Biotin-PEG4-NHS ester
Based on 3 publication(s) in Google Scholar
Biotin-PEG4-NHS ester is a biotin-labeled, PEG-based PROTAC linker that can be used in the synthesis of PROTACs.
For research use only. We do not sell to patients.
- Purity: 99.56%
- CAS No.: 459426-22-3
- Formula: C25H40N4O10S
- Molecular Weight:588.67
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Storage:
-20°C, sealed storage, away from moisture and light
* The compound is unstable in solutions, freshly prepared is recommended.
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
Publications Citing Use of MedChemExpress (MCE) Biotin-PEG4-NHS ester
MoreAll PROTAC Linkers Isoforms
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Biological Activity
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PEGs |
PROTACs contain two different ligands connected by a linker; one is a ligand for an E3 ubiquitin ligase and the other is for the target protein. PROTACs exploit the intracellular ubiquitin-proteasome system to selectively degrade target proteins[1].
MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.
Chemical Information
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CAS No. 459426-22-3
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Appearance Solid
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Molecular Weight 588.67
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Formula C25H40N4O10S
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Color White to off-white
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SMILES
O=C(ON1C(CCC1=O)=O)CCOCCOCCOCCOCCNC(CCCC[C@@H]2SC[C@]([C@]2([H])N3)([H])NC3=O)=O
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Shipping
Room temperature in continental US; may vary elsewhere.
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Storage
-20°C, sealed storage, away from moisture and light
* The compound is unstable in solutions, freshly prepared is recommended.
Publications (3)
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Journal Impact Factor
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Most Recent
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J Control Release
Biomimetic siRNA therapeutics attenuate mitochondrial DNA damage and cytokine storm in sepsis. [Abstract]2025 Dec 12:390:114545. PMID: 41391727 -
Pharmaceutics
Dually Modified Cellulose as a Non-Viral Vector for the Delivery and Uptake of HDAC3 siRNA. [Abstract]2023 Nov 23;15(12):2659. PMID: 38140000 -
ACS Biomater Sci Eng
2026 Mar 6. PMID: 41789782
Solvent & Solubility
DMSO : 125 mg/mL (212.34 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. The compound is unstable in solutions, freshly prepared is recommended.
Please refer to the solubility information to select the appropriate solvent. The compound is unstable in solutions, freshly prepared is recommended.
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 (3.53 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 (3.53 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. * The compound is unstable in solutions, freshly prepared is recommended.
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 (269 KB)
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SDS (393 KB)
- English - EN (393 KB)
- Français - FR (393 KB)
- Deutsch - DE (393 KB)
- Norwegian - NO (393 KB)
- Español - ES (393 KB)
- Swedish - SV (393 KB)
- Italian - IT (393 KB)
- Korean - KR (393 KB)
- Portuguese - PT (393 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. The compound is unstable in solutions, freshly prepared is recommended.
| Optional Solvent | Concentration Solvent Mass | 1 mg | 5 mg | 10 mg | 25 mg |
|---|---|---|---|---|---|
| DMSO | 1 mM | 1.6987 mL | 8.4937 mL | 16.9874 mL | 42.4686 mL |
| 5 mM | 0.3397 mL | 1.6987 mL | 3.3975 mL | 8.4937 mL | |
| 10 mM | 0.1699 mL | 0.8494 mL | 1.6987 mL | 4.2469 mL | |
| 15 mM | 0.1132 mL | 0.5662 mL | 1.1325 mL | 2.8312 mL | |
| 20 mM | 0.0849 mL | 0.4247 mL | 0.8494 mL | 2.1234 mL | |
| 25 mM | 0.0679 mL | 0.3397 mL | 0.6795 mL | 1.6987 mL | |
| 30 mM | 0.0566 mL | 0.2831 mL | 0.5662 mL | 1.4156 mL | |
| 40 mM | 0.0425 mL | 0.2123 mL | 0.4247 mL | 1.0617 mL | |
| 50 mM | 0.0340 mL | 0.1699 mL | 0.3397 mL | 0.8494 mL | |
| 60 mM | 0.0283 mL | 0.1416 mL | 0.2831 mL | 0.7078 mL | |
| 80 mM | 0.0212 mL | 0.1062 mL | 0.2123 mL | 0.5309 mL | |
| 100 mM | 0.0170 mL | 0.0849 mL | 0.1699 mL | 0.4247 mL |
Biotin-PEG4-NHS ester Related Classifications
HY-140889 Related Classifications
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