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