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