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