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