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Product overview

  • Name
  • Short description
    Chromogenic β-galactosidase substrate
  • Biological description
    Molecular biology reagent. Chromogenic substrate for β-galactosidase. Used in gene cloning together with IPTG to indicate whether a cell expresses the beta-galactosidase enzyme, which is encoded by the lacZ gene, in a technique called blue/white screening. Distinguishes between recombinant and non-recombinant plasmids carrying the beta-galactosidase gene. Used in two-hybrid analysis. X-Gal is used to determine E. coli and coliform content in drinking water samples.
  • Purity
  • Citations


  • Molecular Weight
  • Chemical structure
    X-Gal [7240-90-6]
  • Molecular Formula
  • CAS Number
  • InChiKey
  • Appearance
    White to off-white powder. Clear, colourless to light yellow in solution

Storing and Using Your Product

  • Storage instructions
  • Important
    This product is for RESEARCH USE ONLY and is not intended for therapeutic or diagnostic use. Not for human or veterinary use.
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