indoxyl

5-Bromo-4-chloro-3-indoxyl-beta-D-cellobioside is a chromogenic compound used to detect cellobiohydrolases.

6-Chloro-3-indoxyl-α-D-mannopyranoside serves as a chromogenic substrate for the enzyme α-mannosidase, generating a salmon-colored precipitate upon enzymatic cleavage.

3-Indoxyl caprylate is a chemiluminescent substrate utilized for the detection of bacterial activity and is used in conjunction with appropriate enzymes.

Purple-β-D-Gal, a chromogenic β-galactosidase substrate, undergoes enzymatic hydrolysis by intracellular β-galactosidase, yielding indoxyl molecules that oxidize and dimerize in situ to form water-insoluble indigo precipitates advantageous for β-galactosidase activity detection [1].