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YK-4-279 DNA/RNA Synthesis inhibitor

Name: YK-4-279
SKU: S7679
Availability: InStock
Rating: 5 (14 reviews)

Cat.No.S7679

YK-4-279 is a potent inhibitor of EWS-FLI1 binding to RNA helicase A (RHA).

Chemical Structure

Molecular Weight: 366.20

Jump to Mechanism of Action Cell Culture & Working Concentration Solubility Chemical Information, Storage & Stability Specificity

Quality Control

Batch: Purity: 99.93%

99.93

Related Targets	CDK Microtubule Associated Ras HSP PD-1/PD-L1 Aurora Kinase Casein Kinase Rho Serine/threonin kinase eIF Chk ROCK Myc Kinesin PLK DHFR PAK PERK DYRK RUNX PP2A PFKFB AP-1 MPS1 Wee1 p21 BMI-1 LIM kinase Nur77 APC
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Cell Culture, Treatment & Working Concentration

Cell Lines	Assay Type	Incubation Time	Activity Description	PMID
COS7	Function assay		Inhibition of transcriptional activity of full-length EWS-FLI1 (unknown origin) expressed in COS7 cells by NR0B1-luciferase reporter gene assay, IC50=0.35μM	25432018
TC71	Growth inhibition assay	3 days	Growth inhibition of human TC71 cells harboring EWS-FLI1 fusion protein after 3 days by WST1 assay, GI50=0.92μM	25432018
TC32	Growth inhibition assay	3 days	Growth inhibition of human TC32 cells harboring EWS-FLI1 fusion protein after 3 days by WST1 assay, GI50=0.94μM	25432018
TC32	qHTS assay		qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for TC32 cells	29435139
DAOY	qHTS assay		qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for DAOY cells	29435139
SJ-GBM2	qHTS assay		qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for SJ-GBM2 cells	29435139
A673	qHTS assay		qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for A673 cells	29435139
SK-N-MC	qHTS assay		qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for SK-N-MC cells	29435139
NB-EBc1	qHTS assay		qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for NB-EBc1 cells	29435139
Saos-2	qHTS assay		qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for Saos-2 cells	29435139
LAN-5	qHTS assay		qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for LAN-5 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
OHS-50	qHTS assay		qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for OHS-50 cells	29435139
RD	qHTS assay		qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for RD cells	29435139
MG 63 (6-TG R)	qHTS assay		qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for MG 63 (6-TG R) cells	29435139
Rh41	qHTS assay		qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for Rh41 cells	29435139
Click to View More Cell Line Experimental Data

Chemical Information, Storage & Stability

Molecular Weight	366.20	Formula	C₁₇H₁₃Cl₂NO₄	Storage (From the date of receipt)	3 years-20°Cpowder
CAS No.	1037184-44-3	Download SDF		Storage of Stock Solutions	1 year-80°Cin solvent 1 month-20°Cin solvent
Synonyms	N/A			Smiles	COC1=CC=C(C=C1)C(=O)CC2(C3=C(C=CC(=C3NC2=O)Cl)Cl)O

Solubility

In vitro
Batch:

DMSO : 73 mg/mL (199.34 mM)
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO.)

Ethanol : 73 mg/mL

Water : 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.
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.	3.650mg/ml (9.97mM)	Taking the 1 mL working solution as an example, add 50 μL of 73 mg/ml clarified DMSO stock solution to 400 μL PEG300, mix evenly to clarify it; add 50 μL Tween80 to the above system, mix evenly to clarify it; then continue to add 500 μL 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.	0.600mg/ml (1.64mM)	Taking the 1 mL working solution as an example, add 50 μL of 12 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	RHA ^[1]
In vitro	YK-4-279 eliminates cyclin D levels by blocking the interaction of EWS-FLI1 with RHA in EWS-FLI1-containing TC32 cells. This compound also specifically inhibits ESFT cell growth and induces apoptosis. ^[1] It also inhibits ERG and ETV1 biological activity in fusion-positive prostate cancer cells, and further decreases cell motility and invasion. ^[2]
In vivo	In vivo, YK-4-279 (1.5 mg/dose i.p.) inhibits the growth of ESFT xenograft tumors. ^[1] In mouse model, this compound selectively prevents prostate cancer growth and metastasis in fusion-positive LNCaP-luc-M6 tumors. ^[3]
References	[1] https://pubmed.ncbi.nlm.nih.gov/19584866/ [2] https://pubmed.ncbi.nlm.nih.gov/21559405/ [3] https://pubmed.ncbi.nlm.nih.gov/25479232/

Applications

Methods	Biomarkers	Images	PMID
Growth inhibition assay	Cell viability		29212266
Western blot	PARP / Cleaved PARP / Caspase 3 / Cleaved Caspase 3 p-HH3(Ser10) / Histone H3 / p-Aurora A (T288) / Aurora A / Aurora B / Cyclin B / p53 / p21		29212266

Tech Support

Handling Instructions

Tel: +1-832-582-8158 Ext:3

If you have any other enquiries, please leave a message.

Frequently Asked Questions

Question 1:
I would like to know whether it is the racemate version, or whether it is the + R-enantiomer or the – S-enantiomer of this compound?

Answer:
For our S7679, it is a recemate.

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