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