Boc-Val-Ala-PAB is a cleavable ADC linker. The Val-Ala is effectively cleaved by lysosomal proteolytic enzymes while being highly stable in human plasma, making this a potentent stragy in ADC linker design. The t-butyl protected carboxyl group can be deprotected under acidic conditions. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.