2-Bromo-6-nitro-4-(trifluoromethoxy)pyridine-3-sulfonyl chloride
3-Bromo-2-nitro-6-(trifluoromethoxy)pyridine-4-acetonitrile
2-Bromo-5-nitro-6-(trifluoromethoxy)pyridine-3-sulfonyl chloride
2-Bromo-5-nitro-4-(trifluoromethoxy)pyridine-3-sulfonyl chloride