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