Np mrd loader

Record Information
Version2.0
Created at2022-05-11 16:31:37 UTC
Updated at2022-05-11 16:31:37 UTC
NP-MRD IDNP0086809
Secondary Accession NumbersNone
Natural Product 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 is an extremely weak basic (essentially neutral) compound (based on its pKa). Alpha-CEHC exists in all living organisms, ranging from bacteria to humans. Outside of the human body, alpha-CEHC has been detected, but not quantified in, milk (cow). This could make alpha-cehc a potential biomarker for the consumption of these foods. 2,5,7,8-Tetramethyl-2-(2'-carboxyethyl)-6-hydroxychroman has been identified as a major water-soluble metabolite of vitamin E, which circulates in the blood and is excreted with the urine. About one-third of the alpha-CEHC circulating in the blood is present as alpha-CEHC glucuronide (PMID: 10552913 ). alpha-CEHC was first documented in 1999 (PMID: 10552913). Alpha-Carboxyethyl hydrochroman has been identified as a major water-soluble metabolite of vitamin E, which circulates in the blood and is excreted in the urine (PMID: 12420750 ) (PMID: 12420750) (PMID: 11841923).
Structure
Thumb
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 Mass278.3435 Da
Monoisotopic Mass278.15181 Da
IUPAC Name3-(6-hydroxy-2,5,7,8-tetramethyl-3,4-dihydro-2H-1-benzopyran-2-yl)propanoic acid
Traditional Nameα-cehc
CAS Registry NumberNot Available
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
Experimental Spectra
Not Available
Predicted Spectra
Spectrum TypeDescriptionDepositor IDDepositor OrganizationDepositorDeposition DateView
1D NMR13C NMR Spectrum (1D, 25 MHz, D2O, predicted)Wishart LabWishart LabDavid Wishart2021-06-20View Spectrum
1D NMR1H NMR Spectrum (1D, 100 MHz, D2O, predicted)Wishart LabWishart LabDavid Wishart2021-06-20View Spectrum
1D NMR13C NMR Spectrum (1D, 252 MHz, D2O, predicted)Wishart LabWishart LabDavid Wishart2021-06-20View Spectrum
1D NMR1H NMR Spectrum (1D, 1000 MHz, D2O, predicted)Wishart LabWishart LabDavid Wishart2021-06-20View Spectrum
1D NMR13C NMR Spectrum (1D, 50 MHz, D2O, predicted)Wishart LabWishart LabDavid Wishart2021-06-20View Spectrum
1D NMR1H NMR Spectrum (1D, 200 MHz, D2O, predicted)Wishart LabWishart LabDavid Wishart2021-06-20View Spectrum
1D NMR13C NMR Spectrum (1D, 75 MHz, D2O, predicted)Wishart LabWishart LabDavid Wishart2021-06-20View Spectrum
1D NMR1H NMR Spectrum (1D, 300 MHz, D2O, predicted)Wishart LabWishart LabDavid Wishart2021-06-20View Spectrum
1D NMR13C NMR Spectrum (1D, 101 MHz, D2O, predicted)Wishart LabWishart LabDavid Wishart2021-06-20View Spectrum
1D NMR1H NMR Spectrum (1D, 400 MHz, D2O, predicted)Wishart LabWishart LabDavid Wishart2021-06-20View Spectrum
1D NMR13C NMR Spectrum (1D, 126 MHz, D2O, predicted)Wishart LabWishart LabDavid Wishart2021-06-20View Spectrum
1D NMR1H NMR Spectrum (1D, 500 MHz, D2O, predicted)Wishart LabWishart LabDavid Wishart2021-06-20View Spectrum
1D NMR13C NMR Spectrum (1D, 151 MHz, D2O, predicted)Wishart LabWishart LabDavid Wishart2021-06-20View Spectrum
1D NMR1H NMR Spectrum (1D, 600 MHz, D2O, predicted)Wishart LabWishart LabDavid Wishart2021-06-20View Spectrum
1D NMR13C NMR Spectrum (1D, 176 MHz, D2O, predicted)Wishart LabWishart LabDavid Wishart2021-06-20View Spectrum
1D NMR1H NMR Spectrum (1D, 700 MHz, D2O, predicted)Wishart LabWishart LabDavid Wishart2021-06-20View Spectrum
1D NMR13C NMR Spectrum (1D, 201 MHz, D2O, predicted)Wishart LabWishart LabDavid Wishart2021-06-20View Spectrum
1D NMR1H NMR Spectrum (1D, 800 MHz, D2O, predicted)Wishart LabWishart LabDavid Wishart2021-06-20View Spectrum
1D NMR13C NMR Spectrum (1D, 226 MHz, D2O, predicted)Wishart LabWishart LabDavid Wishart2021-06-20View Spectrum
1D NMR1H NMR Spectrum (1D, 900 MHz, D2O, predicted)Wishart LabWishart LabDavid Wishart2021-06-20View Spectrum
Chemical Shift Submissions
Not Available
Species
Species of Origin
Species NameSourceReference
Anas platyrhynchosFooDB
AnatidaeFooDB
Anser anserFooDB
Bison bisonFooDB
Bos taurusFooDB
Bos taurus X Bison bisonFooDB
Bubalus bubalisFooDB
Capra aegagrus hircusFooDB
CervidaeFooDB
Cervus canadensisFooDB
ColumbaFooDB
ColumbidaeFooDB
Dromaius novaehollandiaeFooDB
Equus caballusFooDB
Gallus gallusFooDB
Lagopus mutaFooDB
LeporidaeFooDB
Lepus timidusFooDB
Melanitta fuscaFooDB
Meleagris gallopavoFooDB
Numida meleagrisFooDB
OdocoileusFooDB
OryctolagusFooDB
Ovis ariesFooDB
PhasianidaeFooDB
Phasianus colchicusFooDB
Struthio camelusFooDB
Sus scrofaFooDB
Sus scrofa domesticaFooDB
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
Physical Properties
StateNot Available
Experimental Properties
PropertyValueReference
Melting PointNot AvailableNot Available
Boiling PointNot AvailableNot Available
Water SolubilityNot AvailableNot Available
LogPNot AvailableNot Available
Predicted Properties
PropertyValueSource
logP2.9ALOGPS
logP3.88ChemAxon
logS-3.1ALOGPS
pKa (Strongest Acidic)4.4ChemAxon
pKa (Strongest Basic)-4.9ChemAxon
Physiological Charge-1ChemAxon
Hydrogen Acceptor Count4ChemAxon
Hydrogen Donor Count2ChemAxon
Polar Surface Area66.76 ŲChemAxon
Rotatable Bond Count3ChemAxon
Refractivity77.38 m³·mol⁻¹ChemAxon
Polarizability30.5 ųChemAxon
Number of Rings2ChemAxon
BioavailabilityYesChemAxon
Rule of FiveYesChemAxon
Ghose FilterYesChemAxon
Veber's RuleNoChemAxon
MDDR-like RuleNoChemAxon
HMDB IDHMDB0001518
DrugBank IDNot Available
Phenol Explorer Compound IDNot Available
FoodDB 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
Good Scents IDNot Available
References
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. doi: 10.1080/1071576021000005357. [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. doi: 10.1016/s0891-5849(01)00800-0. [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. doi: 10.1006/abio.1999.4312. [PubMed:10552913 ]