Ethyl 2-amino-3-hydroxy-4-(trifluoromethoxy)pyridine-6-carboxylate
Ethyl 4-amino-6-bromo-2-(trifluoromethoxy)pyridine-3-carboxylate
Methyl 3-amino-6-hydroxy-2-(trifluoromethoxy)pyridine-5-carboxylate
Ethyl 4-amino-2-bromo-5-(trifluoromethoxy)pyridine-3-carboxylate