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