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3-(Ethylamino)-2-methyl-7-((o-tolyl)amino)phenoxazin-5-ium formate

CAS 71566-77-3

Phenoxazin-5-ium, 3-(ethylamino)-2-methyl-7-[(2-methylphenyl)amino]-, formate (1:1)

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

Molecular structure of 71566-77-3
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

CAS71566-77-3
PubChem CIDNot recorded
DTXSIDDTXSID6072390
FormulaC23H23N3O3
Mol. Weight389.455 g/mol
SMILES[O-]C=O.CCNC1=CC2=[O+]C3=CC(NC4=C(C)C=CC=C4)=CC=C3N=C2C=C1C

Data Sources

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Brief citations

3-(Ethylamino)-2-methyl-7-((o-tolyl)amino)phenoxazin-5-ium formate (CAS 71566-77-3) https://chemicalindependence.com/chemical/71566-77-3/ EPA TSCA Inventory: CAS 71566-77-3. Retrieved 2026-10-04. https://www.epa.gov/tsca-inventory