2. Signaling Pathways
  3. GPCR/G Protein
  4. Leukotriene Receptor

Leukotriene Receptor

Leukotriene Receptor

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Leukotriene Receptor (cys-LTs) are a family of potent bioactive lipids that act through two structurally divergent G protein-coupled receptors, termed the CysLT1 and CysLT2 receptors. The cysteinyl leukotrienes LTC4, LTD4, and LTE4 are important mediators of human bronchial asthma. Leukotriene Receptor is a member of the superfamily of G protein-coupled receptors and uses a phosphatidylinositol-calcium second messenger system. Activation of CysLT1 by LTD4 results in contraction and proliferation of smooth muscle, oedema, eosinophil migration and damage to the mucus layer in the lung. Leukotriene receptor antagonists, called LTRAs for short, are a class of oral medication that is non-steroidal. They may also be referred to as anti-inflammatory bronchoconstriction preventors. LTRAs work by blocking a chemical reaction that can lead to inflammation in the airways.

Leukotriene Receptor Isoform Specific Products:

Leukotriene Receptor Isoform Comparison
Cat. No. Product Name Effect Purity Chemical Structure
  • HY-131471
    Zafirlukast metabolite M1
    		Inhibitor
    Zafirlukast metabolite M1 (compound 15) is an inhibitor of allergic lung diseases such as asthma and can antagonize the activity of leukotrienes.
    Zafirlukast metabolite M1
  • HY-B0174AR
    Olsalazine (Standard)
    		Inhibitor
    Olsalazine (Standard) is the analytical standard of Olsalazine. This product is intended for research and analytical applications. Olsalazine is a potent inhibitor of macrophages chemotaxis to LTB4 with an IC50 value of 0.39 mM, also reduces the synthesis of 5-hydroxyeicosatetraenoic acid (5-HETE), 11-HETE, 12-HETE, and 15-HETE in polymorphonuclear leukocyte (PMNL) and mononuclear cells (MNL). Olsalazine can be used for researching ulcerative colitis. Anti-inflammatory activity[1][2].
    Olsalazine (Standard)
  • HY-121038
    Chamazulene
    		Inhibitor
    Chamazulene, a natural compound, is an antioxidant-type inhibitor of leukotriene B4 formation.
    Chamazulene
  • HY-149083
    LTB4 antagonist 2
    		Antagonist
    LTB4 antagonist 2, a carboxamide-acid compound, is an antagonist of leukotriene B4 (LTB4) with potentially anti-inflammatory activity. LTB4 antagonist 2 shows good affinity for the LTB4 receptor with IC50 of 439 nM.
    LTB4 antagonist 2
  • HY-13315R
    Montelukast sodium (Standard)
    		Antagonist
    Montelukast (sodium) (Standard) is the analytical standard of Montelukast (sodium). This product is intended for research and analytical applications. Montelukast sodium (MK0476) is a potent, selective and orally active antagonist of cysteinyl leukotriene receptor 1 (CysLT1). Montelukast sodium can be used for the reseach of asthma and liver injury. Montelukast sodium also has an antioxidant effect in intestinal ischemia-reperfusion injury, and could reduce cardiac damage. Montelukast sodium decreases eosinophil infiltration into the asthmatic airways. Montelukast sodium can also be used for COVID-19 research.
    Montelukast sodium (Standard)
  • HY-113693
    ONO-RS-347
    		Antagonist
    ONO-RS-347 is an orally active and potent antagonist of leukotriene C4 and D4. ONO-RS-347 inhibits LTD4-induced bronchoconstriction in guinea pigs. ONO-RS-347 is promising for research of allergic asthma and other immediate hypersensitivty diseases.
    ONO-RS-347
  • HY-112532
    REV 5901
    		Antagonist ≥99.0%
    REV 5901 is a competitive and orally active antagonist of leukotriene receptor, with a Ki of 0.7 μM. REV 5901 is also a 5-lipoxygenase inhibitor. REV 5901 can be used for the research of asthma in which leukotriene release be involved. REV 5901 can be used for the study of colon carcinoma.
    REV 5901
  • HY-149084
    LTB4 antagonist 3
    		Antagonist
    LTB4 antagonist 3 (compound 24e) is a leukotriene B4 (LTB4) antagonist with an IC50 value of 477 nM. LTB4 antagonist 3 has anti-inflammatory activity.
    LTB4 antagonist 3
  • HY-130138B
    (5S,6R)-DiHETEs
    		Control
    (5S,6R)-DiHETEs is the isomer of (5S,6R)-DiHETE (HY-130138A). (5S,6R)-DiHETE can be recognized by leukotriene receptors (LTD4 receptors). (5S,6R)-DiHETE can induce guinea pig isolated ileum contraction with an EC50 of 1.3 μM, and this effect can be inhibited by LTD4 receptor antagonists.
    (5S,6R)-DiHETEs
  • HY-155204
    LTB4-IN-2
    		Inhibitor
    LTB4-IN-2 (Comopund 6x) is a Leukotriene B4 (LTB4) inhibitor. LTB4-IN-2 inhibits Leukotriene B4 formation (IC50: 1.15 μM) by selectively targeting 5-Lipoxygenase-activating protein (FLAP). LTB4-IN-2 can be used for anti-inflammatory research.
    LTB4-IN-2
  • HY-100724
    YM-17690
    		Agonist
    YM-17690 is a LTD4 and LTE4 agonist, with a pKi value of 9.28 for [3H]LTD4. It induces dose-dependent contractions in guinea pig ileum, lung parenchyma, and trachea, with EC50 values of 16, 3.9, and 22 nM, respectively. YM-17690 can be used in research related to asthma and inflammation.
    YM-17690
  • HY-N6607R
    Tryptanthrin (Standard)
    		Inhibitor
    Tryptanthrin (Standard) is the analytical standard of Tryptanthrin. This product is intended for research and analytical applications. Tryptanthrin is an indole quinazoline that could be an alkaloid from indigo-bearing plants. Tryptanthrin is a potent and orally active cellular Leukotriene (LT) biosynthesis inhibitor. Tryptanthrin has anticancer activity. Tryptanthrin suppresses the expression levels of NOS1, COX-2, and NF-κB and regulates the expression levels of IL-2, IL-10, and TNF-α.
    Tryptanthrin (Standard)
  • HY-112736
    RG 14893
    		Antagonist
    RG 14893 is a high affinity, competitive, orally active leukotriene B4 receptor antagonist.
    RG 14893
  • HY-107607
    FPL-55712 free base
    		Antagonist
    FPL-55712 free base is a leukotriene receptor antagonist. FPL-55712 free base is also an antagonist of slow reacting substance of anaphylaxis (SRS-A). FPL-55712 free base inhibits leukotriene-induced bronchoconstriction.
    FPL-55712 free base
  • HY-116326
    BayCysLT2
    		Antagonist
    BayCysLT2, an isophthalic acid derivative, is a selective and potent cysteinyl leukotriene 2 (CysLT2) receptor antagonist with an IC50 value of 53 nM. BayCysLT2 inhibits calcium mobilization induced by leukotriene D4 in HEK293 cells expressing human CysLT2 receptors. BayCysLT2 reverses LTC4-induced increases in coronary artery perfusion pressure and decreases in contractility in isolated perfused guinea pig hearts.
    BayCysLT2
  • HY-120571
    L-674573
    		Inhibitor 99.54%
    L-674573 is a quinoline leukotriene synthesis inhibitor, inhibiting Calcimycin (HY-N6687)- and N-Formyl-Met-Leu-Phe (HY-P0224)-induced leukotriene production with IC50s of 100 nM and 50 nM, respectively. L-674573 selectively inhibits Calcimycin- and N-Formyl-Met-Leu-Phe-induced 5-lipoxygenase translocation.
    L-674573
  • HY-118958
    Ablukast
    		Antagonist 99.36%
    Ablukast (Ro 23-3544) is a specific and active leukotriene receptor antagonist. Ablukast effectively reduces LTC4- and antigen-induced bronchoconstriction. Ablukast is LTD4 receptor antagonist.
    Ablukast
  • HY-106785
    Pobilukast
    		Antagonist
    Pobilukast is a classical CysLT1 receptor antagonist. Pobilukast can be used for the research of asthma.
    Pobilukast
  • HY-14165A
    (S)-Veliflapon
    		Inhibitor 99.44%
    (S)-Veliflapon ((S)-BAY X 1005) is an orally active inhibitor of leukotriene biosynthesis and 5-lipoxygenase activating protein (FLAP). (S)-Veliflapon inhibits the formation of leukotriene B4 (LTB4) in rat, mouse and human leukocytes with IC50 values of 0.026 µM, 0.039 µM and 0.22 µM respectively. (S)-Veliflapon showes enantioselectivity in human whole blood.
    (S)-Veliflapon
  • HY-B0290S1
    Pranlukast-d4
    		Antagonist
    Pranlukast-d4 is deuterium labeled Pranlukast. Pranlukast is a highly potent, selective and competitive antagonist of peptide leukotrienes. Pranlukast inhibits [3H]LTE4, [3H]LTD4, and [3H]LTC4 bindings to lung membranes with Kis of 0.63±0.11, 0.99±0.19, and 5640±680 nM, respectively.
    Pranlukast-d<sub>4</sub>
Cat. No. Product Name / Synonyms Application Reactivity
Leukotriene Receptor Isoform Comparison

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