5-(Difluoromethyl)-4-fluoro-3-iodopyridine-2-sulfonyl chloride
6-(Difluoromethyl)-4-fluoro-3-methylpyridine-2-sulfonyl chloride
3-(Difluoromethyl)-4-fluoro-2-iodopyridine-6-sulfonyl chloride
2-(Difluoromethyl)-4-fluoro-3-methylpyridine-6-sulfonyl chloride