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