5-Bromo-4-chloro-3-indoxyl-beta-D-mannopyranoside is a chromogenic substrate.

X-α-D-Glucoside is a white to off-white microcrystalline powder that is used as a chromogenic substrate for α-D-glucosidase, which yields a blue precipitate. It is used for the detection of Staphylococcus aureus and species within Bacilli. It is also used in the isolation of Enterobacter sakazakii.

X-β-D-Xyloside is a white to off-white crystalline powder that is used as a chromogenic substrate for β-D-xylosidase, yielding a blue precipitate when cleaved.

5-Bromo-4-chloro-3-indolyl α-D-galactopyranoside is a substrate used in the differentiation of alpha-galactosidase enzyme. This is used to differentiate the presence of the galactosidase enzyme in yeasts, and bacteria species Bifido from Lactobacillus in the Enterobacteriaceae family.

6-Bromo-2-naphthyl-alpha-D-mannopyranoside is a substrate for alpha-mannosidase. By binding with a staining reagent a red-brown dye is formed.

6-Chloro-3-indoxyl caprylate is a substrate for esterase exhibiting C8 activity, and yields a pink precipitate.

6-Chloro-3-indoxyl-alpha-D-glucopyranoside is a chromogenic substrate for alpha-glucosidase yielding a salmon-colored precipitate.

6-Chloro-3-indoxyl-alpha-D-mannopyranoside is a chromogenic substrate for α-mannosidase, which yields a salmon colored precipitate upon cleavage.