4-(Difluoromethyl)-5-iodopyridine-2-carboxaldehyde
3-(Bromomethyl)-6-(trifluoromethoxy)-4-(trifluoromethyl)pyridine-2-sulfonyl chloride
5-(Bromomethyl)-2-(trifluoromethoxy)-3-(trifluoromethyl)pyridine-4-sulfonyl chloride
5-(Difluoromethyl)-3-iodopyridine-2-carboxaldehyde