Methyl 2-methoxy-3-nitro-5-(trifluoromethoxy)pyridine-6-carboxylate
Ethyl 3-methoxy-6-nitro-4-(trifluoromethoxy)pyridine-2-carboxylate
Methyl 3-(bromomethyl)-5-methoxy-2-(trifluoromethoxy)pyridine-4-carboxylate
Ethyl 5-methoxy-2-nitro-3-(trifluoromethoxy)pyridine-4-carboxylate