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C.I. Acid Orange 137

CAS 15139-76-1

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

Molecular structure of 15139-76-1
2 Na⁺
US productionNot reported
Top sourceNo public record

This chemical is not on EPA’s Toxic Substances Control Act inventory, the list behind EPA’s production survey.

Why supply is unknown

No public supply or use records

Neither EPA production reports, Census trade data nor FDA listings cover this chemical, so no one publishes where the US gets it or what it goes into. Why supply is unknown

Chemical Identity

CAS15139-76-1
PubChem CIDNot recorded
DTXSIDDTXSID7044219
FormulaC22H16N4Na2O9S2
Mol. Weight590.49 g/mol
SMILES[Na+].[Na+].CCOC(=O)C1=C(\N=N\C2=CC=C(C3=C2C=CC=C3)S([O-])(=O)=O)C(=O)N(N1)C1=CC=C(C=C1)S([O-])(=O)=O

Data Sources

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Brief citations

C.I. Acid Orange 137 (CAS 15139-76-1) https://chemicalindependence.com/chemical/15139-76-1/ EPA CompTox (DSSTox): 15139-76-1. Retrieved 2026-04-29. https://comptox.epa.gov/dashboard/chemical/details/DTXSID7044219