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