m-PEG24-NHS ester

• CAT Number: I016347
• CAS Number: 2395839-96-8
• Molecular Formula: C54H103NO28
• Molecular Weight: 1214.39
• Purity: ≥95%
• Synonyms: (2,5-dioxopyrrolidin-1-yl) 3-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-(2-methoxyethoxy)ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]propanoate
• InChI: InChI=1S/C54H103NO28/c1-59-6-7-61-10-11-63-14-15-65-18-19-67-22-23-69-26-27-71-30-31-73-34-35-75-38-39-77-42-43-79-46-47-81-50-51-82-49-48-80-45-44-78-41-40-76-37-36-74-33-32-72-29-28-70-25-24-68-21-20-66-17-16-64-13-12-62-9-8-60-5-4-54(58)83-55-52(56)2-3-53(55)57/h2-51H2,1H3
• InChIKey: VACCUKVGLYJBJU-UHFFFAOYSA-N
• SMILES: COCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCC(=O)ON1C(=O)CCC1=O

m-PEG24-NHS ester(CAT: I016347) is a monofunctional polyethylene glycol (PEG) derivative featuring a methoxy group at one terminus and an N-hydroxysuccinimide (NHS) ester at the other. The PEG24 spacer provides a long, flexible, and highly hydrophilic chain that improves solubility, reduces steric hindrance, and minimizes non-specific interactions. The NHS ester enables efficient and rapid conjugation to primary amines, forming stable amide bonds under mild conditions. With its extended PEG chain, this reagent is particularly useful in bioconjugation, drug delivery, surface passivation, and biomaterials engineering, where long, biocompatible spacers are required to enhance stability, circulation time, and functional performance.