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