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