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