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