Nebentan (YM598 free base) is a potent, selective and orally active non-peptideendothelinET_Areceptorantagonist through the modification of Bosentan (HY-A0013). Nebentan inhibits [¹²⁵I] endothelin-1 binding to cloned human endothelin ETA and ETB receptor, withK_iof 0.697 nM and 569 nM, respectively^[1]. YM598 can ameliorate the progression of cor pulmonale and myocardial infarction in vivo^[2].

Nebentan inhibits the specific binding of [¹²⁵I] endothelin-1 to endothelin ET_Aand ET_Breceptors in a concentration dependent manner, K_ivalues are 0.697 nM and 1.53 nM for human and rat endothelin ETA receptors, respectively. In contrast, YM598 exhibits low affinities for human and rat endothelin ET_Breceptors, with K_ivalues of 569 nM and 155 nM,respectively^[1].
In measurement of intracellular Ca²⁺concentration, Nebentan concentration-dependently inhibits the increase in [Ca²⁺]i induced by 10 nM endothelin-1 in both CHO cells and A10 cells, the IC₅₀values are 26.2 nM for CHO cells and 26.7 nM for A10 cells, respectively^[1].

Nebentan (oral administration; 0.1-1 mg/kg; 4 weeks) significantly inhibits the progression of pulmonary hypertension and the development of right ventricular hypertrophy^[2].
Nebentan (oral administration; 1 mg/kg; 30 weeks) significantly ameliorates the poor survival rate of CHF rats, it markedly reduces the hypertrophy of both ventricles as well as pulmonary congestion^[2].

491.52

Solid

C₂₄H₂₁N₅O₅S

403604-85-3

Room temperature in continental US; may vary elsewhere.

DMSO : 125 mg/mL(254.31 mM;Need ultrasonic)

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℃, 6 months; -20℃, 1 month。-80℃ 储存时，请在 6 个月内使用，-20℃ 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: ≥ 2.08 mg/mL (4.23 mM); Clear solution

  此方案可获得 ≥ 2.08 mg/mL (4.23 mM，饱和度未知) 的澄清溶液。

  以 1 mL 工作液为例，取 100 μL 20.8 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: ≥ 2.08 mg/mL (4.23 mM); Clear solution

  此方案可获得 ≥ 2.08 mg/mL (4.23 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 20.8 mg/mL 的澄清 DMSO 储备液加到 900 μL玉米油中，混合均匀。