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