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