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Fulvestrant

Drug ingredient

CAS 129453-61-8

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

Molecular structure of 129453-61-8
US productionNot reported
Import value, 2024$76M
Top sourceSpain 35%

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 293723 · basket

These shares come from HS customs code 293723, which covers 29 tracked chemicals in total. They estimate the category's origin mix, not this chemical specifically.

Source Countries
ES 35%SpainNL 19%NetherlandsCN 18%ChinaIT 16%ItalyHU 4%Hungary
33 FDA-registered drug labelers
Accord Healthcare Inc.
Alembic Pharmaceuticals Inc.
Amneal Pharmaceuticals LLC
AstraZeneca Pharmaceuticals LP
Athenex Pharmaceutical Division, LLC.
Avenacy, Inc.
BluePoint Laboratories
Chia Tai Tianqing Pharmaceutical Group Co., Ltd.
Dr.Reddy's Laboratories Inc
Eugia US LLC
Farmabios S.p.A.
Fresenius Kabi USA, LLC
GLENMARK PHARMACEUTICALS INC., USA
Hikma Pharmaceuticals USA Inc.
Industriale Chimica s.r.l.
Jiangsu Hansoh Pharmaceutical Group Co., Ltd.
Lianyungang Runzhong Pharmaceutical Co. Ltd.
Meitheal Pharmaceuticals Inc
Minakem High Potent SA
N.V. Ajinomoto Omnichem S.A.
Northstar Rx, LLC,
Sagent Pharmaceuticals
Sandoz Inc
ScinoPharm Taiwan Ltd.
Sicor S.r.l.
Sinopep-Allsino Biopharmaceutical Co., Ltd.
Sterling Chemical Malta Ltd
STERLING SPA
Steroid S.p.A.
Wavelength Enterprises LTD
Xiromed, LLC
Zydus Lifesciences Limited
Zydus Pharmaceuticals USA Inc.

Why It Matters

Sectors
Health
Downstream Uses

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

  • •fulvestrant
  • •Faslodex
FDA Shortage Status
No FDA shortage records

Chemical Identity

CAS129453-61-8
PubChem CID104741
DTXSIDDTXSID4022369
FormulaC32H47F5O3S
Mol. Weight606.8 g/mol
SMILESCC12CCC3C(C1CCC2O)C(CC4=C3C=CC(=C4)O)CCCCCCCCCS(=O)CCCC(C(F)(F)F)(F)F

Data Sources

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Brief citations

Fulvestrant (CAS 129453-61-8) https://chemicalindependence.com/chemical/129453-61-8/ PubChem: 104741. Retrieved 2026-04-07. https://pubchem.ncbi.nlm.nih.gov/compound/104741 FDA National Drug Code directory: CAS 129453-61-8. 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 293723 for CAS 129453-61-8. Reporting year: 2024. https://usatrade.census.gov/