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