malamidopeg2nhs ester

Mal-amido-PEG2-NHS ester is a noncleavable linker for antibody-drug conjugates (ADCs) that consists of a maleimide group and an NHS ester. The NHS ester allows for the labeling of protein primary amines (-NH2), amine-modified oligonucleotides, and other amine-containing molecules[1][2].