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