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The title compound, C7H2ClF3O2, was prepared by the chlorination of 3-amino-2,4,5-trifluoro­benzoic acid. The carboxyl group is twisted relative to the benzene ring by 6.8 (1)°. In the crystal, pairs of O—H...O hydrogen bonds link mol­ecules into typical centrosymmetric carb­oxy­lic acid dimers. These dimers are arranged into sheets parallel to (-103).
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