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