1-Amino-11-azido-3,6,9-trioxaundecane

PEG linker for bioconjugation

L-Tyrosine, L-cysteinyl-L-cysteinyl-L-alpha-glutamyl-L-tyrosyl-L-cysteinyl-L-cysteinyl-L-alpha-aspartyl-L-prolyl-L-alanyl-L-cysteinyl-L-threonylglycyl-L-cysteinyl-, cyclic (1-->6),(2-->10),(5-->13)-tris(disulfide)