Dihydroxybenzoic acids (DHBA) are a type of
phenolic acid
Phenolic acids or phenolcarboxylic acids are types of aromatic acid compounds. Included in that class are substances containing a phenolic ring and an organic carboxylic acid function (C6-C1 skeleton). Two important naturally occurring types of ph ...
s.
There are six main compounds, having all the same molecular formula
C7H6O4. Those are:
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2,3-Dihydroxybenzoic acid
2,3-Dihydroxybenzoic acid is a natural phenol found in ''Phyllanthus acidus'' and in the aquatic fern ''Salvinia molesta''. It is also abundant in the fruits of '' Flacourtia inermis''. It is a dihydroxybenzoic acid, a type of organic compound.
T ...
(2-Pyrocatechuic acid or hypogallic acid)
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2,4-Dihydroxybenzoic acid (β-Resorcylic acid)
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2,5-Dihydroxybenzoic acid
Gentisic acid is a dihydroxybenzoic acid. It is a derivative of benzoic acid and a minor (1%) product of the metabolic break down of aspirin, excreted by the kidneys.
It is also found in the African tree '' Alchornea cordifolia'' and in wine.
P ...
(Gentisic acid)
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2,6-Dihydroxybenzoic acid (γ-Resorcylic acid)
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3,4-Dihydroxybenzoic acid (Protocatechuic acid)
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3,5-Dihydroxybenzoic acid
3,5-Dihydroxybenzoic acid (α-resorcylic acid) is a dihydroxybenzoic acid. It is a colorless solid.
Preparation and occurrence
It is prepared by disulfonation of benzoic acid followed by hydrolysis of the disulfonate.
It is a metabolite of alky ...
(α-Resorcylic acid)
Orsellinic acid is also a dihydoxybenzoic acid having an extra methyl group.
{{Chemistry index
Dihydroxybenzoic acids