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