Exemestane

Drug ingredient

CAS 107868-30-4

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

US productionNot reported

Import value, 2024$154M

Top sourceItaly 60%

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 293729 · basket

These shares come from HS customs code 293729, which covers 57 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 60%ItalyES 14%SpainCN 11%ChinaDE 6%GermanyAT 2%Austria

Netherlands
Australia
Malaysia
Portugal
United Kingdom
Japan
Malta
Canada
Israel
Singapore
New Zealand
Poland
Ukraine
Belgium
Sweden

23 FDA-registered drug labelers

Aurobindo Pharma Limited

AX Pharmaceutical Corp

Breckenridge Pharmaceutical, Inc.

Bryant Ranch Prepack

Catalent Micron Technologies, Inc.

Cipla Ltd.

Cipla USA Inc.

Curia Spain S.A.U.

Farmabios S.p.A.

Florida Pharmaceutical Products, LLC

Mylan Pharmaceuticals Inc.

NorthStar Rx LLC

Pfizer Asia Manufacturing Pte Ltd

Pharmacia & Upjohn Company LLC

ScinoPharm Taiwan Ltd.

Shandong Anhong Pharmaceutical Co., Ltd.

Sterling Chemical Malta Ltd

STERLING SPA

Symbiotica Speciality Ingredients Sdn. Bhd.

Upsher-Smith Laboratories, Inc.

Viatris Pharmaceuticals LLC

Zydus Lifesciences Limited

Zydus Pharmaceuticals USA Inc.

Why It Matters

Sectors

Health

Downstream Uses

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

•Aromasin
•Exemestane

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

CAS107868-30-4

PubChem CID60198

DTXSIDDTXSID5023037

FormulaC20H24O2

Mol. Weight296.4 g/mol

SMILESCC12CCC3C(C1CCC2=O)CC(=C)C4=CC(=O)C=CC34C

Data Sources

PubChem · compound 60198Retrieved 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

Exemestane (CAS 107868-30-4) https://chemicalindependence.com/chemical/107868-30-4/ PubChem: 60198. Retrieved 2026-04-07. https://pubchem.ncbi.nlm.nih.gov/compound/60198 FDA National Drug Code directory: CAS 107868-30-4. 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 293729 for CAS 107868-30-4. Reporting year: 2024. https://usatrade.census.gov/