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