Taletrectinib (DS-6051b)

Catalog No.S8901 Batch:S890101

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Technical Data

Formula

C29H34FN5O5
Molecular Weight 551.61 CAS No. 1505515-69-4
Solubility (25°C)* In vitro DMSO 50 mg/mL (90.64 mM)
Water Insoluble
Ethanol Insoluble
In vivo (Add solvents to the product individually and in order)
Clear solution
5%DMSO Corn oil
2.5mg/ml Taking the 1 mL working solution as an example, add 50 μL of 50 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. 
Clear solution
10% DMSO 40% PEG 300 5%Tween80 45%ddH2O
5.0mg/ml Taking the 1 mL working solution as an example, add 100 μL of 50 mg/ml clarified DMSO stock solution to 400 μL of PEG300, mix evenly to clarify it; add 50 μL of Tween80 to the above system, mix evenly to clarify; then continue to add 450 μL of ddH2O to adjust the volume to 1 mL. The mixed solution should be used immediately for optimal results. 
* <1 mg/ml means slightly soluble or insoluble.
* Please note that Selleck tests the solubility of all compounds in-house, and the actual solubility may differ slightly from published values. This is normal and is due to slight batch-to-batch variations.
* Room temperature shipping (Stability testing shows this product can be shipped without any cooling measures.)

Preparing Stock Solutions

Biological Activity

Description Taletrectinib (DS-6051b, AB-106) is a new-generation selective ROS1/NTRK inhibitor with ic50 of 0.207 nM,0.622 nM,2.28 nM and 0.980 nM for ROS1,NTRK1,NTRK2 and NTRK3,respectively.
Targets
ROS1 [1]
(Cell-free assay)		 TrkA [1]
(Cell-free assay)		 TrkC [1]
(Cell-free assay)		 TrkB [1]
(Cell-free assay)
0.207 nM 0.622 nM 0.980 nM 2.28 nM
In vitro

DS-6051b inhibited the growth of the CD74-ROS1 overexpressed Ba/F3 cells and the ROS1 fusion-positive HCC78 cancer cell line.DS-6051b potently inhibited autophosphorylation of ROS1 in CD74-ROS1–expressed Ba/F3 cells and the SLC34A2-ROS1 harboring HCC78 cells at approximately single-digit to double-digit nanomolar concentration.[1]
In vivo

In vivo experiments using the KM12-bearing mouse xenograft model shows that DS-6051b induced tumor shrinkage at a ≥50 mg/kg or higher treatment dose without significant body weight loss.[1]

Protocol (from reference)

Selleck's Taletrectinib (DS-6051b) has been cited by 5 publications

Novel insight into mechanisms of ROS1 catalytic activation via loss of the extracellular domain [ Sci Rep, 2024, 14(1):22191] PubMed: 39333184
ADK-VR2, a cell line derived from a treatment-naïve patient with SDC4-ROS1 fusion-positive primarily crizotinib-resistant NSCLC: a novel preclinical model for new drug development of ROS1-rearranged NSCLC [ Transl Lung Cancer Res, 2022, 11(11:2216-2229)] PubMed: 36519016
SHP2 Inhibition Enhances the Effects of Tyrosine Kinase Inhibitors in Preclinical Models of Treatment-naïve ALK-, ROS1-, or EGFR-altered Non-small Cell Lung Cancer [ Mol Cancer Ther, 2021, 20(9):1653-1662] PubMed: 34158345
SHP2 inhibition enhances the effects of tyrosine kinase inhibitors in preclinical models of treatment-naïve ALK-, ROS1-, or EGFR-altered non-small-cell lung cancer [ Mol Cancer Ther, 2021, molcanther.0965.2020] PubMed: 34158345
Mechanisms of targeted therapy resistance in a pediatric glioma driven by ETV6-NTRK3 fusion [ Cold Spring Harb Mol Case Stud, 2021, 7(5)a006109] PubMed: 34429303

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SHIPPING AND STORAGE
Selleck products are transported at room temperature. If you receive the product at room temperature, please rest assured, the Selleck Quality Inspection Department has conducted experiments to verify that the normal temperature placement of one month will not affect the biological activity of powder products. After collecting, please store the product according to the requirements described in the datasheet. Most Selleck products are stable under the recommended conditions.

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