Methyl 2-fluoro-5-hydroxy-3-(trifluoromethoxy)pyridine-4-carboxylate
Methyl 2-fluoro-4-hydroxy-3-(trifluoromethoxy)pyridine-5-carboxylate
3-Fluoro-6-hydroxy-4-(trifluoromethoxy)pyridine-2-carboxylic acid
5-Fluoro-2-hydroxy-3-(trifluoromethoxy)pyridine-4-carboxylic acid