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