2,4-Dihydroxy-6-(trifluoromethoxy)pyridine-3-carboxylic acid
3-Amino-2,5-dihydroxy-4-(trifluoromethoxy)pyridine
2,4-Dihydroxy-3-(trifluoromethoxy)pyridine-6-carboxylic acid
2,3-Dihydroxy-6-(trifluoromethoxy)pyridine-4-carboxylic acid
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