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Bis-sulfone-PEG4-NHS ester is a bifunctional alkylating labeling reagent that selectively removes cysteine sulfur atoms from native disulfide bonds. These reagents perform bis-alkylation to attach both thiols from two cysteine residues, originating from reduced native disulfide bonds (such as interchain disulfide bonds in antibodies). The reaction results in a covalent bond through a three-carbon bridge, maintaining the protein's structural integrity. The hydrophilic PEG spacer enhances its solubility in aqueous media.

| Pack Size | Price | USA Warehouse | Global Warehouse | Quantity |
|---|---|---|---|---|
| 10 mg | Inquiry | Inquiry | Inquiry | |
| 50 mg | Inquiry | Inquiry | Inquiry |
| Description | Bis-sulfone-PEG4-NHS ester is a bifunctional alkylating labeling reagent that selectively removes cysteine sulfur atoms from native disulfide bonds. These reagents perform bis-alkylation to attach both thiols from two cysteine residues, originating from reduced native disulfide bonds (such as interchain disulfide bonds in antibodies). The reaction results in a covalent bond through a three-carbon bridge, maintaining the protein's structural integrity. The hydrophilic PEG spacer enhances its solubility in aqueous media. |
| Molecular Weight | 844.944 |
| Formula | C40H48N2O14S2 |
| Cas No. | 2055047-19-1 |
| Smiles | O=C(ON1C(=O)CCC1=O)CCOCCOCCOCCOCCNC(=O)C2=CC=C(C=C2)C(=O)C(CS(=O)(=O)C3=CC=C(C=C3)C)CS(=O)(=O)C4=CC=C(C=C4)C |
| Storage | Powder: -20°C for 3 years | In solvent: -80°C for 1 year |
Dissolve 2 mg of the compound in 100 μL DMSO
to obtain a stock solution at a concentration of 20 mg/mL . If the required concentration exceeds the compound's known solubility, please contact us for technical support before proceeding.
1) Add 100 μL of the DMSO
stock solution to 400 μL PEG300
and mix thoroughly until the solution becomes clear.
2) Add 50 μL Tween 80 and mix well until fully clarified.
3) Add 450 μL Saline,PBS or ddH2O
and mix thoroughly until a homogeneous solution is obtained.
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