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