Reldesemtiv
Based on 2 publication(s) in Google Scholar
Reldesemtiv (CK-2127107) is a selective, orally active and next-generation fast skeletal muscle troponin activator (FSTA). Reldesemtiv selectively activates fast skeletal myofibrils with an EC50 of 3.4 μM. Reldesemtiv increases exercise performance in a heart failure model.
For research use only. We do not sell to patients.
- Purity: 99.63%
- CAS No.: 1345410-31-2
- Formula: C19H18F2N6O
- Molecular Weight:384.38
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Storage:Powder -20°C, 3 years , 4°C, 2 years ; In solvent -80°C, 2 years , -20°C, 1 year
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Biological Activity
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Chemical Information
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Solvent & Solubility
- Purity & Documentation
- References
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Help & FAQs
Publications Citing Use of MedChemExpress (MCE) Reldesemtiv
MoreAll Calcium Channel Isoforms
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Biological Activity
Reldesemtiv selectively binds to and sensitizes the fast skeletal troponin complex to calcium[1].
MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.
Reldesemtiv (10 mg/kg; i.v.) increases Ca2+ sensitivity in fast skeletal muscle fibers and increases muscle force in response to submaximal stimulation frequencies in LAD-HF rats[1].
Reldesemtiv increases sarcomeric Ca2+ sensitivity in skinned LAD-HF skeletal fibers[1].
MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.
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Animal Model:Female Sprague-Dawley rats (Sham and left anterior descending coronary artery (LAD) heart failure (LAD-HF))[1]
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Dosage:10 mg/kg
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Administration:p.o.
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Result:Increased performance time by approximately 150% in LAD-HF rats (116±22 versus 283±47 seconds).
| NCT Number | Sponsor | Condition | Start Date |
Phase
|
|---|---|---|---|---|
| NCT01329991 | Plexxikon| | 2011-05 | PHASE1 |
Chemical Information
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CAS No. 1345410-31-2
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Appearance Solid
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Molecular Weight 384.38
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Formula C19H18F2N6O
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Color White to off-white
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SMILES
O=C(C1=CN(C2=CN=C(NC[C@]3(C4=NC=CC=C4F)C[C@H](F)C3)N=C2)C=C1)N
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Synonyms
CK-2127107
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Shipping
Room temperature in continental US; may vary elsewhere.
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Storage
Powder -20°C 3 years 4°C 2 years In solvent -80°C 2 years -20°C 1 year
Publications (2)
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Journal Impact Factor
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Most Recent
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Hum Mol Genet
Neuromuscular junction transcriptome analysis of spinal and bulbar muscular atrophy mice implicates sarcomere gene expression and calcium flux dysregulation in disease pathogenesis. [Abstract]2025 May 14:ddaf074. PMID: 40366765 -
Drug Test Anal
Identification of human metabolites of fast skeletal troponin activators Tirasemtiv and Reldesemtiv for doping control purposes. [Abstract]2025 Jun;17(6):812-824. PMID: 39138120
Solvent & Solubility
DMSO : 250 mg/mL (650.40 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, 2 years; -20°C, 1 year. When stored at -80°C, please use it within 2 years. When stored at -20°C, please use it within 1 year.
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, 2 years; -20°C, 1 year. When stored at -80°C, please use it within 2 years. When stored at -20°C, please use it within 1 year.
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 40% PEG300 5% Tween-80 45% Saline
Solubility: ≥ 2.08 mg/mL (5.41 mM); Clear solution
This protocol yields a clear solution of ≥ 2.08 mg/mL (saturation unknown).
Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (20.8 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.
Add each solvent one by one: 10% DMSO 90% (20% SBE-β-CD in Saline)
Solubility: ≥ 2.08 mg/mL (5.41 mM); Clear solution
This protocol yields a clear solution of ≥ 2.08 mg/mL (saturation unknown).
Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (20.8 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.
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.
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.
Purity & Documentation
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Data Sheet (274 KB)
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SDS (252 KB)
- English - EN (252 KB)
- Français - FR (252 KB)
- Deutsch - DE (252 KB)
- Norwegian - NO (252 KB)
- Español - ES (252 KB)
- Swedish - SV (252 KB)
- Italian - IT (252 KB)
- Korean - KR (252 KB)
- Portuguese - PT (252 KB)
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Handling Instructions (2659 KB)
References
[1]. Hwee DT, et al. The small-molecule fast skeletal troponin activator, CK-2127107, improves exercise tolerance in a rat model of heart failure. J Pharmacol Exp Ther. 2015 Apr;353(1):159-68. [Content Brief]
[2]. Andrews JA, et al. CK-2127107 amplifies skeletal muscle response to nerve activation in humans. Muscle Nerve. 2018 May;57(5):729-734. [Content Brief]
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, 2 years; -20°C, 1 year. When stored at -80°C, please use it within 2 years. When stored at -20°C, please use it within 1 year.
| Optional Solvent | Concentration Solvent Mass | 1 mg | 5 mg | 10 mg | 25 mg |
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| DMSO | 1 mM | 2.6016 mL | 13.0080 mL | 26.0159 mL | 65.0398 mL |
| 5 mM | 0.5203 mL | 2.6016 mL | 5.2032 mL | 13.0080 mL | |
| 10 mM | 0.2602 mL | 1.3008 mL | 2.6016 mL | 6.5040 mL | |
| 15 mM | 0.1734 mL | 0.8672 mL | 1.7344 mL | 4.3360 mL | |
| 20 mM | 0.1301 mL | 0.6504 mL | 1.3008 mL | 3.2520 mL | |
| 25 mM | 0.1041 mL | 0.5203 mL | 1.0406 mL | 2.6016 mL | |
| 30 mM | 0.0867 mL | 0.4336 mL | 0.8672 mL | 2.1680 mL | |
| 40 mM | 0.0650 mL | 0.3252 mL | 0.6504 mL | 1.6260 mL | |
| 50 mM | 0.0520 mL | 0.2602 mL | 0.5203 mL | 1.3008 mL | |
| 60 mM | 0.0434 mL | 0.2168 mL | 0.4336 mL | 1.0840 mL | |
| 80 mM | 0.0325 mL | 0.1626 mL | 0.3252 mL | 0.8130 mL | |
| 100 mM | 0.0260 mL | 0.1301 mL | 0.2602 mL | 0.6504 mL |
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