Dihydroxynaphthalene can refer to any of the following ten isomers:
1,2-Dihydroxynaphthalene 1,3-Dihydroxynaphthalene 1,4-Dihydroxynaphthalene 1,5-Dihydroxynaphthalene 1,6-Dihydroxynaphthalene 1,7-Dihydroxynaphthalene 1,8-Dihydroxynaphthalene 2,3-Dihydroxynaphthalene 2,6-Dihydroxynaphthalene 2,7-Dihydroxynaphthalene
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