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