Vector Laboratories is closed for the President’s Day on Monday, February 19th. We will be back in the office on Tuesday, February 20th.
We will respond to emails upon our return. Have a wonderful day.

MAL-dPEG®₃-Lipoamide (QBD-10817)



MAL-dPEG®3-Lipoamide, product number 10817, is a heterobifunctional crosslinker functionalized with a maleimidopropyl group and a lipoic acid moiety on opposite ends of a short (27 atoms, 31.1 Å), single molecular weight, discrete PEG (dPEG®) crosslinker. The lipoic acid moiety forms dative bonds with gold, silver, and other metals and can be used to coat or passivate metal surfaces. The maleimide group forms stable thioether bonds with free thiols and can be used to immobilize a sulfhydryl-containing biomolecule such as a peptide or antibody fragment to a metal surface through the dPEG®-lipoamide linkage. The flexible, non-immunogenic, hydrophilic dPEG® linker adds water solubility and increases the conjugate’s hydrodynamic volume.


Unit Size100mg, 1000mg
Molecular Weight559.74; single compound
Chemical formulaC₂₅H₄₁N₃O₇S₂
Purity> 98%
SpacersdPEG® Spacer is 27 atoms and 31.1 Å
Typical solubility properties (for additional information contact Customer Support)Methylene chloride, DMA or DMSO. Limited solubility in 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), pp. 188-190, 458-497, 924-935.

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.

Focal adhesion regulation through microcontact printing of protein nanoparticles on self-assembled monolayers for cell guidance. Albert Martinez Moreno. DUGiDocs. 2016, June 1, 2016. DOI:

Applicable patents and legal notices are available at legal notices.

How do I Request a Quote?

To request a quote for products:

  1.  Log in to
  2.  Add the items you wish to quote to the cart;
  3.  View your cart;
  4.  Click on the “Request a Quote” button found below the items in your cart;
  5.  Download your quote