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