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PONCEAU S

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PONCEAU S
Product Description: 

PONCEAU S excellent quality manufacturer, supplier and exporter. PONCEAU S is a sodium salt of a diazo dye of a light red color, that may be used to prepare a stain for rapid reversible detection of protein bands on nitrocellulose or polyvinylidene fluoride (PVDF) membranes (Western blotting), as well as on cellulose acetate membranes. It can be used to locate proteins or evaluate efficiency of transfer. Reversible staining with ponceau S has also been validated as an alternative to actin probing as a loading control. This stain can also be used as a fiducial marker in mass spectrometric imaging.

Product Technical Specification: 
C.A.S. No. 62276-79-5
CI NO. 27195
M.F. C22H12N4Na4O13S4
M.W. 760.58gm/mole

Specifications:

Dye Content (by Spectrophotometry) >75%
Solubility 0.1% (Dist. water) Clear solution
Absorption max. (Dist. water) ?max 517-523nm
Absorptivity (A1%/1cm in Dist. water, at ?max) 460-600
Loss on drying (110°C) >10%
Suitability for microscopy Passes test
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PONCEAU S