Ponceau S

Molecular Formula: C₂₂H₁₂N₄O₁₃S₄Na₄
Catalog Number: PO145
Supplier/Brand: Spectrum Chemical
CAS Number: 6226-79-5

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Ponceau S, also known as Acid Red 112 or C.I. 27195, is a sodium salt of a diazo dye used to prepare a stain for rapid reversible detection of protein bands on cellulose acetate membranes. Ungraded products supplied by Spectrum are indicative of a grade suitable for general industrial use or research purposes and typically are not suitable for human consumption or therapeutic use.

Synonyms: Acid Red 112

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Ponceau S

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