Congo Red

(HB0737)

Product overview

  • Name
    Congo Red
  • Short description
    Acid dye that binds to amyloid proteins
  • Alternative names
    Congo Red 4B; Cosmos Red; Cotton Red B; Cotton Red C; Direct Red 28; Direct Red R; Direct Red Y
  • Biological description
    Acid dye that binds to amyloid proteins. Displays colour changes at different pHs (pH 3.0- Blue, pH 5.0- Red). Demonstrates the presence of amyloidosis. Affects growth and metabolic activity in photosynthetic organisms.
  • Biological action
    Dyes & stains
  • Citations

Properties

  • Chemical name
    Congo Red 4B; Cosmos Red; Cotton Red B; Cotton Red C; Direct Red 28; Direct Red R; Direct Red Y
  • Molecular Weight
    696.7
  • Chemical structure
    Congo Red  [573-58-0]
  • Molecular Formula
    C32H22N6O6S2.2Na
  • CAS Number
    573-58-0
  • PubChem identifier
    http://pubchem.ncbi.nlm.nih.gov/summary/summary.cgi?cid=11313
  • SMILES
    C1=CC=C2C(=C1)C(=CC(=C2N)N=NC3=CC=C(C=C3)C4=CC=C(C=C4)N=NC5=C(C6=CC=CC=C6C(=C5)S(=O)(=O)[O-])N)S(=O)(=O)[O-].[Na+].[Na+]

Storing and Using Your Product

  • Storage instructions
    room temperature
  • Solubility overview
    soluble in EtOH or water
  • Important
    This product is for RESEARCH USE ONLY and is not intended for therapeutic or diagnostic use. Not for human or veterinary use.

References for Congo Red

  • Congo' red: out of Africa?

    Steensma DP (2001) Arch Pathol Lab Med 125(2) : 250-2.
    PubMedID: 11175644
  • Physiological and biochemical responses of Chlorella vulgaris to Congo red.

    Hernández-Zamora M et al (2014) Ecotoxicol Environ Saf 108 : 72-7.
    PubMedID: 25042247
  • An evaluation of Congo red fluorescence for the diagnosis of amyloidosis.

    Clement CG et al (2014) Hum Pathol 45(8) : 1766-72.
    PubMedID: 24935061

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