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