Samotolisib (LY3023414; GTPL8918)

This product is for research use only, not for human use. We do not sell to patients.

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Size	Price	Stock
250mg	$1240	Check With Us
500mg	$1850	Check With Us
1g	$2775	Check With Us

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Cat #: V2545 CAS #: 1386874-06-1 Purity ≥ 98%

Description: Samotolisib (LY3023414; GTPL8918) is an orally bioactive, selective and ATP competitive inhibitor of the class I PI3K isoforms, mTOR and DNA-PK with IC50s of 6.07 nM, 77.6 nM, 38 nM, 23.8 nM, 4.24 nM and 165 nM for PI3Kα, PI3Kβ, PI3Kδ, PI3Kγ, DNA-PK and mTOR, respectively.

References: Wei L, et al. Genomic profiling is predictive of response to CDDP treatment but not to PI3K inhibition in bladder cancer patient-derived xenografts. Oncotarget. 2016 Nov 22;7(47):76374-76389.

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Physicochemical and Storage Information
Protocol
Related Biological Data
Stock Solution Preparation
Quality Control Documentation

Molecular Weight (MW)	406.48
Molecular Formula	C23H26N4O3
CAS No.	1386874-06-1
Storage	-20℃ for 3 years in powder formr
Storage	-80℃ for 2 years in solvent
Solubility In Vitro	DMSO: 47 mg/mL (115.6 mM)r
	Water: <1 mg/mLr
	Ethanol: 61 mg/mL (150.1 mM)
SMILES Code	O=C(N1C[C@@H](OC)C)N(C)C2=C1C3=CC(C4=CC(C(C)(O)C)=CN=C4)=CC=C3N=C2
Synonyms	GTPL8918; GTPL 8918; GTPL-8918; LY3023414; LY-3023414; LY 3023414

Protocol	In Vitro	In cell-based assays, Samotolisib (LY3023414) inhibition of PI3K and mTOR is assessed in the PTEN-deficient U87 MG glioblastoma cell line. Samotolisib inhibits the phosphorylation of Akt at position T308 downstream of PI3K at an IC50 of 106 nM. Similarly, Samotolisib inhibits phosphorylation of Akt at position S473 (IC50=94.2 nM) by mTORC2 as well as phosphorylation of mTORC1 kinase targets p70S6K (position T389; IC50=10.6 nM) and 4E-BP1 (positions T37/46; IC50=187 nM). The downstream phosphorylation of S6RP at positions pS240/244 (IC50=19.1 nM) by p70S6K is inhibited as well, indicating target inhibition along the entire PI3K/Akt/mTOR pathway by Samotolisib. Similar IC50 concentrations for PI3K and mTOR phosphorylation targets are observed in other cell lines with activated PI3K/Akt/mTOR pathways. The ability of Samotolisib to inhibit cancer cell proliferation is evaluated in 32 human cancer cell lines from different tumor types in culture after Samotolisib treatment for 2 to 3 cell doublings in dose–response studies. Samotolisib demonstrates potent single-agent activity and IC50 values below 122 nM in half of the cell lines tested.
Protocol	In Vivo	The ability of Samotolisib (LY3023414) to inhibit tumor growth is studied in several xenograft models exhibiting mutations or deletions that activate the PI3K/Akt/mTOR pathway. Treatment with Samotolisib at 3, 6, or 10 mg/kg twice daily orally for 28 days results in dose-responsive inhibition of tumor growth in the PTEN-deleted U87 MG xenograft model. This treatment produces similar TGI in models exhibiting PTEN truncation (786-O), activating PI3Kα mutation (NCI-H1975), and transgenic Eμ-myc mutant PI3Kα-driven leukemia models. Of note, the total daily dose of Samotolisib appears to result in equipotent antitumor activity: 12 mg/kg once daily and 6 mg/kg twice daily produces similar delta T/C values (42% and 38%, respectively) in U87 MG.

These protocols are for reference only. InvivoChem does not independently validate these methods.

Preparing Stock Solutions

Solvent volume to be added	Mass (the weight of a compound)
Mother liquor concentration	1mg	5mg	10mg	20mg
1mM	2.4601 mL	12.3007 mL	24.6015 mL	49.2029 mL
5mM	0.4920 mL	2.4601 mL	4.9203 mL	9.8406 mL
10mM	0.2460 mL	1.2301 mL	2.4601 mL	4.9203 mL
20mM	0.1230 mL	0.6150 mL	1.2301 mL	2.4601 mL

Quality Control Documentation	Select Batch Purity ≥ 98% COA MSDS NMR HPLC

The molarity calculator equation

Mass(g) = Concentration(mol/L) × Volume(L) × Molecular Weight(g/mol)

Mass

Concentration

Volume

Molecular Weight*

The dilution calculator equation

Concentration_(start) × Volume_(start) = Concentration_(final) × Volume_(final)

This equation is commonly abbreviated as: C₁ V₁ = C₂ V₂

Concentration_(start)

Volume_(start)

Concentration_(final)

Volume_(final)

Step One: Enter information below

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

Step Two: Enter the in vivo formulation

%DMSO + % + %Tween 80 + %ddH₂O

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 add µL PEG300, mix and clarify, next add µL Tween 80,mix and clarify, next add µL ddH₂O,mix and clarify.

Note:

(1) Please be sure that the solution is clear before the addition of next solvent. Dissolution methods like vortex, ultrasound or warming and heat may be used to aid dissolving.
(2) Be sure to add the solvent(s) in order.