Coomassie® brilliant blue R-250, pure

Supplier: Thermo Scientific

Synonyms: Serva Blue R, Brillant blue R, N-[4-[[4-[(4-Ethoxyphenyl)amino]phenyl][4-[ethyl[(3-sulphophenyl)methyl]amino]phenyl]methylene]-2,5-cyclohexadien-1-ylidene]-N-ethyl-3-sulpho-benzenemethanaminium inner salt, sodium salt (1:1), Coomassie Blue R 250, Brilliant Cyanine 6B, Hydrogen [4-[4-(p-ethoxyanilino)-4'-[ethyl(m-sulphonatobenzyl)amino]benzhydrylene]cyclohexa-2,5-dien-1-ylidene](ethyl)(m-sulphonatobenzyl)ammonium monosodium salt, Acid Blue 83, Brilliant Blue R250, Brilliant Blue R, Brilliant indocyanine 6B

191490050 191490250 191491000 191495000
ACRO191490050EA 45 GBP
ACRO191490050 ACRO191490250 ACRO191491000 ACRO191495000
Coomassie® brilliant blue R-250, pure
Coomassie® Brilliant Blue R-250
Formula: C₄₅H₄₄N₃NaO₇S₂
MW: 825,98 g/mol
Melting Pt: 174…180 °C
Storage Temperature: Ambient
MDL Number: MFCD00041762
CAS Number: 6104-59-2
EINECS: 228-060-5

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Specification Test Results

Appearance Bordeaux to dark purple-brown Crystalline powder
Infrared spectrum Conforms
UV Lambda max 588 to 596 nm (in 50:50 ethanol:water)
Absorption Ratio P-15/P+15 1 to 1.2
Specific absorbance A (1%/1cm) ≥700 (at lambda max.)

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