The title compound, C12H12O2, lies across an inversion centre.The molecular structure suggests that the methoxy groups in Power Entry Module the 1- and 5-positions of the naphthalene moiety do not significantly distort the planar conformation of the ring system, which has a maximum deviation of 0.0025 (9) Å.In MSM Powder the crystal, molecules pack in a herringbone arrangement in layers parallel to (100) and with chains propagating along [101] formed by very weak C—H.O interactions.