Not Available
Record Information
Version1.0
StatusDetected and Quantified
Creation Date2022-04-19 21:49:42 UTC
Update Date2024-09-27 19:05:33 UTC
Metabolite IDMMDBc0048013
Metabolite Identification
Common NameProtocatechuic acid
DescriptionProtocatechuic acid, also known as protocatechuate or 3,4-dihydroxybenzoate, belongs to the class of organic compounds known as hydroxybenzoic acid derivatives. Hydroxybenzoic acid derivatives are compounds containing a hydroxybenzoic acid (or a derivative), which is a benzene ring bearing a carboxyl and a hydroxyl groups. The enzyme protocatechuate 3,4-dioxygenase uses 3,4-dihydroxybenzoate and O2 to produce 3-carboxy-cis,cis-muconate. Protocatechuic acid is a drug. In the analogous hardening of the cockroach ootheca, the phenolic substance concerned is protocatechuic acid. Protocatechuic acid is a mild, balsamic, and phenolic tasting compound. Outside of the human body, protocatechuic acid is found, on average, in the highest concentration in a few different foods, such as garden onions, cocoa powders, and star anises and in a lower concentration in lentils, liquors, and red raspberries. Protocatechuic acid has also been detected, but not quantified in several different foods, such as cloud ear fungus, american pokeweeds, common mushrooms, fruits, and feijoa. This could make protocatechuic acid a potential biomarker for the consumption of these foods. It is also found in Allium cepa (17,540 ppm). It is a major metabolite of antioxidant polyphenols found in green tea. Similarly, PCA was reported to increase proliferation and inhibit apoptosis of neural stem cells. In vitro testing documented antioxidant and anti-inflammatory activity of PCA, while liver protection in vivo was measured by chemical markers and histological assessment.
Structure
Synonyms
ValueSource
4,5-Dihydroxybenzoic acidChEBI
4-Carboxy-1,2-dihydroxybenzeneChEBI
Protocatehuic acidChEBI
3,4-Dihydroxybenzoic acidKegg
ProtocatechuateKegg
4,5-DihydroxybenzoateGenerator
ProtocatehuateGenerator
3,4-DihydroxybenzoateGenerator
Protocatechuic acid, monosodium saltHMDB
Protocatechuic acid, carboxy-14C-labeledHMDB
2,4-DihydroxybenzoateHMDB
2,4-Dihydroxybenzoic acidHMDB
b-ResorcylateHMDB
b-Resorcylic acidHMDB
beta-ResorcylateHMDB
beta-Resorcylic acidHMDB
3,4-DHBAHMDB
1,2-Dihydroxybenzene-4-carboxylic acidPhytoBank
Protocatechoic acidPhytoBank
Proto-catechuic acidPhytoBank
Protocatechuic acidHMDB
Molecular FormulaC7H6O4
Average Mass154.121
Monoisotopic Mass154.026608673
IUPAC Name3,4-dihydroxybenzoic acid
Traditional Name3,4-dihydroxybenzoic acid
CAS Registry NumberNot Available
SMILES
OC(=O)C1=CC(O)=C(O)C=C1
InChI Identifier
InChI=1S/C7H6O4/c8-5-2-1-4(7(10)11)3-6(5)9/h1-3,8-9H,(H,10,11)
InChI KeyYQUVCSBJEUQKSH-UHFFFAOYSA-N