2-?(3-?Hydroxy-?6-?methoxy-?9H-?xanthen-?9-?yl)?benzoic Acid Methyl Ester is an intermediate in the synthesis of 3-O-Methylfluorescein Phosphate Bis-Cyclohexylammonium Salt (M227495), which is used in fluorimetric studies. It can be used as reactant in multifunctional phosphate-?based inorganic-?organic hybrid nanoparticles.