Name: Rigosertib (ON-01910)
Brand: Selleck Chemicals
SKU: S1362
Rating: 5 (36 reviews)

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Quality Control

Batch: Purity: 99.52%

99.52

Related Targets	CDK HSP PD-1/PD-L1 ROCK Wee1 DNA/RNA Synthesis Microtubule Associated Ras KRas Aurora Kinase
Other PLK Inhibitors	Volasertib (BI6727) BI 2536 GSK461364 Onvansertib (NMS-1286937, NMS-P937) CFI-400945 HMN-214 Ro3280 SBE 13 HCl MLN0905 Centrinone (LCR-263)

Cell Culture, Treatment & Working Concentration

Cell Lines	Assay Type	Concentration	Incubation Time	Activity Description	PMID
T47D	Cytotoxicity assay		72 hrs	Cytotoxicity against human T47D cells after 72 hrs by MTT assay, GI50 = 0.01 μM.	21463944
MDA468	Cytotoxicity assay		72 hrs	Cytotoxicity against human MDA468 cells after 72 hrs by MTT assay, GI50 = 0.02 μM.	21463944
MCF7	Cytotoxicity assay		72 hrs	Cytotoxicity against human MCF7 cells after 72 hrs by MTT assay, GI50 = 0.05 μM.	21463944
HCT116	Cytotoxicity assay		72 hrs	Cytotoxicity against human HCT116 cells after 72 hrs by MTT assay, GI50 = 0.05 μM.	21463944
MDA468	Cytotoxicity assay		48 hrs	Cytotoxicity against human MDA468 cells after 48 hrs by MTT assay, GI50 = 0.302 μM.	21463944
MDA468	Cytotoxicity assay		24 hrs	Cytotoxicity against human MDA468 cells after 24 hrs by MTT assay, GI50 = 0.601 μM.	21463944
MRC5	Cytotoxicity assay		72 hrs	Cytotoxicity against human MRC5 cells after 72 hrs by MTT assay, GI50 = 0.71 μM.	21463944
MCF7	Function assay	1 uM		Metabolic stability of the compound in human MCF7 cells at 1 uM	21463944
MRC5	Function assay	1 uM		Metabolic stability of the compound in human MRC5 cells at 1 uM	21463944
K562	Cytotoxicity assay		96 hrs	Cytotoxicity against human K562 cells after 96 hrs by trypan blue exclusion assay, IC50 = 0.0075 μM.	21812421
DU145	Cytotoxicity assay		96 hrs	Cytotoxicity against human DU145 cells after 96 hrs by trypan blue exclusion assay, IC50 = 0.075 μM.	21812421
HeLa	Antiproliferative assay		72 hrs	Antiproliferative activity against human HeLa cells assessed as cell growth inhibition after 72 hrs by MTT assay, GI50 = 0.012 μM.	24471873
LNCAP	Antiproliferative assay		72 hrs	Antiproliferative activity against AR positive human LNCAP cells assessed as cell growth inhibition after 72 hrs by MTT assay, GI50 = 0.025 μM.	24471873
PANC1	Antiproliferative assay		72 hrs	Antiproliferative activity against human PANC1 cells assessed as cell growth inhibition after 72 hrs by MTT assay, GI50 = 0.039 μM.	24471873
MCF7	Antiproliferative assay		72 hrs	Antiproliferative activity against ER positive human MCF7 cells assessed as cell growth inhibition after 72 hrs by MTT assay, GI50 = 0.05 μM.	24471873
MCF7	Antiproliferative assay		72 hrs	Antiproliferative activity against human MCF7 cells assessed as cell growth inhibition after 72 hrs by MTT assay, GI50 = 0.05 μM.	24471873
MDA-MB-231	Antiproliferative assay		72 hrs	Antiproliferative activity against ER negative human MDA-MB-231 cells assessed as cell growth inhibition after 72 hrs by MTT assay, GI50 = 0.057 μM.	24471873
A2780	Antiproliferative assay		72 hrs	Antiproliferative activity against human A2780 cells assessed as cell growth inhibition after 72 hrs by MTT assay, GI50 = 0.062 μM.	24471873
HCT116	Antiproliferative assay		72 hrs	Antiproliferative activity against human HCT116 cells assessed as cell growth inhibition after 72 hrs by MTT assay, GI50 = 0.07 μM.	24471873
DU145	Antiproliferative assay		72 hrs	Antiproliferative activity against AR negative human DU145 cells assessed as cell growth inhibition after 72 hrs by MTT assay, GI50 = 0.075 μM.	24471873
A2780	Function assay	0.25 uM	24 hrs	Reduction in CDC25C level in human A2780 cells at 0.25 uM after 24 hrs by Western blot analysis	24471873
A2780	Apoptosis assay	0.25 uM	24 hrs	Induction of apoptosis in human A2780 cells assessed as caspase-3/7 activation at 0.25 uM after 24 hrs by using Apo-ONE homogeneous caspase-3/7 kit	24471873
A2780	Function assay	0.25 uM	24 hrs	Reduction in Mcl1 level in human A2780 cells at 0.25 uM after 24 hrs by Western blot analysis	24471873
Click to View More Cell Line Experimental Data

Chemical Information, Storage & Stability

Molecular Weight	473.47	Formula	C₂₁H₂₄NNaO₈S	Storage (From the date of receipt)	3 years-20°Cpowder
CAS No.	1225497-78-8	Download SDF		Storage of Stock Solutions	1 year-80°Cin solvent 1 month-20°Cin solvent
Synonyms	N/A			Smiles	COC1=C(C=C(C=C1)CS(=O)(=O)C=CC2=C(C=C(C=C2OC)OC)OC)NCC(=O)[O-].[Na+]

Solubility

In vitro
Batch:

DMSO : 94 mg/mL (198.53 mM)
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO.)

Water : 94 mg/mL

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.
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	water Validated by Selleck labs. Should you need adjustments to this formulation, contact our sales team for custom testing.	95.000mg/ml (200.65mM)	Taking the 1 mL working solution as an example, add 95 mg of this product to 1 ml of ddH2O, 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+ %

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	PLK1 (Cell-free assay) 9 nM PDGFR (Cell-free assay) 18 nM Bcr-Abl (Cell-free assay) 32 nM Flt1 (Cell-free assay) 42 nM Src (Cell-free assay) 155 nM Fyn (Cell-fre assay) 182 nM CDK1 (Cell-free assay) 260 nM PLK2 (Cell-free assay) 260 nM
In vitro	Rigosertib (ON-01910) is a non-ATP-competitive inhibitor of PLK1 with an IC50 of 9 nM. It also exhibits inhibition against PLK2, PDGFR, Flt1, BCR-ABL, Fyn, Src, and CDK1, with IC50s of 18-260 nM. This compound shows cell killing activity against 94 different tumour cell lines with an IC50 of 50-250 nM, including BT27, MCF-7, DU145, PC3, U87, A549, H187, RF1, HCT15, SW480, and KB cells. While in normal cells, such as HFL, PrEC, HMEC, and HUVEC, it has little or no effect unless its concentration is greater than 5-10 μM. In HeLa cells, Rigosertib (100-250 nM) induces spindle abnormalities and apoptosis. It also inhibits several multidrug-resistant tumour cell lines, including MES-SA, MES-SA/DX5a, CEM, and CEM/C2a, with IC50s of 50-100 nM. In DU145 cells, this compound (0.25-5 μM) blocks cell cycle progression in G2/M phase, results in an accumulation of cells containing subG1 content of DNA, and activates apoptotic pathways. In A549 cells, it (50 nM-0.5 μM) induces loss of viability and caspase 3/7 activation. In a recent study, Rigosertib induces apoptosis in chronic lymphocytic leukaemia (CLL) cells without toxicity against T-cells or normal B-cells. It also abrogates the pro-survival effect of follicular dendritic cells on CLL cells and reduces SDF-1-induced migration of leukaemic cells.
Kinase Assay	In vitro enzyme assays for PLK1
Kinase Assay	Recombinant PLK1 (10 ng) is incubated with different concentrations of Rigosertib (ON-01910) in a 15 µL reaction mixture (50 mM HEPES, 10 mM MgCl₂, 1 mM EDTA, 2 mM Dithiothreitol, 0.01% NP-40 [pH 7.5]) for 30 min at room temperature. Kinase reactions are performed for 20 min at 30 °C in a volume of 20 µL (15 µL enzyme + this compound, 2 µL 1 mM ATP), 2 µL of γ³²P-ATP (40 μCi), and 1 µL of recombinant Cdc25C (100 ng) or casein (1 μg) substrates. Reactions are terminated by boiling for 2 min in 20 µL of 2× Laemmli buffer. Phosphorylated substrates are separated by 18% SDS-PAGE. The gels are dried and exposed to X-ray film for 3-10 min.
In vivo	In mouse xenograft models of Bel-7402, MCF-7, and MIA-PaCa cells, Rigosertib (ON-01910) (250 mg/kg) markedly inhibits tumour growth. This compound (200 mg/kg) also shows inhibition of tumour growth in a mouse xenograft model of BT20 cells.
References	[1] https://pubmed.ncbi.nlm.nih.gov/15766665/ [2] https://pubmed.ncbi.nlm.nih.gov/21812421/ [3] https://pubmed.ncbi.nlm.nih.gov/22351695/

Applications

Methods	Biomarkers	PMID
Western blot	pAbl / Abl / PCrk-L / Crk-L / Cleaved caspase3 / Cleaved PARP / pHistone H2A.X	26008977
Immunofluorescence	p-ATF / COX IV	27764820
Growth inhibition assay	GI50 Cell viability	29108241

Clinical Trial Information

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

NCT Number	Recruitment	Conditions	Sponsor/Collaborators	Start Date	Phases
NCT04177498	Recruiting	Recessive Dystrophic Epidermolysis Bullosa	Thomas Jefferson University\|Traws Pharma Inc.	August 24 2021	Early Phase 1
NCT02075034	Withdrawn	Myelodysplastic Syndrome	Traws Pharma Inc.	May 2014	Phase 1
NCT02030639	Completed	Healthy	Traws Pharma Inc.	January 2014	Phase 1
NCT01928537	Completed	Myelodysplastic Syndromes\|Refractory Anemia With Excess Blasts\|Chronic Myelomonocytic Leukemia\|Cytopenia	Traws Pharma Inc.	August 2013	Phase 3
NCT01807546	Completed	Head and Neck Squamous Cell Carcinoma\|Anal Squamous Cell Carcinoma\|Lung Squamous Cell Carcinoma\|Cervical Squamous Cell Carcinoma\|Esophageal Squamous Cell Carcinoma\|Skin Squamous Cell Carcinoma\|Penile Squamous Cell Carcinoma	Traws Pharma Inc.	March 2013	Phase 2
NCT01168011	Completed	Solid Tumor	Traws Pharma Inc.	July 2010	Phase 1

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Rigosertib (ON-01910) PLK inhibitor

Chemical Structure

Molecular Weight: 473.47