Record Information
Version1.0
Creation date2015-10-09 22:27:20 UTC
Update date2017-01-19 02:36:10 UTC
FoodComEx IDPC000017
FoodDB RecordFDB010508
Chemical Information
Name4-Hydroxybenzoic acid
Description4-Hydroxybenzoic acid, also known as p-hydroxybenzoate or 4-carboxyphenol, 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 group. 4-Hydroxybenzoic acid is a neutral compound with a nutty and phenolic taste. 4-Hydroxybenzoic acid exists in all living species, from bacteria to humans. In humans, 4-hydroxybenzoic acid is involved in ubiquinone biosynthesis. 4-Hydroxybenzoic acid is found in highest concentrations in red huckleberries, corianders, and garden onions and in lower concentrations in soybeans, rye bread, and almonds. 4-hydroxybenzoic acid has also been detected in sour cherries, common beans, wild carrots, common oregano, and soft-necked garlics. This could make 4-hydroxybenzoic acid a potential biomarker for the consumption of these foods. 4-Hydroxybenzoic acid esters, known as parabens, are used as preservatives in cosmetics and some ophthalmic solutions. It is isomeric with 2-hydroxybenzoic acid, known as salicylic acid, a precursor to aspirin, and with 3-hydroxybenzoic acid. 4-Hydroxybenzoic acid has estrogenic activity and stimulated the growth of breast cancer cell lines (PMID: 16021681). It can be found in Escherichia coli as part of the ubiquinone pathway. In the first step of this pathway, chorismate lyase transforms chorismate into 4-hydroxybenzoate and pyruvate (PMID 1644758). In Pseudomonas sp., 4-hydroxybenzoate and chloride are produced when the enzyme 4-chlorobenzoate dehalogenase acts on the halide bond of 4-chlorobenzoate with H2O (PMID: 6497878).
CAS Number99-96-7
Structure
Thumb
Synonyms
SynonymSource
4-Carboxyphenolbiospider
4-hydroxy-benzoatebiospider
4-Hydroxy-benzoesaeureHMDB
4-hydroxy-benzoic acidbiospider
4-Hydroxybenzoatebiospider
Benzoic acid, 4-hydroxybiospider
Benzoic acid, 4-hydroxy-biospider
Benzoic acid, p-hydroxybiospider
Benzoic acid, p-hydroxy-biospider
Catalpinic acid (obsol.)db_source
Hydroxybenzenecarboxylic acidbiospider
Hydroxybenzoic acidbiospider
Hydroxybenzoic acid, parabiospider
P-carboxyphenolbiospider
P-hydroxy-benzoatebiospider
P-hydroxy-benzoic acidbiospider
P-hydroxybenzoatebiospider
P-hydroxybenzoic acidbiospider
P-salicyclic acidbiospider
P-salicylatebiospider
p-Salicylic aciddb_source
Para-hydroxybenzoic acidbiospider
Paraben-acidHMDB
Chemical FormulaC7H6O3
IUPAC name4-hydroxybenzoic acid
InChI IdentifierInChI=1S/C7H6O3/c8-6-3-1-5(2-4-6)7(9)10/h1-4,8H,(H,9,10)
InChI KeyFJKROLUGYXJWQN-UHFFFAOYSA-N
Isomeric SMILESOC(=O)C1=CC=C(O)C=C1
Average Molecular Weight138.122
Monoisotopic Molecular Weight138.031694053
Chemical Taxonomy
Description 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.
KingdomOrganic compounds
Super ClassBenzenoids
ClassBenzene and substituted derivatives
Sub ClassBenzoic acids and derivatives
Direct ParentHydroxybenzoic acid derivatives
Alternative Parents
Substituents
  • Hydroxybenzoic acid
  • Benzoic acid
  • Benzoyl
  • 1-hydroxy-2-unsubstituted benzenoid
  • Phenol
  • Monocarboxylic acid or derivatives
  • Carboxylic acid
  • Carboxylic acid derivative
  • Organic oxygen compound
  • Organic oxide
  • Hydrocarbon derivative
  • Organooxygen compound
  • Aromatic homomonocyclic compound
Molecular FrameworkAromatic homomonocyclic compounds
External Descriptors
Physico-Chemical Properties - Experimental
PropertyValueReference
Experimental logP1.58HANSCH,C ET AL. (1995)
Experimental Water Solubility5 mg/mL at 25 oCYALKOWSKY,SH & DANNENFELSER,RM (1992)
Melting PointMp 213-214°DFC
Foods of Origin
FoodContent Range AverageReference
FoodReference
Production Data
Production Methodcommercial
Production Method ReferenceNot Available
Production Method Reference FileNot Available
Quantity AvailableProduction upon request, up to 1 g
Delivery TimeNot Available
Storage Formsolid
Storage Conditions-80°C
StabilityNot Available
PurityNot Available
Spectra
Spectral Data Upon RequestNot Available
Provider Information
Contact NameContact InstitutionContact Email
Rosa Vazquez Fresnovazquezf@ualberta.ca
Commercial Vendors
AKSci D775
AKSci J10748
AKSci J92723
Human Metabolome Library HMDB0000500
MetaSci HMDB0000500
Toronto Research Chemicals S088120