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