Oligosaccharide derivatives and their use as substrate for measuring alpha -amylase activity

摘要

An oligosaccharide derivative having 4 to 7 glucose units wherein a primary alcohol moiety positioned at the 6-position of the non-reducing end glucose unit is replaced by <IMAGE> -CH2OCH2COOH, or the like group and the 1-position of the reducing end glucose unit is replaced by a phenoxy or substituted phenoxy group or an umbelliferyl group or an indoxyl group is particularly suitable as a substrate for measuring alpha -amylase activity.