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1-Naphthalenesulfonic acid, 6-diazo-5,6-dihydro-5-oxo-, ester with 2,6-bis[(4-hydroxy-3,5-dimethylphenyl)methyl]-4-methylphenol

CAS 143243-42-9

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

Molecular structure of 143243-42-9
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

CAS143243-42-9
PubChem CIDNot recorded
DTXSIDDTXSID801368558
FormulaNot recorded
Mol. WeightNot recorded
SMILESNot recorded

Data Sources

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Brief citations

1-Naphthalenesulfonic acid, 6-diazo-5,6-dihydro-5-oxo-, ester with 2,6-bis[(4-hydroxy-3,5-dimethylphenyl)methyl]-4-methylphenol (CAS 143243-42-9) https://chemicalindependence.com/chemical/143243-42-9/ EPA TSCA Inventory: CAS 143243-42-9. Retrieved 2026-10-04. https://www.epa.gov/tsca-inventory