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Record Information
Version5.0
StatusDetected and Quantified
Creation Date2006-08-16 15:25:22 UTC
Update Date2022-03-07 02:49:10 UTC
HMDB IDHMDB0001471
Secondary Accession Numbers
  • HMDB01471
Metabolite Identification
Common NameEpipregnanolone
DescriptionEpipregnanolone, also known as 3beta-hydroxy-5beta-pregnan-20-one, belongs to the class of organic compounds known as gluco/mineralocorticoids, progestogens, and derivatives. These are steroids with a structure based on a hydroxylated prostane moiety. Thus, epipregnanolone is considered to be a steroid lipid molecule. Epipregnanolone is a very hydrophobic molecule, practically insoluble (in water), and relatively neutral. Epipregnanolone is a pregnane found in the urine of pregnant women and sows. It has anesthetic, hypnotic, and sedative properties. It is a substrate of the enzyme 3beta-hydroxy-5beta-steroid dehydrogenase (EC 1.1.1.277).
Structure
Thumb
Synonyms
Chemical FormulaC21H34O2
Average Molecular Weight318.4935
Monoisotopic Molecular Weight318.255880332
IUPAC Name1-[(1S,2S,5S,7R,10R,11S,14S,15S)-5-hydroxy-2,15-dimethyltetracyclo[8.7.0.0^{2,7}.0^{11,15}]heptadecan-14-yl]ethan-1-one
Traditional Name1-[(1S,2S,5S,7R,10R,11S,14S,15S)-5-hydroxy-2,15-dimethyltetracyclo[8.7.0.0^{2,7}.0^{11,15}]heptadecan-14-yl]ethanone
CAS Registry Number128-21-2
SMILES
[H][C@@]1(CC[C@@]2([H])[C@]3([H])CC[C@]4([H])C[C@@H](O)CC[C@]4(C)[C@@]3([H])CC[C@]12C)C(C)=O
InChI Identifier
InChI=1S/C21H34O2/c1-13(22)17-6-7-18-16-5-4-14-12-15(23)8-10-20(14,2)19(16)9-11-21(17,18)3/h14-19,23H,4-12H2,1-3H3/t14-,15+,16+,17-,18+,19+,20+,21-/m1/s1
InChI KeyAURFZBICLPNKBZ-GRWISUQFSA-N
Chemical Taxonomy
Description Belongs to the class of organic compounds known as gluco/mineralocorticoids, progestogins and derivatives. These are steroids with a structure based on a hydroxylated prostane moiety.
KingdomOrganic compounds
Super ClassLipids and lipid-like molecules
ClassSteroids and steroid derivatives
Sub ClassPregnane steroids
Direct ParentGluco/mineralocorticoids, progestogins and derivatives
Alternative Parents
Substituents
  • Progestogin-skeleton
  • 20-oxosteroid
  • 3-hydroxysteroid
  • Hydroxysteroid
  • 3-beta-hydroxysteroid
  • Oxosteroid
  • Cyclic alcohol
  • Ketone
  • Secondary alcohol
  • Organooxygen compound
  • Hydrocarbon derivative
  • Organic oxide
  • Organic oxygen compound
  • Carbonyl group
  • Alcohol
  • Aliphatic homopolycyclic compound
Molecular FrameworkAliphatic homopolycyclic compounds
External Descriptors
Ontology
Physiological effect
Disposition
Process
Role
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
  • Extracellular
  • Membrane
Biospecimen Locations
  • Blood
Tissue LocationsNot Available
Pathways
Normal Concentrations
BiospecimenStatusValueAgeSexConditionReferenceDetails
BloodDetected and Quantified0.003 +/- 0.0018 uMAdult (>18 years old)BothNormal details
BloodDetected but not QuantifiedNot QuantifiedAdult (>18 years old)Male
Normal
details
BloodDetected and Quantified0.00034 +/- 0.00011 uMAdult (>18 years old)MaleNormal details
Abnormal Concentrations
BiospecimenStatusValueAgeSexConditionReferenceDetails
BloodDetected and Quantified0.003 +/- 0.001 uMAdult (>18 years old)Female
Prepartum depression
details
BloodDetected but not QuantifiedNot QuantifiedAdult (>18 years old)Male
Schizophrenia
details
Associated Disorders and Diseases
Disease References
Prepartum depression
  1. Pearson Murphy BE, Steinberg SI, Hu FY, Allison CM: Neuroactive ring A-reduced metabolites of progesterone in human plasma during pregnancy: elevated levels of 5 alpha-dihydroprogesterone in depressed patients during the latter half of pregnancy. J Clin Endocrinol Metab. 2001 Dec;86(12):5981-7. [PubMed:11739473 ]
Schizophrenia
  1. Bicikova M, Hill M, Ripova D, Mohr P, Hampl R: Determination of steroid metabolome as a possible tool for laboratory diagnosis of schizophrenia. J Steroid Biochem Mol Biol. 2013 Jan;133:77-83. doi: 10.1016/j.jsbmb.2012.08.009. Epub 2012 Aug 24. [PubMed:22944140 ]
Associated OMIM IDs
DrugBank IDNot Available
Phenol Explorer Compound IDNot Available
FooDB IDFDB022642
KNApSAcK IDNot Available
Chemspider ID198867
KEGG Compound IDC11825
BioCyc IDNot Available
BiGG IDNot Available
Wikipedia LinkEpipregnanolone
METLIN IDNot Available
PubChem Compound228491
PDB IDNot Available
ChEBI ID16229
Food Biomarker OntologyNot Available
VMH IDNot Available
MarkerDB IDNot Available
Good Scents IDNot Available
References
Synthesis ReferenceHalpern, Otto. Pregnenolones and androstenolones. U.S. (1969), 6 pp.
Material Safety Data Sheet (MSDS)Not Available
General References
  1. Pearson Murphy BE, Steinberg SI, Hu FY, Allison CM: Neuroactive ring A-reduced metabolites of progesterone in human plasma during pregnancy: elevated levels of 5 alpha-dihydroprogesterone in depressed patients during the latter half of pregnancy. J Clin Endocrinol Metab. 2001 Dec;86(12):5981-7. [PubMed:11739473 ]