3-Fluoro-6-nitro-2-(trifluoromethoxy)pyridine-4-sulfonamide
5-(Difluoromethyl)-2-fluoro-4-(trifluoromethoxy)pyridine-3-carboxaldehyde
5-Fluoro-2-nitro-4-(trifluoromethoxy)pyridine-3-sulfonamide
4-(Difluoromethyl)-5-fluoro-2-(trifluoromethoxy)pyridine-3-carboxaldehyde