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