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