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