The title compound, butyl 4-[(9-oxoxanthen-3-yl)carbonyloxy]benzoate,
C25H20O6, has been obtained as a product of the intramolecular cycliza
tion of 2-phenoxyterephthaloyl dichloride in the presence of butyl 4-h
ydroxybenzoate. The crystal and molecular structures are reported, The
xanthone group is planar to within 0.084 (1) Angstrom. Molecules in t
he crystal are packed with planes of xanthone groups parallel to one a
nother.