In my cart

You have no items in your shopping cart.


Product overview

  • Name
    Eosin Y
  • Short description
    Xanthene dye used to stain and quantify proteins.
  • Alternative names
    2?,4?,5?,7?-Tetrabromofluorescein; Acid Red 87; Bromo acid J. TS, XL, or XX; Bromofluorescein; Bronze Bromo ES; Eosin yellowish; Solvent red 43; C.I. 45380; bromoeosine; bromofluoresceic acid
  • Biological description
    Xanthene dye used to stain and quantify proteins. Acts as a photoelectrode by catalysing visible light driven electron transfer. Also a photoredox catalyst in many organic synthesis reactions. Changes from a non-fluorescent dye to a green fluorescent dye at a pH change from 0.0 to 3.0.
  • Biological action
    Dyes & stains
  • Purity
  • Citations


  • Chemical name
  • Molecular Weight
  • Chemical structure
    Eosin Y  [17372-87-1]
  • Molecular Formula
  • CAS Number
  • PubChem identifier

Storing and Using Your Product

  • Storage instructions
  • Solubility overview
    soluble in water (40mg/ml) or alcohol
  • 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 Eosin Y

  • Eosin Y-sensitized artificial photosynthesis by highly efficient visible-light-driven regeneration of nicotinamide cofactor.

    Lee SH et al (2009) Chembiochem 10(10) : 1621-4.
    PubMedID: 19551795
  • Synthetic applications of eosin Y in photoredox catalysis.

    Hari DP et al (2014) Chem Commun (Camb) 50(51) : 6688-99.
    PubMedID: 24699920
  • The role of energy transfer in bioluminescence quenching by xanthene dyes.

    Gerasimova MA et al (2009) J Photochem Photobiol B 97(3) : 117-22.
    PubMedID: 19864157
Support & Resources

Reviews & Product Guides