6-Fluoro-4-hydroxy-3-nitro-2-(trifluoromethoxy)pyridine
3-Fluoro-6-hydroxy-4-methyl-2-(trifluoromethoxy)pyridine
4-Fluoro-3-hydroxy-2-methyl-5-(trifluoromethoxy)pyridine
4-Fluoro-6-hydroxy-3-methyl-2-(trifluoromethoxy)pyridine
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