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umbralisib (TGR-1202) PI3K inhibitor

Cat.No.S8194

Umbralisib (TGR-1202, Rp-5264), a novel, next generation PI3Kδ inhibitor, inhibits PI3Kδ activity in enzyme and cell based assays with IC50 and EC50 values of 22.2 & 24.3 nM, respectively.
umbralisib (TGR-1202) PI3K inhibitor Chemical Structure

Chemical Structure

Molecular Weight: 571.55

Quality Control

Chemical Information, Storage & Stability

Molecular Weight 571.55 Formula

C31H24F3N5O3

Storage (From the date of receipt)
CAS No. 1532533-67-7 Download SDF Storage of Stock Solutions

Synonyms Rp-5264 Smiles CC(C)OC1=C(C=C(C=C1)C2=NN(C3=NC=NC(=C23)N)C(C)C4=C(C(=O)C5=C(O4)C=CC(=C5)F)C6=CC(=CC=C6)F)F

Solubility

In vitro
Batch:

DMSO : 100 mg/mL (174.96 mM)
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO.)

Ethanol : 6 mg/mL

Water : Insoluble

Molarity Calculator

Mass Concentration Volume Molecular Weight

In vivo
Batch:

In vivo Formulation Calculator (Clear solution)

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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.
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Mechanism of Action

Targets/IC50/Ki
PI3Kδ [1]
(Cell-free assay)
22.2 nM
In vitro
The compound displays a high degree of selectivity over the alpha (>1000 fold), beta (>30-50 fold), and gamma (>15-50 fold) isoforms. Additionally, the compound causes a half-maximal inhibition of human whole blood CD19 cell proliferation between 100-300 nM. Treatment of PBMC with RP5264 results initially in a G2/M arrest followed by subsequent increase in the number of Sub G0 cells. Viability assays demonstrate that the compound causes a significant inhibition in growth as well as Akt phosphorylation of immortalized and primary leukemic cells[1].
In vivo
The compound exhibits good oral absorption with favourable pharmacokinetic properties in rodents. It also has an excellent safety profile[1].
References

Clinical Trial Information

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

NCT Number Recruitment Conditions Sponsor/Collaborators Start Date Phases
NCT03207256 Terminated
Chronic Lymphocytic Leukemia|Non Hodgkin Lymphoma
TG Therapeutics Inc.
August 9 2017 Phase 2
NCT03178201 Terminated
Follicular Lymphoma
Columbia University|TG Therapeutics Inc.
August 20 2017 Phase 2
NCT02867618 Terminated
Hodgkin Disease|Lymphoma Non-hodgkin
Columbia University
October 16 2016 Phase 1|Phase 2
NCT02493530 Active not recruiting
Myelofibrosis|Polycythemia Vera
Vanderbilt-Ingram Cancer Center
July 2015 Phase 1

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