2-Bromo-3-(chloromethyl)-4-cyano-6-(trifluoromethoxy)pyridine
6-Bromo-4-hydroxy-2-(trifluoromethoxy)pyridine-3-sulfonyl chloride
2-Bromo-4-hydroxy-5-(trifluoromethoxy)pyridine-3-sulfonyl chloride
2-Bromo-4-chloro-6-(fluoromethyl)-3-(trifluoromethoxy)pyridine