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