2-(Bromomethyl)-3-(difluoromethyl)-6-(trifluoromethoxy)pyridine-5-sulfonyl chloride
2-(Bromomethyl)-3-(difluoromethyl)-5-(trifluoromethoxy)pyridine-4-sulfonyl chloride
2-(Bromomethyl)-3-(difluoromethyl)-6-iodopyridine
3-(Aminomethyl)-6-(difluoromethyl)-2-iodopyridine