Phentermine

Drug ingredient

CAS 122-09-8

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

US productionNot reported

Import value, 2024$4M

Top sourceGermany 95%

This chemical is listed as active in US commerce, but no company reported it to EPA’s survey for 2019 or 2023. Sites may have made or imported less than the threshold amount, or none.

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 292146 · basket

These shares come from HS customs code 292146, which covers 9 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).

DE 95%GermanyIT 5%Italy

India
United Kingdom

1 FDA-registered drug labeler

Siegfried USA, LLC

Why It Matters

Sectors

Health

Downstream UsesNot recorded

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 Shortage

Shortage History

Rows group FDA shortage filings by drug product. Each manufacturer makes its own FDA shortage filing, so one product can carry several reports at once: Available, Limited Availability, Unavailable or to be discontinued.

to be discontinued
Phentermine Hydrochloride Tablet
Shortage listed since June 13, 2025

See all current drug shortages

Chemical Identity

CAS122-09-8

PubChem CID4771

DTXSIDDTXSID9023461

FormulaC10H15N

Mol. Weight149.23 g/mol

SMILESCC(C)(CC1=CC=CC=C1)N

Data Sources

PubChem · compound 4771Retrieved 2026-04-07
EPA TSCA InventoryRetrieved 2026-04-24
FDA Drug ShortagesRetrieved 2026-10-04
US Census international tradeReporting year: 2024 · Retrieved 2026-10-04

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Brief citations

Phentermine (CAS 122-09-8) https://chemicalindependence.com/chemical/122-09-8/ PubChem: 4771. Retrieved 2026-04-07. https://pubchem.ncbi.nlm.nih.gov/compound/4771 EPA TSCA Inventory: CAS 122-09-8. Retrieved 2026-04-24. https://www.epa.gov/tsca-inventory FDA Drug Shortages: CAS 122-09-8. Retrieved 2026-10-04. https://www.accessdata.fda.gov/scripts/drugshortages/ US Census international trade: HS 292146 for CAS 122-09-8. Reporting year: 2024. https://usatrade.census.gov/