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Medchemexpress LLC M-PEG-thiol | 134874-49-0 | MFCD21363241 | 99.0% | 550 (average) | (C2H4O)nC3H8OS | 250 MG
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Supplier:  Medchemexpress LLC HYW591476C250MG

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m-PEG-thiol (MW 550) is a monofunctional methoxy polyethylene glycol terminated with a free thiol (-SH). It has an average molecular weight of 550 Da and is supplied as a solid for research use in surface functionalization, bioconjugation, and nanoparticle modification.

  • Provides a terminal thiol for selective conjugation to maleimide or gold surfaces.
  • Average molecular weight of 550 Da for controlled PEGylation.
  • High purity suitable for research applications (reported ~98.98%).
  • Available in lab-scale pack sizes for method development and small-batch experiments.
  • Stable when stored sealed and protected from moisture; follow cold storage recommendations for solutions.

Catalog No. 50-002-84505


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