Clinical data | |
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Other names | TAK-925 |
Routes of administration | Intravenous [1] [2] |
Drug class | Orexin receptor agonist |
Pharmacokinetic data | |
Elimination half-life | ~3.3 - 5.1h |
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CAS Number | |
PubChem CID | |
ChemSpider | |
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ChEMBL | |
PDB ligand | |
CompTox Dashboard (EPA) | |
Chemical and physical data | |
Formula | C21H32N2O5S |
Molar mass | 424.56 g·mol−1 |
3D model (JSmol) | |
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Danavorexton (developmental code name TAK-925) is a selective orexin 2 receptor agonist. [1] It is a small-molecule compound and is administered intravenously. [1] [2] The compound was found to dose-dependently produce wakefulness to a similar degree as modafinil in a phase 1 clinical trial. [1] [3] As of March 2021, danavorexton is under development for the treatment of narcolepsy, idiopathic hypersomnia, and sleep apnea. [2] [1] [4] It is related to another orexin receptor agonist, firazorexton (TAK-994), the development of which was discontinued for safety reasons in October 2021. [1] [5]
SB-649868 is a dual orexin receptor antagonist that was being developed by GlaxoSmithKline as a treatment for insomnia.
The orexin receptor (also referred to as the hypocretin receptor) is a G-protein-coupled receptor that binds the neuropeptide orexin. There are two variants, OX1 and OX2, each encoded by a different gene (HCRTR1, HCRTR2).
Orexin receptor type 2 (Ox2R or OX2), also known as hypocretin receptor type 2 (HcrtR2), is a protein that in humans is encoded by the HCRTR2 gene. It should not be confused for the protein CD200R1 which shares the alias OX2R but is a distinct, unrelated gene located on the human chromosome 3.
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Suvorexant, sold under the brand name Belsomra, is an orexin antagonist medication which is used in the treatment of insomnia. It is indicated specifically for the treatment of insomnia characterized by difficulties with sleep onset and/or maintenance in adults. Suvorexant helps with falling asleep faster, sleeping longer, being awake less in the middle of the night, and having better quality of sleep. Its effectiveness is modest, and is similar to that of other orexin antagonists, but is lower than that of benzodiazepines and Z-drugs. Suvorexant is taken by mouth.
An orexin receptor antagonist, or orexin antagonist, is a drug that inhibits the effect of orexin by acting as a receptor antagonist of one (selective orexin receptor antagonist or SORA) or both (dual orexin receptor antagonis or DORA) of the orexin receptors, OX1 and OX2. Medical applications include treatment of sleep disorders such as insomnia.
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Suntinorexton (INNTooltip International Nonproprietary Name; developmental code name TAK-861) is an experimental orexin receptor agonist. It acts as a selective agonist of the orexin OX2 receptor and was described in 2019 in a patent by Takeda Pharmaceutical Company. Suntinorexton has superseded danavorexton (TAK-925) and firazorexton (TAK-994) as a clinical drug candidate owing to toxicity of these agents. The drug has reached phase 3 clinical trials as of 2024. It is orally active and centrally penetrant.
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