| Alternate Names | o-Cresolsulfonphthalein |
| Application | Cresol red is a stain commonly used with lead acetate for detection of urease after PAGE |
| CAS Number | 1733-12-6 |
| Molecular Weight | 382.43 |
| Molecular Formula | C21H18O5S |
For Research Use Only. Not Intended for Diagnostic or Therapeutic Use.
* Refer to Certificate of Analysis for lot specific data (including water content).
Cresol red is commonly used with lead acetate for the detection of urease after PAGE. It is also used as an indicator with the following transition intervals: pH 1.8 (orange) to pH 2.0 (yellow); pH 7.0 (yellow) to pH 8.8 (violet).
TECHNICAL INFORMATION
| Appearance | Powder |
| Physical State | Solid |
| Solubility | Soluble in water (slightly at 20° C), 50% ethanol (0.1%), dil. acids, and dil. alkalies. Insoluble in benzene. |
| Storage | Store at room temperature |
| Refractive Index | n20D 1.67 (Predicted) |
| pK Values | pKa: 9.39 |
SAFETY INFORMATION
For Research Use Only. Not Intended for Diagnostic or Therapeutic Use.
| WGK Germany | 3 |
| PubChem CID | 73013 |
| Merck Index | 14:2578 |
| MDL Number | MFCD00005878 |
| EC Number | 217-064-2 |
| Beilstein Registry | 343399 |
| SMILES | CC1=C(C=CC(=C1)C2(C3=CC=CC= C3S(=O)(=O)O2)C4=CC(=C(C=C4)O)C)O |