3,4-Dimethoxy-6-hydroxy-2-(trifluoromethoxy)pyridine
2,3-Dimethyl-6-hydroxy-4-(trifluoromethoxy)pyridine
3,4-Dimethoxy-2-(difluoromethyl)-6-(trifluoromethoxy)pyridine
2,3-Dimethyl-6-fluoro-4-(trifluoromethoxy)pyridine
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