3,4-Dihydroxy-2-methyl-5-(trifluoromethoxy)pyridine
4-(Fluoromethyl)-5-methyl-3-(trifluoromethoxy)pyridine-2-carboxylic acid
2,6-Dihydroxy-3-methyl-4-(trifluoromethoxy)pyridine
3,6-Dihydroxy-4-methyl-2-(trifluoromethoxy)pyridine
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