5-Bromo-2-cyano-4-nitro-3-(trifluoromethoxy)pyridine
2-Bromo-5-chloro-3-iodo-6-(trifluoromethoxy)pyridine
3-Bromo-2-iodo-4-(trifluoromethoxy)pyridine-6-sulfonyl chloride
4-Bromo-5-cyano-2-nitro-3-(trifluoromethoxy)pyridine
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