5-(Bromomethyl)-2-(difluoromethyl)-3-(trifluoromethyl)pyridine-6-sulfonyl chloride
5-(Bromomethyl)-2-(difluoromethyl)-3-(trifluoromethyl)pyridine-4-sulfonyl chloride
4-(Bromomethyl)-5-(difluoromethyl)-2-(trifluoromethyl)pyridine-3-sulfonyl chloride
4-(Bromomethyl)-3-(difluoromethyl)-6-(trifluoromethyl)pyridine-2-sulfonyl chloride