4-Methylumbelliferyl 2,3,4-Tri-O-acetyl-α-L-idopyranosiduronic Acid, Methyl Ester (CAS 128095-50-1)

4-Methylumbelliferyl 2,3,4-tri-O-acetyl-α-L-idopyranosiduronic acid, methyl ester is a synthetic compound commonly utilized in biochemical research to investigate the enzymatic activity of glycosidases, particularly those involved in carbohydrate metabolism. This compound consists of a 4-methylumbelliferyl (4-MU) fluorophore attached to a uronic acid moiety, which is acetylated at the 2nd, 3rd, and 4th positions and esterified with a methyl group. The presence of the 4-MU fluorophore allows for the detection of enzymatic activity via fluorescence spectroscopy upon substrate hydrolysis. Glycosidases capable of cleaving the glycosidic bond between the uronic acid and the 4-MU group lead to an increase in fluorescence intensity, providing a sensitive and quantitative measure of enzyme activity. In research, this compound serves as a valuable tool for studying the kinetics, substrate specificity, and inhibition of various glycosidases, including hydrolases, glucuronidases, and galactosidases. Additionally, it finds application in high-throughput screening assays for identifying potential enzyme inhibitors or activators, contributing to the development of novel strategies targeting glycoside hydrolases implicated in diseases such as lysosomal storage disorders and microbial infections. Furthermore, this substrate facilitates the elucidation of glycosidase-mediated pathways and their roles in biological processes, offering insights into carbohydrate metabolism and cellular physiology.