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