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