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1,5-Naphthalenedisulfonic acid, 3-[2-[4-[2-[1-hydroxy-6-(phenylamino)-3-sulfo-2-naphthalenyl]diazenyl]-5-methoxy-2-methylphenyl]diazenyl]-, potassium salt (1:3)

CAS 222739-15-3

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

Molecular structure of 222739-15-3
3 K⁺
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

CAS222739-15-3
PubChem CIDNot recorded
DTXSIDDTXSID30890436
FormulaC34H24K3N5O11S3
Mol. Weight892.06 g/mol
SMILES[K+].[K+].[K+].COC1=C(C=C(C)C(=C1)N=NC1=CC2=C(C=CC=C2S([O-])(=O)=O)C(=C1)S([O-])(=O)=O)N=NC1=C(O)C2=C(C=C(NC3=CC=CC=C3)C=C2)C=C1S([O-])(=O)=O

Data Sources

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Brief citations

1,5-Naphthalenedisulfonic acid, 3-[2-[4-[2-[1-hydroxy-6-(phenylamino)-3-sulfo-2-naphthalenyl]diazenyl]-5-methoxy-2-methylphenyl]diazenyl]-, potassium salt (1:3) (CAS 222739-15-3) https://chemicalindependence.com/chemical/222739-15-3/ EPA TSCA Inventory: CAS 222739-15-3. Retrieved 2026-10-04. https://www.epa.gov/tsca-inventory