3-Bromo-6-cyano-4-(trifluoromethoxy)pyridine-2-sulfonyl chloride
6-Chloro-2-(chloromethyl)-3-(difluoromethyl)-4-(trifluoromethyl)pyridine
4-Chloro-6-(difluoromethyl)-3-iodopyridine-2-carbonyl chloride
2-Iodo-5-methyl-3-(trifluoromethoxy)pyridine-4-carbonyl chloride