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3,6-Dihydroxyphthalonitrile

3,6-Dihydroxypyridazine

1,5-Dihydroxy naphthalene

1,4-Dihydroxynaphthalene

1,6-Dihydroxynaphthalene

2,7-Dihydroxynaphthalene

2,3-Dihydroxynaphthalene

1,7-Dihydroxynaphthalene

1,4-Dihydroxy-2-naphthoic acid

3,7-Dihydroxy-2-naphthoic acid

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