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Record Information
StatusDetected and Quantified
Creation Date2006-10-25 12:50:12 UTC
Update Date2019-07-23 05:46:44 UTC
Secondary Accession Numbers
  • HMDB0010218
  • HMDB05087
  • HMDB10218
Metabolite Identification
Common Name6-trans-Leukotriene B4
Description6-trans-Leukotriene B4 is an enzymatic metabolite of leukotriene B4(LTB4). A greater increase in LTB4 and 6-trans-LTB4 (one of its hydroxylated 5-lipoxygenase metabolic derivatives) occurs after stimulation with calcium-ionophore in asthma patients compared to healthy controls. LTB4 is the major metabolite in neutrophil 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 omega-oxidation carried out by specific cytochrome P450s (CYP4F) followed by beta-oxidation from the w-carboxy position and after CoA ester formation (PMID: 17623009 , 2176862 , 7649996 , 9667737 , 2125732 ). 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 signalling pathways.
(5S,6E,8E,10E,12R,14Z)-5,12-Dihydroxyeicosa-6,8,10,14-tetraenoic acidChEBI
(6E,5S,12R)-Leukotriene b4ChEBI
5(S),12(R)-Dihydroxy-6,8,10,14-(trans,trans,trans,cis)-eicosatetraenoic acidChEBI
5S,12R-Dihydroxy-6E,8E,10E,14Z-eicosatetraenoic acidChEBI
5S,12R-Dihydroxy-6E,8E,10E,14Z-icosatetraenoic acidChEBI
Delta(6)-trans-Leukotriene b4ChEBI
Delta(6)-trans-LT b4ChEBI
Δ(6)-trans-leukotriene b4Generator
Δ(6)-trans-LT b4Generator
D6-trans-Leukotriene b4HMDB
[S-[R*,s*-(e,e,e,Z)]]-5,12-dihydroxy-6,8,10,14-eicosatetraenoic acidHMDB
6-trans-Leukotriene B4HMDB
delta6-trans-Leukotriene B4HMDB
Δ6-trans-Leukotriene B4HMDB
Chemical FormulaC20H32O4
Average Molecular Weight336.4657
Monoisotopic Molecular Weight336.230059512
IUPAC Name(5S,6E,8E,10E,12R,14Z)-5,12-dihydroxyicosa-6,8,10,14-tetraenoic acid
Traditional Name6-trans-LTB4
CAS Registry Number71652-82-9
InChI Identifier
Chemical Taxonomy
Description 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
  • Fatty acid
  • Unsaturated fatty acid
  • Secondary alcohol
  • Monocarboxylic acid or derivatives
  • Carboxylic acid
  • Carboxylic acid derivative
  • Organooxygen compound
  • Alcohol
  • Hydrocarbon derivative
  • Organic oxide
  • Organic oxygen compound
  • Carbonyl group
  • Aliphatic acyclic compound
Molecular FrameworkAliphatic acyclic compounds
External Descriptors

Route of exposure:


Biological location:


Naturally occurring process:


Industrial application:

Biological role:

Physical Properties
Experimental Properties
Melting PointNot AvailableNot Available
Boiling PointNot AvailableNot Available
Water SolubilityNot AvailableNot Available
LogP3.58Not Available
Predicted Properties
Water Solubility0.015 g/LALOGPS
pKa (Strongest Acidic)4.65ChemAxon
pKa (Strongest Basic)-1.3ChemAxon
Physiological Charge-1ChemAxon
Hydrogen Acceptor Count4ChemAxon
Hydrogen Donor Count3ChemAxon
Polar Surface Area77.76 ŲChemAxon
Rotatable Bond Count14ChemAxon
Refractivity102.98 m³·mol⁻¹ChemAxon
Polarizability40.59 ųChemAxon
Number of Rings0ChemAxon
Rule of FiveYesChemAxon
Ghose FilterYesChemAxon
Veber's RuleYesChemAxon
MDDR-like RuleYesChemAxon
Spectrum TypeDescriptionSplash KeyView
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (Non-derivatized) - 70eV, Positivesplash10-066r-7896000000-782d01776a33cc451555JSpectraViewer | MoNA
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (3 TMS) - 70eV, Positivesplash10-01rl-9113530000-205b0d713aeb42a9afc2JSpectraViewer | MoNA
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-QIT , negativesplash10-000i-0419000000-061132d646cd5dd85a1bJSpectraViewer | MoNA
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-QIT , negativesplash10-00ks-0829000000-7da7ab59ee0d4812767bJSpectraViewer | MoNA
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-QIT , negativesplash10-0002-0933000000-3fb381ce0f3609a90222JSpectraViewer | MoNA
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-QIT , negativesplash10-0udj-0931000000-ccfdaa3226146fe9edc3JSpectraViewer | MoNA
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-QIT , negativesplash10-0udj-1940000000-ef988be204f5c54f4b21JSpectraViewer | MoNA
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-QIT , negativesplash10-0r00-1910000000-e16cc958487f06dc4287JSpectraViewer | MoNA
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-QIT , negativesplash10-0006-6900000000-a356f0334bf220eb54ccJSpectraViewer | MoNA
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-QIT , negativesplash10-052f-9700000000-66a6a217eba63b4874d1JSpectraViewer | MoNA
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-QIT , negativesplash10-0a4l-7900000000-aeb350579ea4a84117d0JSpectraViewer | MoNA
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-QQ , negativesplash10-000i-0619000000-dc49d3f4ab097db18f18JSpectraViewer | MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Positivesplash10-0gb9-0019000000-69c64ad7b55da6a633e1JSpectraViewer | MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Positivesplash10-0v4i-5598000000-0a1483f60114546ce2c7JSpectraViewer | MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Positivesplash10-052f-9550000000-0ad5f1d400a5ff275f25JSpectraViewer | MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Negativesplash10-00kr-0029000000-0164a507a03180713a2eJSpectraViewer | MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Negativesplash10-014r-2269000000-52f6b9d4ecc4e26ff1feJSpectraViewer | MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Negativesplash10-0a4l-9340000000-c2e72464c072384447e0JSpectraViewer | MoNA
Biological Properties
Cellular Locations
  • Extracellular
  • Membrane
Biospecimen Locations
  • Blood
Tissue LocationsNot Available
Normal Concentrations
BloodDetected and Quantified0.00011 +/- 0.00003 uMAdult (>18 years old)BothNormal details
BloodDetected and Quantified0.000223 +/- 0.000042 uMAdult (>18 years old)Not Specified
BloodDetected and Quantified0.000223 +/- 0.000042 uMAdult (>18 years old)Both
BloodDetected and Quantified<0.0001 uMAdult (>18 years old)Both
Abnormal Concentrations
Not Available
Associated Disorders and Diseases
Disease ReferencesNone
Associated OMIM IDsNone
DrugBank IDNot Available
Phenol Explorer Compound IDNot Available
FoodDB IDFDB022416
KNApSAcK IDNot Available
Chemspider ID4446252
KEGG Compound IDNot Available
BioCyc IDNot Available
BiGG IDNot Available
Wikipedia LinkLeukotriene B4
METLIN IDNot Available
PubChem Compound5283128
PDB IDNot Available
ChEBI ID63981
Synthesis ReferenceNot Available
Material Safety Data Sheet (MSDS)Not Available
General References
  1. Murphy RC, Gijon MA: Biosynthesis and metabolism of leukotrienes. Biochem J. 2007 Aug 1;405(3):379-95. [PubMed:17623009 ]
  2. Wainwright S, Falck JR, Yadagiri P, Powell WS: Metabolism of 12(S)-hydroxy-5,8,10,14-eicosatetraenoic acid and other hydroxylated fatty acids by the reductase pathway in porcine polymorphonuclear leukocytes. Biochemistry. 1990 Oct 30;29(43):10126-35. [PubMed:2176862 ]
  3. 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 ]
  4. Primiano T, Li Y, Kensler TW, Trush MA, Sutter TR: Identification of dithiolethione-inducible gene-1 as a leukotriene B4 12-hydroxydehydrogenase: implications for chemoprevention. Carcinogenesis. 1998 Jun;19(6):999-1005. [PubMed:9667737 ]
  5. Radeau T, Chavis C, Damon M, Michel FB, Crastes de Paulet A, Godard PH: Enhanced arachidonic acid metabolism and human neutrophil migration in asthma. Prostaglandins Leukot Essent Fatty Acids. 1990 Oct;41(2):131-8. [PubMed:2125732 ]