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