3-Hydroxy-6-methyl-2-(trifluoromethoxy)pyridine-5-carboxylic acid
5-Hydroxy-2-nitro-3-(trifluoromethoxy)pyridine-4-sulfonamide
5-Fluoro-2-(trifluoromethoxy)-3-(trifluoromethyl)pyridine-4-methanol
4-Hydroxy-5-nitro-3-(trifluoromethoxy)pyridine-2-sulfonamide