 5 g | 95% |
| Princeton BioMolecular Research (SC) | United States | $2900.00 | 100 mg | 90% |
| Angene | China → Hong Kong | $4266.67 | 30 mg | 95% |
Chemical Identity
Data Sources
- EPA TSCA InventoryRetrieved 2026-10-04
- US Census international tradeReporting year: 2024 · Retrieved 2026-10-04
Brief citations
Benzoic acid, 2-(chlorosulfonyl)-, methyl ester (CAS 26638-43-7) https://chemicalindependence.com/chemical/26638-43-7/ EPA TSCA Inventory: CAS 26638-43-7. Retrieved 2026-10-04. https://www.epa.gov/tsca-inventory US Census international trade: HS 291639 for CAS 26638-43-7. Reporting year: 2024. https://usatrade.census.gov/