Methyl 6-methoxy-3-nitro-2-(trifluoromethoxy)pyridine-4-carboxylate
Methyl 2-methoxy-4-nitro-6-(trifluoromethoxy)pyridine-3-carboxylate
Methyl 2-methoxy-3-nitro-4-(trifluoromethoxy)pyridine-6-carboxylate
5-Methoxy-2-methyl-4-(trifluoromethoxy)pyridine-3-acetonitrile