Pirtobrutinib
Based on 9 publication(s) in Google Scholar
Pirtobrutinib (LOXO-305), a highly selective and non-covalent next generation BTK inhibitor, inhibits diverse BTK C481 substitution mutations. Pirtobrutinib causes regression of BTK-dependent lymphoma tumors in mouse xenograft models. Pirtobrutinib is also more than 300-fold selective for BTK versus 370 other kinases tested and shows no significant inhibition of non-kinase off-targets at 1 μM.
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- Purity: 99.90%
- CAS No.: 2101700-15-4
- 화학식: C22H21F4N5O3
- 분자량:479.43
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보관:
4°C, stored under nitrogen
* In solvent : -80°C, 6 months; -20°C, 1 month (stored under nitrogen)
To place orders, for customer services and technical support, please contact: MedChemExpress USA
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Biological Activity
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Chemical Information
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용액&용해도
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Publications Citing Use of MedChemExpress (MCE) Pirtobrutinib
More- Blood Cancer J. 2026 May 7;16(1):107. [Abstract]
- Blood Adv. 2026 Jul 14;10(13):4450-4454. [Abstract]
- Blood Adv. 2026 Jun 5:bloodadvances.2025019077. [Abstract]
- ACS Pharmacol Transl Sci. 2025 Mar 12;8(4):917-931. [Abstract]
- Leuk Res. 2024 Sep:144:107548. [Abstract]
- Res Sq. 2026 Apr 22.
- bioRxiv. 2025 May 10:2025.05.07.652612. [Abstract]
- bioRxiv. 2024 September 08.
- bioRxiv. 2024 Oct 10:2023.12.18.572223. [Abstract]
Customer Validation & Images
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WB
Biological Activity
Pirtobrutinib potently inhibits both wild-type BTK and BTK C481S-mediated kinase activity with nanomolar potency. Pirtobrutinib inhibits WT BTK (Y223) autophosphorylation with an IC50 of 3.68 nM. Pirtobrutinib inhibits BTK C481S Y223, C481T Y223, and C481R Y223 autophosphorylation with IC50s of 8.45, 7.23, and 11.73 nM, respectively[1].
MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.
| NCT Number | Sponsor | Condition | Start Date |
Phase
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|---|---|---|---|---|
| NCT01329991 | Plexxikon| | 2011-05 | PHASE1 |
Chemical Information
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CAS No. 2101700-15-4
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Appearance Solid
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분자량 479.43
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화학식 C22H21F4N5O3
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Color White to yellow
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SMILES
O=C(C1=C(N)N([C@@H](C)C(F)(F)F)N=C1C2=CC=C(CNC(C3=CC(F)=CC=C3OC)=O)C=C2)N
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Synonyms
LOXO-305
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선적
Room temperature in continental US; may vary elsewhere.
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보관
4°C, stored under nitrogen
* In solvent : -80°C, 6 months; -20°C, 1 month (stored under nitrogen)
Publications (9)
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Journal Impact Factor
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Most Recent
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Blood Cancer J
Docirbrutinib is a pan-mutant BTK inhibitor and inhibits B-cell receptor signaling in chronic lymphocytic leukemia cells in preclinical and early clinical investigations. [Abstract]2026 May 7;16(1):107. PMID: 42098067 -
Blood Adv
Zanubrutinib and pirtobrutinib show synergistic killing and suppression of BTK signaling in MYD88-mutated lymphoma cells. [Abstract]2026 Jul 14;10(13):4450-4454. PMID: 41985014 -
Blood Adv
PLCG2 Exon-Skipped Variants: Insights into Their Potential Role in Chronic Lymphocytic Leukemia. [Abstract]2026 Jun 5:bloodadvances.2025019077. PMID: 42263669 -
ACS Pharmacol Transl Sci
Comprehensive Characterization of Bruton's Tyrosine Kinase Inhibitor Specificity, Potency, and Biological Effects: Insights into Covalent and Noncovalent Mechanistic Signatures. [Abstract]2025 Mar 12;8(4):917-931. PMID: 40242575 -
Leuk Res
PI3K/AKT confers intrinsic and acquired resistance to pirtobrutinib in chronic lymphocytic leukemia. [Abstract]2024 Sep:144:107548. PMID: 39018782
Pirtobrutinib purchased from MedChemExpress. Usage Cited in: Leuk Res. 2024 Sep:144:107548. [Abstract]
Cells were treated with 1 μM of Pirtobrutinib, CAL101, and MK2206 for 24 hours prior to protein extraction. GAPDH was used as a loading control to ensure equal protein amounts in each sample.
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bioRxiv
2025 May 10:2025.05.07.652612. PMID: 40654846 -
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bioRxiv
Impact of the clinically approved BTK inhibitors on the conformation of full-length BTK and analysis of the development of BTK resistance mutations in chronic lymphocytic leukemia. [Abstract]2024 Oct 10:2023.12.18.572223. PMID: 38187560
용액&용해도
DMSO : 50 mg/mL (104.29 mM; Need ultrasonic; Hygroscopic DMSO has a significant impact on the solubility of product, please use newly opened DMSO)
Please refer to the solubility information to select the appropriate solvent. Once prepared, please aliquot and store the solution to prevent product inactivation from repeated freeze-thaw cycles.
Storage method and period of stock solution: -80°C, 6 months; -20°C, 1 month (stored under nitrogen). When stored at -80°C, please use it within 6 months. When stored at -20°C, please use it within 1 month.
Please refer to the solubility information to select the appropriate solvent. Once prepared, please aliquot and store the solution to prevent product inactivation from repeated freeze-thaw cycles.
Storage method and period of stock solution: -80°C, 6 months; -20°C, 1 month (stored under nitrogen). When stored at -80°C, please use it within 6 months. When stored at -20°C, please use it within 1 month.
Concentration (start) × Volume (start) = Concentration (final) × Volume (final)
Select the appropriate dissolution method based on your experimental animal and administration route.
- For the following dissolution methods, please ensure to first prepare a clear stock solution using an In Vitro approach and then sequentially add co-solvents:
- To ensure reliable experimental results, the clarified stock solution can be appropriately stored based on storage conditions. As for the working solution for In Vivo experiments, it is recommended to prepare freshly and use it on the same day.
- The percentages shown for the solvents indicate their volumetric ratio in the final prepared solution. If precipitation or phase separation occurs during preparation, heat and/or sonication can be used to aid dissolution.
Add each solvent one by one: 10% DMSO 90% (20% SBE-β-CD in Saline)
Solubility: 2.75 mg/mL (5.74 mM); Suspended solution; Need ultrasonic
This protocol yields a suspended solution of 2.75 mg/mL. Suspended solution can be used for oral and intraperitoneal injection.
Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (27.5 mg/mL) to 900 μL 20% SBE-β-CD in Saline, and mix evenly.
Preparation of 20% SBE-β-CD in Saline (4°C, storage for one week): 2 g SBE-β-CD powder is dissolved in 10 mL Saline, completely dissolve until clear.
Add each solvent one by one: 10% DMSO 40% PEG300 5% Tween-80 45% Saline
Solubility: ≥ 2.5 mg/mL (5.21 mM); Clear solution
This protocol yields a clear solution of ≥ 2.5 mg/mL (saturation unknown).
Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (25.0 mg/mL) to 400 μL PEG300, and mix evenly; then add 50 μL Tween-80 and mix evenly; then add 450 μL Saline to adjust the volume to 1 mL.
Preparation of Saline: Dissolve 0.9 g sodium chloride in ddH₂O and dilute to 100 mL to obtain a clear Saline solution.
For the following dissolution methods, please prepare the working solution directly:
It is recommended to prepare fresh solutions and use them promptly within a short period of time.
The percentages shown for the solvents indicate their volumetric ratio in the final prepared solution. If precipitation or phase separation occurs during preparation, heat and/or sonication can be used to aid dissolution.
Add each solvent one by one: 50% PEG300 50% Saline
Solubility: 10 mg/mL (20.86 mM); Suspended solution; Need ultrasonic
Please enter the basic information of animal experiments:
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Recommended: Prepare an additional quantity of animals to account for potential losses during experiments.
Please enter your animal formula composition:
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%DMSO +
Recommended: Keep the proportion of DMSO in working solution below 2% if your animal is weak.
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%+
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+%Tween-80 + +
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%Saline +
The co-solvents required include: DMSO, . All of co-solvents are available by MedChemExpress (MCE). , Tween 80. All of co-solvents are available by MedChemExpress (MCE).
Working solution concentration: 0.22 mg/mL
Method for preparing stock solution: mg drug dissolved in μL DMSO. Stock solution concentration: mg/mL. * In solvent : -80°C, 6 months; -20°C, 1 month (stored under nitrogen)
1. Take μL DMSO stock solution;
2. Add μL .
μL , mix evenly;
3. Then add μL Tween 80, mix evenly;
4. Then add μL
Please ensure that the stock solution in the first step is dissolved to a clear state, and add co-solvents in sequence. You can use ultrasonic heating (ultrasonic cleaner, recommended frequency 20-40 kHz), vortexing, etc. to assist dissolution.
순도&문서
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Data Sheet (274 KB)
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SDS (394 KB)
- English - EN (394 KB)
- Français - FR (394 KB)
- Deutsch - DE (394 KB)
- Norwegian - NO (394 KB)
- Español - ES (394 KB)
- Swedish - SV (394 KB)
- Italian - IT (394 KB)
- Korean - KR (394 KB)
- Portuguese - PT (394 KB)
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Handling Instructions (2659 KB)
References
Complete Stock Solution Preparation Table
Please refer to the solubility information to select the appropriate solvent. Once prepared, please aliquot and store the solution to prevent product inactivation from repeated freeze-thaw cycles.
Storage method and period of stock solution: -80°C, 6 months; -20°C, 1 month (stored under nitrogen). When stored at -80°C, please use it within 6 months. When stored at -20°C, please use it within 1 month.
| Optional Solvent | Concentration Solvent Mass | 1 mg | 5 mg | 10 mg | 25 mg |
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| DMSO | 1 mM | 2.0858 mL | 10.4291 mL | 20.8581 mL | 52.1453 mL |
| 5 mM | 0.4172 mL | 2.0858 mL | 4.1716 mL | 10.4291 mL | |
| 10 mM | 0.2086 mL | 1.0429 mL | 2.0858 mL | 5.2145 mL | |
| 15 mM | 0.1391 mL | 0.6953 mL | 1.3905 mL | 3.4764 mL | |
| 20 mM | 0.1043 mL | 0.5215 mL | 1.0429 mL | 2.6073 mL | |
| 25 mM | 0.0834 mL | 0.4172 mL | 0.8343 mL | 2.0858 mL | |
| 30 mM | 0.0695 mL | 0.3476 mL | 0.6953 mL | 1.7382 mL | |
| 40 mM | 0.0521 mL | 0.2607 mL | 0.5215 mL | 1.3036 mL | |
| 50 mM | 0.0417 mL | 0.2086 mL | 0.4172 mL | 1.0429 mL | |
| 60 mM | 0.0348 mL | 0.1738 mL | 0.3476 mL | 0.8691 mL | |
| 80 mM | 0.0261 mL | 0.1304 mL | 0.2607 mL | 0.6518 mL | |
| 100 mM | 0.0209 mL | 0.1043 mL | 0.2086 mL | 0.5215 mL |
Pirtobrutinib Related Classifications
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