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timolol

Drug ingredient

CAS 26839-75-8

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

Molecular structure of 26839-75-8
US productionNot reported
Import value, 2024$6.4B
Top sourceSingapore 36%

EPA lists this chemical as inactive, meaning no company reported making, importing or processing it in the US from 2006 to 2016.

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 293499 · basket

These shares come from HS customs code 293499, which covers 575 tracked chemicals in total. They estimate the category's origin mix, not this chemical specifically.

Source Countries
SG 36%SingaporeIE 23%IrelandCN 11%ChinaCH 6%SwitzerlandIN 5%India
3 FDA-registered drug labelers
Excella GmbH & Co. KG
PCAS FINLAND OY
Thea Pharma Inc.

Why It Matters

Sectors
Health
Downstream Uses

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

  • •Betimol
FDA Shortage Status
No FDA shortage records

Chemical Identity

CAS26839-75-8
PubChem CID33624
DTXSIDDTXSID4023674
FormulaC13H24N4O3S
Mol. Weight316.42 g/mol
SMILESCC(C)(C)NCC(COC1=NSN=C1N2CCOCC2)O

Data Sources

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Brief citations

timolol (CAS 26839-75-8) https://chemicalindependence.com/chemical/26839-75-8/ PubChem: 33624. Retrieved 2026-04-07. https://pubchem.ncbi.nlm.nih.gov/compound/33624 EPA TSCA Inventory: CAS 26839-75-8. Retrieved 2026-04-24. https://www.epa.gov/tsca-inventory FDA National Drug Code directory: bulk match. Retrieved 2026-04-07. https://open.fda.gov/data/ndc/ US Census international trade: HS 293499 for CAS 26839-75-8. Reporting year: 2024. https://usatrade.census.gov/