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