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1-Naphthalenesulfonic acid, 6-diazo-5,6-dihydro-5-oxo-, ester with 4,4',4''-methylidynetris[phenol]

CAS 138636-86-9

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

Molecular structure of 138636-86-9
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

CAS138636-86-9
PubChem CIDNot recorded
DTXSIDDTXSID201014775
FormulaC29H22N2O7S
Mol. Weight542.56 g/mol
SMILESOS(=O)(=O)C1=C2C=CC(=[N+]=[N-])C(=O)C2=CC=C1.OC1=CC=C(C=C1)C(C1=CC=C(O)C=C1)C1=CC=C(O)C=C1

Data Sources

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Brief citations

1-Naphthalenesulfonic acid, 6-diazo-5,6-dihydro-5-oxo-, ester with 4,4',4''-methylidynetris[phenol] (CAS 138636-86-9) https://chemicalindependence.com/chemical/138636-86-9/ EPA TSCA Inventory: CAS 138636-86-9. Retrieved 2026-10-04. https://www.epa.gov/tsca-inventory