C.I. Acid Yellow 49
CAS 12239-15-5
Benzenesulfonic acid, 4-[2-(5-amino-3-methyl-1-phenyl-1H-pyrazol-4-yl)diazenyl]-2,5-dichloro-
EPA and Census publish no US supply data for this chemical.
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 unknownWhere 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.
Vendor Pricing
$153.00/gAK Scientific, Inc.
CountryUnited States
Pack$153.00 / 1 g
PurityNot recorded
Vendors4 available
Prices reflect listed pack sizes. Small research packs run far above bulk rates.
3 more vendors
| Vendor | Country Supplier country. Where available, shows shipping origin. When the supplier ships from a different country than where they are registered, both are shown. Most suppliers show registration country only. | $/g | Pack | Purity |
|---|---|---|---|---|
| A2B Chem LLC | United States | $165.00 | 1 g | — |
| AA BLOCKS | United States | $170.00 | 1 g | — |
| Angene International Limited | United States | $270.00 | 1 g | — |
Chemical Identity
CAS12239-15-5
PubChem CIDNot recorded
DTXSIDDTXSID9065289
FormulaC16H13Cl2N5O3S
Mol. Weight426.27 g/mol
SMILESCC1=NN(C(N)=C1N=NC1=C(Cl)C=C(C(Cl)=C1)S(O)(=O)=O)C1=CC=CC=C1
Data Sources
- EPA TSCA InventoryRetrieved 2026-10-04
Brief citations
C.I. Acid Yellow 49 (CAS 12239-15-5) https://chemicalindependence.com/chemical/12239-15-5/ EPA TSCA Inventory: CAS 12239-15-5. Retrieved 2026-10-04. https://www.epa.gov/tsca-inventory