1,3-Isobenzofurandione, 5-fluoro-
CAS 319-03-9
EPA and Census publish no US supply data for this chemical.
US productionNot reported
Top sourceNo public record
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 unknownWhere It Comes From
EPA and Census publish no US supply data for this chemical.
Why It Matters
No EPA sector or FDA product records name a use for this chemical.
Vendor Pricing
$1.42/gCombi-Blocks, Inc.
CountryUnited States
Pack$710.00 / 500 g
Purity98%
Vendors27 available
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 |
|---|---|---|---|---|
| Ambeed, Inc. | United States | $1.65 | 500 g | 97% |
| A2B Chem LLC | United States | $1.66 | 100 g | 98% |
| AA BLOCKS | United States | $1.68 | 25 g | 98% |
| Aaron Chemicals LLC | Hong Kong | $2.29 | 500 g | 97% |
| Angene Chemical | China → Hong Kong | $2.30 | 500 g | 97% |
| Chemscene | United States | $2.36 | 100 g | — |
| BLD Pharmatech Co., Limited | United States | $2.36 | 100 g | 97% |
| BLD Pharmatech GmbH | Germany | $2.36 | 100 g | 97% |
| BLD Pharmatech Ltd. | China | $2.36 | 100 g | 97% |
| Angene International Limited | United States | $2.84 | 25 g | 97% |
| Fluorochem EU | Germany | $2.95 | 25 g | 95% |
| Biopharma PEG Scientific Inc. | United States | $3.00 | 100 g | 95% |
| AstaTech, Inc | United States | $3.68 | 100 g | 95% |
| AK Scientific Specialized | United States | $4.20 | 25 g | 95% |
| Apollo Scientific UK | United Kingdom | $4.36 | 100 g | 97% |
| Fluorochem UK | United Kingdom | $5.43 | 5 g | 95% |
| AK Scientific, Inc. | United States | $5.64 | 25 g | 98% |
| Synthonix | United States | $6.00 | 5 g | 95% |
| MedChemExpress MCE | Sweden | $6.29 | 10 g | 98% |
| Accela ChemBio | United States | $8.80 | 5 g | 97% |
| Sigma-Aldrich (Rush Stock) | Germany | $23.11 | 25 g | 97% |
| Sigma-Aldrich | Germany | $23.11 | 25 g | 97% |
| ALFA AESAR | Germany | $43.56 | 1 g | 98% |
| Labotest KG | Germany | $217.80 | 5000 mg | 90% |
| Key Organics Ltd. | United Kingdom | $1960.00 | 100 mg | 90% |
| Angene | China → Hong Kong | $4266.67 | 30 mg | 97% |
Chemical Identity
CAS319-03-9
PubChem CIDNot recorded
DTXSIDDTXSID7059802
FormulaC8H3FO3
Mol. Weight166.107 g/mol
SMILESFC1=CC2=C(C=C1)C(=O)OC2=O
Data Sources
- EPA TSCA InventoryRetrieved 2026-10-04
Brief citations
1,3-Isobenzofurandione, 5-fluoro- (CAS 319-03-9) https://chemicalindependence.com/chemical/319-03-9/ EPA TSCA Inventory: CAS 319-03-9. Retrieved 2026-10-04. https://www.epa.gov/tsca-inventory