4-Cyano-2-fluoro-3-(trifluoromethoxy)pyridine-5-carbonyl chloride
3-Chloro-2-nitro-6-(trifluoromethoxy)pyridine-4-carbonyl chloride
3-Cyano-5-fluoro-6-(trifluoromethoxy)pyridine-2-carbonyl chloride
3-Chloro-2-nitro-5-(trifluoromethoxy)pyridine-4-carbonyl chloride