Vector Labs is closed to observe Independence Day (US Holiday) on Thursday, July 4th.
We will be back in the office on Friday. We will respond to emails upon our return. Have a wonderful day.

Amino-dPEG®₂₄-OH (QBD-10868)



Amino-dPEG®24-OH, product number QBD-10868, also known as Amino-dPEG®24-alcohol, is a long (71 atoms, 86.0 Å), monodispersed PEGylation reagent designed to modify surfaces and biomolecules. One end of the molecule terminates with a primary amine, while the other end terminates with a primary alcohol group. This extremely hydrophilic PEGylation reagent reacts with carboxylate groups via the primary amine, leaving the hydroxy terminus free for functionalization and further reactions or as a hydrophilicity or charge modifier for the conjugate molecule.

The most common uses for Amino-dPEG®24-OH include modifying biomolecules and passivating surfaces with a highly hydrophilic coating. The primary amine on one end of the dPEG® linker reacts with carboxylates to form stable amide bonds and with aldehydes and ketones to form labile Schiff bases that can be reduced to secondary amines under mild conditions for greater stability. Conjugations with this molecule most commonly use the amine-carboxylate reaction with a carbodiimide such as EDC. Alternatively, activation of carboxylate as the NHS or TFP ester followed by reaction under slightly basic conditions also permits conjugation of the carboxylate and amino moieties.


Unit Size100mg, 1000mg
Molecular Weight1074.29; single compound
Chemical formulaC₄₈H₉₉NO₂₄
Purity> 97%
SpacersdPEG® Spacer is 71 atoms and 86.0 Å
Typical solubility properties (for additional information contact Customer Support)Methylene chloride or water.
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, 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.

Real-Time Video Imaging of Protease Expression In Vivo. Lei Zhu, Jin Xie, Magdalena Swierczewska, Fan Zhang, Qimeng Quan, Ying Ma, Xuexun Fang, Kwangmeyung Kim, Seulki Lee, Xiaoyuan Chen.Theranostics. 2011, (1) pp. 18-27. January 12, 2011.

Applicable patents and legal notices are available at legal notices.

How do I Request a Quote?

To request a quote for products:

  1.  Sign 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