2,4-Dihydroxy-6-(difluoromethyl)-3-(trifluoromethoxy)pyridine
2,3-Diamino-4-iodo-6-(trifluoromethoxy)pyridine
3,4-Diamino-2-hydroxy-6-(trifluoromethoxy)pyridine
3,6-Diamino-2-hydroxy-4-(trifluoromethoxy)pyridine
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