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C.I. Vat Orange 23

CAS 1324-11-4

Dibenzo[b,def]chrysene-7,14-dione, dibromo-

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

Molecular structure of 1324-11-4
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

CAS1324-11-4
PubChem CIDNot recorded
DTXSIDDTXSID9051668
FormulaC24H10Br2O2
Mol. Weight490.15 g/mol
SMILESBrC1=CC=C(Br)C2=C1C(=O)C1=CC=C3C4=C(C=CC=C4)C(=O)C4=CC=C2C1=C34

Data Sources

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Brief citations

C.I. Vat Orange 23 (CAS 1324-11-4) https://chemicalindependence.com/chemical/1324-11-4/ EPA TSCA Inventory: CAS 1324-11-4. Retrieved 2026-10-04. https://www.epa.gov/tsca-inventory