Product Code Pack Size Sterling Euros Dollars      31039  250mg  £105  €165  $215   5-Bromo-6-chloro-3-indolyl α-D-galactopyranoside 5-Bromo-6-chloro-3-indoxyl alpha-D-galactopyranoside; 5-Bromo-6-chloro-3-indoxyl alpha-D-galactoside CAS: 198402-60-7 MF: C14H15BrClNO6 MW: 408.60 >97% [HPLC]   Chromogenic substrate producing an insoluble magenta colour; an alternative to X-α-gal.