

5-bromo-4-chloro-3-indoxyl-α-D-glucopyranoside by Molecular Depot is a known as X-α-D-glucoside, a white to off-white microcrystalline chromogenic substrate for α-D-glucosidase. Cleavage releases an indoxyl that oxidises and dimerises in air to an insoluble blue indigo dye, which stays where it was formed instead of diffusing away. It is used as a chromogenic substrate in α-glucosidase detection on plates and in gels, in microbial identification media and in histochemical staining. Each unit contains 25 mg. MBP supplies Molecular Depot carbohydrate reagents to research labs in the United States, Canada and worldwide.