m-PEG-thiol (MW 2000)

• CAT Number: I040734
• CAS Number: 134874-49-0
• Molecular Formula: (C2H4O)nC3H8OS
• Molecular Weight: 2000(Average)
• Purity: ≥95%

m-PEG-thiol (MW 2000)(CAT: I040734) is a linear methoxy polyethylene glycol derivative terminated with a thiol (-SH) group, with an average molecular weight of 2000 Da. The thiol functionality enables selective and stable conjugation to gold surfaces, maleimide groups, and other thiol-reactive substrates, making it ideal for surface modification, nanoparticle functionalization, and bioconjugation. m-PEG-thiol enhances solubility, reduces immunogenicity, and provides steric stabilization in biological and material science applications. It is commonly used in drug delivery, biosensor development, and PEGylation of proteins or nanoparticles. Supplied as a high-purity reagent.