4-Chloro-3,6-dihydroxy-2-(trifluoromethoxy)pyridine
3-Chloro-2,5-dihydroxy-4-(trifluoromethoxy)pyridine
5-Bromo-2,3-diiodo-4-(trifluoromethoxy)pyridine
6-(Chloromethyl)-3,4-diiodo-2-(trifluoromethoxy)pyridine
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