Crosol red
| Formula: | C21H18O5S |
| Molar mass: | 382.44 g/mol |
| CAS number: | 1733-12-6 |
| HS code: | 29349990 |
| EC number: | 217-067-2 |
| Storage: | 15°C to + 30°C |
| SDS | available |
| Description | Conforms | ||
| Identification | Conforms | ||
| loss on drying(110.0) °C | ≤ | 5.0 | % |
| Appearance of solution | Conforms | ||
| Appearance Range1 | Conforms | ||
| Appearance Range2 | Conforms | ||
| Sensitivity | Conforms |
Cresol red is a triarylmethane dye frequently used for monitoring the pH in aquaria.
🧪 Application
Cresol Red is a widely used pH indicator for routine pH assessments like microbial culture media preparations. In addition, Cresol red is a suitable constituent of PCR reagent systems. Cresol Red is used as a tracking dye in DNA, RNA (agarose), and protein (polyacrylamide) electrophoresis.
Molecular biology
Cresol red can be used in many common molecular biology reactions in place of other loading dyes. Cresol Red does not inhibit Taq polymerase to the same degree as other common loading dyes.
Color marker
Cresol red can also be used as an electrophoretic color marker to monitor the process of agarose gel electrophoresis and polyacrylamide gel electrophoresis. In a 1% agarose gel, it runs approximately at the size of a 125 base pair (bp) DNA molecule (it depends on the concentration of buffer and other component). Bromophenol blue and xylene cyanol can also be used for this purpose.
