Ponceau S, Bioreagenzien für die Elektrophorese, Sigma-Aldrich®

Lieferant: SIGMA-ALDRICH MICROSCOPY
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M-Clarity™ Qualitätsstufe = MQ200

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Ponceau S, Bioreagenzien für die Elektrophorese, Sigma-Aldrich®
Ponceau S

Ponceau S is the sodium salt of a diazo dye. It is used to make a stain for rapid reversible staining of protein bands on nitrocellulose or PVDF membranes (Western blots) and also for staining protein on cellulose acetate membranes. The stain is reversed with water washes and aids in subsequent immunological detection. The following are two common stain formulations: 0.1% Ponceau S (w/v) in 5% acetic acid 2% Ponceau S (w/v) in 30% TCA, 30% sulfosalicylic acid.


  • Ponceau S has been used for membrane staining (Western blotting)

Formel: C₂₂H₁₂N₄Na₄O₁₃S₄
Molecular Weight: 760,56 g/mol
Lagertemperatur: Room Temperature
MDL: MFCD00003892
CAS-Nummer: 6226-79-5
EINECS: 228-319-2
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Spezifikation Testergebnisse

Infrared spectrum Conforms to Structure
Solubility (Turbidity) Clear
Solubility (Colour)
c = 4mg/4ml; Water
Red to Very Dark Red
Suitability
Suitable for Use as a Stain in Electrophoresis
Suitable
Wavelength
C = 0.015 G/L, Di water
518 - 522 nm
Extinction Coefficient ≥33000

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