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1H-Pyrazole-3-carboxylic acid, 1-(4-carboxyphenyl)-4,5-dihydro-5-oxo-, 3-ethyl ester

CAS 137566-04-2

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

Molecular structure of 137566-04-2
US productionNot reported
Top sourceNo public record

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

Where It Comes From

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

Why It Matters

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

Chemical Identity

CAS137566-04-2
PubChem CIDNot recorded
DTXSIDDTXSID70888635
FormulaC13H12N2O5
Mol. Weight276.248 g/mol
SMILESCCOC(=O)C1=NN(C(=O)C1)C1=CC=C(C=C1)C(O)=O

Data Sources

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Brief citations

1H-Pyrazole-3-carboxylic acid, 1-(4-carboxyphenyl)-4,5-dihydro-5-oxo-, 3-ethyl ester (CAS 137566-04-2) https://chemicalindependence.com/chemical/137566-04-2/ EPA TSCA Inventory: CAS 137566-04-2. Retrieved 2026-10-04. https://www.epa.gov/tsca-inventory