3-Chloro-6-iodo-2-(trifluoromethoxy)pyridine-5-sulfonyl chloride
6-Bromo-2-(fluoromethyl)-4-nitro-3-(trifluoromethoxy)pyridine
5-Chloro-2-iodo-3-(trifluoromethoxy)pyridine-6-sulfonyl chloride
4-Chloro-3-iodo-2-(trifluoromethoxy)pyridine-6-sulfonyl chloride