tolcapone
Drug ingredientThis chemical is an active pharmaceutical ingredient used in FDA-regulated drugs.
Where It Comes From
6 FDA-registered drug labelers
Anthem Biosciences Limited
Bausch Health US LLC
COHANCE LIFESCIENCES LIMITED
Ingenus Pharmaceuticals, LLC
Oceanside Pharmaceuticals
Piramal Pharma Limited
Why It Matters
Sectors
Health
Downstream Uses
Appears in 2 drug and cosmetic product listings (FDA).
- •Tolcapone
- •Tasmar
FDA Shortage Status
Whether any manufacturer currently reports this drug as in shortage on the FDA Drug Shortages database. "Active Shortage" means at least one presentation has status "current."
No FDA shortage records
Vendor Pricing
$29.44/gAaron Chemicals LLC
CountryHong Kong
Pack$736.00 / 25 g
Purity99%
Vendors23 available
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 |
|---|---|---|---|---|
| Angene Chemical | China → Hong Kong | $29.64 | 25 g | 99% |
| Combi-Blocks, Inc. | United States | $78.40 | 25 g | 98% |
| A2B Chem LLC | United States | $82.84 | 25 g | 98% |
| AA BLOCKS | United States | $87.44 | 25 g | 98% |
| Fulfilled by Molport | Latvia | $170.00 | 100 mg | 99% |
| Ambeed, Inc. | United States | $195.00 | 1 g | 98% |
| TargetMol Chemicals | China → United States | $632.00 | 500 mg | 99.89% |
| AK Scientific Specialized | United States | $702.00 | 1 g | 95% |
| Molnova | China | $850.00 | 200 mg | 99% |
| TargetMol Chemicals EU | Austria | $945.00 | 200 mg | 99.89% |
| AK Scientific, Inc. | United States | $983.00 | 1 g | 97% |
| Angene International Limited | United States | $1543.00 | 1 g | 97% |
| MedChemExpress MCE | Sweden | $2057.00 | 100 mg | 99.91% |
| Apexbio Technology LLC | United States | $2400.00 | 50 mg | 99.42% |
| Angene | China → Hong Kong | $2500.00 | 30 mg | 99% |
| Sigma-Aldrich (Rush Stock) | Germany | $2610.40 | 200 mg | — |
| Sigma-Aldrich | Germany | $2610.40 | 200 mg | — |
| Axon Medchem | Netherlands | $3360.00 | 50 mg | 99% |
| AstaTech (2 weeks) | United States | $4636.00 | 250 mg | 95% |
| Cayman Europe | Estonia | $5759.60 | 100 mg | 98% |
| Key Organics Ltd. | United Kingdom | $6900.00 | 10 mg | 97% |
| MedKoo Biosciences, Inc | United States | $8000.00 | 100 mg | 98% |
Chemical Identity
CAS134308-13-7
PubChem CID4659569
DTXSIDDTXSID3023685
FormulaC14H11NO5
Mol. Weight273.24 g/mol
SMILESCC1=CC=C(C=C1)C(=O)C2=CC(=C(C(=C2)O)O)[N+](=O)[O-]
Data Sources
46595692026-04-07
https://pubchem.ncbi.nlm.nih.gov/rest/pug/compound/name/tolcapone/cids/JSON
Archive: data/sources/pubchem_name/tolcapone.json
CAS 134308-13-72026-04-25
https://open.fda.gov/data/ndc/
Archive: data/sources/fda/ndc/ndc.json
bulk match2026-04-07
https://open.fda.gov/data/ndc/
Archive: data/sources/fda/ndc/ndc.json