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