3-(Difluoromethyl)pyridine-5-sulfonyl chloride
2-(Difluoromethyl)-3-methyl-5-(trifluoromethyl)pyridine
4-(Chloromethyl)-2-(trifluoromethoxy)-3-(trifluoromethyl)pyridine-6-sulfonyl chloride
2-(Difluoromethyl)pyridine-6-sulfonyl chloride
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