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
3-Methoxy-6-nitro-4-(trifluoromethoxy)pyridine-2-carboxylic acid