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