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