Cresol Red

Cresol Red
Cresol Red
Identifiers
CAS number 1733-12-6
PubChem 73013
ChemSpider 65818 YesY
Jmol-3D images Image 1
Image 2
Properties
Molecular formula C21H17NaO5S
Molar mass 404.41 g/mol
 YesY (verify) (what is: YesY/N?)
Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)
Infobox references

Cresol Red (full name: o-Cresolsulfonephthalein) is a triarylmethane dye frequently used for monitoring the pH in aquaria.

Contents

pH indicator

Cresol Red (pH indicator)
below pH 7.2 above pH 8.8
7.2 8.8







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 a 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.

References


External links


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Look at other dictionaries:

  • cresol red — An acid base indicator with a pK value of 8.3; yellow at pH values below 7.4, red above 9.0. * * * an indicator, ortho cresol sulfonphthalein, used in the determination of the hydrogen ion concentration. It has a pH range of 7.2 to 8.8, being… …   Medical dictionary

  • cresol red — noun : a dye C21H18O5S of the sulfonephthalein series derived from ortho cresol that is obtained as a reddish brown crystalline powder and is used as an acid base indicator …   Useful english dictionary

  • red — Synonyms and related words: Adrianople red, Amytal, Amytal pill, Bolshevik, Bolshevist, Bolshie, Burgundy, Carbonarist, Carbonaro, Castroist, Castroite, Charley, Communist, Cong, Congo rubine, Demerol, Dolophine, English red, Fenian, Goya,… …   Moby Thesaurus

  • Cresol — Cresols are organic compounds which are methylphenols. They are a widely occurring natural and manufactured group of aromatic organic compounds which are categorized as phenols (sometimes called phenolics). Depending on the temperature, cresols… …   Wikipedia

  • O-Cresol — Chembox new Name = o cresol ImageFile = O Kresol.svg ImageSize = 120px ImageName = o cresol ImageFile1 = Ortho cresol 3D vdW.png ImageSize1 = 150px ImageName1 = 3D model of o cresol OtherNames = 2 Hydroxytoluene ortho cresol IUPACName = 2… …   Wikipedia

  • o-Cresol — Systematic name …   Wikipedia

  • Kresolrot — Strukturformel Allgemeines Name Kresolrot Andere Namen …   Deutsch Wikipedia

  • O-Kresolsulfonphthalein — Strukturformel Allgemeines Name Kresolrot Andere Namen o Kresolsulfonphthalein 4 [3 (4 hydroxy 3 methylphenyl) …   Deutsch Wikipedia

  • color — Synonyms and related words: Adrianople red, Alice blue, Arabian red, Argos brown, Bordeaux, Brunswick black, Brunswick blue, Burgundy, Capri blue, Cassel yellow, Chinese blue, Chinese white, Claude tint, Cologne brown, Columbian red, Congo rubine …   Moby Thesaurus

  • pH indicator — Acids and Bases Acid dissociation constant Acid base extraction Acid–base reaction Acid–base titration Dissociation constant Acidity function Buffer sol …   Wikipedia

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