Triazolam

Drug ingredient

CAS 28911-01-5

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

Molecular structure of 28911-01-5
US productionNot reported
Import value, 2024$10M
Top sourceItaly 73%

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 293391 · basket

These shares come from HS customs code 293391, which covers 14 tracked chemicals in total. They estimate the category's origin mix, not this chemical specifically.

Source Countries
IT 73%ItalyIN 21%IndiaIL 4%IsraelFI 1%Finland
12 FDA-registered drug labelers
A-S Medication Solutions
Aphena Pharma Solutions - Tennessee, LLC
Bryant Ranch Prepack
Cambrex Profarmaco Milano Srl
Ingenus Pharmaceuticals, LLC
Mylan Pharmaceuticals Inc.
PD-Rx Pharmaceuticals, Inc.
Pfizer Ireland Pharmaceuticals Unlimited Company
Pharmacia & Upjohn Company LLC
Pharmacia and Upjohn Company LLC
Zydus Lifesciences Limited
Zydus Pharmaceuticals USA Inc.

Why It Matters

Sectors
Health
Downstream Uses

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

  • •Triazolam
  • •Halcion
FDA Shortage Status
No Shortage
Shortage History
  • to be discontinued

    Triazolam Tablet

    Shortage listed since September 29, 2025

See all current drug shortages

Chemical Identity

CAS28911-01-5
PubChem CID5556
DTXSIDDTXSID6046763
FormulaC17H12Cl2N4
Mol. Weight343.2 g/mol
SMILESCC1=NN=C2N1C3=C(C=C(C=C3)Cl)C(=NC2)C4=CC=CC=C4Cl

Data Sources

Brief citations

Triazolam (CAS 28911-01-5) https://chemicalindependence.com/chemical/28911-01-5/ PubChem: 5556. Retrieved 2026-04-07. https://pubchem.ncbi.nlm.nih.gov/compound/5556 FDA National Drug Code directory: CAS 28911-01-5. Retrieved 2026-04-25. https://open.fda.gov/data/ndc/ FDA Drug Shortages: CAS 28911-01-5. Retrieved 2026-10-04. https://www.accessdata.fda.gov/scripts/drugshortages/ US Census international trade: HS 293391 for CAS 28911-01-5. Reporting year: 2024. https://usatrade.census.gov/