2-Cyano-3-iodo-4-(trifluoromethoxy)pyridine-5-carbonyl chloride
3-Cyano-2-methoxy-4-(trifluoromethoxy)pyridine-5-carbonyl chloride
5-Cyano-2-hydroxy-4-(trifluoromethoxy)pyridine-3-carbonyl chloride
6-Cyano-2-methoxy-3-(trifluoromethoxy)pyridine-4-carbonyl chloride