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2-Naphthalenesulfonic acid, 6-[2-[2,4-dihydroxy-3-[2-(4-nitrophenyl)diazenyl]phenyl]diazenyl]-4-hydroxy-3-[2-(2-hydroxy-3-nitro-5-sulfophenyl)diazenyl]-

CAS 80301-65-1

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

Molecular structure of 80301-65-1
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

CAS80301-65-1
PubChem CIDNot recorded
DTXSIDDTXSID4072867
FormulaC28H18N8O14S2
Mol. Weight754.61 g/mol
SMILESOC1=C(N=NC2=CC=C(C=C2)[N+]([O-])=O)C(O)=C(C=C1)N=NC1=CC2=C(O)C(N=NC3=C(O)C(=CC(=C3)S(O)(=O)=O)[N+]([O-])=O)=C(C=C2C=C1)S(O)(=O)=O

Data Sources

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Brief citations

2-Naphthalenesulfonic acid, 6-[2-[2,4-dihydroxy-3-[2-(4-nitrophenyl)diazenyl]phenyl]diazenyl]-4-hydroxy-3-[2-(2-hydroxy-3-nitro-5-sulfophenyl)diazenyl]- (CAS 80301-65-1) https://chemicalindependence.com/chemical/80301-65-1/ EPA TSCA Inventory: CAS 80301-65-1. Retrieved 2026-10-04. https://www.epa.gov/tsca-inventory