3,4-Dimethoxy-5-hydroxy-2-(trifluoromethoxy)pyridine
3,4-Dimethoxy-5-(difluoromethyl)-2-(trifluoromethoxy)pyridine
4,6-Dimethoxy-3-(difluoromethyl)-2-(trifluoromethoxy)pyridine
2,6-Dimethoxy-3-(fluoromethyl)-4-(trifluoromethoxy)pyridine
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