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