

Lapis-Phos PT (Highly Pure) by Molecular Depot is a Lapis-Phos PT, an off-white crystalline powder, a chromogenic alkaline phosphatase substrate that yields a blue precipitate. An indolyl phosphate is cleaved by the phosphatase to an indoxyl, which oxidises and dimerises into an insoluble indigo dye at the site of the activity. It is used to visualise alkaline phosphatase activity in histochemical and blot staining, in reporter gene assays and in enzyme localisation. Each unit contains 100 mg. MBP supplies Molecular Depot research reagents to research labs in the United States, Canada and worldwide.