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