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Propoxycarbazone

CAS 145026-81-9

Benzoic acid, 2-[[[(4,5-dihydro-4-methyl-5-oxo-3-propoxy-1H-1,2,4-triazol-1-yl)carbonyl]amino]sulfonyl]-, methyl ester

Molecular structure of 145026-81-9
US productionNot reported
Import value, 2024$2.0B
Top sourceIreland 63%

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 293590 · basket

These shares come from HS customs code 293590, which covers 182 tracked chemicals in total. They estimate the category's origin mix, not this chemical specifically.

Source Countries
IE 63%IrelandSG 14%SingaporeIN 7%IndiaCN 7%ChinaCH 2%Switzerland

Why It Matters

No EPA sector or FDA product records name a use for this chemical.

Chemical Identity

CAS145026-81-9
PubChem CIDNot recorded
DTXSIDDTXSID8037704
FormulaC15H18N4O7S
Mol. Weight398.39 g/mol
SMILESCCCOC1=NN(C(=O)NS(=O)(=O)C2=C(C=CC=C2)C(=O)OC)C(=O)N1C

Data Sources

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Brief citations

Propoxycarbazone (CAS 145026-81-9) https://chemicalindependence.com/chemical/145026-81-9/ EPA TSCA Inventory: CAS 145026-81-9. Retrieved 2026-10-04. https://www.epa.gov/tsca-inventory US Census international trade: HS 293590 for CAS 145026-81-9. Reporting year: 2024. https://usatrade.census.gov/