4-Methylumbelliferyl α-L-fucopyranoside

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