

4-Nitrophenyl-β-D-mannopyranoside by Molecular Depot is a 4-nitrophenyl-β-D-mannopyranoside, a chromogenic substrate for β-mannosidase that gives a yellow solution on cleavage. The nitrophenol released on cleavage absorbs strongly at about 405 nm in alkali, so the reaction is read directly in a spectrophotometer or a plate reader. It is used as the substrate in colorimetric β-mannosidase assays, in glycosidase screening and lysosomal enzyme measurement and in enzyme assay development. Each unit contains 10 mg. MBP supplies Molecular Depot carbohydrate reagents to research labs in the United States, Canada and worldwide.