Xylene cyanol | |
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Other names
Acid Blue 147 |
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Identifiers | |
CAS number | 2650-17-1 |
ChemSpider | 21106494 |
Jmol-3D images | Image 1 |
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Properties | |
Molecular formula | C25H27N2NaO6S2 |
Molar mass | 538.61 g/mol |
(verify) (what is: / ?) Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) |
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Infobox references |
Xylene cyanol can be used as a colour marker to monitor the process of agarose gel electrophoresis and polyacrylamide gel electrophoresis. Bromophenol blue and orange G can also be used for this purpose.
In 1% agarose gels, Xylene cyanol typically migrates at about the same rate as a 4000 base pair DNA fragment. Xylene cyanol or tracking dye on a 6% polyacrylamide gel migrates at the speed of a 140 base pair DNA fragment. On 20% denaturating (7 M UREA) polyacrylamide PAGE gel electrophoresis Xylene cyanol migrates at about rate of 25 base oligonucleotide. Typically 0.005-0.03% of final concentration of Xylene cyanol is used.