mal-amido-peg-5-c2-​nhs ester

Mal-amido-PEG10-C2-NHS ester is a noncleavable ADC linker, comprising a maleimide group and an NHS ester, which serves as a labeling agent for primary amines (-NH2) found in proteins, amine-modified oligonucleotides, and other amine-containing molecules[1][2].