3-(Difluoromethyl)-5-iodo-2-nitropyridine
4-(Chloromethyl)-3-(difluoromethyl)-2-(trifluoromethoxy)pyridine-6-sulfonyl chloride
3-(Difluoromethyl)-4-iodo-2-nitropyridine
4-(Chloromethyl)-2-(difluoromethyl)-6-(trifluoromethoxy)pyridine-3-sulfonyl chloride