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