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Record Information
StatusDetected and Quantified
Creation Date2005-11-16 15:48:42 UTC
Update Date2017-10-23 17:20:39 UTC
Secondary Accession Numbers
  • HMDB00319
Metabolite Identification
Common Name18-Hydroxycorticosterone
Description11 beta,18,21-Trihydroxypregn-4-ene-3,20-dione. 18-Hydroxycorticosterone is a derivative of corticosterone. It serves as an intermediate in the synthesis of aldosterone by the enzyme aldosterone synthase in the zona glomerulosa.
SynonymsNot Available
Chemical FormulaC21H30O5
Average Molecular Weight362.4599
Monoisotopic Molecular Weight362.20932407
IUPAC NameNot Available
Traditional NameNot Available
CAS Registry Number561-65-9
SMILESNot Available
InChI Identifier
Chemical Taxonomy
ClassificationNot classified

Biological Location:


  Biofluid and excreta:

  Organ and components:

    Endocrine gland:

  Tissue and substructures:

  Cell and elements:




Route of exposure:



Naturally occurring process:

  Biological process:

    Biochemical pathway:

    Cellular process:


Indirect biological role:

Industrial application:

Biological role:

  Molecular messenger:

Physical Properties
Experimental Properties
Melting PointNot AvailableNot Available
Boiling PointNot AvailableNot Available
Water SolubilityNot AvailableNot Available
LogPNot AvailableNot Available
Predicted PropertiesNot Available
Spectrum TypeDescriptionSplash Key
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (Non-derivatized) - 70eV, Positivesplash10-001i-1639000000-7012f18a6579e07dc571View in MoNA
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (3 TMS) - 70eV, Positivesplash10-03di-1410290000-5789e767e5a0058f10edView in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Positivesplash10-01r2-0019000000-8a12570d1c1a01069d09View in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Positivesplash10-004j-0119000000-2b8864299061070cced5View in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Positivesplash10-0019-3494000000-ebcb1ff70c533c4c9459View in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Negativesplash10-03di-0009000000-0a027947a1d058fb84b7View in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Negativesplash10-03dl-1019000000-cb3605cb617647c036e0View in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Negativesplash10-05fr-5094000000-8d05b88622baf6731c7fView in MoNA
Biological Properties
Cellular Locations
  • Extracellular
  • Membrane
Biofluid Locations
  • Blood
Tissue Location
  • Adrenal Gland
11-beta-hydroxylase deficiency (CYP11B1)Pw000551Pw000551 greyscalePw000551 simpleNot Available
17-alpha-hydroxylase deficiency (CYP17)Pw000542Pw000542 greyscalePw000542 simpleNot Available
21-hydroxylase deficiency (CYP21)Pw000552Pw000552 greyscalePw000552 simpleNot Available
3-Beta-Hydroxysteroid Dehydrogenase DeficiencyPw000695Pw000695 greyscalePw000695 simpleNot Available
Adrenal Hyperplasia Type 3 or Congenital Adrenal Hyperplasia due to 21-hydroxylase DeficiencyPw000177Pw000177 greyscalePw000177 simpleNot Available
Displaying entries 1 - 5 of 11 in total
Normal Concentrations
Not Available
Abnormal Concentrations
BloodDetected and Quantified0.030 (0.012-0.057) uMChildren (1-13 years old)BothTerminal aldosterone biosynthesis defects details
Associated Disorders and Diseases
Disease References
Aldosterone biosynthesis defects
  1. Peter M, Partsch CJ, Sippell WG: Multisteroid analysis in children with terminal aldosterone biosynthesis defects. J Clin Endocrinol Metab. 1995 May;80(5):1622-7. [PubMed:7745009 ]
Associated OMIM IDs
  • 610600 (Aldosterone biosynthesis defects)
DrugBank IDNot Available
DrugBank Metabolite IDNot Available
Phenol Explorer Compound IDNot Available
Phenol Explorer Metabolite IDNot Available
FoodDB IDFDB021945
KNApSAcK IDNot Available
Chemspider ID10748
KEGG Compound IDC01124
BioCyc IDNot Available
BiGG IDNot Available
Wikipedia Link18-Hydroxycorticosterone
PubChem Compound11222
PDB IDNot Available
ChEBI ID16485
Synthesis ReferenceBoudi, Ahmed; Lemoine, Pascale; Viossat, Bernard; Tomas, Alain; Fiet, Jean; Galons, Herve. A convenient synthesis of 18-hydroxycorticosterone and 18-hydroxy-11-desoxycorticosterone via stereospecific hypoiodination of 20-hydroxysteroids. Tetrahedron (1999), 55(16), 5171-5176.
Material Safety Data Sheet (MSDS)Not Available
General References
  1. Sonino N, Chow D, Levine LS, New MI: Clinical response to metyrapone as indicated by measurement of mineralocorticoids and glucocorticoids in normal children. Clin Endocrinol (Oxf). 1981 Jan;14(1):31-9. [PubMed:7226574 ]
  2. Vecsei P, Abdelhamid S, Mittelstadt GV, Lichtwald K, Haack D, Lewicka S: Aldosterone metabolites and possible aldosterone precursors in hypertension. J Steroid Biochem. 1983 Jul;19(1A):345-51. [PubMed:6887870 ]
  3. Kooner JS, Few JD, Lee CY, Taylor GM, James VH: Investigation of the salivary 18-hydroxycorticosterone:aldosterone ratio in man using a direct assay. J Steroid Biochem Mol Biol. 1991 Mar;38(3):377-82. [PubMed:2009228 ]
  4. Gomez-Sanchez CE, Clore JN, Estep HL, Watlington CO: Effect of chronic adrenocorticotropin stimulation on the excretion of 18-hydroxycortisol and 18-oxocortisol. J Clin Endocrinol Metab. 1988 Aug;67(2):322-6. [PubMed:2839536 ]
  5. Honda M, Tsuchiya M, Tamura H, Watanabe H, Izumi Y, Hatano M, Shiratsuchi T, Den K, Kawaoi A, Okano T: In vivo and in vitro studies on steroid metabolism in a case of primary aldosteronism with multiple lesions of adenoma and nodular hyperplasia. Endocrinol Jpn. 1982 Oct;29(5):529-40. [PubMed:6303762 ]
  6. Vecsei P, Benraad TJ, Hofman J, Abdelhamid S, Haack D, Lichtwald K: Direct radioimmunoassays for "aldosterone" and "18-hydroxycorticosterone" in unprocessed urine, and their use in screening to distinguish primary aldosteronism from hypertension. Clin Chem. 1982 Mar;28(3):453-6. [PubMed:7067086 ]


General function:
Involved in monooxygenase activity
Specific function:
Has steroid 11-beta-hydroxylase activity. In addition to this activity, the 18 or 19-hydroxylation of steroids and the aromatization of androstendione to estrone have also been ascribed to cytochrome P450 XIB.
Gene Name:
Uniprot ID:
Molecular weight:
General function:
Involved in monooxygenase activity
Specific function:
Preferentially catalyzes the conversion of 11-deoxycorticosterone to aldosterone via corticosterone and 18-hydroxycorticosterone.
Gene Name:
Uniprot ID:
Molecular weight:
Corticosterone + reduced adrenal ferredoxin + Oxygen → 18-Hydroxycorticosterone + oxidized adrenal ferredoxin + Waterdetails
Corticosterone + Reduced adrenal ferredoxin + Oxygen → 18-Hydroxycorticosterone + Oxidized adrenal ferredoxin + Waterdetails
18-Hydroxycorticosterone + Reduced adrenal ferredoxin + Oxygen → Aldosterone + Oxidized adrenal ferredoxin + Waterdetails