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