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