4-Methylumbelliferyl-β-D-galactopyranoside 6-sulfate
4-Methylumbelliferyl-β-D-galactopyranoside 6-sulfate is a fluorescent dye. 4-Methylumbelliferyl-β-D-galactopyranoside 6-sulfate can be used in the diagnosis of mucopolysaccharidosis IV A by detecting activity of galactose-6-sulphate sulphatase.