5-Cyano-4-iodo-3-(trifluoromethoxy)pyridine-2-carbonyl chloride
3-Cyano-4-iodo-2-(trifluoromethoxy)pyridine-6-carbonyl chloride
4-Cyano-5-methoxy-3-(trifluoromethoxy)pyridine-2-carbonyl chloride
4-Cyano-3-methoxy-2-(trifluoromethoxy)pyridine-6-carbonyl chloride