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.