Coomassie brilliant blue

Coomassie Brilliant Blue R-250

Names
Other names C.I. 42660, C.I. Acid Blue 83 Brilliant indocyanine 6B, Brillantindocyanin 6B Brilliant Cyanine 6B, Serva Blue R
Identifiers
CAS Number	6104-59-2 Y
3D model (JSmol)	Interactive image
ECHA InfoCard	100.025.509
PubChem CID	61365
UNII	TKL1K0PT9A Y
CompTox Dashboard (EPA)	DTXSID80910613
SMILES CCN(CC1=CC(=CC=C1)S(=O)(=O)O)C2=CC=C(C=C2)C(=C3C=CC(=[N+](CC)CC4=CC(=CC=C4)S(=O)(=O)[O-])C=C3)C5=CC=C(C=C5)NC6=CC=C(C=C6)OCC.[Na+]
Properties
Chemical formula	C45H44N3NaO7S2 (Sodium salt)
Molar mass	825.97 g/mol
Solubility in water	Insoluble in cold, slightly soluble in hot (bright red blue)
Solubility in ethanol	Slightly soluble
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Y verify (what is YN ?) Infobox references

Coomassie brilliant blue G-250

Solid Coomassie brilliant blue G Brilliant blue G in isopropanol solution
Names
Other names C.I. 42655, C.I. Acid Blue 90 Brilliant indocyanine G, Brillantindocyanin G Xylene Brilliant Cyanine G, Serva Blue G
Identifiers
CAS Number	6104-58-1
3D model (JSmol)	Interactive image
ECHA InfoCard	100.025.509
KEGG	D10799 Y
PubChem CID	6324599
CompTox Dashboard (EPA)	DTXSID80910613
SMILES CCN(CC1=CC(=CC=C1)S(=O)(=O)O)C2=CC(=C(C=C2)/C(=C\3/C=CC(=[N+](CC)CC4=CC(=CC=C4)S(=O)(=O)O)C=C3C)/C5=CC=C(C=C5)NC6=CC=C(C=C6)OCC)C
Properties
Chemical formula	C47H50N3NaO7S2 (Sodium salt)
Molar mass	856.03 g/mol
Solubility in water	Slightly soluble in cold, soluble in hot (bright blue)
Solubility in ethanol	Soluble
Pharmacology
Legal status	CA: ℞-only[1]
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Coomassie brilliant blue is the name of two similar triphenylmethane dyes that were developed for use in the textile industry but are now commonly used for staining proteins in analytical biochemistry. Coomassie brilliant blue G-250 differs from Coomassie brilliant blue R-250 by the addition of two methyl groups. The name "Coomassie" is a registered trademark of Imperial Chemical Industries.