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