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