Record Information
Creation date2018-05-02 12:58:43 UTC
Update date2018-05-04 14:08:35 UTC
FoodComEx IDPC001229
FoodDB RecordFDB022331
Chemical Information
NameThreonic acid
DescriptionThreonic acid also known as threonate, belongs to the class of organic compounds known as sugar acids. Sugar acids are compounds containing a saccharide unit which bears a carboxylic acid group. Threonic acid is a weak acid (based on its pKa). Threonic acid is derived from threose. The L-isomer is a metabolite of ascorbic acid (vitamin C). Threonic acid is probably derived from glycated proteins or from the degradation of ascorbic acid. It is a normal component is aqueous humour and blood (PMID: 10420182). One recent study suggested that because L-threonate inhibits DKK1 expression in vitro, it may have potential in the treatment of androgenic alopecia (PMID: 21034532). Threonic acid is a substrate of L-threonate 3-dehydrogenase (EC in the ascorbate and aldarate metabolism pathway (KEGG). Threonate has also been found to be a microbial metabolite (PMID: 20615997).
CAS Number3909-12-4
(R*,S*)-2,3,4-trihydroxy-Butanoic acidhmdb
threo-2,3,4-Trihydroxybutyric acidhmdb
Chemical FormulaC4H8O5
IUPAC name(2S,3R)-2,3,4-trihydroxybutanoic acid
InChI IdentifierInChI=1S/C4H8O5/c5-1-2(6)3(7)4(8)9/h2-3,5-7H,1H2,(H,8,9)/t2-,3+/m1/s1
Isomeric SMILESOC[C@@H](O)[C@H](O)C(O)=O
Average Molecular Weight136.1033
Monoisotopic Molecular Weight136.037173366
Chemical Taxonomy
Description Belongs to the class of organic compounds known as sugar acids and derivatives. Sugar acids and derivatives are compounds containing a saccharide unit which bears a carboxylic acid group.
KingdomOrganic compounds
Super ClassOrganic oxygen compounds
ClassOrganooxygen compounds
Sub ClassCarbohydrates and carbohydrate conjugates
Direct ParentSugar acids and derivatives
Alternative Parents
  • Beta-hydroxy acid
  • Short-chain hydroxy acid
  • Sugar acid
  • Alpha-hydroxy acid
  • Hydroxy acid
  • Monosaccharide
  • Fatty acid
  • Secondary alcohol
  • Polyol
  • Monocarboxylic acid or derivatives
  • Carboxylic acid
  • Carboxylic acid derivative
  • Alcohol
  • Carbonyl group
  • Primary alcohol
  • Hydrocarbon derivative
  • Organic oxide
  • Aliphatic acyclic compound
Molecular FrameworkAliphatic acyclic 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 Available1 to 2 mg
Delivery Time2 weeks
Storage Formpowder
Storage Conditions-18°C
StabilityNot Available
Spectral Data Upon RequestNot Available
Provider Information
Contact NameContact InstitutionContact Email
Augustin ScalbertInternational Agency for Research on Cancer (IARC), Biomarkers Group, 150 cours Albert Thomas, Lyon, FR,
Commercial Vendors
Not Available