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Phenol, 2-[2-(2-nitrophenyl)diazenyl]-4-(1,1,3,3-tetramethylbutyl)-

CAS 51656-57-6

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

Molecular structure of 51656-57-6
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

CAS51656-57-6
PubChem CIDNot recorded
DTXSIDDTXSID5068657
FormulaC20H25N3O3
Mol. Weight355.438 g/mol
SMILESCC(C)(C)CC(C)(C)C1=CC(N=NC2=C(C=CC=C2)[N+]([O-])=O)=C(O)C=C1

Data Sources

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Brief citations

Phenol, 2-[2-(2-nitrophenyl)diazenyl]-4-(1,1,3,3-tetramethylbutyl)- (CAS 51656-57-6) https://chemicalindependence.com/chemical/51656-57-6/ EPA TSCA Inventory: CAS 51656-57-6. Retrieved 2026-10-04. https://www.epa.gov/tsca-inventory