Methyl 3-chloro-6-cyano-4-(trifluoromethoxy)pyridine-2-acetate
Methyl 5-chloro-2-cyano-3-(trifluoromethoxy)pyridine-6-acetate
Methyl 5-chloro-4-cyano-2-(trifluoromethoxy)pyridine-3-acetate
Methyl 4-chloro-5-cyano-2-(trifluoromethoxy)pyridine-3-acetate