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Thermo Scientific Chemicals Cresol Red

£31.66 - £96.88

Chemical Identifiers

CAS 1733-12-6
Molecular Formula C21H18O5S
Molecular Weight (g/mol) 382.43
MDL Number MFCD00005878
InChI Key OBRMNDMBJQTZHV-UHFFFAOYSA-N
Synonym o-Cresolsulfonephthalein
PubChem CID 73013
ChEBI CHEBI:86218
IUPAC Name 4-[3-(4-hydroxy-3-methylphenyl)-1,1-dioxo-2,1$l^{6}-benzoxathiol-3-yl]-2-methylphenol
SMILES CC1=CC(=CC=C1O)C1(OS(=O)(=O)C2=CC=CC=C12)C1=CC=C(O)C(C)=C1
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Description

Description

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.

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)
Specifications
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Safety and Handling

Safety and Handling

GHS H Statement
H315-H319-H335
Causes skin irritation.
Causes serious eye irritation.
May cause respiratory irritation.

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.

Warning

missing translation for 'einecsNumber' : 217-064-2

missing translation for 'tsca' : Yes

Recommended Storage : Ambient temperatures

SDS
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Product Certifications

RUO – Research Use Only

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