2-Bromo-5-iodo-3-(trifluoromethoxy)pyridine-4-sulfonyl chloride
2-Bromo-5-methoxy-6-(trifluoromethoxy)pyridine-3-carboxylic acid
3-Bromo-5-fluoro-4-(trifluoromethoxy)pyridine-2-sulfonyl chloride
6-Bromo-4-iodo-3-(trifluoromethoxy)pyridine-2-sulfonyl chloride