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