m-PEG-thiol (MW 5000)

• CAT Number: I045916
• Molecular Weight: 5000(Average)
• Purity: ≥95%

m-PEG-Thiol (MW 5000)（Cat No.:I045916）is a linear, methoxy-terminated polyethylene glycol derivative featuring a reactive thiol group at one end. The thiol functionality enables selective conjugation to maleimide, gold, or other thiol-reactive surfaces, making it highly suitable for surface modification, nanoparticle stabilization, and bioconjugation. The PEG5000 backbone imparts excellent water solubility, flexibility, and biocompatibility while reducing protein adsorption and nonspecific interactions. This reagent is widely used in nanomedicine, drug delivery, biosensing, and material science applications where long-chain PEG provides steric stabilization and prolonged circulation in biological environments.