Flag of the United StatesAmerican Chemical Independence

Doxazosin mesylate

Drug ingredient

CAS 77883-43-3

This chemical is an active pharmaceutical ingredient used in FDA-regulated drugs.

Molecular structure of 77883-43-3
US productionNot reported
Top sourceNo public record

This chemical is not on EPA’s Toxic Substances Control Act inventory, the list behind EPA’s production survey.

Why supply is unknown

Where It Comes From

EPA and Census publish no US supply data for this chemical.

36 FDA-registered drug labelers
A-S Medication Solutions
Accord Healthcare Inc.
American Health Packaging
Aphena Pharma Solutions - Tennessee, LLC
Apotex Corp.
Aurobindo Pharma Limited
AvKARE
AvPAK
Bryant Ranch Prepack
Cardinal Health 107, LLC
Chartwell RX, LLC
COHANCE LIFESCIENCES LIMITED
direct rx
Dr.Reddy's laboratories Limited CTO IV
Excella GmbH & Co. KG
Heritage Pharmaceuticals Inc. d/b/a Avet Pharmaceuticals Inc.
Major Pharmaceuticals
Mylan Pharmaceuticals Inc.
Northwind Health Company, LLC
NuCare Pharmaceuticals, Inc.
PD-Rx Pharmaceuticals, Inc.
Pfizer Asia Manufacturing Pte Ltd
Pfizer Manufacturing Deutschland GmbH
Preferred Pharmaceuticals Inc.
Proficient Rx LP
REMEDYREPACK INC.
Rising Pharma Holdings, Inc.
ROERIG
Teva Pharmaceuticals USA, Inc.
Unichem Laboratories Limited, India
Unichem Pharmaceuticals (USA), Inc.
Upsher-Smith laboratories, LLC
Viatris Pharmaceuticals LLC
Viatris Specialty LLC
Zydus Lifesciences Limited
Zydus Pharmaceuticals USA Inc.

Why It Matters

Sectors
Health
Downstream Uses

Appears in 4 drug and cosmetic product listings (FDA).

  • •Doxazosin
  • •Doxazosin mesylate
  • •Cardura
  • •Cardura XL
FDA Shortage Status
No FDA shortage records

Vendor Pricing

$7.96/gA2B Chem LLC
CountryUnited States
Pack$199.00 / 25 g
Purity99%
Vendors23 available

Prices reflect listed pack sizes. Small research packs run far above bulk rates.

22 more vendors
VendorCountry$/gPackPurity
Ambeed, Inc.United States$8.40100 g99%
AA BLOCKSUnited States$8.8825 g99%
Aaron Chemicals LLCHong Kong$9.21100 g99%
Combi-Blocks, Inc.United States$9.8025 g98%
Angene ChemicalChina → Hong Kong$9.84100 g99%
AK Scientific, Inc.United States$15.6825 g98%
AK Scientific SpecializedUnited States$68.001 g99%
MolnovaChina$74.001 g99%
MedChemExpress MCESweden$123.421 g98.49%
TargetMol Chemicals USUnited States$124.00500 mg99.98%
MedKoo Biosciences, IncUnited States$130.005 g98%
TargetMol ChemicalsChina → United States$150.00200 mg99.98%
InterbioscreenHong Kong$150.0010 g95%
Cayman EuropeEstonia$185.641 g98%
Angene International LimitedUnited States$237.001 g98%
AstaTech (2 weeks)United States$251.001 g95%
Apexbio Technology LLCUnited States$800.00100 mg99.82%
CliniSciences GmbHSwitzerland$1522.2050 mg99%
Sigma-Aldrich (Rush Stock)Germany$2610.40200 mg—
Sigma-AldrichGermany$2610.40200 mg—
AngeneChina → Hong Kong$4266.6730 mg99%
Key Organics Ltd.United Kingdom$6900.0010 mg97%

Chemical Identity

CAS77883-43-3
PubChem CID62978
DTXSIDDTXSID5045598
FormulaC24H29N5O8S
Mol. Weight547.6 g/mol
SMILESCOC1=C(C=C2C(=C1)C(=NC(=N2)N3CCN(CC3)C(=O)C4COC5=CC=CC=C5O4)N)OC.CS(=O)(=O)O

Data Sources

← Back to Dashboard← Back to Health

Brief citations

Doxazosin mesylate (CAS 77883-43-3) https://chemicalindependence.com/chemical/77883-43-3/ PubChem: 62978. Retrieved 2026-04-07. https://pubchem.ncbi.nlm.nih.gov/compound/62978 FDA National Drug Code directory: CAS 77883-43-3. 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/