2,2′-Dimethyl-4,4′-(sulfonyldi-p-phenylene)dibut-3-yn-2-ol dihydrate

The asymmetric unit of the title compound, C22H22O4S·2H2O, contains one quarter of the organic molecule and one half water molecule, the site symmetries of the S atom and the water O atom being mm2 and m, respectively. The dihedral angle between the benzene rings is 76.27 (11)°. In the crystal structure, intermolecular O—H...O hydrogen bonds link the molecules into chains running parallel to the a axis.