(S)-10-Benzyl-23-(2,5-dioxo-2,5-dihydro-1H-pyrrol-1-yl)-6,9,12,15,18-pentaoxo-3-oxa-5,8,11,14,17-pentaazatricosan-1-oic acid

This compound is a research reagent used as a linker in antibody-drug conjugate (ADC) construction. It features a maleimide group for site-specific conjugation and a cathepsin-cleavable valine-citrulline-like spacer, with high polarity and multiple amide bonds.