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Copper(2+) sodium 2-({1-oxido-6-[({5-oxido-6-[(2-oxido-5-sulfonatophenyl)diazenyl]-7-sulfonatonaphthalen-2-yl}carbamoyl)amino]-3-sulfonatonaphthalen-2-yl}diazenyl)benzoate (2/3/1)

CAS 6837-87-2

Cuprate(3-), [μ-[2-[2-[1-(hydroxy-κO)-6-[[[[5-(hydroxy-κO)-6-[2-[2-(hydroxy-κO)-5-sulfophenyl]diazenyl-κN1]-7-sulfo-2-naphthalenyl]amino]carbonyl]amino]-3-sulfo-2-naphthalenyl]diazenyl-κN1]benzoato(7-)-κO]]di-, sodium (1:3)

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

Molecular structure of 6837-87-2
3 Na⁺ · 2 Cu²⁺
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

CAS6837-87-2
PubChem CIDNot recorded
DTXSIDDTXSID50987918
FormulaC34H17Cu2N6Na3O15S3
Mol. Weight1041.78 g/mol
SMILES[Na+].[Na+].[Na+].[Cu++].[Cu++].[O-]C(=O)C1=CC=CC=C1N=NC1=C(C=C2C=C(NC(=O)NC3=CC4=CC(=C(N=NC5=C([O-])C=CC(=C5)S([O-])(=O)=O)C([O-])=C4C=C3)S([O-])(=O)=O)C=CC2=C1[O-])S([O-])(=O)=O

Data Sources

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Brief citations

Copper(2+) sodium 2-({1-oxido-6-[({5-oxido-6-[(2-oxido-5-sulfonatophenyl)diazenyl]-7-sulfonatonaphthalen-2-yl}carbamoyl)amino]-3-sulfonatonaphthalen-2-yl}diazenyl)benzoate (2/3/1) (CAS 6837-87-2) https://chemicalindependence.com/chemical/6837-87-2/ EPA TSCA Inventory: CAS 6837-87-2. Retrieved 2026-10-04. https://www.epa.gov/tsca-inventory