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