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