2-Bromo-3-iodopyridine-6-sulfonyl chloride
4-(Chloromethyl)-3-(difluoromethyl)-6-(trifluoromethyl)pyridine-2-sulfonyl chloride
Ethyl 3-bromo-2-(fluoromethyl)-5-(trifluoromethoxy)pyridine-4-carboxylate
5-Iodo-2-(trifluoromethoxy)pyridine-4-sulfonyl chloride