chlorzoxazone
Drug ingredientThis chemical is an active pharmaceutical ingredient used in FDA-regulated drugs.
Where It Comes From
24 FDA-registered drug labelers
A-S Medication Solutions
Actavis Pharma, Inc.
Advanced Rx of Tennessee, LLC
Advanced Rx Pharmacy of Tennessee, LLC
Aurobindo Pharma Limited
Bryant Ranch Prepack
Camber Pharmaceuticals, Inc.
Cintex Services, LLC
Endo USA, Inc.
Happy Robin, LLC
Lifsa Drugs LLC
Mayne Pharma Commercial LLC
Novitium Pharma LLC
NURAY CHEMICALS PRIVATE LIMITED
PD-Rx Pharmaceuticals, Inc.
PROCOS S.p.A.
Proficient Rx LP
REMEDYREPACK INC.
Rising Pharma Holdings, Inc.
SCL lifesciences Limited
Sionc Pharmaceutical Private Limited
Solubiomix
ST. MARY'S MEDICAL PARK PHARMACY
Syn-Tech Chem. & Pharm. Co., Ltd.
Why It Matters
Sectors
Health
Downstream Uses
Appears in 1 drug and cosmetic product listings (FDA).
- •Chlorzoxazone
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
$0.09/gAaron Chemicals LLC
CountryHong Kong
Pack$47.00 / 500 g
Purity99%
Vendors29 available
Prices reflect listed pack sizes. Small research packs run far above bulk rates.
28 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 | $0.10 | 500 g | 98% |
| Apollo Scientific US | United Kingdom | $0.20 | 2.5 kg | 98% |
| Fulfilled by Molport | Latvia | $0.20 | 25 g | 99% |
| Fluorochem EU | Germany | $0.21 | 100 g | 98% |
| BLD Pharmatech Ltd. | China | $0.21 | 1 kg | 99% |
| A2B Chem LLC | United States | $0.21 | 250 g | 99% |
| BLD Pharmatech GmbH | Germany | $0.25 | 500 g | 99% |
| Combi-Blocks, Inc. | United States | $0.25 | 1 kg | 98% |
| AA BLOCKS | United States | $0.27 | 250 g | 99% |
| Ambeed, Inc. | United States | $0.33 | 100 g | 99% |
| Fluorochem UK | United Kingdom | $0.34 | 25 g | 98% |
| BLD Pharmatech Co., Limited | United States | $0.56 | 25 g | 99% |
| Angene International Limited | United States | $0.93 | 500 g | 98% |
| ALFA AESAR | Germany | $1.08 | 50 g | 99% |
| Cayman Europe | Estonia | $1.17 | 250 g | 98% |
| AstaTech (2 weeks) | United States | $1.48 | 25 g | 95% |
| Sigma-Aldrich (Rush Stock) | Germany | $3.59 | 100 g | — |
| Sigma-Aldrich | Germany | $3.59 | 100 g | — |
| MedChemExpress MCE | Sweden | $15.00 | 5 g | 99.91% |
| TargetMol Chemicals | China → United States | $30.00 | 1 g | 99.72% |
| MedKoo Biosciences, Inc | United States | $30.00 | 25 g | 98% |
| Molnova | China | $76.00 | 500 mg | 99% |
| Labotest KG | Germany | $217.80 | 5000 mg | 90% |
| 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% |
| Key Organics Ltd. | United Kingdom | $6900.00 | 10 mg | 97% |
| TimTec, LLC (back-ordered) | United States | $32000.00 | 15 mg | 94% |
Chemical Identity
CAS95-25-0
PubChem CID2733
DTXSIDDTXSID9022813
FormulaC7H4ClNO2
Mol. Weight169.56 g/mol
SMILESC1=CC2=C(C=C1Cl)NC(=O)O2
Data Sources
27332026-04-07
https://pubchem.ncbi.nlm.nih.gov/rest/pug/compound/name/chlorzoxazone/cids/JSON
Archive: data/sources/pubchem_name/chlorzoxazone.json
CAS 95-25-02026-04-24
https://www.epa.gov/tsca-inventory
Archive: data/sources/tsca/tsca_inventory.csv
bulk match2026-04-07
https://open.fda.gov/data/ndc/
Archive: data/sources/fda/ndc/ndc.json