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