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DBCO-dPEG®₄-TFP ester (QBD-11362)

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Description

DBCO-dPEG®4-TFP ester, product number QBD-11362, is a heterobifunctional, bioorthogonal crosslinker designed to join azides and amines across a short (16 atoms, 17.9 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.

Specifications

Unit Size25 mg, 100 mg, 500 mg
Molecular Weight714.70; single compound
Chemical formulaC₃₇H₃₈F₄N₂O₈
CASN/A
Purity> 98%
SpacersdPEG® Spacer is 16 atoms and 17.9 Å
ShippingAmbient
Typical solubility properties (for additional information contact Customer Support)Methylene Chloride, DMSO, DMAC, Methanol, 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.



References

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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