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