t-boc-N-Amido-dPEG®4-OH

Greg T. Hermanson, Bioconjugate Techniques, 3^rd 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.

Effects of linker variation on the in vitro and in vivo characteristics of an In-labeled RGD peptide, Ingrid Dijkgraaf, Shuang Liu, John A.W. Kruijtzer, Annemieke C. Soede, Wim J.G. Oyen, Rob M.J. Liskamp, Frans H.M. Corstens, Otto C. Boerman. Nuclear Medicine and Biology.  1 (34), 29, (2007). DOI: 10.1016/j.nucmedbio.2006.10.006.