WHI-P180 hydrochloride

inhibitor of Cdk2, EGFR and Janus Kinase 3 CAS# 153437-55-9

WHI-P180 hydrochloride

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Chemical structure

WHI-P180 hydrochloride

3D structure

Chemical Properties of WHI-P180 hydrochloride

Cas No. 153437-55-9 SDF Download SDF
PubChem ID 53324500 Appearance Powder
Formula C16H16ClN3O3 M.Wt 333.77
Type of Compound N/A Storage Desiccate at -20°C
Synonyms Janex 3 hydrochloride;
Solubility Soluble in DMSO
Chemical Name 3-[(6,7-dimethoxyquinazolin-4-yl)amino]phenol;hydrochloride
SMILES COC1=C(C=C2C(=C1)C(=NC=N2)NC3=CC(=CC=C3)O)OC.Cl
Standard InChIKey MJLLZROGIFJFJJ-UHFFFAOYSA-N
Standard InChI InChI=1S/C16H15N3O3.ClH/c1-21-14-7-12-13(8-15(14)22-2)17-9-18-16(12)19-10-4-3-5-11(20)6-10;/h3-9,20H,1-2H3,(H,17,18,19);1H
General tips For obtaining a higher solubility , please warm the tube at 37 ℃ and shake it in the ultrasonic bath for a while.Stock solution can be stored below -20℃ for several months.
We recommend that you prepare and use the solution on the same day. However, if the test schedule requires, the stock solutions can be prepared in advance, and the stock solution must be sealed and stored below -20℃. In general, the stock solution can be kept for several months.
Before use, we recommend that you leave the vial at room temperature for at least an hour before opening it.
About Packaging 1. The packaging of the product may be reversed during transportation, cause the high purity compounds to adhere to the neck or cap of the vial.Take the vail out of its packaging and shake gently until the compounds fall to the bottom of the vial.
2. For liquid products, please centrifuge at 500xg to gather the liquid to the bottom of the vial.
3. Try to avoid loss or contamination during the experiment.
Shipping Condition Packaging according to customer requirements(5mg, 10mg, 20mg and more). Ship via FedEx, DHL, UPS, EMS or other couriers with RT, or blue ice upon request.

Biological Activity of WHI-P180 hydrochloride

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

References:
[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.

Protocol

Kinase Assay [1]
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].

Cell Assay [1]
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].

Animal Administration [3]
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].

References:
[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.

WHI-P180 hydrochloride Dilution Calculator

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WHI-P180 hydrochloride Molarity Calculator

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Preparing Stock Solutions of WHI-P180 hydrochloride

1 mg 5 mg 10 mg 20 mg 25 mg
1 mM 2.9961 mL 14.9804 mL 29.9608 mL 59.9215 mL 74.9019 mL
5 mM 0.5992 mL 2.9961 mL 5.9922 mL 11.9843 mL 14.9804 mL
10 mM 0.2996 mL 1.498 mL 2.9961 mL 5.9922 mL 7.4902 mL
50 mM 0.0599 mL 0.2996 mL 0.5992 mL 1.1984 mL 1.498 mL
100 mM 0.03 mL 0.1498 mL 0.2996 mL 0.5992 mL 0.749 mL
* Note: If you are in the process of experiment, it's necessary to make the dilution ratios of the samples. The dilution data above is only for reference. Normally, it's can get a better solubility within lower of Concentrations.

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Background on WHI-P180 hydrochloride

WHI-P180 hydrochloride is a potent inhibitor of Cdk2 and EGFR with IC50 values of 1.0 and 4.0 μM, respectively [1].

Cyclin-dependent kinase 2 (CDK2) is a Ser/Thr protein kinase and is a member of the cyclin-dependent kinase family. CDK2 plays an important role in the G1-S phase. The epidermal growth factor receptor (EGFR) is the cell-surface receptor for members of the epidermal growth factor family.

WHI-P180 is a potent inhibitor of the EGFR tyrosine kinase as well as Janus Kinase 3 [1]. Also, it is a novel inhibitor of mast cell [3]. WHI-P180 inhibited ABCG2-mediated hematoporphyrin transport. In ABCG2-expressing Flp-In-293 cells with pheophorbide a, WHI-P180 (5 μM) moderately inhibited ABCG2 function and exhibited weak phototoxicity [2].

In a passive cutaneous anaphylaxis murine model, WHI-P180 (25 mg/kg) inhibited IgE/antigen-induced vascular hyperpermeability, which suggested that WHI-P180 is an inhibitor of IgE-mediated mast cell responses [3].

References:
[1].  Ghosh S, Jennissen JD, Liu XP, et al. 4-[3-Bromo-4-hydroxyphenyl)amino]-6,7-dimethoxyquinazolin-1-ium chloride methanol solvate and 4-[(3-hydroxyphenyl)amino]-6,7-dimethoxy-1-quinazolinium chloride. Acta Crystallogr C, 2001, 57(Pt 1): 76-78.
[2].  An R, Hagiya Y, Tamura A, et al. Cellular phototoxicity evoked through the inhibition of human ABC transporter ABCG2 by cyclin-dependent kinase inhibitors in vitro. Pharm Res, 2009, 26(2): 449-458.
[3].  Chen CL, Malaviya R, Navara C, et al. Pharmacokinetics and biologic activity of the novel mast cell inhibitor, 4-(3-hydroxyphenyl)-amino-6,7-dimethoxyquinazoline in mice. Pharm Res, 1999, 16(1): 117-122.

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References on WHI-P180 hydrochloride

Compatibility and Stability of Rolapitant Injectable Emulsion Admixed with Intravenous Palonosetron Hydrochloride.[Pubmed:28346200]

Int J Pharm Compd. 2017 Jan-Feb;21(1):76-82.

Neurokinin-1 receptor antagonist, 5-hydroxytryptamine-3 RA, and dexamethasone combination therapy is standard of care for the prevention of chemotherapy-induced nausea and vomiting. Herein we describe the physical and chemical stability of rolapitant injectable emulsion 166.5 mg in 92.5 mL (185 mg hydrochloride salt) admixed with palonosetron injection 0.25 mg in 5 mL (0.28 mg hydrochloride salt). Admixtures were prepared and stored in two types of container closures (110-mL Crystal Zenith plastic and glass bottles) and four types of intravenous administration sets (or intravenous tubing sets). Assessment of the physical and chemical stability was conducted on the admixtures in the ready-to-use container closure systems as supplied by the manufacturer, stored at room temperature (20 degrees C to 25 degrees C under fluorescent light), and evaluated at 0, 1, and 6 hours; 1 and 2 days; and under refrigeration (2 degrees C to 8 degrees C protected from light) after 1, 3, and 7 days. For admixtures in intravenous tubing sets, the assessment of physicochemical stability was performed after 0 and 7 hours of storage at 20 degrees C to 25 degrees C initially, and then after 20 hours (total 27 hours) at 2 degrees C to 8 degrees C protected from light. Physical stability was assessed by visual examination of the container contents under normal room light, and measuring turbidity and particulate matter. Chemical stability was assessed by measuring the pH of the admixture and determining drug concentrations and impurity levels with high-performance liquid chromatographic analysis. The results indicated that all samples were physically compatible throughout the duration of the study. The pH, turbidity, and particulate matter of the admixture stayed within narrow and acceptable ranges. Rolapitant admixed with palonosetron was chemically stable when admixed in glass and Crystal Zenith bottles for at least 48 hours at room temperature and for 7 days under refrigeration, as well as in the four selected intravenous tubing sets for 7 hours at 20 degrees C to 25 degrees C and then for 20 hours at 2 degrees C to 8 degrees C. No loss of potency of any admixed components occurred in the samples stored at the two temperature ranges and time period studied.

[The Discovery, Research and Development of Etelcalcetide Hydrochloride, the World 1st Intravenous Calcimimetics.][Pubmed:28336830]

Clin Calcium. 2017;27(4):537-545.

Etelcalcetide hydrochloride is the first intravenous calcimimetics agent for secondary hyperparathyroidism (SHPT). Etelcalcetide hydrochloride is to be administered through dialysis circuit by physician or medical staff upon completion of dialysis and such administration is expected to reduce the burden of medication in patients. From the nonclinical study results, etelcalcetide functions as an allosteric activator of calcium-sensing receptor(CaSR). Etelcalcetide suppressed PTH secretion both in vitro and in vivo. In a rat model of chronic renal insufficiency, etelcalcetide suppressed SHPT disorders, such as parathyroid gland hypertrophy, bone disorder, and ectopic calcification. In conclusion, etelcalcetide hydrochloride is expected to exhibit therapeutic effect against each SHPT condition by decreasing blood PTH concentrations via CaSR-agonist activity in the clinical situation.

Study on the interaction of 6-(2-morpholin-4-yl-ethyl)-6H-indolo [2,3-b]quinoxaline hydrochloride with human serum albumin by fluorescence spectroscopy.[Pubmed:28355158]

Methods Appl Fluoresc. 2016 Sep 14;4(3):034012.

Under physiological conditions, in vitro interaction between the bio-active substance 6-(2-morpholin-4-yl-ethyl)-6H-indolo[2,3-b]quinoxaline hydrochloride (MIQ) and human serum albumin (HSA) was investigated at an excitation wavelength 260 nm and at different temperatures (298 K, 308 K and 313 K) by fluorescence emission spectroscopy. From spectral analysis, MIQ showed a strong ability to quench the intrinsic fluorescence of HSA through a static quenching procedure. The binding constant is estimated asK A = 2.55 x 10(-4) l . mol(-1) at 298 K. Based on the thermodynamic parameters evaluated from the van 't Hoff equation, the enthalpy change (DeltaH degrees ) and entropy change (DeltaS degrees ) were derived to be negative values. A value of 2.37 nm for the average distance r between MIQ (acceptor) and tryptophan residues of HSA (donor) was derived from the fluorescence resonance energy transfer. UV/vis absorption spectra were used to confirm the quenching mechanism.

Identification of pyrolysis products of the new psychoactive substance 2-amino-1-(4-bromo-2,5-dimethoxyphenyl)ethanone hydrochloride (bk-2C-B) and its iodo analogue bk-2C-I.[Pubmed:28371351]

Drug Test Anal. 2018 Jan;10(1):229-236.

2-Amino-1-(4-bromo-2,5-dimethoxyphenyl)ethanone hydrochloride (bk-2C-B) has recently emerged as a new psychoactive substance (NPS). It is most commonly consumed orally, although there are indications that it might also be ingested by inhalation or 'smoking'. Information about the stability of bk-2C-B when exposed to heat is unavailable and the potential for pyrolytic degradation and formation of unknown substances available for inhalation prompted an investigation using a simulated 'meth pipe' scenario. Twelve products following pyrolysis of bk-2C-B were detected and verified by organic synthesis of the corresponding standards. In addition, 2-amino-1-(4-iodo-2,5-dimethoxyphenyl)ethanone hydrochloride (bk-2C-I) was characterized for the first time and subjected to pyrolysis as well. Similar products were formed, which indicated that the replacement of the bromo with the iodo substituent did not affect the pyrolysis pattern under the conditions used. Two additional products were detected in the bk-2C-I pyrolates, namely 1-(2,5-dimethoxyphenyl)-ethanone and 1-iodo-4-ethenyl-5-methoxyphenol. The potential ingestion of pyrolysis products with unknown toxicity adds an element of concern. Copyright (c) 2017 John Wiley & Sons, Ltd.

Description

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.

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