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