PB1
Based on 1 Customer Validation
PB1 is a potent intracellular disulfide reducing agent with several advantages including good cell permeability, the ability to form a high intracellular concentration gradient, and stability. PB1 is a borane-protected TCEP (tris(2-carboxyethyl)phosphine) analogue. PB1 increases retinal ganglion cells survival after axotomy in vitro at nanomolar and picomolar concentrations. PB1 can be used for the research of neuroprotective.
For research use only. We do not sell to patients.
- Purity: 99.47%
- CAS No.: 188714-28-5
- Formula: C14H22BO4P
- Molecular Weight:296.11
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Storage:
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
Tel: 609-228-6898 E-mail: [email protected] [email protected]
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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
Biological Activity
PB1 produces a robust activation of the BDNF effector ERK1/2. PB1 promotes RGC survival[1].
MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.
PB1 protects RGC soma in experimental glaucoma. PB1 single dose limits the biological activity in vivo. PB1 attenuates the loss of both RGC soma and axons in experimental glaucoma. PB1 (0.001~100 μM; 72 hours) is effective at rescuing acutely axotomized retinal ganglion cells[1][2].
MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.
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Animal Model:Sprague-Dawley rats (180~200 g)[1]
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Dosage:150 μM
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Administration:Intraocular injection
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Result:PB1-treated eyes, 66% of RGCs survived at 1 week after axotomy.
Chemical Information
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CAS No. 188714-28-5
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Appearance Liquid
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Molecular Weight 296.11
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Formula C14H22BO4P
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Color Colorless to light yellow
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SMILES
[H-][B+3]([P](CCC(OC)=O)(C1=CC=CC=C1)CCC(OC)=O)([H-])[H-]
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Shipping
Room temperature in continental US; may vary elsewhere.
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Storage
4°C, stored under nitrogen
* In solvent : -80°C, 6 months; -20°C, 1 month (stored under nitrogen)
Solvent & Solubility
DMSO : 100 mg/mL (337.71 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 40% PEG300 5% Tween-80 45% Saline
Solubility: ≥ 2.5 mg/mL (8.44 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.
Add each solvent one by one: 10% DMSO 90% (20% SBE-β-CD in Saline)
Solubility: ≥ 2.5 mg/mL (8.44 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 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. * 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.
Purity & Documentation
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Data Sheet (272 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]. Almasieh M, et al. A cell-permeable phosphine-borane complex delays retinal ganglion cell death after axonal injury through activation of the pro-survival extracellular signal-regulated kinases 1/2 pathway. J Neurochem. 2011;118(6):1075-1086. [Content Brief]
[2]. Schlieve CR, et al. Synthesis and characterization of a novel class of reducing agents that are highly neuroprotective for retinal ganglion cells. Exp Eye Res. 2006;83(5):1252-1259. [Content Brief]
[3]. Niemuth NJ, et al. Intracellular disulfide reduction by phosphine-borane complexes: Mechanism of action for neuroprotection. Neurochem Int. 2016;99:24-32. [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, 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 |
|---|---|---|---|---|---|
| DMSO | 1 mM | 3.3771 mL | 16.8856 mL | 33.7712 mL | 84.4281 mL |
| 5 mM | 0.6754 mL | 3.3771 mL | 6.7542 mL | 16.8856 mL | |
| 10 mM | 0.3377 mL | 1.6886 mL | 3.3771 mL | 8.4428 mL | |
| 15 mM | 0.2251 mL | 1.1257 mL | 2.2514 mL | 5.6285 mL | |
| 20 mM | 0.1689 mL | 0.8443 mL | 1.6886 mL | 4.2214 mL | |
| 25 mM | 0.1351 mL | 0.6754 mL | 1.3508 mL | 3.3771 mL | |
| 30 mM | 0.1126 mL | 0.5629 mL | 1.1257 mL | 2.8143 mL | |
| 40 mM | 0.0844 mL | 0.4221 mL | 0.8443 mL | 2.1107 mL | |
| 50 mM | 0.0675 mL | 0.3377 mL | 0.6754 mL | 1.6886 mL | |
| 60 mM | 0.0563 mL | 0.2814 mL | 0.5629 mL | 1.4071 mL | |
| 80 mM | 0.0422 mL | 0.2111 mL | 0.4221 mL | 1.0554 mL | |
| 100 mM | 0.0338 mL | 0.1689 mL | 0.3377 mL | 0.8443 mL |
PB1 Related Classifications
HY-138648 Related Classifications
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