Flag of the United StatesAmerican Chemical Independence

Coomassie brilliant blue R

CAS 6104-59-2

Benzenemethanaminium, N-[4-[[4-[(4-ethoxyphenyl)amino]phenyl][4-[ethyl[(3-sulfophenyl)methyl]amino]phenyl]methylene]-2,5-cyclohexadien-1-ylidene]-N-ethyl-3-sulfo-, inner salt, sodium salt (1:1)

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

Molecular structure of 6104-59-2
1 Na⁺
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.

Vendor Pricing

$0.27/gAaron Chemicals LLC
CountryHong Kong
Pack$133.00 / 500 g
Purity98%
Vendors15 available

Prices reflect listed pack sizes. Small research packs run far above bulk rates.

14 more vendors
VendorCountry$/gPackPurity
Angene ChemicalChina → Hong Kong$0.28400 g—
A2B Chem LLCUnited States$0.91100 g—
AK Scientific, Inc.United States$1.04250 g90%
AA BLOCKSUnited States$1.17100 g—
AstaTech, IncUnited States$1.2025 g95%
Key Organics Ltd.United Kingdom$1.21100 g90%
Sigma-Aldrich (Rush Stock)Germany$2.26500 g—
Sigma-AldrichGermany$2.26500 g—
Ambeed, Inc.United States$2.5625 g98%
Cayman EuropeEstonia$2.67100 g—
Angene International LimitedUnited States$4.6825 g93%
AK Scientific SpecializedUnited States$5.1625 g93%
MedKoo Biosciences, IncUnited States$22.0025 g98%
AngeneChina → Hong Kong$4266.6730 mg—

Chemical Identity

CAS6104-59-2
PubChem CIDNot recorded
DTXSIDDTXSID80910613
FormulaC45H44N3NaO7S2
Mol. Weight825.97 g/mol
SMILES[Na+].CCOC1=CC=C(NC2=CC=C(C=C2)C(C2=CC=C(C=C2)N(CC)CC2=CC=CC(=C2)S([O-])(=O)=O)=C2C=CC(C=C2)=[N+](CC)CC2=CC=CC(=C2)S([O-])(=O)=O)C=C1

Data Sources

← Back to Dashboard

Brief citations

Coomassie brilliant blue R (CAS 6104-59-2) https://chemicalindependence.com/chemical/6104-59-2/ EPA TSCA Inventory: CAS 6104-59-2. Retrieved 2026-10-04. https://www.epa.gov/tsca-inventory