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