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Tetrasodium;3-[[N-(2-carboxy-5-sulfonatoanilino)-C-[4-(2-chloroethylsulfonyl)phenyl]carbonimidoyl]diazenyl]-4-hydroxy-5-[[C-oxido-N-[2-(2-sulfonatooxyethylsulfonyl)ethyl]carbonimidoyl]amino]benzenesulfonate;copper

CAS 158640-34-7

Cuprate(4-), [2-[2-[[4-[(2-chloroethyl)sulfonyl]phenyl][2-[2-(hydroxy-κO)-5-sulfo-3-[[[[2-[[2-(sulfooxy)ethyl]sulfonyl]ethyl]amino]carbonyl]amino]phenyl]diazenyl-κN2]methyl]diazenyl-κN1]-4-sulfobenzoato(6-)-κO]-, sodium (1:4)

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

Molecular structure of 158640-34-7
4 Na⁺ · 1 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

CAS158640-34-7
PubChem CIDNot recorded
DTXSIDDTXSID601015163
FormulaC27H23ClCuN6Na4O18S5
Mol. Weight1070.76 g/mol
SMILES[Na+].[Na+].[Na+].[Na+].[Cu++].[O-]\C(NC1=C([O-])C(=CC(=C1)S([O-])(=O)=O)\N=N\C(=N/NC1=C(C=CC(=C1)S([O-])(=O)=O)C([O-])=O)\C1=CC=C(C=C1)S(=O)(=O)CCCl)=N/CCS(=O)(=O)CCOS([O-])(=O)=O

Data Sources

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Brief citations

Tetrasodium;3-[[N-(2-carboxy-5-sulfonatoanilino)-C-[4-(2-chloroethylsulfonyl)phenyl]carbonimidoyl]diazenyl]-4-hydroxy-5-[[C-oxido-N-[2-(2-sulfonatooxyethylsulfonyl)ethyl]carbonimidoyl]amino]benzenesulfonate;copper (CAS 158640-34-7) https://chemicalindependence.com/chemical/158640-34-7/ EPA TSCA Inventory: CAS 158640-34-7. Retrieved 2026-10-04. https://www.epa.gov/tsca-inventory