Name: Voxtalisib (XL765)
Brand: Selleck Chemicals
SKU: S7646
Rating: 5 (14 reviews)

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Quality Control

Batch: Purity: 99.94%

99.94

Related Targets	EGFR VEGFR JAK PDGFR FGFR Src HIF FLT FLT3 HER2
Other PI3K Inhibitors	GDC-0077 (Inavolisib) SAR405 Quercetin (Sophoretin) LY294002 XL147 analogue Tersolisib (STX-478) Buparlisib (BKM120) 740 Y-P (PDGFR 740Y-P) GO-203 TFA Eganelisib (IPI-549)

Chemical Information, Storage & Stability

Molecular Weight	270.29	Formula	C₁₃H₁₄N₆O	Storage (From the date of receipt)	3 years-20°Cpowder
CAS No.	934493-76-2	Download SDF		Storage of Stock Solutions	1 year-80°Cin solvent 1 month-20°Cin solvent
Synonyms	SAR245409			Smiles	CCN1C2=NC(=NC(=C2C=C(C1=O)C3=CC=NN3)C)N

Solubility

In vitro
Batch:

DMSO : 29 mg/mL (107.29 mM)
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO.)

Water : Insoluble

Ethanol : Insoluble

Molarity Calculator

Mass	Concentration	Volume	Molecular Weight
=	×	×

Dilution Calculator Molecular Weight Calculator

In vivo Batch:
Homogeneous suspension	CMC-NA	≥5mg/ml	Taking the 1 mL working solution as an example, add 5 mg of this product to 1 ml of CMC-Na solution, mix evenly to obtain a homogeneous suspension with a final concentration of 5 mg/ml.
Clear solution	5%DMSO 1 40%PEG300 2 5%Tween80 3 50%ddH2O Validated by Selleck labs. Should you need adjustments to this formulation, contact our sales team for custom testing.	1.450mg/ml (5.36mM)	Taking the 1 mL working solution as an example, add 50 μL of 29 mg/ml clarified DMSO stock solution to 400 μL of PEG300, mix evenly to clarify it; add 50 μL of Tween80 to the above system, mix evenly to clarify; then continue to add 500 μL of ddH2O to adjust the volume to 1 mL. The mixed solution should be used immediately for optimal results.
Clear solution	5% DMSO 1 95% Corn oil Validated by Selleck labs. Should you need adjustments to this formulation, contact our sales team for custom testing.	0.180mg/ml (0.67mM)	Taking the 1 mL working solution as an example, add 50 μL of 3.6 mg/ml clear DMSO stock solution to 950 μL of corn oil and mix evenly. The mixed solution should be used immediately for optimal results.
Homogeneous suspension	CMC-NA	≥5mg/ml	Taking the 1 mL working solution as an example, add 5 mg of this product to 1 ml of CMC-Na solution, mix evenly to obtain a homogeneous suspension with a final concentration of 5 mg/ml.

In vivo Formulation Calculator (Clear solution)

Step 1: Enter information below (Recommended: An additional animal making an allowance for loss during the experiment)

Dosage: mg/kg Average weight of animals: g Dosing volume per animal:μL Number of animals:

Step 2: Enter the in vivo formulation (This is only the calculator, not formulation. Please contact us first if there is no in vivo formulation at the solubility Section.)

% DMSO + % + % Tween 80 + % ddH₂O

%DMSO+ %

Calculation results:

Working concentration: mg/ml;

Method for preparing DMSO master liquid: mg drug pre-dissolved in μL DMSO ( Master liquid concentration mg/mL, Please contact us first if the concentration exceeds the DMSO solubility of the batch of drug. )

Method for preparing in vivo formulation: Take μL DMSO master liquid, next addμL PEG300, mix and clarify, next addμL Tween 80, mix and clarify, next add μL ddH₂O, mix and clarify.

Method for preparing in vivo formulation: Take μL DMSO master liquid, next add μL Corn oil, mix and clarify.

Note: 1. Please make sure the liquid is clear before adding the next solvent.
2. Be sure to add the solvent(s) in order. You must ensure that the solution obtained, in the previous addition, is a clear solution before proceeding to add the next solvent. Physical methods such as vortex, ultrasound or hot water bath can be used to aid dissolving.

Mechanism of Action

Targets/IC₅₀/Ki	PI3Kγ (Cell-free assay) 9 nM PI3Kα (Cell-free assay) 39 nM PI3Kδ (Cell-free assay) 43 nM PI3Kβ (Cell-free assay) 113 nM DNA-PK (Cell-free assay) 150 nM mTOR (Cell-free assay) 157 nM
In vitro	Voxtalisib (XL765) is active against class I PI3K (IC50 = 39, 113, 9 and 43 nM for p110α, β, γ and δ, respectively). It also inhibits DNA-PK (IC50 = 150 nM) and mTOR (IC50 = 157 nM) but not XL-147 which shows IC50 values of > 15 μM. This compound, a dual-target PI3K/mTOR inhibitor, inhibits cell growth and apoptosis in many more cell lines and at lower concentrations as compared to the PI3K-selective inhibitors XL147 and PIK90. Treatment with it results in decreased cell viability in 13 PDA cell lines in a dose-dependent manner. The effect can be recapitulated by using combinations of single-targeted compounds. It significantly reduces phosphorylation of the mTOR targets S6, S6K, and 4EBP1, which is associated with greater apoptosis induction rather than to PI3K inhibition alone. It also causes accumulation of autophagosomes in MIAPaCa-2 cells, and results in significant dose-dependent AVO induction and LC3-II stimulation in MIAPaCa-2 cells stably expressing a LC3-GFP construct.
In vivo	In mice models, Voxtalisib (XL765) at 30 mg/kg in combination with chloroquine (50 mg/kg) results in significant inhibition of BxPC-3 xenograft growth, while this compound alone at the same dose has no inhibitory effect. Oral administration of it results in greater than 12-fold reduction in median tumour bioluminescence compared to control and improvement in median survival in nude mice implanted intracranially with GBM 39-luc cells. When combined with temozolomide (TMZ), it yields a 140-fold reduction in median bioluminescence with a trend toward improvement in median survival compared with TMZ alone.
References	[1] https://pubmed.ncbi.nlm.nih.gov/18794885/ [2] https://pubmed.ncbi.nlm.nih.gov/21678117/ [3] https://pubmed.ncbi.nlm.nih.gov/21317208/

Clinical Trial Information

(data from https://clinicaltrials.gov, updated on 2024-05-22)

NCT Number	Recruitment	Conditions	Sponsor/Collaborators	Start Date	Phases
NCT01596270	Completed	Neoplasm Malignant	Sanofi	June 2012	Phase 1
NCT01410513	Completed	Indolent Non-Hodgkin Lymphoma\|Mantle Cell Lymphoma\|Chronic Lymphocytic Leukemia	Sanofi	December 2011	Phase 1
NCT01240460	Completed	Glioblastoma\|Astrocytoma Grade IV	Sanofi	January 2011	Phase 1

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Voxtalisib (XL765) PI3K inhibitor

Chemical Structure

Molecular Weight: 270.29