Fmoc-OSu
Based on 1 Customer Validation
Fmoc-OSu (N-(Fmoc-oxy)succinimide) is an acylating agent that targets amino groups (-NH2). It can selectively protect the amino groups of amino acids by covalently binding with primary or secondary amines through nucleophilic substitution reactions. Fmoc-OSu forms a stable amide bond with the amino group to avoid side reactions of the amino group in peptide synthesis. It can also be used as a fluorescent labeling reagent to react with glycosylamines for efficient labeling of N-sugar chains. Fmoc-OSu can be used as an Fmoc protection strategy in peptide synthesis, and as a fluorescent labeling and analysis method for N-sugar chains.
For research use only. We do not sell to patients.
- Purity: 99.88%
- CAS No.: 82911-69-1
- Formula: C19H15NO5
- Molecular Weight:337.33
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Storage:Powder -20°C, 3 years ; In solvent -80°C, 6 months , -20°C, 1 month
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
Fmoc-OSu (1.25 eq; alkaline conditions) generates Fmoc-β-Ala-OH impurity in the Fmoc protection reaction of H-α-Me-Val-OH, which plays an amino protection role[1].
Fmoc-OSu (150 mM in acetone; incubation at 40°C for 1 h) can be used to prepare free reduced N-glycans through Fmoc release chemistry in N-glycan labeling experiments with microwave-assisted digestion[2].
MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.
Chemical Information
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CAS No. 82911-69-1
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Appearance Solid
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Molecular Weight 337.33
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Formula C19H15NO5
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Color White to off-white
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SMILES
O=C(N1OC(OCC2C3=CC=CC=C3C4=CC=CC=C24)=O)CCC1=O
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Synonyms
N-(Fmoc-oxy)succinimide
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Shipping
Room temperature in continental US; may vary elsewhere.
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Storage
Powder -20°C 3 years In solvent -80°C 6 months -20°C 1 month
Solvent & Solubility
DMSO : 50 mg/mL (148.22 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. 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. 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 (7.41 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 (7.41 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.
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 (279 KB)
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SDS (598 KB)
- English - EN (598 KB)
- Français - FR (598 KB)
- Deutsch - DE (598 KB)
- Norwegian - NO (598 KB)
- Español - ES (598 KB)
- Swedish - SV (598 KB)
- Italian - IT (598 KB)
- Korean - KR (598 KB)
- Portuguese - PT (598 KB)
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Handling Instructions (2659 KB)
References
[1]. Obkircher M, et al. Formation of Fmoc-beta-alanine during Fmoc-protections with Fmoc-OSu. J Pept Sci. 2008 Jun;14(6):763-6. [Content Brief]
[2]. Wang C, et al. Fmoc N-hydroxysuccinimide ester: A facile and multifunctional role in N-glycan analysis. Anal Chim Acta. 2020 Sep 22;1131:56-67. [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. 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 | 2.9645 mL | 14.8223 mL | 29.6446 mL | 74.1114 mL |
| 5 mM | 0.5929 mL | 2.9645 mL | 5.9289 mL | 14.8223 mL | |
| 10 mM | 0.2964 mL | 1.4822 mL | 2.9645 mL | 7.4111 mL | |
| 15 mM | 0.1976 mL | 0.9882 mL | 1.9763 mL | 4.9408 mL | |
| 20 mM | 0.1482 mL | 0.7411 mL | 1.4822 mL | 3.7056 mL | |
| 25 mM | 0.1186 mL | 0.5929 mL | 1.1858 mL | 2.9645 mL | |
| 30 mM | 0.0988 mL | 0.4941 mL | 0.9882 mL | 2.4704 mL | |
| 40 mM | 0.0741 mL | 0.3706 mL | 0.7411 mL | 1.8528 mL | |
| 50 mM | 0.0593 mL | 0.2964 mL | 0.5929 mL | 1.4822 mL | |
| 60 mM | 0.0494 mL | 0.2470 mL | 0.4941 mL | 1.2352 mL | |
| 80 mM | 0.0371 mL | 0.1853 mL | 0.3706 mL | 0.9264 mL | |
| 100 mM | 0.0296 mL | 0.1482 mL | 0.2964 mL | 0.7411 mL |
Fmoc-OSu Related Classifications
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