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