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