4-Bromo-5-chloro-2-(trifluoromethoxy)pyridine-3-sulfonyl chloride
3-Bromo-6-iodo-2-(trifluoromethoxy)pyridine-5-acetic acid
4-Bromo-3-cyano-5-(trifluoromethoxy)pyridine-2-sulfonyl chloride
4-Bromo-6-chloro-2-(trifluoromethoxy)pyridine-3-sulfonyl chloride