Fidaxomicin

Drug ingredient

CAS 873857-62-6

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

US productionNot reported

Import value, 2024$546M

Top sourceItaly 41%

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

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 294190 · basket

These shares come from HS customs code 294190, which covers 90 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).

IT 41%ItalyCN 24%ChinaDK 9%DenmarkHR 6%CroatiaIN 6%India

United Kingdom
Slovakia
Slovenia
Mexico
Canada
Germany
Belgium
Japan
Switzerland
Netherlands
Czech Republic
Uruguay
South Korea
Hong Kong
Portugal
Australia

10 FDA-registered drug labelers

Apotex Corp.

Biocon Limited

BrightGene Bio-Medical Technology Co., Ltd.

Concord Biotech Limited

Merck Sharp & Dohme LLC

North China Pharmaceutical Huasheng Co. Ltd.

TAPI Hungary Industries Kft.

Teva Pharmaceutical Works Private Limited Company

Teva Pharmaceuticals, Inc.

Torrent Pharmaceuticals Limited

Why It Matters

Sectors

Health

Downstream Uses

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

•Fidaxomicin
•Dificid

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

CAS873857-62-6

PubChem CID10034073

DTXSIDDTXSID901016415

FormulaC52H74Cl2O18

Mol. Weight1058 g/mol

SMILESCCC1C=C(C(CC=CC=C(C(=O)OC(CC=C(C=C(C1OC2C(C(C(C(O2)(C)C)OC(=O)C(C)C)O)O)C)C)C(C)O)COC3C(C(C(C(O3)C)OC(=O)C4=C(C(=C(C(=C4O)Cl)O)Cl)CC)O)OC)O)C

Data Sources

PubChem · compound 10034073Retrieved 2026-04-07
FDA National Drug Code directoryRetrieved 2026-04-25
FDA National Drug Code directoryRetrieved 2026-04-07
US Census international tradeReporting year: 2024 · Retrieved 2026-10-04

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Brief citations

Fidaxomicin (CAS 873857-62-6) https://chemicalindependence.com/chemical/873857-62-6/ PubChem: 10034073. Retrieved 2026-04-07. https://pubchem.ncbi.nlm.nih.gov/compound/10034073 FDA National Drug Code directory: CAS 873857-62-6. 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/ US Census international trade: HS 294190 for CAS 873857-62-6. Reporting year: 2024. https://usatrade.census.gov/