5-bromo-4-chloro-3-indoxyl Butyrate

5-bromo-4-chloro-3-indoxyl Butyrate by Molecular Depot is a 5-bromo-4-chloro-3-indoxyl butyrate, a chromogenic substrate for carboxylesterase that yields a blue precipitate on cleavage. The released indoxyl oxidises and dimerises in air to an insoluble indigo dye, so the colour forms as a precipitate where the enzyme is rather than diffusing into the medium. It is used to detect carboxylesterase on agar plates and in gels, in microbial identification media and esterase localisation and in histochemical staining. Each unit contains 500 mg. MBP supplies Molecular Depot research reagents to research labs in the United States, Canada and worldwide.