Tolvaptan is a selective, competitive arginine vasopressin receptor 2 antagonist with an IC50 of 1.28μM for the inhibition of AVP-induced platelet aggregation. IC50 value: 1.28 uM (inhibition of AVP-induced platelet aggregation) Target: vasopressin receptor 2 Tolvaptan (OPC-41061) is a selective, competitive arginine vasopressin receptor 2 antagonist with an IC50 of 1.28μM for the inhibition of AVP-induced platelet aggregation. Tolvaptan (OPC-41061) is used to treat hyponatremia (low blood sodium levels) associated with congestive heart failure, cirrhosis, and the syndrome of inappropriate antidiuretic hormone (SIADH). Tolvaptan (OPC-41061) is also in fast-track clinical trials for polycystic kidney disease. Treatment with t tolvaptan (OPC-41061) causes rapid and sustained body weight reductions concurrent with increases in urine output, improves and/or normalizes serum sodium in hyponatremic patients, reduces signs and symptoms of congestion and increases thirst. However, tolvaptan (OPC-41061) has not been shown to decrease heart failure re-hospitalization or mortality. As an adjunct to standard therapy, tolvaptan (OPC-41061) is unique in that it is virtually the only novel agent tested in patients hospitalized for acute heart failure syndrome (AHFS) to reach its primary end point for short-term efficacy without causing deleterious side effects.

448.94

C₂₆H₂₅ClN₂O₃

150683-30-0

托伐普坦

Room temperature in continental US; may vary elsewhere.

DMSO : ≥ 100 mg/mL (222.75 mM)

* “≥” means soluble, but saturation unknown.

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。

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: ≥ 2.17 mg/mL (4.83 mM); Clear solution

  此方案可获得 ≥ 2.17 mg/mL (4.83 mM，饱和度未知) 的澄清溶液。

  以 1 mL 工作液为例，取 100 μL 21.7 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% corn oil

  Solubility: ≥ 2.17 mg/mL (4.83 mM); Clear solution

  此方案可获得 ≥ 2.17 mg/mL (4.83 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 21.7 mg/mL 的澄清 DMSO 储备液加到 900 μL玉米油中，混合均匀。

• [1]. Friedman B, Cirulli J. Hyponatremia in critical care patients: Frequency, outcome, characteristics, and treatment with the vasopressin V(2)-receptor antagonist tolvaptan. J Crit Care. 2012 Aug 8.

  [2]. Inomata T. Tolvaptan (vasopressin receptor antagonist).Nihon Rinsho. 2011 Nov;69 Suppl 9:408-11.

  [3]. Vaduganathan M, Gheorghiade M, Pang PS, Konstam MA, Zannad F, Swedberg K, Grinfeld L, Burnett JC Jr, Krasa HB, Zimmer C, Blair J, Ouyang J, Maggioni AP; EVEREST investigators. Efficacy of oral tolvaptan in acute heart failure patients with hypotension and renal impairment. J Cardiovasc Med (Hagerstown). 2012 Jul;13(7):415-22.

  [4]. Y Yamamura et al. OPC-41061, a Highly Potent Human Vasopressin V2-Receptor Antagonist: Pharmacological Profile and Aquaretic Effect by Single and Multiple Oral Dosing in Rats. J. Pharmacol. Exp. Ther. 1998, 287(3), 860-867.

  [5]. RW Schrier et al. Tolvaptan, a Selective Oral Vasopressin V2-Receptor Antagonist, for Hyponatremia. N Engl J Med 2006, 355, 2099-2112.