tco-peg4-amine

TCO-PEG4-amine is a PEG-based linker for PROTACs that joins two essential ligands, facilitating the selective protein degradation by leveraging the ubiquitin-proteasome system within cells. [PROTACs]

Tetrazine-PEG4-amine (hydrochloride) serves as a cleavable 4-unit PEG ADC linker and a click chemistry reagent in the synthesis of antibody-drug conjugates (ADCs) [1]. It features a Tetrazine group capable of undergoing an inverse electron demand Diels-Alder reaction (iEDDA) with molecules that contain TCO groups.

TCO-PEG4-TFP ester is an amine-reactive labeling reagent used for the modification of proteins, antibodies, and other amine-containing biopolymers. TFP is a reactive ester that demonstrates superior stability during hydrolysis in aqueous media, enhancing the efficiency and reproducibility of biopolymer labeling. The TFP ester of carboxylic acid reacts with primary amines at a rate equivalent to NHS esters, forming a covalent amide bond identical to that produced by the reaction of primary amines with NHS or sulfo-NHS esters.