
5-bromo-3-indoxyl-1,3-diacetate by Molecular Depot is a 5-bromo-3-indoxyl-1,3-diacetate, a chromogenic esterase substrate acetylated on both the nitrogen and the oxygen. Acetylating both positions makes the molecule more stable and less soluble in water than a simple indoxyl ester, and both groups have to be removed before the indoxyl can oxidise to the blue dye. It is used to detect esterase activity in microbial identification media and in histochemical staining and as a general viability stain. Each unit contains 5 g. MBP supplies Molecular Depot research reagents to research labs in the United States, Canada and worldwide.