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