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