Name: LJI308
Brand: Selleck Chemicals
SKU: S7871
Availability: InStock
Rating: 5 (7 reviews)

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Batch: S787101 DMSO]40 mg/mL]false]Water]Insoluble]false]Ethanol]Insoluble]false Purity: 99.36%

Cited in Nature Medicine for its top-tier quality
COA
NMR
HPLC
SDS
Datasheet

99.36

Related Targets	PI3K Akt mTOR GSK-3 ATM/ATR DNA-PK AMPK PDPK1 PTEN PP2A
Other S6 Kinase Inhibitors	PF-4708671 BI-D1870 LY2584702 LY2584702 Tosylate LJH685 S6K-18 3'-Hydroxypterostilbene BRD7389 L-Norvaline Gingerenone A

Solubility

In vitro
Batch:

DMSO : 40 mg/mL (108.58 mM)
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO.)

Water : Insoluble

Ethanol : Insoluble

Molarity Calculator

Mass	Concentration	Volume	Molecular Weight
Mass value Mass unit	Concentration value Concentration unit	Volume value Volume unit	Molecular weight (g/mol)

Dilution Calculator Molecular Weight Calculator

In vivo batch selection 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.	0.500mg/ml (1.36mM)	Taking the 1 mL working solution as an example, add 50 μL of 10 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.	0.125mg/ml (0.34mM)	Taking the 1 mL working solution as an example, add 50 μL of 2.5 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.

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.

Chemical Information, Storage & Stability

Molecular Weight	368.38	Formula	C₂₁H₁₈F₂N₂O₂	Storage (From the date of receipt)	3 years-20°Cpowder
CAS No.	1627709-94-7	Download SDF		Storage of Stock Solutions	1 year-80°Cin solvent 1 month-20°Cin solvent
Synonyms	N/A			Smiles	C1COCCN1C2=CC=C(C=C2)C3=C(C=NC=C3)C4=CC(=C(C(=C4)F)O)F

Mechanism of Action

Targets/IC₅₀/Ki	RSK2 4 nM RSK1 6 nM RSK3 13 nM
In vitro	In MDA-MB-231 and H358 cells, LJI308 blocks cellular inhibition of RSK and its phosphorylation of YB1 on Ser102 with EC50 of 0.2–0.3 μM, and thus inhibits cell growth. In TNBC HTRY-LT cells, this compound also suppresses cell growth correlative with YB-1 inhibition.
Kinase Assay	Inhibition of RSK1, RSK2, and RSK3 activity
Kinase Assay	Enzymatic activity of RSK isoforms 1, 2, and 3 is assessed using recombinant full-length RSK protein. RSK1 (1 nM), RSK2 (0.1 nM), or RSK3 (1 nM) is allowed to phosphorylate 200 nM peptide substrate (biotin-AGAGRSRHSSYPAGT-OH) in the presence of ATP at concentration equal to the Km for ATP for each enzyme (RSK1- 5 μM, RSK2- 20 μM, RSK3- 10 μM) and appropriate dilutions of this compound in 50 mM HEPES, pH 7.5, 10 mM MgCl₂, 1 mM DTT, 0.1% BSA Fraction V, 0.01% Tween-20. After 150 min at room temperature, the reaction is stopped with 60 mM EDTA and extent of peptide phosphorylation was determined using an anti-phospho-AKT substrate antibody and AlphaScreen reagents as described by the manufacturer.
References	[1] https://pubmed.ncbi.nlm.nih.gov/24554780/ [2] https://pubmed.ncbi.nlm.nih.gov/26011941/

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LJI308 S6 Kinase inhibitor

Chemical Structure

Molecular Weight: 368.38