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Medchemexpress LLC 4,7,10,13,16-pentaoxanonadec-18-ynoic acid | 1245823-51-1 | MFCD22201536 | ≥98.0% | 304.34 g/mol | C14H24O7 | 1 G
Supplier: Medchemexpress LLC HY1011571G
Propargyl-PEG5-acid is a PEG-based linker bearing a terminal propargyl (alkyne) group and a free carboxylic acid. It is used as a click-chemistry reagent and as a non-cleavable five-unit PEG spacer for bioconjugation workflows such as PEGylation and antibody-drug conjugate linker synthesis. The material is supplied as a colorless to light-yellow liquid with ≥98.0% purity and is intended for research use; store protected from light at -20°C, or in solution at -80°C for longer-term storage.
- Contains terminal propargyl alkyne for copper-catalyzed azide-alkyne cycloaddition.
- Five-unit PEG spacer improves solubility and reduces aggregation.
- Free carboxylic acid enables conjugation through standard activation chemistries.
- High purity (≥98.0%) for reproducible research results.
- Colorless to light-yellow liquid; stable when stored protected from light at -20°C.
- Intended for research use only; not validated for clinical applications.
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