Ethosuximide
Drug ingredientCAS 77-67-8
This chemical is an active pharmaceutical ingredient used in FDA-regulated drugs.
This chemical is not on EPA’s Toxic Substances Control Act inventory, the list behind EPA’s production survey.
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 292519 · basket
These shares come from HS customs code 292519, which covers 43 tracked chemicals in total. They estimate the category's origin mix, not this chemical specifically.
- Australia
- Belgium
- Israel
- Switzerland
- Hungary
- Ukraine
- Slovakia
- Singapore
13 FDA-registered drug labelers
Why It Matters
Appears in 2 drug and cosmetic product listings (FDA).
- •Zarontin
- •Ethosuximide
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 |
|---|---|---|---|---|
| Sigma-Aldrich (Rush Stock) | Germany | $5.10 | 100 g | — |
| Sigma-Aldrich | Germany | $5.10 | 100 g | — |
| AK Scientific Specialized | United States | $5.80 | 25 g | 95% |
| A2B Chem LLC | United States | $7.12 | 25 g | 98% |
| AK Scientific, Inc. | United States | $7.80 | 25 g | 98% |
| Angene International Limited | United States | $13.40 | 25 g | 98% |
| Aaron Chemicals LLC | Hong Kong | $18.00 | 1 g | 98% |
| Combi-Blocks, Inc. | United States | $19.00 | 25 g | 98% |
| BLD Pharmatech Co., Limited | United States | $21.24 | 25 g | 98% |
| Ambeed, Inc. | United States | $21.24 | 25 g | 98% |
| Angene Chemical | China → Hong Kong | $22.00 | 1 g | 98% |
| BLD Pharmatech Ltd. | China | $24.00 | 5 g | 98% |
| MedKoo Biosciences, Inc | United States | $26.00 | 25 g | 98% |
| BLD Pharmatech GmbH | Germany | $40.00 | 1 g | 98% |
| AstaTech (2 weeks) | United States | $89.00 | 1 g | 95% |
| Molnova | China | $96.00 | 500 mg | 99% |
| TargetMol Chemicals | China → United States | $106.00 | 500 mg | 99.97% |
| Cayman Europe | Estonia | $123.76 | 1 g | 95% |
| MedChemExpress MCE | Sweden | $164.56 | 500 mg | 99.35% |
| Labotest KG | Germany | $453.00 | 1000 mg | 90% |
| Angene | China → Hong Kong | $4266.67 | 30 mg | 98% |
| Key Organics Ltd. | United Kingdom | $6900.00 | 10 mg | 95% |
Chemical Identity
Data Sources
- PubChem · compound 3291Retrieved 2026-04-07
- FDA National Drug Code directoryRetrieved 2026-04-25
- FDA National Drug Code directoryRetrieved 2026-04-07
- US Census international tradeReporting year: 2024 · Retrieved 2026-10-04
Brief citations
Ethosuximide (CAS 77-67-8) https://chemicalindependence.com/chemical/77-67-8/ PubChem: 3291. Retrieved 2026-04-07. https://pubchem.ncbi.nlm.nih.gov/compound/3291 FDA National Drug Code directory: CAS 77-67-8. Retrieved 2026-04-25. https://open.fda.gov/data/ndc/ FDA National Drug Code directory: bulk match. Retrieved 2026-04-07. https://open.fda.gov/data/ndc/ US Census international trade: HS 292519 for CAS 77-67-8. Reporting year: 2024. https://usatrade.census.gov/