

p-Nitrophenyl alpha-L-arabinopyranoside by Molecular Depot is a 4-nitrophenyl alpha-L-arabinopyranoside, a chromogenic substrate for alpha-L-arabinofuranosidase and arabinosidase activity. Cleavage releases 4-nitrophenol, which is colourless at neutral pH and yellow once alkali is added, so the assay is stopped and read in one step. It is used as a substrate in arabinosidase assays, in plant cell wall and hemicellulose degradation research and in enzyme assay development. Each unit contains 50 mg. MBP supplies Molecular Depot carbohydrate reagents to research labs in the United States, Canada and worldwide.