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Dienogest

Drug ingredient

CAS 65928-58-7

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

Molecular structure of 65928-58-7
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
3 FDA-registered drug labelers
Chemo Biosynthesis s.r.l.
Industriale Chimica s.r.l.
Newchem SpA

Why It Matters

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

Chemical Identity

CAS65928-58-7
PubChem CID68861
DTXSIDDTXSID80891478
FormulaC20H25NO2
Mol. Weight311.4 g/mol
SMILESCC12CCC3=C4CCC(=O)C=C4CCC3C1CCC2(CC#N)O

Data Sources

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Brief citations

Dienogest (CAS 65928-58-7) https://chemicalindependence.com/chemical/65928-58-7/ PubChem: 68861. Retrieved 2026-04-07. https://pubchem.ncbi.nlm.nih.gov/compound/68861 FDA National Drug Code directory: CAS 65928-58-7. 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 65928-58-7. Reporting year: 2024. https://usatrade.census.gov/