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