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