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