Dihydroxybenzoic acids (DHBA) are a type of phenolic acids.
There are six main compounds, having all the same molecular formula C7H6O4. Those are:
Orsellinic acid is also a dihydoxybenzoic acid having an extra methyl group.
Phenolic acids (C6-C1) and their glycosides | |||||
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Monohydroxybenzoic acids |
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Dihydroxybenzoic acids |
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Trihydroxybenzoic acids |
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