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