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