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