2-Bromo-4-nitropyridine-3-sulfonyl chloride
3-Bromo-4-(trifluoromethyl)pyridine-5-acetonitrile
2-Bromo-3-nitropyridine-5-sulfonyl chloride
3-Bromo-2-(trifluoromethyl)pyridine-6-acetonitrile
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