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Vat brown 1

CAS 2475-33-4

Naphth[2',3':6,7]indolo[2,3-c]dinaphtho[2,3-a:2',3'-i]carbazole-5,10,15,17,22,24-hexone, 16,23-dihydro-

Companies reported imports and no US production of this chemical to EPA for 2023.

Molecular structure of 2475-33-4
US productionZero
Import volume9.5K lb
Import dependency100%
Top sourceNo public record

Production is reported production, not a complete census of factories. Production reporting year: 2023.

Where It Comes From

EPA reports by year
2023
US production Zero · Imports 9.5K lb
EPA-registered importers (1)
Atul Usa

Why It Matters

Sectors
Textiles
Downstream UsesNot recorded
FDA Shortage Status
No FDA shortage records

Industrial Uses

  • •Dye in Synthetic Dye and Pigment ManufacturingProcessing—incorporation into formulation, mixture, or reaction product

Vendor Pricing

$370.00/gA2B Chem LLC (1 week)
CountryUnited States
Pack$1850.00 / 5 g
Purity95%
Vendors2 available

Prices reflect listed pack sizes. Small research packs run far above bulk rates.

1 more vendor
VendorCountry$/gPackPurity
AA BLOCKS (1 week)United States$392.605 g95%

Chemical Identity

CAS2475-33-4
PubChem CIDNot recorded
DTXSIDDTXSID7026283
FormulaC42H18N2O6
Mol. Weight646.614 g/mol
SMILESO=C1C2=CC=CC=C2C(=O)C2=C3NC4=C5C(=O)C6=CC=CC=C6C(=O)C5=C5NC6=C7C(=O)C8=C(C=CC=C8)C(=O)C7=CC=C6C5=C4C3=CC=C12

Data Sources

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Brief citations

Vat brown 1 (CAS 2475-33-4) https://chemicalindependence.com/chemical/2475-33-4/ EPA TSCA Inventory: CAS 2475-33-4. Retrieved 2026-04-29. https://www.epa.gov/tsca-inventory EPA Chemical Data Reporting: 2475-33-4. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 2475-33-4. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting