6-(Bromomethyl)-3-(difluoromethyl)-4-iodopyridine-2-acetonitrile
4-(Bromomethyl)-6-(difluoromethyl)-3-iodo-2-(trifluoromethyl)pyridine
3-(Difluoromethyl)-2-iodo-4-methylpyridine-6-sulfonyl chloride
2-(Difluoromethyl)-5-iodo-3-methylpyridine-6-sulfonyl chloride