3-Bromo-6-cyano-2-iodo-5-(trifluoromethoxy)pyridine
4-Bromo-2-cyano-6-methoxy-3-(trifluoromethoxy)pyridine
4-Bromo-2-cyano-5-methoxy-3-(trifluoromethoxy)pyridine
4-Bromo-2-cyano-3-methoxy-5-(trifluoromethoxy)pyridine
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