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Record Information
StatusExpected but not Quantified
Creation Date2009-07-25 00:02:47 UTC
Update Date2017-12-07 02:38:11 UTC
Secondary Accession Numbers
  • HMDB12552
Metabolite Identification
Common Name12-Oxo-20-hydroxy-leukotriene B4
Description12-oxo-20-hydroxy-leukotriene B4 is the metabolite of lipid omega-oxidation of leukotriene B4 (LTB4). LTB4 is the major metabolite in neutrophil polymorphonuclear leukocytes. Omega-oxidation is the major pathway for the catabolism of leukotriene B4 in human polymorphonuclear leukocytes. Leukotrienes are metabolites of arachidonic acid derived from the action of 5-LO (5-lipoxygenase). The immediate product of 5-LO is LTA4 (leukotriene A4), which is enzymatically converted into either LTB4 (leukotriene B4) by LTA4 hydrolase or LTC4 (leukotriene C4) by LTC4 synthase. The regulation of leukotriene production occurs at various levels, including expression of 5-LO, translocation of 5-LO to the perinuclear region and phosphorylation to either enhance or inhibit the activity of 5-LO. Biologically active LTB4 is metabolized by w-oxidation carried out by specific cytochrome P450s (CYP4F) followed by beta-oxidation from the w-carboxy position and after CoA ester formation. (PMID: 7649996 , 17623009 , 2853166 , 6088485 ). Leukotrienes are eicosanoids. The eicosanoids consist of the prostaglandins (PGs), thromboxanes (TXs), leukotrienes (LTs) and lipoxins (LXs). The PGs and TXs are collectively identified as prostanoids. Prostaglandins were originally shown to be synthesized in the prostate gland, thromboxanes from platelets (thrombocytes) and leukotrienes from leukocytes, hence the derivation of their names. All mammalian cells except erythrocytes synthesize eicosanoids. These molecules are extremely potent, able to cause profound physiological effects at very dilute concentrations. All eicosanoids function locally at the site of synthesis, through receptor-mediated G-protein linked signaling pathways.
(5S,20)-Dihydroxy-12-keto-(6Z,8E,10E,14Z)-eicosatetraenoic acidHMDB
(5S,20)-Dihydroxy-12-oxo-(6Z,8E,10E,14Z)-eicosatetraenoic acidHMDB
12-keto-20-Hydroxy-leukotriene b(,4)HMDB
Chemical FormulaC20H30O5
Average Molecular Weight350.4492
Monoisotopic Molecular Weight350.20932407
IUPAC Name(5R,6Z,8E,10E,14Z)-5,20-dihydroxy-12-oxoicosa-6,8,10,14-tetraenoic acid
Traditional Name(5R,6Z,8E,10E,14Z)-5,20-dihydroxy-12-oxoicosa-6,8,10,14-tetraenoic acid
CAS Registry NumberNot Available
InChI Identifier
Chemical Taxonomy
DescriptionThis compound belongs to the class of organic compounds known as leukotrienes. These are eicosanoids containing a hydroxyl group attached to the aliphatic chain of an arachidonic acid. Leukotrienes have four double bonds, three (and only three) of which are conjugated.
KingdomOrganic compounds
Super ClassLipids and lipid-like molecules
ClassFatty Acyls
Sub ClassEicosanoids
Direct ParentLeukotrienes
Alternative Parents
  • Leukotriene
  • Hydroxyeicosatetraenoic acid
  • Long-chain fatty acid
  • Hydroxy fatty acid
  • Keto fatty acid
  • Fatty acid
  • Unsaturated fatty acid
  • Acryloyl-group
  • Enone
  • Alpha,beta-unsaturated ketone
  • Secondary alcohol
  • Ketone
  • Carboxylic acid
  • Carboxylic acid derivative
  • Monocarboxylic acid or derivatives
  • Alcohol
  • Primary alcohol
  • Organic oxygen compound
  • Hydrocarbon derivative
  • Organic oxide
  • Carbonyl group
  • Organooxygen compound
  • Aliphatic acyclic compound
Molecular FrameworkAliphatic acyclic compounds
External DescriptorsNot Available

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  Cell and elements:



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Route of exposure:




Naturally occurring process:

  Biological process:

    Cellular process:

    Biochemical pathway:

    Chemical reaction:

    Biochemical process:


Industrial application:

Biological role:

Physical Properties
Experimental Properties
Melting PointNot AvailableNot Available
Boiling PointNot AvailableNot Available
Water SolubilityNot AvailableNot Available
LogPNot AvailableNot Available
Predicted Properties
Water Solubility0.027 g/LALOGPS
pKa (Strongest Acidic)4.65ChemAxon
pKa (Strongest Basic)-1.4ChemAxon
Physiological Charge-1ChemAxon
Hydrogen Acceptor Count5ChemAxon
Hydrogen Donor Count3ChemAxon
Polar Surface Area94.83 ŲChemAxon
Rotatable Bond Count15ChemAxon
Refractivity104.02 m³·mol⁻¹ChemAxon
Polarizability39.84 ųChemAxon
Number of Rings0ChemAxon
Rule of FiveYesChemAxon
Ghose FilterYesChemAxon
Veber's RuleYesChemAxon
MDDR-like RuleYesChemAxon
Spectrum TypeDescriptionSplash Key
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (Non-derivatized) - 70eV, Positivesplash10-001i-4496000000-330b9536066c0e39a525View in MoNA
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (3 TMS) - 70eV, Positivesplash10-0ufr-7020970000-6960ae6f29e8dbf783f7View in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Positivesplash10-00lr-0019000000-7e829671aaaf5a7306b7View in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Positivesplash10-0159-1489000000-81410cfef5a26d2948fdView in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Positivesplash10-00y3-7391000000-8808f7bc5690a3728c42View in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Negativesplash10-000t-0009000000-96930ce14dbf69762752View in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Negativesplash10-0f8a-1239000000-18615dcda9fe2a7b1160View in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Negativesplash10-0a4l-9441000000-404df4ce49b0bb715d4fView in MoNA
Biological Properties
Cellular Locations
  • Extracellular
  • Membrane
Biofluid LocationsNot Available
Tissue LocationNot Available
PathwaysNot Available
Normal Concentrations
Not Available
Abnormal Concentrations
Not Available
Associated Disorders and Diseases
Disease ReferencesNone
Associated OMIM IDsNone
DrugBank IDNot Available
Phenol Explorer Compound IDNot Available
FoodDB IDFDB029119
KNApSAcK IDNot Available
Chemspider IDNot Available
KEGG Compound IDNot Available
BioCyc IDNot Available
BiGG IDNot Available
Wikipedia LinkNot Available
METLIN IDNot Available
PubChem Compound53481459
PDB IDNot Available
ChEBI IDNot Available
Synthesis ReferenceNot Available
Material Safety Data Sheet (MSDS)Not Available
General References
  1. Wheelan P, Murphy RC: Metabolism of 6-trans-isomers of leukotriene B4 in cultured hepatoma cells and in human polymorphonuclear leukocytes. Identification of a delta 6-reductase metabolic pathway. J Biol Chem. 1995 Aug 25;270(34):19845-52. [PubMed:7649996 ]
  2. Murphy RC, Gijon MA: Biosynthesis and metabolism of leukotrienes. Biochem J. 2007 Aug 1;405(3):379-95. [PubMed:17623009 ]
  3. Mita H, Yui Y, Yasueda H, Shida T: Isocratic determination of arachidonic acid 5-lipoxygenase products in human neutrophils by high-performance liquid chromatography. J Chromatogr. 1988 Sep 9;430(2):299-308. [PubMed:2853166 ]
  4. Shak S, Goldstein IM: Omega-oxidation is the major pathway for the catabolism of leukotriene B4 in human polymorphonuclear leukocytes. J Biol Chem. 1984 Aug 25;259(16):10181-7. [PubMed:6088485 ]
  5. Simons K, Toomre D: Lipid rafts and signal transduction. Nat Rev Mol Cell Biol. 2000 Oct;1(1):31-9. [PubMed:11413487 ]
  6. Watson AD: Thematic review series: systems biology approaches to metabolic and cardiovascular disorders. Lipidomics: a global approach to lipid analysis in biological systems. J Lipid Res. 2006 Oct;47(10):2101-11. Epub 2006 Aug 10. [PubMed:16902246 ]
  7. Sethi JK, Vidal-Puig AJ: Thematic review series: adipocyte biology. Adipose tissue function and plasticity orchestrate nutritional adaptation. J Lipid Res. 2007 Jun;48(6):1253-62. Epub 2007 Mar 20. [PubMed:17374880 ]
  8. Lingwood D, Simons K: Lipid rafts as a membrane-organizing principle. Science. 2010 Jan 1;327(5961):46-50. doi: 10.1126/science.1174621. [PubMed:20044567 ]
  9. Gunstone, Frank D., John L. Harwood, and Albert J. Dijkstra (2007). The lipid handbook with CD-ROM. CRC Press.