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1,5-Naphthalenedisulfonic acid, 2-[2-[8-[[4-chloro-6-[[3-[[[4-chloro-6-[[7-[2-(1,5-disulfo-2-naphthalenyl)diazenyl]-8-hydroxy-3,6-disulfo-1-naphthalenyl]amino]-1,3,5-triazin-2-yl]amino]methyl]phenyl]amino]-1,3,5-triazin-2-yl]amino]-1-hydroxy-3,6-disulfo-2-naphthalenyl]diazenyl]-, sodium salt (1:8)

CAS 186554-26-7

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

Molecular structure of 186554-26-7
8 Na⁺
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

CAS186554-26-7
PubChem CIDNot recorded
DTXSIDDTXSID901335730
FormulaC53H28Cl2N14Na8O26S8
Mol. Weight1788.18 g/mol
SMILES[Na+].[Na+].[Na+].[Na+].[Na+].[Na+].[Na+].[Na+].OC1=C(N=NC2=C(C3=C(C=C2)C(=CC=C3)S([O-])(=O)=O)S([O-])(=O)=O)C(=CC2=C1C(NC1=NC(NCC3=CC=CC(NC4=NC(NC5=CC(=CC6=C5C(O)=C(N=NC5=C(C7=C(C=C5)C(=CC=C7)S([O-])(=O)=O)S([O-])(=O)=O)C(=C6)S([O-])(=O)=O)S([O-])(=O)=O)=NC(Cl)=N4)=C3)=NC(Cl)=N1)=CC(=C2)S([O-])(=O)=O)S([O-])(=O)=O

Data Sources

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Brief citations

1,5-Naphthalenedisulfonic acid, 2-[2-[8-[[4-chloro-6-[[3-[[[4-chloro-6-[[7-[2-(1,5-disulfo-2-naphthalenyl)diazenyl]-8-hydroxy-3,6-disulfo-1-naphthalenyl]amino]-1,3,5-triazin-2-yl]amino]methyl]phenyl]amino]-1,3,5-triazin-2-yl]amino]-1-hydroxy-3,6-disulfo-2-naphthalenyl]diazenyl]-, sodium salt (1:8) (CAS 186554-26-7) https://chemicalindependence.com/chemical/186554-26-7/ EPA TSCA Inventory: CAS 186554-26-7. Retrieved 2026-10-04. https://www.epa.gov/tsca-inventory