Product Code Pack Size Sterling Euros Dollars      44099  1g  £100  €157  $205   bis-(4-Methylumbelliferyl) phosphate bis-(4MU) phosphate; bis-MUP CAS: 51379-07-8 MF: C20H15O8P MW: 414.30 TLC single spot. Free 4MU < 100ppm. Fluorimetric substrate for phosphodiesterase activity in Niemann-Pick disease: G.T.N. Besley, Clin. Chim. Acta, 90, 269 (1978). G.T.N. Besley and S.E. Moss, Biochem. Biophys. Acta, 752, 54 (1983). Reference Material in Soil Phosphorous Composition