Methyl 2-(difluoromethyl)pyridine-3-carboxylate
3-(Chloromethyl)-4-(difluoromethyl)-2-(trifluoromethoxy)pyridine-6-sulfonyl chloride
3-(Difluoromethyl)-6-methoxy-2-(trifluoromethyl)pyridine
3-(Chloromethyl)-2-(difluoromethyl)-6-(trifluoromethoxy)pyridine-4-sulfonyl chloride