5,6,7-Trichloro-2-methoxy-8-hydroxyquinoline

In the title compound, C10H6Cl3NO2, a mean plane fitted through all non-H atoms has an r.m.s. deviation of 0.035 . In the crystal, adjacent molecules are connected by O—H...O hydrogen bonds and π–π stacking interactions [centroid–centroid distance = 3.650 (1) ], resulting in an infinite chain which propagates in the b-axis direction.