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EINECS 275-640-9

CAS 71566-55-7

Xanthylium, 9-(2-carboxyphenyl)-3,6-bis(diethylamino)-, bis[3-[2-[4,5-dihydro-3-methyl-5-(oxo-κO)-1-phenyl-1H-pyrazol-4-yl]diazenyl-κN1]-4-(hydroxy-κO)-N-[3-(1-methylethoxy)propyl]benzenesulfonamidato(2-)]cobaltate(1-) (1:1)

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

Molecular structure of 71566-55-7
1 Co³⁺
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

CAS71566-55-7
PubChem CIDNot recorded
DTXSIDDTXSID801015276
FormulaC72H81CoN12O13S2
Mol. Weight1445.56 g/mol
SMILES[Co+3].CCN(CC)C1=CC2=[O+]C3=CC(=CC=C3C(=C2C=C1)C1=C(C=CC=C1)C(O)=O)N(CC)CC.CC(C)OCCCNS(=O)(=O)C1=CC(\N=N\[C-]2C(C)=NN(C2=O)C2=CC=CC=C2)=C([O-])C=C1.CC(C)OCCCNS(=O)(=O)C1=CC(\N=N\[C-]2C(C)=NN(C2=O)C2=CC=CC=C2)=C([O-])C=C1

Data Sources

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Brief citations

EINECS 275-640-9 (CAS 71566-55-7) https://chemicalindependence.com/chemical/71566-55-7/ EPA TSCA Inventory: CAS 71566-55-7. Retrieved 2026-10-04. https://www.epa.gov/tsca-inventory