3-(Difluoromethyl)-2-fluoro-6-hydroxypyridine-4-sulfonamide
6-(Chloromethyl)-4-cyano-2-(difluoromethyl)pyridine-3-methanol
6-(Bromomethyl)-4-(difluoromethyl)-2-fluoro-3-hydroxypyridine
4-(Chloromethyl)-6-cyano-2-(difluoromethyl)pyridine-3-carboxaldehyde