3-(Difluoromethyl)-5-(trifluoromethyl)pyridine-2-sulfonyl chloride
2,4-Dibromo-5-(difluoromethyl)pyridine-3-sulfonyl chloride
3-(Difluoromethyl)-4-(trifluoromethyl)pyridine-2-sulfonyl chloride
2,3-Dibromo-6-(difluoromethyl)pyridine-5-sulfonyl chloride