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