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