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