4-Pentynoyl-Val-Ala-PAB-PNP
4-Pentynoyl-Val-Ala-PAB-PNP is a cleavable ADC linker, that has been used to synthesis cryptophycin conjugates. 4-Pentynoyl-Val-Ala-PAB-PNP is a click chemistry reagent, it contains an Alkyne group and can undergo copper-catalyzed azide-alkyne cycloaddition (CuAAc) with molecules containing Azide groups.