1,3,6-Naphthalenetrisulfonic acid, 7-[2-[2-[(aminocarbonyl)amino]-4-[[4-[4-[2-[[4-[[3-[(aminocarbonyl)amino]-4-[2-(3,6,8-trisulfo-2-naphthalenyl)diazenyl]phenyl]amino]-6-chloro-1,3,5-triazin-2-yl]amino]ethyl]-1-piperazinyl]-6-chloro-1,3,5-triazin-2-yl]amino]phenyl]diazenyl]-, lithium potassium sodium salt (1:?:?:?)

CAS 202667-43-4

Used in 1 industrial sector tracked by the EPA.

Molecular structure of 202667-43-4 — 2 K⁺ · 2 Li⁺ · 2 Na⁺

US productionNot reported

Top sourceNo public record

EPA lists this chemical for 2023 but publishes zero or no volume for both production and imports.

Why supply is unknown

Where It Comes From

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

EPA reports by year

2023: US production Not published · Imports Not published

Domestic parents -- activity not disclosed (1)

EPA records name a US company for this chemical but do not disclose whether the company made it here or imported it.

Dystar

Why It Matters

Sectors

Textiles

Downstream UsesNot recorded

FDA Shortage Status

Whether any manufacturer currently reports this drug as in shortage on the FDA Drug Shortages database. "Active Shortage" means at least one presentation has status "current."

No FDA shortage records

Industrial Uses

•Dye in Textiles, apparel, and leather manufacturing (0%)Processing—incorporation into formulation, mixture, or reaction product

Chemical Identity

CAS202667-43-4

PubChem CIDNot recorded

DTXSIDDTXSID20905008

FormulaC46H35Cl2K2Li2N19Na2O20S6

Mol. Weight1575.22 g/mol

SMILES[Li+].[Li+].[Na+].[Na+].[K+].[K+].OS(=O)(=O)C1=CC2=CC(=CC(=C2C=C1\N=N\C1=C(NC([O-])=N)C=C(C=C1)\N=C1/NC(Cl)=N\C(N1)=N\CCN1CCN(CC1)C1=NC(Cl)=N\C(N1)=N\C1=CC(NC([O-])=N)=C(C=C1)\N=N\C1=CC2=C(C=C(C=C2C=C1S(O)(=O)=O)S([O-])(=O)=O)S([O-])(=O)=O)S([O-])(=O)=O)S([O-])(=O)=O

Data Sources

EPA TSCA InventoryRetrieved 2026-04-29
EPA Chemical Data ReportingReporting year: 2023 · Retrieved 2026-10-04
EPA Chemical Data ReportingReporting year: 2023 · Retrieved 2026-10-04

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Brief citations

1,3,6-Naphthalenetrisulfonic acid, 7-[2-[2-[(aminocarbonyl)amino]-4-[[4-[4-[2-[[4-[[3-[(aminocarbonyl)amino]-4-[2-(3,6,8-trisulfo-2-naphthalenyl)diazenyl]phenyl]amino]-6-chloro-1,3,5-triazin-2-yl]amino]ethyl]-1-piperazinyl]-6-chloro-1,3,5-triazin-2-yl]amino]phenyl]diazenyl]-, lithium potassium sodium salt (1:?:?:?) (CAS 202667-43-4) https://chemicalindependence.com/chemical/202667-43-4/ EPA TSCA Inventory: CAS 202667-43-4. Retrieved 2026-04-29. https://www.epa.gov/tsca-inventory EPA Chemical Data Reporting: 202667-43-4. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 202667-43-4. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting