Ethyl 4-amino-2-bromo-3-(trifluoromethoxy)pyridine-6-carboxylate
Methyl 3-amino-4-fluoro-2-(trifluoromethoxy)pyridine-6-carboxylate
Methyl 3-amino-2-fluoro-6-(trifluoromethoxy)pyridine-4-carboxylate
Methyl 3-amino-2-fluoro-4-(trifluoromethoxy)pyridine-6-carboxylate