Flag of the United StatesAmerican Chemical Independence

Benzenesulfonic acid, 4-[[3-[2-[2-hydroxy-3-[[(4-methoxyphenyl)amino]carbonyl]-1-naphthalenyl]diazenyl]-4-methylbenzoyl]amino]-, calcium salt (2:1)

CAS 43035-18-3

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

Molecular structure of 43035-18-3
1 Ca²⁺
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

CAS43035-18-3
PubChem CIDNot recorded
DTXSIDDTXSID40890861
FormulaC64H50CaN8O14S2
Mol. Weight1259.34 g/mol
SMILES[Ca++].COC1=CC=C(NC(=O)C2=CC3=CC=CC=C3C(N=NC3=C(C)C=CC(=C3)C(=O)NC3=CC=C(C=C3)S([O-])(=O)=O)=C2O)C=C1.COC1=CC=C(NC(=O)C2=CC3=CC=CC=C3C(N=NC3=C(C)C=CC(=C3)C(=O)NC3=CC=C(C=C3)S([O-])(=O)=O)=C2O)C=C1

Data Sources

← Back to Dashboard

Brief citations

Benzenesulfonic acid, 4-[[3-[2-[2-hydroxy-3-[[(4-methoxyphenyl)amino]carbonyl]-1-naphthalenyl]diazenyl]-4-methylbenzoyl]amino]-, calcium salt (2:1) (CAS 43035-18-3) https://chemicalindependence.com/chemical/43035-18-3/ EPA TSCA Inventory: CAS 43035-18-3. Retrieved 2026-10-04. https://www.epa.gov/tsca-inventory