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