3-Fluoro-2-methyl-5-(trifluoromethoxy)pyridine-6-carboxylic acid
4-Fluoro-6-(fluoromethyl)-3-hydroxy-2-(trifluoromethoxy)pyridine
3-Fluoro-2-methyl-4-(trifluoromethoxy)pyridine-5-carboxylic acid
4-Fluoro-2-(fluoromethyl)-3-hydroxy-5-(trifluoromethoxy)pyridine