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