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