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7H-Benzimidazo[2,1-a]benzo[3,4][2]benzothiopyrano[7,8,1-def]isoquinolin-7-one

CAS 53304-32-8

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

Molecular structure of 53304-32-8
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

CAS53304-32-8
PubChem CIDNot recorded
DTXSIDDTXSID2068840
FormulaC24H12N2OS
Mol. Weight376.43 g/mol
SMILESO=C1N2C3=C(C=CC=C3)N=C2C2=CC=C3SC4=CC=CC=C4C4=CC=C1C2=C34

Data Sources

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Brief citations

7H-Benzimidazo[2,1-a]benzo[3,4][2]benzothiopyrano[7,8,1-def]isoquinolin-7-one (CAS 53304-32-8) https://chemicalindependence.com/chemical/53304-32-8/ EPA TSCA Inventory: CAS 53304-32-8. Retrieved 2026-10-04. https://www.epa.gov/tsca-inventory