Leukotrienes

Leukotriene D4 is a potent bronchoconstrictor. Leukotriene D4 has the potential for the research of asthma. Leukotriene D4 induces edema and increases capillary permeability.

Leukotriene B4 (LTB4) is known as one of the most potent chemoattractants and activators of leukocytes and is involved in inflammatory diseases. Leukotriene B4 is also an alkyl chain-based PROTAC linker that can be used in the synthesis of PROTACs.

Leukotriene C4 is a eicosanoid lipid mediator and produced by immune cells during type 2 inflammation. Leukotriene C4 can mediate inflammation,allergy, bronchoconstriction, and vascular leakage.

Leukotriene E4 (LTE4) is produced by the action of dipeptidase on LTD4. Leukotriene E4 is one of the constituents of slow-reacting substance of anaphylaxis (SRS-A). Leukotriene E4 accumulates in both plasma and urine and urinary excretion of Leukotriene E4 is most often used as an indicator of asthma.

20-Carboxy-Leukotriene B4 (20-COOH LTB4) is a metabolite of Leukotriene B4 (LTB4; HY-107608). 20-Carboxy-Leukotriene B4 binds to the BLT1 receptor with high affinity. 20-Carboxy-Leukotriene B4 inhibits LTB4-mediated neutrophil responses (migration, degranulation, leukotriene biosynthesis).

Eoxin A4 (14,15-Leukotriene A4) is an Arachidonic acid (HY-109590) metabolite. Eoxin A4 forms via the 15-lipoxygenase pathway.

14,15-Leukotriene C4 (Eoxin C4) is a Leukotriene compound produced by the enzymatic reaction of arachidonic acid. 14,15-Leukotriene C4 has the activity of promoting inflammatory response. 14,15-Leukotriene C4 can increase the permeability of blood vessels, causing fluid and white blood cells to leak out of the blood vessels, which increases the number of inflammatory cells in the tissue. 14,15-Leukotriene C4 can be used in studies of asthma and other inflammatory diseases.

20-Hydroxyleukotriene E4 (20-Hydroxy-LTE4) is a nucleoside metabolite.

14,15-Leukotriene D4 (14,15-LTD4) is a leukotriene that producted by eosinophils with Arachidonic acid (HY-109590), and through the 15-lipoxygenase-1 pathway.

14,15-Dehydro Leukotriene B4 (Compound 4) is a LTB4 receptor antagonist. 14,15-Dehydro Leukotriene B4 also has a higher binding affinity for BLT1 with a K_i value of 27 nM and BLT2 with a K_i value of 473 nM. 14,15-Dehydro Leukotriene B4 inhibits LTB4-induced release of lysozymes from rat polymorphonuclear leukoctyes with an IC₅₀ value of 1 µM.

5(S),12(S)-Leukotriene B4 (5(S),12(S)-LTB4; 5(S),12(S)-DiHETE) is a stereochemical isomer of LTB4 (HY-107608).

11-trans Leukotriene D4 (11-trans LTD4) is a C-11 double bond isomer of LTD4. LTD4 undergoes slow temperature-dependent isomerization to 11-trans LTD4 during storage. 11-trans LTD4 retains about 10-25 % of the potency for contraction of guinea pig ileum, trachea and parenchyma compared to LTD4. It exhibits an ED50 ranging between 12-60 nM for contraction of guinea pig trachea.

18-Carboxy dinor Leukotriene B4 (18-carboxy dinor LTB4) is a β-oxidation metabolite of LTB4. In the liver, LTB4 is rapidly metabolized to 20-carboxy LTB4, which then undergoes β-oxidation to 18-carboxy dinor LTB4.

Leukotriene B5 (LTB5) is a leukotriene with diverse biological activities. It is a metabolite of eicosapentaenoic acid formed through the 5-lipoxygenase (5-LO) pathway. LTB5 increases contraction of bullfrog lung strips ex vivo in a concentration-dependent manner. In vivo, LTB5 (100 nM) reduces tumor volume in mice injected with Tm1 murine melanoma cells. LTB5 also elicits chemokinesis and lysosomal enzyme release from polymorphonuclear leukocytes (PMNLs) 20- to 30-fold less, and induces platelet aggregation 8-fold less, potently than LTB4.

Leukotriene B4 dimethyl amide, an immunomodulator, stimulates contraction of isolated guinea pig lung entities. Leukotriene B4 (LTB(4)) also stimulates human neutrophil migration, and LTB(4) antagonists may have anti-inflammatory activity in inflammatory pathophysiology.

11-trans-Leukotriene C4 is trans-Leukotriene C4 (LTC4). LTC4 is an important inflammatory mediator and regulator of allergic responses.

12-epi-LTB4 is an agonist for BLT1 and BLT2. 12-epi LTB4 exhibits a partial agonistic activity against mBLT1 and mBLT2, and induces phosphorylation of extracellular signal-regulated kinase in primary mouse keratinocytes.

Leukotriene B4 ethanolamide (LTB4 ethanolamide) is an antagonist and a partial agonist for Leukotriene B4 (LTB4) receptor 1 (BLTR1). Leukotriene B4 ethanolamide ameliorates the tumor progression, which is only asscociated with inflammation.

N-Acetyl-Leukotriene E4 (N-Acetyl-LTE4) is a metabolite of Leukotriene E4 (LTE4) (HY-113465), which is detected in bile and urine. N-Acetyl-Leukotriene E4 produces a vasoconstriction in the mesenteric vessels which led to reduction of blood flow to the gut.

12-Oxo-leukotriene B4 (12-Oxo-LTB4) is an intermediate in the lipoxygenase-catalyzed path of Arachidonic acid (HY-109590) metabolism. 12-Oxo-leukotriene B4 is crucial in Leukotriene B4 metabolism and is involved in inflammation reactions. 12-Oxo-leukotriene B4 stimulates calcium levels in human neutrophils with an EC₅₀ of 33 nM. 12-Oxo-leukotriene B4 induces migration of neutrophils with EC₅₀ of 170 nM.