6-(Chloromethyl)-4-(trifluoromethoxy)-3-(trifluoromethyl)pyridine-2-sulfonyl chloride
5-(Chloromethyl)-4-(difluoromethyl)-2-(trifluoromethyl)pyridine
2-(Difluoromethyl)-4-iodopyridine-6-acetonitrile
2-(Chloromethyl)-3-(trifluoromethoxy)-5-(trifluoromethyl)pyridine-6-sulfonyl chloride