WHI-P180 (Janex 3) is a multi-kinase inhibitor; inhibits RET, KDR and EGFR with IC₅₀s of 5 nM, 66 nM and 4 μM, respectively.

WHI-P180 is also an active inhibitor of IgE-mediated mast cell responses. The elimination half-life of WHI-P180 in CD-1 mice (BALB/c mice) following i.v., i.p., or p.o. administration is less than 10 min. Systemic clearance of WHI-P180 is 6742 mL/h/kg in CD-I mice and 8188 mL/h/kg in BALB/c mice. Notably, WHI-P180, when administered in two consecutive nontoxic i.p. bolus doses of 25 mg/kg, inhibits IgE/antigen-induced vascular hyperpermeability in a well-characterized murine model of passive cutaneous anaphylaxis^[3].

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.

297.31

C₁₆H₁₅N₃O₃

211555-08-7

Room temperature in continental US; may vary elsewhere.

DMSO : 25 mg/mL (84.09 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°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： 50% PEG300    50% saline

  Solubility: 10 mg/mL (33.63 mM); Suspended solution; Need ultrasonic
• 2.

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

  Solubility: ≥ 2.5 mg/mL (8.41 mM); Clear solution

  此方案可获得 ≥ 2.5 mg/mL (8.41 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

• 3.

  请依序添加每种溶剂： 10% DMSO    90% corn oil

  Solubility: ≥ 2.5 mg/mL (8.41 mM); Clear solution

  此方案可获得 ≥ 2.5 mg/mL (8.41 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。

• [1]. Newton R, et al. The discovery of 2-substituted phenol quinazolines as potent RET kinase inhibitors with improved KDR selectivity. Eur J Med Chem. 2016 Apr 13;112:20-32.

  [2]. Ghosh S, et al. 4-[3-Bromo-4-hydroxyphenyl)amino]-6,7-dimethoxyquinazolin-1-ium chloride methanol solvateand 4-[(3-hydroxyphenyl)amino]-6,7-dimethoxy-1-quinazolinium chloride. Acta Crystallogr C. 2001 Jan;57(Pt 1):76-8.

  [3]. Chen CL, et al. Pharmacokinetics and biologic activity of the novel mast cell inhibitor, 4-(3-hydroxyphenyl)-amino-6,7-dimethoxyquinazoline in mice. Pharm Res. 1999 Jan;16(1):117-22.

Inhibitors (WHI-P180) are pre-incubated in the plate for 15 min with 5 μL kinase and assay buffer at the following concentrations; 13 pM RET and 150 pM KDR. The reaction is initiated by the addition of 5 μL ATP and substrate at 2×final reaction concentrations. For RET, this is 18 μM and 2 μM; for KDR, this is 16 μM and 1 μM, respectively. Reactions are performed at ATP Km for each target. The assay is allowed to proceed at room temperature for 20 min before terminating with the addition of 10 μL HTRF detection buffer containing EDTA supplemented with TK-antibody labelled with Eu3+-Cryptate (1:100 dilution) and streptavidin-XL665 (128 nM). Following incubation at room temperature for 1 h, FRET signal is measured^[1].

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.

IL3-dependent BaF3 cells are modified to express an activated recombinant kinase. Following removal of IL3, the modified cells are dependent on the activity of the recombinant kinase for survival and proliferation. The BaF3 cell lines, expressing KIF5B-RET and KDR are maintained in RPMI-1640 media containing 10% FBS and appropriate antibiotics. Non-modified BaF3 cells (WT) are maintained in RPMI-1640 media containing 10% FBS and supplemented with 10 ng/mL recombinant mouse IL3. For assessment of compound IC₅₀, cells are plated into 384-well plates at 1500 or 3000 cells per well in 30 μL culture medium and compounds dispensed using an acoustic liquid handling platform. Following incubation of the cells for 48 h at 37 °C in a humidified 5% CO₂ atmosphere, viability is determined by addition of 10 μL CellTiter-Glo reagent and measurement of luminescence^[1].

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.

Mice: A high performance liquid chromatography (HPLC)-based quantitative detection method is used to measure plasma WHI-P180levels in mice. The plasma concentration-time data is fit to a single compartment pharmacokinetic model by using the WinNonlin program to calculate the pharmacokinetic parameters. A cutaneous anaphylaxis model is used to examine the pharmacodynamic effects of WHI-P180 on anaphylaxis-associated vascular hyperpermeability^[3].

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.

• [1]. Newton R, et al. The discovery of 2-substituted phenol quinazolines as potent RET kinase inhibitors with improved KDR selectivity. Eur J Med Chem. 2016 Apr 13;112:20-32.

  [2]. Ghosh S, et al. 4-[3-Bromo-4-hydroxyphenyl)amino]-6,7-dimethoxyquinazolin-1-ium chloride methanol solvateand 4-[(3-hydroxyphenyl)amino]-6,7-dimethoxy-1-quinazolinium chloride. Acta Crystallogr C. 2001 Jan;57(Pt 1):76-8.

  [3]. Chen CL, et al. Pharmacokinetics and biologic activity of the novel mast cell inhibitor, 4-(3-hydroxyphenyl)-amino-6,7-dimethoxyquinazoline in mice. Pharm Res. 1999 Jan;16(1):117-22.