Alkyne-PEG3-NHS ester

Cat. # Quantity Price Lead time
2298-1g 1 g $490.00 in stock
2298-5g 5 g $980.00 10 days
2298-25g 25 g please inquire 21 days

Alkyne-PEG3-NHS ester is a bifunctional molecule containing NHS ester and alkyne functional groups. NHS ester group is used for the labeling of amine groups, like lysine and N-terminal NH2, in proteins and peptides. And terminal alkyne group is useful for copper catalyzed Click chemistry (CuAAc) or Sonogashira coupling.

PEG3 linker is hydrophilic, and provides a good separation between the parts of the conjugate.

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Alkyne PEG3 amine is a medium length heterobifunctional linker for the conjugation.

Hexynoic acid STP ester

Alkyne activated ester for the modification of amine groups. STP ester group is an excellent alternative to NHS ester functionality.

General properties

Appearance: colorless to yellowish oil
Molecular weight: 357.36
CAS number: 1428629-70-2
Molecular formula: C16H23NO8
IUPAC name: 2,5-Dioxo-1-pyrrolidinyl 3-(2-{2-[2-(2-propynyloxy)ethoxy]ethoxy}ethoxy)propionate
Solubility: good in water, many polar organic solvents
Quality control: NMR 1H, HPLC-MS (95%)
Storage conditions: Storage: 12 months after receival at -20°C in the dark. Transportation: at room temperature for up to 3 weeks. Avoid prolonged exposure to light. Desiccate.
MSDS: Download
Product specifications
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