2,5-Dihydroxy-4-iodo-3-(trifluoromethoxy)pyridine
3,4-Diiodo-5-(difluoromethyl)-2-(trifluoromethoxy)pyridine
4,6-Dihydroxy-2-iodo-3-(trifluoromethoxy)pyridine
3,4-Diiodo-2-(difluoromethyl)-5-(trifluoromethoxy)pyridine
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