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