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