4-Fluoro-5-hydroxy-2-(trifluoromethoxy)pyridine-3-carboxylic acid
2-(Bromomethyl)-5-fluoro-4-hydroxy-3-(trifluoromethoxy)pyridine
4-Fluoro-3-hydroxy-5-(trifluoromethoxy)pyridine-2-carboxylic acid
3-Hydroxy-2-methoxy-5-methyl-4-(trifluoromethoxy)pyridine