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