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C.I. Reactive Yellow 2

CAS 50662-99-2

Benzenesulfonic acid, 4-[[4-chloro-6-[(4-sulfophenyl)amino]-1,3,5-triazin-2-yl]amino]-2-[2-[1-(2,5-dichloro-4-sulfophenyl)-4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-4-yl]diazenyl]-, sodium salt (1:3)

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

Molecular structure of 50662-99-2
3 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

CAS50662-99-2
PubChem CIDNot recorded
DTXSIDDTXSID70889748
FormulaC25H15Cl3N9Na3O10S3
Mol. Weight872.95 g/mol
SMILES[Na+].[Na+].[Na+].CC1=NN(C(=O)C1N=NC1=C(C=CC(NC2=NC(NC3=CC=C(C=C3)S([O-])(=O)=O)=NC(Cl)=N2)=C1)S([O-])(=O)=O)C1=C(Cl)C=C(C(Cl)=C1)S([O-])(=O)=O

Data Sources

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Brief citations

C.I. Reactive Yellow 2 (CAS 50662-99-2) https://chemicalindependence.com/chemical/50662-99-2/ EPA TSCA Inventory: CAS 50662-99-2. Retrieved 2026-10-04. https://www.epa.gov/tsca-inventory