dbco-peg-4-nhs ester

DBCO-PEG4-NHS ester is a PEG-based PROTAC linker utilized in PROTAC synthesis[1].

PC DBCO-PEG4-NHS ester, a PEG-based linker for PROTACs, connects two essential ligands to form PROTAC molecules, enabling selective protein degradation via the ubiquitin-proteasome system within cells.

DBCO-NHCO-PEG4-NHS ester is a DBCO-containing PEGylated active ester linker that combines NHS ester reactivity toward primary amines with strain-promoted azide-alkyne cycloaddition capability. It enables efficient bioconjugation through amide coupling and copper-free click reaction with azide groups. The PEG4 spacer provides hydrophilicity and tunable linker length, making it widely used in PROTAC and antibody-drug conjugate (ADC) construction.