Methyl 3-chloro-6-nitro-4-(trifluoromethoxy)pyridine-2-acetate
Methyl 2-(aminomethyl)-3-chloro-4-(trifluoromethoxy)pyridine-5-acetate
Methyl 3-chloro-6-nitro-2-(trifluoromethoxy)pyridine-5-acetate
Methyl 5-chloro-2-nitro-3-(trifluoromethoxy)pyridine-6-acetate