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Medchemexpress LLC m-PEG-NHS ester | 92451-01-9 | MFCD06412227 | 98.0% | 2,000 Da | C9H13NO6 | 500 MG
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Supplier:  Medchemexpress LLC HYW591424500MG

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m-PEG-NHS ester is a methoxy-terminated polyethylene glycol reagent functionalized with an N-hydroxysuccinimide (NHS) ester for selective conjugation to primary amines. With an average molecular weight of approximately 2,000 Da, it is used to introduce PEG chains that improve solubility, stability, and circulation time of proteins, peptides, and small molecules. Supplied as a 500 mg solid.

  • Methoxy-terminated PEG with NHS ester reactive group.
  • Average molecular weight ~2,000 Da for spacer and solubility enhancement.
  • High purity suitable for bioconjugation (reported 98.0%).
  • Reacts selectively with primary amines to form stable amide linkages.
  • Commonly used for PEGylation, linker construction, and bioconjugation.

Catalog No. 50-002-84401


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