[CAS NO. 1373431-65-2]  Talazoparib tosylate

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PRODUCTS SPECIFICATIONS [1373431-65-2]

Catalog
HY-108413
Brand
MCE
CAS
1373431-65-2

DESCRIPTION [1373431-65-2]

Overview

MDL-
Molecular Weight552.55
Molecular FormulaC26H22F2N6O4S
SMILESO=C1NN=C2C3=C1C=C(F)C=C3N[C@H](C4=CC=C(F)C=C4)[C@H]2C5=NC=NN5C.O=S(C6=CC=C(C)C=C6)(O)=O

For research use only. We do not sell to patients.

45 Publications Citing Use of MCE


Summary

Talazoparib tosylate (BMN 673ts) is a novel, potent and orally available PARP1/2 inhibitor with an IC 50 of 0.57 nM for PARP1 .


IC50 & Target

IC50: 0.57 nM (PARP1) [1]


In Vitro

Talazoparib is a potent PARP1/2 inhibitor (PARP1 IC 50 =0.57 nM), it has no effect on PARG activity at concentrations up to 1 μM. Talazoparib binds to PARP1 with a dissociation constant (K D ) of 0.29 nM. Talazoparib inhibits PARP1 and -2 to a similar extent, with K i s of 1.20 and 0.85 nM, respectively. Talazoparib selectively targets tumor cells with BRCA1, BRCA2, or PTEN gene defects with 20- to more than 200-fold greater potency than existing PARP1/2 inhibitors. Talazoparib targets tumor cells with homologous recombination gene defects. Tumor models that are either BRCA1-deficient (MX-1 and SUM149) or BRCA2-deficient (Capan-1) are profoundly sensitive to Talazoparib. Talazoparib induces nuclear γ-H2AX foci at concentrations as low as 100 pM [1] .

MCE has not independently confirmed the accuracy of these methods. They are for reference only.


In Vivo

Talazoparib is readily orally bioavailable, with more than 40% absolute oral bioavailability in rats when dosed in carboxylmethyl cellulose. Oral administration of Talazoparib elicits remarkable antitumor activity; xenografted tumors that carry defects in DNA repair due to BRCA mutations or PTEN deficiency are profoundly sensitive to oral Talazoparib treatment at well-tolerated doses in mice. Synergistic or additive antitumor effects are also found when Talazoparib is combined with temozolomide, SN38, or platinum drugs [1] .

MCE has not independently confirmed the accuracy of these methods. They are for reference only.


Clinical Trial

NCT Number Sponsor Condition Start Date Phase
NCT05059522 Pfizer
Advanced Malignancies|NSCLC|Ovarian Cancer|Urothelial Cancer|Solid Tumors
September 29, 2021 Phase 3
NCT04690855 Mylin A. Torres, MD|Genentech, Inc.|Pfizer|Emory University|Hoosier Cancer Research Network
Breast Cancer|Triple Negative Breast Cancer
April 1, 2021 Phase 2
NCT02127151 University College, London|Medivation, Inc.
Endometrial Cancer
October 1, 2014 Phase 2

Appearance

Solid


Shipping

Room temperature in continental US; may vary elsewhere.


Storage

4°C, sealed storage, away from moisture

* In solvent : -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture)


Solvent & Solubility

In Vitro:

DMSO : ≥ 108 mg/mL ( 195.46 mM )

* "≥" means soluble, but saturation unknown.

Preparing
Stock Solutions
Concentration Solvent Mass 1 mg 5 mg 10 mg
1 mM 1.8098 mL 9.0490 mL 18.0979 mL
5 mM 0.3620 mL 1.8098 mL 3.6196 mL
10 mM 0.1810 mL 0.9049 mL 1.8098 mL
* Please refer to the solubility information to select the appropriate solvent.
In Vivo:
  • 1.

    Add each solvent one by one: 10% DMSO >> 40% PEG300 >> 5% Tween-80 >> 45% saline

    Solubility: ≥ 2.5 mg/mL (4.52 mM); Clear solution

  • 2.

    Add each solvent one by one: 10% DMSO >> 90% corn oil

    Solubility: ≥ 2.5 mg/mL (4.52 mM); Clear solution

* All of the co-solvents are available by MCE.