Flag of the United StatesAmerican Chemical Independence

2,7-Naphthalenedisulfonic acid, 4-amino-3-[2-[4-[[4-[2-(2-amino-4-hydroxyphenyl)diazenyl]phenyl]amino]-3-sulfophenyl]diazenyl]-5-hydroxy-6-(2-phenyldiazenyl)-

CAS 72066-88-7

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

Molecular structure of 72066-88-7
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

CAS72066-88-7
PubChem CIDNot recorded
DTXSIDDTXSID6072479
FormulaC34H27N9O11S3
Mol. Weight833.82 g/mol
SMILESNC1=CC(O)=CC=C1N=NC1=CC=C(NC2=CC=C(C=C2S(O)(=O)=O)N=NC2=C(C=C3C=C(C(N=NC4=CC=CC=C4)=C(O)C3=C2N)S(O)(=O)=O)S(O)(=O)=O)C=C1

Data Sources

← Back to Dashboard

Brief citations

2,7-Naphthalenedisulfonic acid, 4-amino-3-[2-[4-[[4-[2-(2-amino-4-hydroxyphenyl)diazenyl]phenyl]amino]-3-sulfophenyl]diazenyl]-5-hydroxy-6-(2-phenyldiazenyl)- (CAS 72066-88-7) https://chemicalindependence.com/chemical/72066-88-7/ EPA TSCA Inventory: CAS 72066-88-7. Retrieved 2026-10-04. https://www.epa.gov/tsca-inventory