Val-Lys(Boc)-PAB is a novel ADC linker which was used to prepare camptothecin peptide conjugates as antitumor agents (WO 2019195665).

MC-Gly-Gly-Phe is a novel linker commonly used in the synthesis of antibody-drug conjugates (ADC) in which it connects the antibody with the drug-load.

Fmoc-Val-Cit-PAB-PNP is a linker for Antibody-Drug-Conjugation (ADC). The Val-Cit will specifically be cleaved by catepsin B. Because this enzyme is only present in the lysosome, the ADC payload will only be released in the cell. The azido group will react with DBCO, BCN or other alkyne groups through click chemistry. The hydrophilic PEG spacer increases […]

MC-Val-Cit-PAB is a novel cathepsin cleavable ADC linker that is utilized for the synthesis of antibody-drug conjugate (ADC) such as some of the FDA approved ADC drugs including brentuximab vedotin. The mechanism is like this: the Val-Cit will specifically be cleaved by catepsin B as this enzyme is only present in the lysosome, the ADC […]

DBCO-acid is a non-activated and cleavable building block and ADC linker that can add minimal spacer to modified molecules such as in the synthesis of ADC linker DBCO-NHS ester. Reference: Production of site-specific antibody-drug conjugates using optimized non-natural amino acids in a cell-free expression system. Bioconjug Chem. 2014 Feb 19;25(2):351-61.

SMCC, formerly known as succinimidyl-4-[N-maleimidomethyl]cyclohexane-1-carboxylate, is a heterobifunctional protein crosslinker. SMCC is an amine-to-sulfhydryl crosslinker that contains NHS-ester and maleimide reactive groups at opposite ends of a medium-length cyclohexane-stabilized spacer arm (8.3 angstroms). SMCC conjugation occurs via a maleimide group that is sulfhydryl (thiol; -SH) reactive and a NHS ester group that is amine reactive […]