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