Name: Ralimetinib (LY2228820) dimesylate
Brand: Selleck Chemicals
SKU: S1494
Availability: InStock
Rating: 5 (85 reviews)

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Quality Control

Batch: Purity: 99.75%

99.75

Related Targets	ERK Raf JNK MEK Ras KRas S6 Kinase MAP4K TAK1 Mixed Lineage Kinase
Other p38 MAPK Inhibitors	SB202190 SB203580 (Adezmapimod) PH-797804 Doramapimod (BIRB 796) VX-702 Losmapimod SB239063 Neflamapimod (VX-745) BMS-582949 Skepinone-L

Cell Culture, Treatment & Working Concentration

Cell Lines	Assay Type	Concentration	Formulation	Activity Description	PMID
RPMI-8226	Kinase assay	~800 nM	DMSO	inhibits phosphorylation of HSP27	18397345
U266	Kinase assay	~800 nM	DMSO	inhibits phosphorylation of HSP27	18397345
MM.1S	Kinase assay	~800 nM	DMSO	inhibits phosphorylation of HSP27	18397345
RPMI-Dox40	Kinase assay	~800 nM	DMSO	inhibits phosphorylation of HSP27	18397345
RPMI-LR5	Kinase assay	~800 nM	DMSO	inhibits phosphorylation of HSP27	18397345
INA-6	Kinase assay	~800 nM	DMSO	inhibits phosphorylation of HSP27	18397345
RPMI-8226	Cytoxicity assay	~1000 nM	DMSO	no significant cytotoxicity	18397345
U266	Cytoxicity assay	~1000 nM	DMSO	no significant cytotoxicity	18397345
MM.1S	Cytoxicity assay	~1000 nM	DMSO	no significant cytotoxicity	18397345
RPMI-Dox40	Cytoxicity assay	~1000 nM	DMSO	no significant cytotoxicity	18397345
RPMI-LR5	Cytoxicity assay	~1000 nM	DMSO	no significant cytotoxicity	18397345
INA-6	Cytoxicity assay	~1000 nM	DMSO	no significant cytotoxicity	18397345
CD14+	Function assay	~800 nM	DMSO	inhibits osteoclastogenesis from CD14 positive cells	18397345
U-87-MG	Function assay	1 μM	DMSO	reduces tumor-driven cord formation	23335506
MDA-MB-231	Function assay	1 μM	DMSO	reduces tumor-driven cord formation	23335506
A-2780	Function assay	1 μM	DMSO	reduces tumor-driven cord formation	23335506
SK-OV-3	Function assay	1 μM	DMSO	reduces tumor-driven cord formation	23335506
LXFA-629	Function assay	1 μM	DMSO	reduces tumor-driven cord formation	23335506
NCI-H1650	Function assay	1 μM	DMSO	reduces tumor-driven cord formation	23335506
PC-3	Function assay	1 μM	DMSO	reduces tumor-driven cord formation	23335506
RAW264.7	Function assay	~20 μM	DMSO	inhibits Anisomycin-stimulated MK2 phosphorylation with IC50 of 35.3 nM	24356814
mouse peritoneal macrophages	Function assay	~20 μM	DMSO	LPS/IFN-γ–stimulated TNF-α production with IC50 of 6.3 nM	24356814
A549	Function assay	~20 μM	DMSO	inhibits LPS-induced CXCL8 production with IC50 of 144.9 nM	24356814
MDA-231	Function assay	~10 μM		suppresses DKK-1 expression	26407843
MCF-7	Function assay	~10 μM		suppresses DKK-1 expression	26407843
MDA-435	Function assay	~10 μM		suppresses DKK-1 expression	26407843
PC3	Function assay	~10 μM	DMSO	suppresses DKK-1 expression	26913608
TC32	qHTS assay			qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for TC32 cells	29435139
A673	qHTS assay			qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for A673 cells	29435139
DAOY	qHTS assay			qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for DAOY cells	29435139
BT-37	qHTS assay			qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for BT-37 cells	29435139
RD	qHTS assay			qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for RD cells	29435139
BT-12	qHTS assay			qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for BT-12 cells	29435139
NB1643	qHTS assay			qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for NB1643 cells	29435139
OHS-50	qHTS assay			qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for OHS-50 cells	29435139
Rh41	qHTS assay			qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for Rh41 cells	29435139
Rh30	qHTS assay			qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for Rh30 cells	29435139
Click to View More Cell Line Experimental Data

Solubility

In vitro
Batch:

Water : 123 mg/mL

DMSO : 35 mg/mL (57.12 mM)
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO.)

Ethanol : 3 mg/mL

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.
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.
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	Saline Validated by Selleck labs. Should you need adjustments to this formulation, contact our sales team for custom testing.	30.000mg/ml (48.96mM)	Taking the 1 mL working solution as an example, add 30 mg of this product to 1 ml of physiological saline (0.9% NaCL solution), mix evenly to make it clear, 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.
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

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%

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	612.74	Formula	C₂₄H₂₉FN₆.2CH₄O₃S	Storage (From the date of receipt)	3 years-20°Cpowder
CAS No.	862507-23-1	Download SDF		Storage of Stock Solutions	1 year-80°Cin solvent 1 month-20°Cin solvent
Synonyms	N/A			Smiles	CC(C)(C)CN1C2=C(C=CC(=N2)C3=C(N=C(N3)C(C)(C)C)C4=CC=C(C=C4)F)N=C1N.CS(=O)(=O)O.CS(=O)(=O)O

Mechanism of Action

Targets/IC₅₀/Ki	p38α (Cell-free assay) 7 nM
In vitro	LY2228820 inhibits p38α, as well as the level of phosphoMAPKAPK-2 (pMK2) in RAW 264.7 cells, with IC50 values of 7 nM and 34.3 nM, respectively. Furthermore, LY2228820 inhibits lipopolysaccharide (LPS)-induced TNFα formation in murine peritoneal macrophages, with IC50 of 5.2 nM. In multiple myeloma (MM) cells, including INA6, RPMI-8226, U266, and RPMI-Dox40, LY2228820 (200 nM–800 nM) significantly blocks p38MAPK signaling, as revealed by its inhibition on phosphorylation of HSP27, a downstream target of p38MAPK, without affecting the expression level of HSP27. LY2228820 (200 nM–400 nM) enhances cytotoxicity and apoptosis, but LY2228820 alone doesn't inhibit the growth of MM.1S cells. LY2228820 (200 nM–800 nM) also inhibits secretion of IL-6 and MIP-1α in long-term BM stromal cells (LT-BMSCs), BM mononuclear cells (BMMNCs), peripheral blood (PB) CD138⁺, CD138⁻ or PB CD14⁺ cells. LY2228820 (400 nM–800 nM) also blocks osteoclastogenesis from CD14⁺ cells.
Kinase Assay	Inhibition of p38α
Kinase Assay	Inhibition of p38α is determined using recombinant human p38α in a standard filter binding protocol using ATP[γ-³³P] and EGFR 21-mer peptide as substrate. Functional inhibition of TNFα in murine peritoneal macrophages is determined using LPS stimulation in the presence of LY2228820. To assess p38α activity in cells more directly, RAW 264.7 cells are treated with LY2228820 and then stimulated with anisomycin. The level of p38α activity is detected using a phosphoMAPKAPK-2 (pMK2) (Thr 334) antibody which reacts with a residue specifically phosphorylated by p38α.
In vivo	In LPS-induced mice, LY2228820 effectively inhibits the formation of TNFα with a threshold minimum 50% effective dose (TMED₅₀) less than 1 mg/kg. In a rat model of collagen-inducedarthritis (CIA), LY2228820 displays potent effects on paw swelling, bone erosion, and cartilage destruction, with a threshold minimum 50% effective dose (TMED₅₀)of 1.5 mg/kg.
References	[1] https://pubmed.ncbi.nlm.nih.gov/18039577/ [2] https://pubmed.ncbi.nlm.nih.gov/18397345/ [3] https://pubmed.ncbi.nlm.nih.gov/15940263/

Applications

Methods	Biomarkers	Images	PMID
Western blot	p-p38 / p38α / p38β / p-MK2 / MK2 / p-HSP27 / HSP27 p-S6K		23335506

Clinical Trial Information

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

NCT Number	Recruitment	Conditions	Sponsor/Collaborators	Start Date	Phases
NCT02860780	Completed	Advanced Cancer\|Metastatic Cancer\|Colorectal Cancer\|Non-small Cell Lung Cancer	Eli Lilly and Company	August 10 2016	Phase 1
NCT02364206	Completed	Adult Glioblastoma	Centre Jean Perrin\|National Cancer Institute France\|ARC Foundation for Cancer Research	June 8 2015	Phase 1\|Phase 2
NCT02322853	Terminated	Postmenopausal\|Metastatic Breast Cancer	Centre Francois Baclesse\|National Cancer Institute France\|ARC Foundation for Cancer Research	January 2015	Phase 2
NCT01393990	Completed	Advanced Cancer	Eli Lilly and Company	September 4 2008	Phase 1

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Ralimetinib (LY2228820) dimesylate p38 MAPK inhibitor

Chemical Structure

Molecular Weight: 612.74