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