4-Methylumbelliferyl alpha-L-fucopyranoside

4-Methylumbelliferyl-alpha-L-fucopyranoside is a non-fluorescent but fluorogenic substrate for alpha-L-fucosidase (FUCA1) yielding a blue fluorescent solution. It is a fluorogenic MU substrate for detecting alpha-L-fucosidase in cell extracts and purified enzyme preparations using a fluorescence microplate reader or fluorometer. Hydrolysis of 4-Methylumbelliferyl-alpha-L-fucopyranoside releases the fluorescent product 4-MU. Spectral Data. lambdaEx/lambdaEm= 360/450 nm (cleaved product, pH-dependent).