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