Ponceau S solution

Supplier: Rockland Immunochemical

Synonyms: CI 271953-Hydroxy-4-((2-sulpho-4-((4-sulphophenyl)diazenyl)phenyl)diazenyl)naphthalene-2,7-disulphonic acid, tetrasodium salt3-Hydroxy-4-(2-sulpho-4-[4-sulphophenylazo]phenylazo)-2,7-naphthalenedisulphonic acid sodium saltPonceau3-Hydroxy-4-(2-sulfo-4-[4-sulfophenylazo]phenylazo)-2,7-naphthalenedisulfonic acid sodium salt3-Hydroxy-4-((2-sulfo-4-((4-sulfophenyl)diazenyl)phenyl)diazenyl)naphthalene-2,7-disulfonic acid, tetrasodium salt

MB-072-0500
76236-520EA 96 USD
76236-520
Ponceau S solution
Ponceau S

Ponceau S solution


  • LOD of stain is 200ng of protein after SDS and transferred to nitrocellulose or PVDF membranes
  • Ready-to-Use
  • binds rapidly and reversibly
  • detected as red protein bands with a clear background


Ponceau S Staining Solution is made using Ponceau S. Ponceau S is a sodium salt used for the detection of proteins on PVDF, and nitrocellulose membranes. Staining of blot transfer membranes permits visualization of proteins and allows the extent of transfer to be monitored. Ponceau S binds rapidly and reversibly to the positively charged amino groups and binds non-covalently to non-polar regions in the protein. Ponceau S stain is designed for rapid (5 min) staining on nitrocellulose or PVDF membranes and also for staining protein on cellulose acetate membranes. Microgram quantities of transferred protein will be detected as red protein bands with a clear background. Ponceau S staining on nitrocellulose and PVDF is reversible by washing the stained membrane with dH2O or blocking buffer, this allows further immunological detection.


Store at room temperature. The product is at working concentration, no further dilution is necessary. The limit of detection for this stain is 200 nanograms of protein after separation by electrophoresis in polyacrylamide gels and transferred to nitrocellulose or PVDF membranes. Ponceau S is not suitable for use with nylon membranes.

Formula: C₂₂H₁₂N₄Na₄O₁₃S₄
MW: 760.56 g/mol
Storage Temperature: Ambient
MDL Number: MFCD00003892
CAS Number: 6226-79-5

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