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Picture of (2R)-2-(2-chlorophenyl)-2-(methylamino)cyclohexan-1-one


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Origin: China

CasNo: 33643-49-1

specification: 99%min

Min order Quantity: 1 /kg

Supply Ability: 100 mt/month

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    CAS No.: 33643-49-1 Formula: C13H16ClNO Molecular Weight: 237.72500


    Arketamine, also (R)-ketamine or (R)-(−)-ketamine, is the (R)-(−) enantiomer of ketamine. Similarly to racemic ketamine and esketamine, the S(+) enantiomer of ketamine, arketamine is biologically active; however, it is less potent as an NMDA receptor antagonist and anesthetic and thus has never been approved or marketed for clinical use as an enantiopure drug. On the other hand, it appears to be more effective as an antidepressant.
    Relative to esketamine, arketamine possesses 4–5 times lower affinity for the PCP site of the NMDA receptor. In accordance, arketamine is significantly less potent than racemic ketamine and especially esketamine in terms of anesthetic, analgesic, and sedative-hypnotic effects. Racemic ketamine has weak affinity for the sigma receptor, where it acts as an agonist, whereas esketamine binds negligibly to this receptor, and so the sigma receptor activity of racemic ketamine lies in arketamine. It has been suggested that this action of arketamine may play a role in the hallucinogenic effects of racemic ketamine and that it may be responsible for the lowering of the seizure threshold seen with racemic ketamine. Esketamine inhibits the dopamine transporter about 8-fold more potently than does arketamine, and so is about 8 times more potent as a dopamine reuptake inhibitor. Arketamine and esketamine possess similar potency for interaction with the muscarinic acetylcholine receptors.
    Paradoxically, arketamine shows greater and longer-lasting rapid antidepressant effects in animal models of depression relative to esketamine. It has been suggested that this difference may have due to with the possibility of different activity of arketamine and esketamine and their respective metabolites at the α7-nicotinic receptor, as norketamine and hydroxynorketamine are potent antagonists of this receptor and markers of potential rapid antidepressant effects (specifically, increased mammalian target of rapamycin function) correlate closely with their affinity for it. The picture is unclear however, and other mechanisms have also been implicated.; In rodent studies, esketamine produced hyperlocomotion, prepulse inhibition deficits, and rewarding effects, while arketamine did not, in accordance with its lower potency as an NMDA receptor antagonist and dopamine reuptake inhibitor. As such, arketamine may have a lower propensity for producing psychotomimetic effects and a lower abuse potential in addition to superior antidepressant efficacy.

    Basic Info

    Chemical Name (2R)-2-(2-chlorophenyl)-2-(methylamino)cyclohexan-1-one


    CAS No. 33643-49-1
    Molecular Formula C13H16ClNO
    Molecular Weight 237.72500
    PSA 29.10000
    LogP 3.28870


    Density 1.17g/cm3
    Boiling Point 363.8ºC at 760mmHg
    Flash Point 173.8ºC
    Refractive Index 1.562

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