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3H-Naphtho[1,2,3-de]quinoline-1-carboxylic acid, 6-[(4-chloro-2-sulfophenyl)amino]-2,7-dihydro-4(or 5)-methyl-2,7-dioxo-, 1-ethyl ester

CAS 72121-77-8

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

Molecular structure of 72121-77-8
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

CAS72121-77-8
PubChem CIDNot recorded
DTXSIDDTXSID30992843
FormulaC26H21ClN2O7S
Mol. Weight540.97 g/mol
SMILESCCOC(=O)N1C(=O)C=C2C3=C(C)C=C(NC4=C(C=C(Cl)C=C4)S(O)(=O)=O)C(=O)C3C=C3CC=CC1=C23

Data Sources

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Brief citations

3H-Naphtho[1,2,3-de]quinoline-1-carboxylic acid, 6-[(4-chloro-2-sulfophenyl)amino]-2,7-dihydro-4(or 5)-methyl-2,7-dioxo-, 1-ethyl ester (CAS 72121-77-8) https://chemicalindependence.com/chemical/72121-77-8/ EPA TSCA Inventory: CAS 72121-77-8. Retrieved 2026-10-04. https://www.epa.gov/tsca-inventory