Methyl 3-amino-5-hydroxy-6-(trifluoromethoxy)pyridine-2-acetate
Methyl 3-amino-5-hydroxy-4-(trifluoromethoxy)pyridine-2-acetate
Methyl 6-amino-4-iodo-3-(trifluoromethoxy)pyridine-2-acetate
Methyl 3-amino-5-hydroxy-2-(trifluoromethoxy)pyridine-4-acetate