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