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