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C.I. Leuco Sulphur Brown 26

CAS 71838-68-1

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

Molecular structure of 71838-68-1
2 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

CAS71838-68-1
PubChem CIDNot recorded
DTXSIDDTXSID40992551
FormulaC22H24N6Na2O2S3
Mol. Weight546.63 g/mol
SMILES[Na+].[Na+].CC1=CC(N)=CC(S)=C1N.CC1=C(N)C(SC2=C(C=CC(=C2)N=C[O-])N=C[O-])=CC(N)=C1S

Data Sources

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Brief citations

C.I. Leuco Sulphur Brown 26 (CAS 71838-68-1) https://chemicalindependence.com/chemical/71838-68-1/ EPA TSCA Inventory: CAS 71838-68-1. Retrieved 2026-10-04. https://www.epa.gov/tsca-inventory