Fmoc-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 Fmoc group can be deprotected under basic condition to obtain the free amine which can be used for further conjugations. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.