5-Hydroxy-3-nitro-4-(trifluoromethoxy)pyridine-2-carboxaldehyde
2-(Difluoromethyl)-3-hydroxy-5-(trifluoromethoxy)pyridine-4-methanol
3-(Difluoromethyl)-6-hydroxy-2-(trifluoromethoxy)pyridine-4-acetonitrile
5-Hydroxy-4-nitro-3-(trifluoromethoxy)pyridine-2-carboxaldehyde