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