Record Information
Creation date2015-10-09 22:33:37 UTC
Update date2017-01-19 02:36:42 UTC
FoodComEx IDPC000961
FoodDB RecordFDB000845
Chemical Information
Name2,6-Dihydroxybenzoic acid
Description2,6-dihydroxybenzoic acid, also known as gamma-resorcylic acid or 6-hydroxysalicylic acid, is a member of the class of compounds known as salicylic acids. Salicylic acids are ortho-hydroxylated benzoic acids. 2,6-dihydroxybenzoic acid is slightly soluble (in water) and a moderately acidic compound (based on its pKa). 2,6-dihydroxybenzoic acid can be found in beer and olive, which makes 2,6-dihydroxybenzoic acid a potential biomarker for the consumption of these food products. 2,6-dihydroxybenzoic acid can be found primarily in blood and urine. 2,6-Dihydroxybenzoic acid (γ-resorcylic acid) is a dihydroxybenzoic acid. It is a very strong acid due to its intramolecular hydrogen bonding .
CAS Number303-07-1
g-Resorcylic acid, 8CIdb_source
Resorcinol-2-carboxylic aciddb_source
Chemical FormulaC7H6O4
IUPAC name2,6-dihydroxybenzoic acid
InChI IdentifierInChI=1S/C7H6O4/c8-4-2-1-3-5(9)6(4)7(10)11/h1-3,8-9H,(H,10,11)
Isomeric SMILESOC(=O)C1=C(O)C=CC=C1O
Average Molecular Weight154.121
Monoisotopic Molecular Weight154.026608673
Chemical Taxonomy
Description Belongs to the class of organic compounds known as salicylic acids. These are ortho-hydroxylated benzoic acids.
KingdomOrganic compounds
Super ClassBenzenoids
ClassBenzene and substituted derivatives
Sub ClassBenzoic acids and derivatives
Direct ParentSalicylic acids
Alternative Parents
  • Salicylic acid
  • Benzoic acid
  • Benzoyl
  • Resorcinol
  • 1-hydroxy-4-unsubstituted benzenoid
  • 1-hydroxy-2-unsubstituted benzenoid
  • Phenol
  • Vinylogous acid
  • Carboxylic acid derivative
  • Carboxylic acid
  • Monocarboxylic acid or derivatives
  • Organic oxygen compound
  • Organic oxide
  • Organooxygen compound
  • Hydrocarbon derivative
  • Aromatic homomonocyclic compound
Molecular FrameworkAromatic homomonocyclic compounds
External Descriptors
Physico-Chemical Properties - Experimental
Experimental logPNot Available
Experimental Water SolubilityNot Available
Melting PointNot Available
Foods of Origin
FoodContent Range AverageReference
Production Data
Production Methodcommercial
Production Method ReferenceNot Available
Production Method Reference FileNot Available
Quantity AvailableProduction upon request, up to 2 g
Delivery TimeNot Available
Storage Formsolid
Storage Conditions-80°C
StabilityNot Available
PurityNot Available
Spectral Data Upon RequestNot Available
Provider Information
Contact NameContact InstitutionContact Email
Rosa Vazquez
Commercial Vendors
AKSci E671
AKSci J94132
MetaSci HMDB0013676
Sigma-Aldrich HMDB0013676
Toronto Research Chemicals H946265