Methyl 3-bromo-2-nitro-4-(trifluoromethoxy)pyridine-6-carboxylate
2-Bromo-3-(chloromethyl)-6-nitro-4-(trifluoromethoxy)pyridine
Methyl 3-chloro-4-methoxy-2-(trifluoromethoxy)pyridine-6-carboxylate
Methyl 2-bromo-6-nitro-5-(trifluoromethoxy)pyridine-3-carboxylate