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