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