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Melengestrol acetate

Drug ingredient

CAS 2919-66-6

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

Molecular structure of 2919-66-6
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
2 FDA-registered drug labelers
Pharmacia & Upjohn Company LLC
Zhejiang Xianju Pharmaceutical Co., Ltd.

Why It Matters

Sectors
Health
Downstream UsesNot recorded
FDA Shortage Status
No FDA shortage records

Chemical Identity

CAS2919-66-6
PubChem CID250948
DTXSIDDTXSID5048184
FormulaC25H32O4
Mol. Weight396.5 g/mol
SMILESCC1=CC2C(CCC3(C2CC(=C)C3(C(=O)C)OC(=O)C)C)C4(C1=CC(=O)CC4)C

Data Sources

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Brief citations

Melengestrol acetate (CAS 2919-66-6) https://chemicalindependence.com/chemical/2919-66-6/ PubChem: 250948. Retrieved 2026-04-07. https://pubchem.ncbi.nlm.nih.gov/compound/250948 FDA National Drug Code directory: CAS 2919-66-6. 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 293723 for CAS 2919-66-6. Reporting year: 2024. https://usatrade.census.gov/