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