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2,7-Dihydroxy-9-fluorenone

2,6-Dihydroxy-5-fluoro-3-cyanopyridine

4,6-Dihydroxy-5-formylpyrimidine

2,4-Dihydroxy-N-(2-hydroxyethyl)benzamide

3,4-Dihydroxymandelic acid

4,6-Dihydroxy-2-mercaptopyrimidine

Dihydroxybis(ammonium lactato)titanium(IV)

7,8-Dihydroxycoumarin

3,4-Dihydroxy-3-cyclobutene-1,2-dione

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