[A17243] CAS 1733-12-6 | Cresol Red | Alfa
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Brand: Alfa Aesar
1733-12-6 | C21H18O5S | cresol red
Chemical Identifiers
CAS
1733-12-6
Molecular Weight (g/mol)
382.43
Synonym
cresol red
SMILES
CC1=CC(=CC=C1O)C1(OS(=O)(=O)C2=CC=CC=C12)C1=CC=C(O)C(C)=C1
InChI Key
OBRMNDMBJQTZHV-UHFFFAOYSA-N
Molecular Formula
C21H18O5S
IUPAC Name
3,3-bis(4-hydroxy-3-methylphenyl)-3H-2,1λ⁶-benzoxathiole-1,1-dione
Specifications
Appearance (Color)
Dark green or red-brown or dark brown
Form
Powder
Color Change
pH 0.2-1.8: orange to yellow
Color Change
pH 7.0-8.8: yellow to red/purple
Loss on Drying
≤3% (105°C, constant weight)
설명
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). Cresol Red is used as a tracking dye in DNA, RNA (agarose) and protein (polyacrylamide) electrophoresis. In agarose, Cresol Red runs with an apparent molecular size of approx. 125 bp DNA. Cresol Red does not inhibit Taq polymerase.
This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Scientific Chemicals.
Applications
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). Cresol Red is used as a tracking dye in DNA, RNA (agarose) and protein (polyacrylamide) electrophoresis. In agarose, Cresol Red runs with an apparent molecular size of approx. 125 bp DNA. Cresol Red does not inhibit Taq polymerase.
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). Cresol Red is used as a tracking dye in DNA, RNA (agarose) and protein (polyacrylamide) electrophoresis. In agarose, Cresol Red runs with an apparent molecular size of approx. 125 bp DNA. Cresol Red does not inhibit Taq polymerase.
Solubility
Soluble in water (slightly at 20°C), 50% ethanol (0.1%), dil. acids, and dil. alkalis. Insoluble in benzene.
Notes
Transition interval (acid): pH 1.8 (orange) to pH 2.0 (yellow); (alkaline) pH 7.0 (yellow) to pH 8.8 (violet)
Other References:
Merck Index:14,2578Beilstein:343399
GHS Hazard and Precautionary Statements
Hazard Statements:Warning
GHS H StatementH315-H319-H335Causes skin irritation.Causes serious eye irritation.May cause respiratory irritation.
Precautionary Statements:GHS P Statement
P261-P280-P305+P351+P338-P304+P340-P405-P501a
Avoid breathing dust/fume/gas/mist/vapors/spray.
Wear protective gloves/protective clothing/eye protection/face protection.
IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
IF INHALED: Remove to fresh air and keep at rest in a position comfortable for breathing.
Store locked up.
Dispose of contents/container in accordance with local/regional/national/international regulations.
P261-P280-P305+P351+P338-P304+P340-P405-P501a
Avoid breathing dust/fume/gas/mist/vapors/spray.
Wear protective gloves/protective clothing/eye protection/face protection.
IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
IF INHALED: Remove to fresh air and keep at rest in a position comfortable for breathing.
Store locked up.
Dispose of contents/container in accordance with local/regional/national/international regulations.
Risk & Safety
TSCA:Yes
경고:RUO – Research Use Only
CAS1733-12-6FORMULAC21H18O5SEINECS217-064-2MDLMFCD00005878
| Pakage | 100g, 25g |
|---|---|
| brand | Alfa Aesar |
