6-Fluoro-2-hydroxy-4-(2,3,4-trichlorophenyl)pyridine
5-Fluoro-2-hydroxy-4-(3,4,5-trichlorophenyl)pyridine
5-Fluoro-2-hydroxy-4-(2,4,6-trichlorophenyl)pyridine
5-Fluoro-2-hydroxy-4-(2,3,4-trichlorophenyl)pyridine
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