4-(Difluoromethyl)-3-hydroxy-5-nitro-2-(trifluoromethoxy)pyridine
2-Hydroxy-5-methoxy-3-methyl-4-(trifluoromethoxy)pyridine
6-Hydroxy-4-methoxy-3-methyl-2-(trifluoromethoxy)pyridine
4-(Difluoromethyl)-6-hydroxy-2-nitro-3-(trifluoromethoxy)pyridine
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