Methyl 3-hydroxy-5-nitro-2-(trifluoromethoxy)pyridine-6-carboxylate
5-Hydroxy-3-(trifluoromethoxy)-2-(trifluoromethyl)pyridine-4-carboxaldehyde
Methyl 3-hydroxy-4-nitro-6-(trifluoromethoxy)pyridine-2-carboxylate
Methyl 3-hydroxy-4-nitro-2-(trifluoromethoxy)pyridine-6-carboxylate