NH-bis(C2-PEG2-NH-Boc)

• CAT Number: I014517
• CAS Number: 2182601-69-8
• Molecular Formula: C22H45N3O8
• Molecular Weight: 479.61
• Purity: ≥95%
• Synonyms: tert-butyl N-[2-[2-[2-[2-[2-[2-[(2-methylpropan-2-yl)oxycarbonylamino]ethoxy]ethoxy]ethylamino]ethoxy]ethoxy]ethyl]carbamate
• InChI: InChI=1S/C22H45N3O8/c1-21(2,3)32-19(26)24-9-13-30-17-15-28-11-7-23-8-12-29-16-18-31-14-10-25-20(27)33-22(4,5)6/h23H,7-18H2,1-6H3,(H,24,26)(H,25,27)
• InChIKey: SYIWCLJWOXGQHM-UHFFFAOYSA-N
• SMILES: CC(C)(C)OC(=O)NCCOCCOCCNCCOCCOCCNC(=O)OC(C)(C)C

NH-bis(C2-PEG2-NH-Boc)(CAT: I014517) is a branched, Boc-protected polyethylene glycol (PEG) derivative designed as a versatile intermediate for bioconjugation and advanced material synthesis. It features a central amine core substituted with two C2-PEG2 arms, each terminated in a Boc-protected amine group. The Boc functionalities provide stability during synthetic steps and can be selectively removed under acidic conditions to generate free primary amines for further coupling. The short PEG2 spacers impart hydrophilicity, flexibility, and solubility while reducing steric hindrance. This reagent is particularly useful in multivalent ligand design, drug delivery, polymer modification, and biomaterials research where branched, amine-reactive PEG linkers are required.