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Record Information
Version5.0
StatusDetected and Quantified
Creation Date2005-11-16 15:48:42 UTC
Update Date2022-09-22 17:43:46 UTC
HMDB IDHMDB0001518
Secondary Accession Numbers
  • HMDB01518
Metabolite Identification
Common Namealpha-CEHC
Descriptionalpha-CEHC, also known as a-cehc, belongs to the class of organic compounds known as 1-benzopyrans. These are organic aromatic compounds that 1-benzopyran, a bicyclic compound made up of a benzene ring fused to a pyran, so that the oxygen atom is at the 1-position. alpha-CEHC exists in all living organisms, ranging from bacteria to humans. alpha-CEHC has been detected, but not quantified in, several different foods, such as anatidaes (Anatidae), chickens (Gallus gallus), domestic pigs (Sus scrofa domestica), and milk (cow). This could make alpha-cehc a potential biomarker for the consumption of these foods. Based on a literature review a small amount of articles have been published on alpha-CEHC.
Structure
Data?1582752207
Synonyms
ValueSource
a-CEHCGenerator
Α-cehcGenerator
3-(6-Hydroxy-2,5,7,8-tetramethyl-3,4-dihydro-2H-1-benzopyran-2-yl)propanoateHMDB
α-Carboxyethyl hydrochromanHMDB
alpha-Carboxyethyl hydrochromanGenerator
2,5,7,8-Tetramethyl-2(2'-carboxyethyl)-6-hydroxychromanHMDB
2,5,7,8-Tetramethyl-2-(β-carboxyethyl)-6-hydroxychromanGenerator
2,5,7,8-Tetramethyl-2-(beta-carboxyethyl)-6-hydroxychromanHMDB
6-Hydroxy-2-(2-carboxylethyl)-2,5,7,8-tetramethylchromanHMDB
6-Hydroxy-2-carboxylethyl-2,5,7,8-tetramethylchromanHMDB
alpha-CEHCMeSH
Chemical FormulaC16H22O4
Average Molecular Weight278.3435
Monoisotopic Molecular Weight278.151809192
IUPAC Name3-(6-hydroxy-2,5,7,8-tetramethyl-3,4-dihydro-2H-1-benzopyran-2-yl)propanoic acid
Traditional Nameα-cehc
CAS Registry Number4072-32-6
SMILES
CC1=C(O)C(C)=C2CCC(C)(CCC(O)=O)OC2=C1C
InChI Identifier
InChI=1S/C16H22O4/c1-9-10(2)15-12(11(3)14(9)19)5-7-16(4,20-15)8-6-13(17)18/h19H,5-8H2,1-4H3,(H,17,18)
InChI KeyAXODOWFEFKOVSH-UHFFFAOYSA-N
Chemical Taxonomy
Description Belongs to the class of organic compounds known as 1-benzopyrans. These are organic aromatic compounds that 1-benzopyran, a bicyclic compound made up of a benzene ring fused to a pyran, so that the oxygen atom is at the 1-position.
KingdomOrganic compounds
Super ClassOrganoheterocyclic compounds
ClassBenzopyrans
Sub Class1-benzopyrans
Direct Parent1-benzopyrans
Alternative Parents
Substituents
  • 1-benzopyran
  • Alkyl aryl ether
  • Benzenoid
  • Oxacycle
  • Monocarboxylic acid or derivatives
  • Ether
  • Carboxylic acid
  • Carboxylic acid derivative
  • Organic oxygen compound
  • Organic oxide
  • Hydrocarbon derivative
  • Organooxygen compound
  • Carbonyl group
  • Aromatic heteropolycyclic compound
Molecular FrameworkAromatic heteropolycyclic compounds
External Descriptors
Ontology
Physiological effectNot Available
Disposition
ProcessNot Available
RoleNot Available
Physical Properties
StateSolid
Experimental Molecular Properties
PropertyValueReference
Melting PointNot AvailableNot Available
Boiling PointNot AvailableNot Available
Water SolubilityNot AvailableNot Available
LogPNot AvailableNot Available
Experimental Chromatographic PropertiesNot Available
Predicted Molecular Properties
Predicted Chromatographic Properties
Spectra
Biological Properties
Cellular Locations
  • Membrane (predicted from logP)
Biospecimen Locations
  • Blood
  • Urine
Tissue LocationsNot Available
Pathways
Normal Concentrations
BiospecimenStatusValueAgeSexConditionReferenceDetails
BloodDetected and Quantified0.013 (0.0051-0.020) uMAdult (>18 years old)BothNormal details
Abnormal Concentrations
BiospecimenStatusValueAgeSexConditionReferenceDetails
UrineDetected but not QuantifiedNot QuantifiedNot SpecifiedNot SpecifiedCancer patients undergoing total body irradiation details
Associated Disorders and Diseases
Disease ReferencesNone
Associated OMIM IDsNone
DrugBank IDNot Available
Phenol Explorer Compound IDNot Available
FooDB IDFDB022669
KNApSAcK IDNot Available
Chemspider ID8119154
KEGG Compound IDNot Available
BioCyc IDNot Available
BiGG IDNot Available
Wikipedia LinkNot Available
METLIN IDNot Available
PubChem Compound9943542
PDB IDNot Available
ChEBI ID626842
Food Biomarker OntologyNot Available
VMH IDNot Available
MarkerDB IDNot Available
Good Scents IDNot Available
References
Synthesis ReferencePope, Simon A. S.; Burtin, Guillaume E.; Clayton, Peter T.; Madge, David J.; Muller, David P. R. Synthesis and analysis of conjugates of the major vitamin E metabolite, a-CEHC. Free Radical Biology & Medicine (2002), 33(6), 807-817.
Material Safety Data Sheet (MSDS)Not Available
General References
  1. Betancor-Fernandez A, Sies H, Stahl W, Polidori MC: In vitro antioxidant activity of 2,5,7,8-tetramethyl-2-(2'-carboxyethyl)-6-hydroxychroman (alpha-CEHC), a vitamin E metabolite. Free Radic Res. 2002 Aug;36(8):915-21. [PubMed:12420750 ]
  2. Galli F, Lee R, Dunster C, Kelly FJ: Gas chromatography mass spectrometry analysis of carboxyethyl-hydroxychroman metabolites of alpha- and gamma-tocopherol in human plasma. Free Radic Biol Med. 2002 Feb 15;32(4):333-40. [PubMed:11841923 ]
  3. Stahl W, Graf P, Brigelius-Flohe R, Wechter W, Sies H: Quantification of the alpha- and gamma-tocopherol metabolites 2,5,7, 8-tetramethyl-2-(2'-carboxyethyl)-6-hydroxychroman and 2,7, 8-trimethyl-2-(2'-carboxyethyl)-6-hydroxychroman in human serum. Anal Biochem. 1999 Nov 15;275(2):254-9. [PubMed:10552913 ]