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Chromate(1-), [3-[4-[2-[5-chloro-2-(hydroxy-κO)phenyl]diazenyl-κN1]-4,5-dihydro-3-methyl-5-(oxo-κO)-1H-pyrazol-1-yl]benzenesulfonamidato(2-)][4-[2-[5-chloro-2-(hydroxy-κO)phenyl]diazenyl-κN1]-2,4-dihydro-5-methyl-2-phenyl-3H-pyrazol-3-onato(2-)-κO3]-, hydrogen (1:1)

CAS 72509-81-0

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

Molecular structure of 72509-81-0
1 Cr³⁺ · 1 H⁺
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

CAS72509-81-0
PubChem CIDNot recorded
DTXSIDDTXSID80904456
FormulaC32H24Cl2CrN9O6S
Mol. Weight785.56 g/mol
SMILES[H+].[Cr+3].CC1=NN(C(=O)[C-]1\N=N\C1=CC(Cl)=CC=C1[O-])C1=CC=CC=C1.CC1=NN(C(=O)[C-]1\N=N\C1=CC(Cl)=CC=C1[O-])C1=CC(=CC=C1)S(N)(=O)=O

Data Sources

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Brief citations

Chromate(1-), [3-[4-[2-[5-chloro-2-(hydroxy-κO)phenyl]diazenyl-κN1]-4,5-dihydro-3-methyl-5-(oxo-κO)-1H-pyrazol-1-yl]benzenesulfonamidato(2-)][4-[2-[5-chloro-2-(hydroxy-κO)phenyl]diazenyl-κN1]-2,4-dihydro-5-methyl-2-phenyl-3H-pyrazol-3-onato(2-)-κO3]-, hydrogen (1:1) (CAS 72509-81-0) https://chemicalindependence.com/chemical/72509-81-0/ EPA TSCA Inventory: CAS 72509-81-0. Retrieved 2026-10-04. https://www.epa.gov/tsca-inventory