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