4-Bromo-3-methoxy-6-(trifluoromethoxy)pyridine-2-sulfonyl chloride
4-Bromo-3-methoxy-2-(trifluoromethoxy)pyridine-6-sulfonyl chloride
3-Bromo-5-(fluoromethyl)-2-methyl-6-(trifluoromethoxy)pyridine
3-Bromo-5-methoxy-6-(trifluoromethoxy)pyridine-2-sulfonyl chloride