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