3-Cyano-4-fluoro-5-(trifluoromethoxy)pyridine-2-carbonyl chloride
2-Chloro-6-nitro-3-(trifluoromethoxy)pyridine-5-carbonyl chloride
3-Cyano-4-fluoro-2-(trifluoromethoxy)pyridine-5-carbonyl chloride
6-Chloro-3-nitro-4-(trifluoromethoxy)pyridine-2-carbonyl chloride