DM4-SMCC, a non-cleavable drug-linker conjugate for antibody-drug conjugates (ADC), leverages the antitumor efficacy of DM4 (an antitubulin agent) through attachment with the SMCC linker, exhibiting antitumor activity[1].
DM4-SPDP, a drug-linker conjugate, integrates the antitubulin agent DM4 with the linker SMCC, facilitating the creation of antibody drug conjugates[1]. Additionally, SPDP serves as a short-chain crosslinker enabling amine-to-sulfhydryl conjugation, leveraging NHS-ester and pyridyldithiol groups to establish cleavable (reducible) disulfide bonds with cysteine sulfhydryls[2][3].