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