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