Ramelteon(Synonyms: 雷美替胺; TAK-375)

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Ramelteon (Synonyms: 雷美替胺; TAK-375) 纯度: 99.83%

Ramelteon 是一种强效、高选择性和具有口服活性的 MT1/MT2 激动剂，Ki 值分别为 14 和 112 pM。Ramelteon 具有研究失眠症的潜力。Ramelteon长期使用持续减少睡眠发作，停药后无翌日晨残留效应或反弹性失眠或戒断症状。

Ramelteon(Synonyms: 雷美替胺; TAK-375)

Ramelteon Chemical Structure

CAS No. : 196597-26-9

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10 mM * 1 mL in DMSO ￥998 In-stock
2 mg ￥700 In-stock
5 mg ￥900 In-stock
10 mg ￥1200 In-stock
50 mg ￥2600 In-stock
100 mg ￥4700 In-stock
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生物活性

Ramelteon is a potent, highly selective, and orally active agonist of MT1/MT2 with Ki values of 14 and 112 pM, respectively. Ramelteon has the potential for the research of insomnia. Ramelteon consistently reduces sleep onset after long-term treatment, with no next-morning residual effects or rebound insomnia or withdrawal symptoms upon discontinuation[1][2].

IC50 & Target

MT1, MT2[1]
体内研究
(In Vivo)

Ramelteon (p.o.; 0.1 and 1 mg/kg) accelerates reentrainment of running wheel activity rhythm to the new lightdark cycle[3].
Ramelteon (p.o.; 3, 10, and 30 mg/kg) does not affect learning or memory in rats tested by the water maze task and the delayed match to position task, implying that MT1/MT2 receptor agonists have no abuse potential[3].
Ramelteon (0.0001, 0.001, 0.01, and 0.1 mg/kg; p.o.; 8 hours) significantly decreases wakefulness at doses of 0.001, 0.01, and 0.1 mg/kg, increases slow-wave sleep at doses of 0.001, 0.01, and 0.1 mg/kg, and increases rapid eye movement sleep at a dose of 0.1 mg/kg[4].

上海金畔生物科技有限公司 has not independently confirmed the accuracy of these methods. They are for reference only.

Animal Model: Male Wistar or Fischer 344 (F344) rats[3]
Dosage: 0.1 and 1 mg/kg; 3, 10, and 30 mg/kg
Administration: p.o.
Result: Accelerated reentrainment of running wheel activity rhythm to the new lightdark cycle. Ramelteon did not affect learning or memory in rats tested by the water maze task and the delayed match to position task, implying that MT1/MT2 receptor agonists have no abuse potential.
Animal Model: Adult cats (2.5-6.1 kg)[4]
Dosage: 0.0001, 0.001, 0.01, and 0.1 mg/kg
Administration: p.o.; 8 hours
Result: Significantly decreased wakefulness at doses of 0.001, 0.01, and 0.1 mg/kg, increased slow-wave sleep at doses of 0.001, 0.01, and 0.1 mg/kg, and increased rapid eye movement sleep at a dose of 0.1 mg/kg.

Clinical Trial

分子量

259.34

Formula

C16H21NO2
CAS 号

196597-26-9
中文名称

雷美替胺；瑞美替昂；拉米替隆；雷美尔通；瑞美替胺
运输条件

Room temperature in continental US; may vary elsewhere.
储存方式
Powder -20°C 3 years
4°C 2 years
In solvent -80°C 6 months
-20°C 1 month
溶解性数据
In Vitro: 

DMSO : ≥ 50 mg/mL (192.80 mM)

* “≥” means soluble, but saturation unknown.

配制储备液
浓度 溶剂体积 质量 1 mg 5 mg 10 mg
1 mM 3.8559 mL 19.2797 mL 38.5594 mL
5 mM 0.7712 mL 3.8559 mL 7.7119 mL
10 mM 0.3856 mL 1.9280 mL 3.8559 mL

*

请根据产品在不同溶剂中的溶解度选择合适的溶剂配制储备液；一旦配成溶液，请分装保存，避免反复冻融造成的产品失效。
储备液的保存方式和期限：-80°C, 6 months; -20°C, 1 month。-80°C 储存时，请在 6 个月内使用，-20°C 储存时，请在 1 个月内使用。

In Vivo:

请根据您的实验动物和给药方式选择适当的溶解方案。以下溶解方案都请先按照 In Vitro 方式配制澄清的储备液，再依次添加助溶剂：

——为保证实验结果的可靠性，澄清的储备液可以根据储存条件，适当保存；体内实验的工作液，建议您现用现配，当天使用； 以下溶剂前显示的百
分比是指该溶剂在您配制终溶液中的体积占比；如在配制过程中出现沉淀、析出现象，可以通过加热和/或超声的方式助溶

  • 1.

    请依序添加每种溶剂： 10% DMSO    40% PEG300    5% Tween-80    45% saline

    Solubility: ≥ 2.5 mg/mL (9.64 mM); Clear solution

    此方案可获得 ≥ 2.5 mg/mL (9.64 mM，饱和度未知) 的澄清溶液。

    以 1 mL 工作液为例，取 100 μL 25.0 mg/mL 的澄清 DMSO 储备液加到 400 μL PEG300 中，混合均匀；向上述体系中加入50 μL Tween-80，混合均匀；然后继续加入 450 μL生理盐水定容至 1 mL。

    将 0.9 g 氯化钠，完全溶解于 100 mL ddH₂O 中，得到澄清透明的生理盐水溶液

  • 2.

    请依序添加每种溶剂： 10% DMSO    90% (20% SBE-β-CD in saline)

    Solubility: ≥ 2.5 mg/mL (9.64 mM); Clear solution

    此方案可获得 ≥ 2.5 mg/mL (9.64 mM，饱和度未知) 的澄清溶液。

    以 1 mL 工作液为例，取 100 μL 25.0 mg/mL 的澄清 DMSO 储备液加到 900 μL 20% 的 SBE-β-CD 生理盐水水溶液中，混合均匀。

    将 2 g 磺丁基醚 β-环糊精加入 5 mL 生理盐水中，再用生理盐水定容至 10 mL，完全溶解，澄清透明
  • 3.

    请依序添加每种溶剂： 10% DMSO    90% corn oil

    Solubility: ≥ 2.5 mg/mL (9.64 mM); Clear solution

    此方案可获得 ≥ 2.5 mg/mL (9.64 mM，饱和度未知) 的澄清溶液，此方案不适用于实验周期在半个月以上的实验。

    以 1 mL 工作液为例，取 100 μL 25.0 mg/mL 的澄清 DMSO 储备液加到 900 μL玉米油中，混合均匀。

*以上所有助溶剂都可在 上海金畔生物科技有限公司 网站选购。
参考文献

  • [1]. Kato K, et al. Neurochemical properties of ramelteon (TAK-375), a selective MT1/MT2 receptor agonist. Neuropharmacology. 2005;48(2):301-310.

    [2]. Mayer G, et al. Efficacy and safety of 6-month nightly ramelteon administration in adults with chronic primary insomnia. Sleep. 2009;32(3):351-360.

    [3]. Hirai K, et al. Ramelteon (TAK-375) accelerates reentrainment of circadian rhythm after a phase advance of the light-dark cycle in rats. J Biol Rhythms. 2005;20(1):27-37.

    [4]. Miyamoto M, et al. The sleep-promoting action of ramelteon (TAK-375) in freely moving cats. Sleep. 2004;27(7):1319-1325.

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