Boc-NH-PEG4-MS

• CAT Number: I015997
• CAS Number: 1447797-72-9
• Molecular Formula: C14H29NO8S
• Molecular Weight: 371.45
• Purity: ≥95%
• Synonyms: 2-[2-[2-[2-[(2-methylpropan-2-yl)oxycarbonylamino]ethoxy]ethoxy]ethoxy]ethyl methanesulfonate
• InChI: InChI=1S/C14H29NO8S/c1-14(2,3)23-13(16)15-5-6-19-7-8-20-9-10-21-11-12-22-24(4,17)18/h5-12H2,1-4H3,(H,15,16)
• InChIKey: ALCCXXPVRZCVPC-UHFFFAOYSA-N
• SMILES: CC(C)(C)OC(=O)NCCOCCOCCOCCOS(=O)(=O)C

Boc-NH-PEG4-MS（Cat No.:I015997）is a heterobifunctional polyethylene glycol derivative with a Boc-protected amine at one end and a mesylate (MS) leaving group at the other, connected through a four-unit PEG chain. The Boc group provides temporary protection for controlled deprotection and selective amine coupling, while the mesylate enables substitution reactions with nucleophiles. The PEG4 spacer improves solubility, flexibility, and biocompatibility, while reducing steric hindrance. This versatile reagent is widely used in bioconjugation, peptide synthesis, and drug discovery to construct multifunctional molecules and biomaterials.