warfarin sodium

Drug ingredient

CAS 129-06-6

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

US productionNot reported

Import value, 2024$286M

Top sourceChina 48%

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 unknown

Production 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 293220 · basket

These shares come from HS customs code 293220, which covers 151 tracked chemicals in total. They estimate the category's origin mix, not this chemical specifically.

Source Countries

Country of origin for US imports, from Census customs data (2024).

CN 48%ChinaIN 15%IndiaJP 7%JapanGB 7%United KingdomCH 7%Switzerland

Mexico
Austria
Indonesia
Czech Republic
Slovakia
Malaysia
Israel
Poland
Vietnam
Ukraine
South Africa
Singapore
Russia
Lithuania
Hungary
Belarus
Brazil
Australia

24 FDA-registered drug labelers

A-S Medication Solutions

Alchymars ICM SM Private Limited

American Health Packaging

Amneal Pharmaceuticals LLC

Aphena Pharma Solutions - Tennessee, LLC

Bryant Ranch Prepack

Cardinal Health 107, LLC

Chieron Active Ingredients Private Limited

Coupler LLC

DIRECT RX

Exelan Pharmaceuticals Inc.

Farmak, a,s

Golden State Medical Supply, Inc.

Ipca Laboratories Limited

Northwind Health Company, LLC

PD-Rx Pharmaceuticals, Inc.

Preferred Pharmaceuticals Inc.

Professional Compounding Centers of America dba PCCA

Proficient Rx LP

REMEDYREPACK INC.

Sun Pharmaceutical Industries, Inc.

Teva Pharmaceuticals USA, Inc.

Upsher-Smith Laboratories, LLC

Zydus Lifesciences Limited

Why It Matters

Sectors

Health

Downstream Uses

Appears in 2 drug and cosmetic product listings (FDA).

•Warfarin Sodium
•Jantoven

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

Chemical Identity

CAS129-06-6

PubChem CID16204922

DTXSIDDTXSID7035010

FormulaC19H15NaO4

Mol. Weight330.3 g/mol

SMILESCC(=O)CC(C1=CC=CC=C1)C2=C(C3=CC=CC=C3OC2=O)[O-].[Na+]

Data Sources

PubChem · compound 16204922Retrieved 2026-04-07
EPA TSCA InventoryRetrieved 2026-04-24
FDA National Drug Code directoryRetrieved 2026-04-07
US Census international tradeReporting year: 2024 · Retrieved 2026-10-04

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Brief citations

warfarin sodium (CAS 129-06-6) https://chemicalindependence.com/chemical/129-06-6/ PubChem: 16204922. Retrieved 2026-04-07. https://pubchem.ncbi.nlm.nih.gov/compound/16204922 EPA TSCA Inventory: CAS 129-06-6. Retrieved 2026-04-24. https://www.epa.gov/tsca-inventory FDA National Drug Code directory: bulk match. Retrieved 2026-04-07. https://open.fda.gov/data/ndc/ US Census international trade: HS 293220 for CAS 129-06-6. Reporting year: 2024. https://usatrade.census.gov/