

4-Nitrophenyl-α-L-arabinofuranoside by Molecular Depot is a 4-nitrophenyl-α-L-arabinofuranoside, a colorimetric substrate for the measurement of α-L-arabinofuranosidase activity. Hydrolysis of the glycosidic bond releases 4-nitrophenol, which is yellow in alkali and is read at 405 to 410 nm after the reaction is stopped with base. It is used to measure α-L-arabinofuranosidase activity, in plant cell wall enzyme characterisation and in carbohydrate enzyme assays. Each unit contains 25 mg. MBP supplies Molecular Depot carbohydrate reagents to research labs in the United States, Canada and worldwide.