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