2-Fluoro-5-(fluoromethyl)-4-nitro-3-(trifluoromethoxy)pyridine
5-(Bromomethyl)-4-fluoro-3-nitro-2-(trifluoromethoxy)pyridine
2-Fluoro-4-(fluoromethyl)-5-nitro-3-(trifluoromethoxy)pyridine
3-Hydroxy-4-nitro-6-(trifluoromethoxy)pyridine-2-carboxylic acid