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