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