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