Tiagabine hydrochloride

Drug ingredient

CAS 145821-59-6

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

Molecular structure of 145821-59-6 — 1 HCl

US productionNot reported

Top sourceNo public record

This chemical is not on EPA’s Toxic Substances Control Act inventory, the list behind EPA’s production survey.

Why supply is unknown

Where It Comes From

EPA and Census publish no US supply data for this chemical.

7 FDA-registered drug labelers

Cephalon, LLC

MAHI DRUGS PRIVATE LIMITED

MSN Life Sciences Private Limited

Novadoz Pharmaceuticals LLC

Siegfried Malta Limited

Sun Pharmaceutical Industries, Inc.

Teva Pharmaceuticals USA, Inc.

Why It Matters

Sectors

Health

Downstream Uses

Appears in 1 drug and cosmetic product listings (FDA).

•Tiagabine Hydrochloride

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
Tiagabine Hydrochloride Tablet
Shortage listed since April 15, 2026

See all current drug shortages

Chemical Identity

CAS145821-59-6

PubChem CID91274

DTXSIDDTXSID2044218

FormulaC20H26ClNO2S2

Mol. Weight412 g/mol

SMILESCC1=C(SC=C1)C(=CCCN2CCCC(C2)C(=O)O)C3=C(C=CS3)C.Cl

Data Sources

PubChem · compound 91274Retrieved 2026-04-07
FDA National Drug Code directoryRetrieved 2026-04-25
FDA Drug ShortagesRetrieved 2026-10-04

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Brief citations

Tiagabine hydrochloride (CAS 145821-59-6) https://chemicalindependence.com/chemical/145821-59-6/ PubChem: 91274. Retrieved 2026-04-07. https://pubchem.ncbi.nlm.nih.gov/compound/91274 FDA National Drug Code directory: CAS 145821-59-6. Retrieved 2026-04-25. https://open.fda.gov/data/ndc/ FDA Drug Shortages: CAS 145821-59-6. Retrieved 2026-10-04. https://www.accessdata.fda.gov/scripts/drugshortages/