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