– “SN38-PAB-Lys(MMT)-oxydiacetamide-PEG8-N3 is a drug-linker conjugate for antibody-drug conjugates (ADCs), consisting of the anti-cancer agent SN38 linked to Lys(MMT)-PAB-oxydiacetamide-PEG8-N3. It serves as a click chemistry reagent featuring an azide group that participates in copper-catalyzed azide-alkyne cycloaddition (CuAAC) with alkyne-bearing molecules and can also engage in strain-promoted alkyne-azide cycloaddition (SPAAC) with compounds containing DBCO or BCN groups, facilitating the synthesis of ADCs [1].”