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