| Identification | Back Directory |  [Name]
  5,8,11-EICOSATRIYNOIC ACID |  [CAS]
  13488-22-7 |  [Synonyms]
  ETI EICOSATRIYNOIC ACID 5,8,11-Icosatriynoic acid 5,8,11-EICOSATRIYNOIC ACID Icosa-5,8,11-triynoic acid OWYNLPMPYBYKJP-UHFFFAOYSA-N 5,8,11-EICOSATRIYNOIC ACID Basic information 5,8,11-EICOSATRIYNOIC ACID ISO 9001:2015 REACH |  [EINECS(EC#)]
  200-533-0 |  [Molecular Formula]
  C20H28O2 |  [MDL Number]
  MFCD00077343 |  [MOL File]
  13488-22-7.mol |  [Molecular Weight]
  300.44 |  
 | Chemical Properties | Back Directory |  [Melting point ]
  70.5-71.5 °C |  [Boiling point ]
  473.8±40.0 °C(Predicted) |  [density ]
  0.990±0.06 g/cm3(Predicted) |  [storage temp. ]
  −20°C 
 |  [solubility ]
  Chloroform (Slightly), Methanol (Slightly) |  [form ]
  Off-white solid. |  [pka]
  4.61±0.10(Predicted) |  [color ]
  Pale Yellow to Pale Beige |  [Stability:]
  Light Sensitive |  
 | Hazard Information | Back Directory |  [Uses]
  ETI is a leukotriene antagonist and selective 5-LO (5-lipoxygenase) inhibitor. |  [Definition]
  ChEBI: A C20 polyunsaturated fatty acid having three triple bonds in the 5-, 8- and 11-positions. |  [Biological Activity]
  5,8,11-eicosatriynoic acid is a selective inhibitor of lipoxygenases with id50 values of 24 μm and 340 μm for n-8 lipoxygenase and fatty acid cycle-oxygenase , respectively[1][2].fatty acid cycle-oxygenase and n-8 lipoxygenase catalyze the initial reactions which lead to the formation of three major arachidonic acid metabolites in human platelets. in several tissues, these two enzymes act concomitantly on arachidonic acid [1].5,8,11-eicosatriynoic acid (5,8,11-et) is a selective inhibitor of lipoxygenases with id50 values of 24 μm and 340 μm for n-8 lipoxygenase and fatty acid cycle-oxygenase, respectively. 5,8,11-eicosatriynoic acid was useful for studies on physiological and pathophysiological roles of 12 l-hydroxy-5,8,10,14-eicosatetraenoic acid formation in various tissues [1]. in mouse mastocytoma cells, 5,8,11-eicosatriynoic acid inhibited a23187 and l-cysteine induced leukotriene c (ltc4) biosynthesis with id50 value of 5 μm [2]. |  [References]
  [1].  hammarstrm s. selective inhibition of platelet n-8 lipoxygenase by 5,8,11-eicosatriynoic acid. biochim biophys acta. 1977 jun 22;487(3):517-9.  [2].  orning l, hammarstrm s. inhibition of leukotriene c and leukotriene d biosynthesis. j biol chem. 1980 sep 10;255(17):8023-6. |  
  
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