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