Hydroxy-PEG4-(CH2)2-Boc is a uncleavable ADC linker used in the synthesis of antibody-drug conjugates (ADCs). Hydroxy-PEG4-(CH2)2-Boc is extracted from patent WO2004008101A2 (compound 191).
[1]. Qingqi Chen,et al. The use of isocyanate linkers to make hydrolyzable active agent biopolymer conjugates. Patent WO2004008101A2.
















