6-Hydroxy-4-nitro-3-(trifluoromethoxy)pyridine-2-carbonyl chloride
2-Fluoro-6-nitro-3-(trifluoromethoxy)pyridine-5-carboxaldehyde
2-Hydroxy-4-nitro-3-(trifluoromethoxy)pyridine-5-carbonyl chloride
6-Fluoro-3-nitro-2-(trifluoromethoxy)pyridine-4-carboxaldehyde