Identification

PhytoHub ID
PHUB000310
Name
Protocatechuic acid
Synonyms
  • 3,4-Dihydroxybenzoic acid
CAS Number
99-50-3
Average Mass
154.121
Monoisotopic Mass
154.026608673
Chemical Formula
C7H6O4
IUPAC Name
3,4-dihydroxybenzoic acid
InChI Key
YQUVCSBJEUQKSH-UHFFFAOYSA-N
InChI Identifier
InChI=1S/C7H6O4/c8-5-2-1-4(7(10)11)3-6(5)9/h1-3,8-9H,(H,10,11)
SMILES
OC(=O)C1=CC(O)=C(O)C=C1
Structure

Calculated Properties

Solubility (ALOGPS)
1.24e+01 g/l
LogS (ALOGPS)
-1.10
LogP (ALOGPS)
1.32
Hydrogen Acceptors
4
Hydrogen Donors
3
Rotatable Bond Count
1
Polar Surface Area
77.76
Refractivity
37.275999999999996
Polarizability
13.8515611568227
Formal Charge
0
Physiological Charge
-1
pKa (strongest basic)
-6.341303650784174
pKa (strongest acidic)
4.160229176821464
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Taxonomy

Family
Polyphenols
Class
Phenolic acids
Sub-class
Hydroxybenzoic acids

Spectra

Record IDSourceDescriptionView
JP007231MassBankEI-B Spectrum - -, [M]+*View Spectra
KZ000068MassBankGC-EI-TOF Spectrum - -, unspecifiedView Spectra
OUF00045MassBankGC-EI-TOF Spectrum - -, unspecifiedView Spectra
PR010227MassBankGC-EI-TOF Spectrum - -, unspecifiedView Spectra
PR100601MassBankLC-ESI-QTOF Spectrum - Ramp 5-60 V, unspecifiedView Spectra
PS032807ReSpectN/A Spectrum - 10, [M-H]-View Spectra

Food Sources

NameGroup
Apple juiceBeverages, Non-alcoholic PublicationsShow
ApricotFruit, Drupes PublicationsShow
CocoaCocoa and cocoa products PublicationsShow
Olive, blackFruit, Drupes PublicationsShow
Olive, greenFruit, Drupes PublicationsShow
OnionVegetables, Onion-family PublicationsShow
PrecursorFood SourceFood Source Group
QuercetinAmerican cranberryFruit, Berries PublicationsShow
Caffeic acidAmerican cranberryFruit, Berries PublicationsShow
Ferulic acidAmerican cranberryFruit, Berries PublicationsShow
QuercetinAppleFruit, Pomes PublicationsShow
Caffeic acidAppleFruit, Pomes PublicationsShow
QuercetinApple juiceBeverages, Non-alcoholic PublicationsShow
Caffeic acidApple juiceBeverages, Non-alcoholic PublicationsShow
Ferulic acidApple juiceBeverages, Non-alcoholic PublicationsShow
Ferulic acidBeerBeverages, Alcoholic PublicationsShow
Ferulic acidBilberryFruit, Berries PublicationsShow
Ferulic acidBlack mulberryFruit, Berries PublicationsShow
QuercetinBlack teaTeas and herbal teas PublicationsShow
Cyanidin 3-O-glucosideBlackberryFruit, Berries PublicationsShow
QuercetinBlackberryFruit, Berries PublicationsShow
Caffeic acidBlackberryFruit, Berries PublicationsShow
Ferulic acidBlackberryFruit, Berries PublicationsShow
Caffeic acidBlueberryFruit, Berries PublicationsShow
Ferulic acidBlueberryFruit, Berries PublicationsShow
QuercetinBroccoliVegetables, Cabbages PublicationsShow
Caffeic acidBroccoliVegetables, Cabbages PublicationsShow
Ferulic acidBroccoliVegetables, Cabbages PublicationsShow
Caffeic acidCarrotVegetables, Root vegetables PublicationsShow
QuercetinCherry tomatoVegetables, Fruit vegetables PublicationsShow
Caffeic acidCiderBeverages, Alcoholic PublicationsShow
Ferulic acidCocoa beanCocoa and cocoa products PublicationsShow
Caffeic acidCoffeeCoffee and coffee products PublicationsShow
Ferulic acidCoffeeCoffee and coffee products PublicationsShow
Ferulic acidCommon beanPulses and beans PublicationsShow
Ferulic acidCommon walnutNuts PublicationsShow
Caffeic acidCommon wheatCereals and cereal products PublicationsShow
Ferulic acidCommon wheatCereals and cereal products PublicationsShow
Ferulic acidCornCereals and cereal products PublicationsShow
Ferulic acidDateFruit, Other fruits PublicationsShow
Caffeic acidEggplantVegetables, Fruit vegetables PublicationsShow
Ferulic acidEggplantVegetables, Fruit vegetables PublicationsShow
QuercetinEuropean cranberryFruit, Berries PublicationsShow
Caffeic acidEuropean cranberryFruit, Berries PublicationsShow
Ferulic acidEuropean cranberryFruit, Berries PublicationsShow
Caffeic acidEuropean plumFruit, Drupes PublicationsShow
Ferulic acidFennelHerbs and Spices PublicationsShow
Ferulic acidGrapefruitFruit, Citrus PublicationsShow
QuercetinGreen teaTeas and herbal teas PublicationsShow
Ferulic acidHard wheatCereals and cereal products PublicationsShow
Cyanidin 3-O-glucosideLettuceVegetables, Leaf vegetables PublicationsShow
QuercetinLettuceVegetables, Leaf vegetables PublicationsShow
Caffeic acidMateBeverages, Non-alcoholic PublicationsShow
Cyanidin 3-O-glucosideOlive, blackFruit, Drupes PublicationsShow
Caffeic acidOlive, blackFruit, Drupes PublicationsShow
Ferulic acidOlive, blackFruit, Drupes PublicationsShow
Caffeic acidOlive, greenFruit, Drupes PublicationsShow
Ferulic acidOlive, greenFruit, Drupes PublicationsShow
QuercetinOnionVegetables, Onion-family PublicationsShow
QuercetinOrange juiceBeverages, Non-alcoholic PublicationsShow
Ferulic acidOrange juiceBeverages, Non-alcoholic PublicationsShow
QuercetinParsnipVegetables, Root vegetables PublicationsShow
Caffeic acidPearFruit, Pomes PublicationsShow
Cyanidin 3-O-glucosidePomegranate juiceBeverages, Non-alcoholic PublicationsShow
Ferulic acidRapeseedOilseed crops PublicationsShow
Ferulic acidRed raspberryFruit, Berries PublicationsShow
Ferulic acidRiceCereals and cereal products PublicationsShow
Ferulic acidRosemaryHerbs and Spices PublicationsShow
Ferulic acidRye breadCereals and cereal products PublicationsShow
Ferulic acidSpinachVegetables, Leaf vegetables PublicationsShow
Cyanidin 3-O-glucosideStrawberryFruit, Berries PublicationsShow
Caffeic acidStrawberryFruit, Berries PublicationsShow
Ferulic acidStrawberryFruit, Berries PublicationsShow
Cyanidin 3-O-glucosideSweet cherryFruit, Drupes PublicationsShow
Caffeic acidSweet cherryFruit, Drupes PublicationsShow
Ferulic acidSweet orangeFruit, Citrus PublicationsShow
Ferulic acidTarragonHerbs and Spices PublicationsShow
QuercetinTomatoVegetables, Fruit vegetables PublicationsShow
Caffeic acidTomatoVegetables, Fruit vegetables PublicationsShow
Ferulic acidTomatoVegetables, Fruit vegetables PublicationsShow
Ferulic acidWhite wineBeverages, Alcoholic PublicationsShow
Caffeic acidWhite wine grapeFruit, Berries PublicationsShow

Metabolism

PrecursorMetaboliteSpeciesBiofluidsFormulaMonoisotopic mass
Cyanidin 3-O-glucoside Protocatechuic acidhumanfaeces, serum, urineC7H6O4154.026608673 Publications
Quercetin Protocatechuic acidin vitro (human)duodenal juiceC7H6O4154.026608673 Publications
Caffeic acid Protocatechuic acidhumanNot AvailableC7H6O4154.026608673 Publications
Ferulic acid Protocatechuic acidhumanplasma, urineC7H6O4154.026608673 Publications
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