Niraparib hydrochloride (MK-4827 hydrochloride) is a highly potent and orally bioavailablePARP1andPARP2inhibitor withIC₅₀s of 3.8 and 2.1 nM, respectively. Niraparib hydrochloride leads to inhibition of repair of DNA damage, activatesapoptosisand shows anti-tumor activity^[1][2][3].

Niraparib inhibits PARP activity with EC₅₀=4 nM and EC₉₀=45 nM in a whole cell assay. Niraparib inhibits proliferation of cancer cells with mutant BRCA-1 and BRCA-2 with CC₅₀in the 10–100 nM range. Niraparib displays excellent PARP 1 and 2 inhibition with IC₅₀=3.8 and 2.1 nM, respectively, and in a whole cell assay^[1]. To validate that Niraparib inhibits PARP in these cell lines, A549 and H1299 cells are treated with 1 μM Niraparib for various times and measured PARP enzymatic activity using a chemiluminescent assay. The results show that Niraparib inhibits PARP within 15 minutes of treatment reaching about 85% inhibition in the A549 cells at 1 h and about 55% inhibition at 1 h for the H1299 cells^[2].

Niraparib is well tolerated and demonstrates efficacy as a single agent in a xenograft model of BRCA-1 deficient cancer. Niraparib is well tolerated in vivo and demonstrates efficacy as a single agent in a xenograft model of BRCA-1 deficient cancer. Niraparib is characterized by acceptable pharmacokinetics in rats with plasma clearance of 28 (mL/min)/kg, very high volume of distribution (Vd_ss=6.9 L/kg), long terminal half-life (t_1/2=3.4 h), and excellent bioavailability, F = 65%^[1]. Niraparib enhances radiation response of p53 mutant Calu-6 tumor in both cases, with the single daily dose of 50 mg/kg being more effective than 25 mg/kg given twice daily^[3].

356.85

Solid

C₁₉H₂₁ClN₄O

1038915-64-8

尼拉帕利盐酸盐；尼拉帕尼盐酸盐

Room temperature in continental US; may vary elsewhere.

4°C, sealed storage, away from moisture

*In solvent : -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture)

DMSO : 250 mg/mL(700.57 mM;Need ultrasonic)

H₂O : 100 mg/mL(280.23 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 (sealed storage, away from moisture)。-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： PBS

  Solubility: 100 mg/mL (280.23 mM); Clear solution; Need ultrasonic
• 2.

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

  Solubility: ≥ 2.08 mg/mL (5.83 mM); Clear solution

  此方案可获得 ≥ 2.08 mg/mL (5.83 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
• 3.

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

  Solubility: ≥ 2.08 mg/mL (5.83 mM); Clear solution

  此方案可获得 ≥ 2.08 mg/mL (5.83 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 900 μL20% 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
• 4.

  请依序添加每种溶剂： 10% DMSO    90%corn oil

  Solubility: ≥ 2.08 mg/mL (5.83 mM); Clear solution

  此方案可获得 ≥ 2.08 mg/mL (5.83 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 20.8 mg/mL 的澄清 DMSO 储备液加到 900 μL玉米油中，混合均匀。