Description
 X-β-D-glucuronide sodium salt is a substrate for β-glucuronidase (GUS),   yielding a blue precipitate upon cleavage. X-β-D-glucuronide sodium salt  is highly accepted as an accurate test for the presence of E. coli in water. X-β-D-glucuronide sodium salt is nonelectrostatic and  possesses a naturally occurring cation; therefore, it has advantages  over X-β-D-glucuronide cyclohexylammonium salt. 
  Product Specifications: 
 5-Bromo-4-chloro-3-indoxyl-β-D-glucuronic acid sodium salt; 
 X-β-D-GlcA · Na;
 X-β-D-glucuronide sodium salt 
  Formula: C14H12BrClNNaO7 
  MW: 444.59 g/mol 
  Storage/Handling: Store at -20°C. Protect from light. 
  PubChem Chemical ID: 24801970