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Medchemexpress LLC Propanoic acid, 3-(2-mercaptoethoxy)- | 1260092-48-5 | 95.0% | 150.20 | C5H10O3S | 10 MG
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Supplier:  Medchemexpress LLC HYW19087710MG

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Thiol-PEG1-acid is a short polyethylene glycol (PEG) linker bearing a thiol (-SH) and a terminal carboxyl (-COOH). It is used as a bifunctional coupling reagent in bioconjugation and small-scale synthesis where selective thiol reactivity and carboxyl-mediated coupling are required.

  • Short PEG linker with terminal thiol and carboxyl functional groups.
  • Enables selective coupling via thiol chemistry, such as maleimide conjugation.
  • Carboxyl group suitable for amide or ester bond formation with amines or alcohols.
  • Low molecular weight (approx. 150.2 g/mol) for minimal steric hindrance.
  • Typically supplied at 95.0% purity for research applications.
  • Useful for bioconjugation, linker construction, and small-molecule linker design.

Catalog No. 50-002-81940


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