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