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