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