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