DBCO-dPEG®12-TFP ester, product number QBD-11366, is a heterobifunctional, bioorthogonal crosslinker designed to join azides and amines across a medium-length (40 atoms, 46.3 Å), flexible, hydrophilic, single molecular weight, discrete PEG (dPEG®) spacer. The tetrafluorophenyl (TFP) ester reacts specifically with free amines to form amide bonds; the optimum reaction pH is 7.5 – 8.0. The dibenzylcyclooctyne (DBCO) moiety selectively forms triazole linkages with azides via a click chemistry reaction known as strain-promoted azide-alkyne cycloaddition (SPAAC), also known as copper-free click chemistry. The amphiphilic dPEG® linker increases conjugates’ hydrodynamic volumes, and it can be used to create space in sterically crowded supramolecular constructs.
| Unit Size | 25 mg, 100 mg, 500 mg |
|---|---|
| Molecular Weight | 1067.12; single compound |
| Chemical formula | C₅₃H₇₀F₄N₂O₁₆ |
| CAS | N/A |
| Purity | > 98% |
| Spacers | dPEG® Spacer is 40 atoms and 46.3 Å |
| Shipping | Ambient |
| Typical solubility properties (for additional information contact Customer Support) | Methylene Chloride, DMSO, DMAC, Methanol, DMF, or Acetonitrile. |
| Storage and handling | -20°C; Always let come to room temperature before opening; be careful to limit exposure to moisture and restore under an inert atmosphere; stock solutions can be prepared with dry solvent and kept for several days (freeze when not in use). dPEG® pegylation compounds are generally hygroscopic and should be treated as such. This will be less noticeable with liquids, but the solids will become tacky and difficult to manipulate, if care is not taken to minimize air exposure. |
Greg T. Hermanson, Bioconjugate Techniques, 2nd Edition, Elsevier Inc., Burlington, MA 01803, April, 2008 (ISBN-13: 978-0-12-370501-3; ISBN-10: 0-12-370501-0). Specifically see pp. 726-729 in his Chapter 18 on discrete PEG compounds for pegylation applications.
Greg T. Hermanson, Bioconjugate Techniques, 3rd Edition, Elsevier, Waltham, MA 02451, 2013, ISBN 978-0-12-382239-0; See chapter 18, Discrete PEG Reagents, pp.787-821, for a full overview of the dPEG® products.
Applicable patents and legal notices are available at legal notices.
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