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