2-(Difluoromethyl)-3-fluoro-5-iodopyridine-4-sulfonyl chloride
2-(Difluoromethyl)-3-fluoro-4-iodopyridine-5-sulfonyl chloride
5-(Difluoromethyl)-2-fluoro-4-hydroxypyridine-3-sulfonyl chloride
6-Bromo-3-chloropyridine-2-sulfonyl chloride
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