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