4-Methylumbelliferyl α-L-iduronide (free acid) (CAS 66966-09-4)

4-Methylumbelliferyl alpha-L-iduronide (free acid) is used in biochemical research as a fluorogenic substrate for assaying the activity of the enzyme alpha-L-iduronidase. This enzyme activity is for the degradation of glycosaminoglycans, specifically dermatan sulfate and heparan sulfate. In the context of research applications, 4-Methylumbelliferyl alpha-L-iduronide (free acid) is employed to measure enzyme kinetics as well as to screen for deficiencies in alpha-L-iduronidase activity, which is pertinent in the study of mucopolysaccharidosis type I (MPS I). Upon cleavage by the enzyme, the compound releases a fluorescent 4-methylumbelliferone moiety, which can be easily detected and quantified. This feature facilitates the monitoring of enzyme activity in various assay conditions and the investigation of factors that influence the activity of alpha-L-iduronidase. Moreover, the use of this substrate aids in the exploration of enzyme function in normal and pathological states, contributing to a deeper understanding of metabolic disorders involving lysosomal storage.