Ethyl 3-hydroxy-5-nitro-4-(trifluoromethoxy)pyridine-2-carboxylate
Ethyl 5-hydroxy-4-nitro-2-(trifluoromethoxy)pyridine-3-carboxylate
4-Fluoro-6-(fluoromethyl)-2-(trifluoromethoxy)pyridine-3-methanol
3-Fluoro-2-(fluoromethyl)-6-(trifluoromethoxy)pyridine-5-methanol