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