(organic chemistry, in combination) Three hydroxy groups in a molecule

resveratrol

(organic chemistry) Any salt or ester of a trihydroxybenzoic acid.

plural of trihydroxybenzoate

plural of trihydroxyanthraquinone

(organic chemistry) Any of several isomeric organic compounds with formula C₁₄H₈O₅, formally derived from anthraquinone by replacing three hydrogen atoms by hydroxyl groups, and including several historically important dyes.

(organic chemistry) Any trihydroxy, methyl derivative of anthraquinone, but especially 6-methyl-1,3,8-trihydroxyanthraquinone (emodin)

plural of trihydroxymethylanthraquinone

(organic chemistry) Any trihydroxy derivative of cholesterol, but especially (3β)-cholest-5-ene-1,1,2,3-tetrol

(organic chemistry) Any trihydroxy derivative of benzene