

4-Nitrophenyl-α-D- maltopyranoside by Molecular Depot is a 4-nitrophenyl-α-D-maltopyranoside, a chromogenic substrate that gives a yellow solution on cleavage. The nitrophenol released on cleavage absorbs strongly at around 405 nm in alkali, so the reaction is followed directly in a spectrophotometer or a plate reader. It is used as a substrate in colorimetric α-glucosidase and amylase assays, in carbohydrase activity screening and in enzyme assay development. Each unit contains 25 mg. MBP supplies Molecular Depot carbohydrate reagents to research labs in the United States, Canada and worldwide.