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